DEL MAR SULFURELITE Hydrogen Sulfide Analyzer

Transcription

1 DEL MAR SULFURELITE Hydrogen Sulfide Analyzer User s Operating Manual Serial Number XXXX 1 of 77

2 Table of Contents Section X Warranty... Error! Bookmark not defined. GENERAL INFORMATION... 7 OPERATING PRINCIPLES A CHEMFILM TM Technology B SULFURELITE TM Principle INSTALLATION C Location D Input Power Requirements E Gas Sample Line Requirements F Exhaust Provision G Humidifier H Alarm Connections I Remote Recorder Connections J CHEMFILM TM Installation MODULE FUNCTIONS K Power Supply L Touch Screen and Display M CPU N Sensor Unit O Frequently Selected Options for SULFURELITE TM STARTUP AND OPERATING PROCEDURE P Startup Q Shut Down R Touch Screen and Display Operation Normal Analyzer Display: Configuration and Parameter Data Entry: S Parameter Selection T Alarm Configuration Low Concentration Alarm: of 77

3 High Concentration Alarm: Diagnostic Alarm: U Calibration Configurations Gas Calibration (Manual): Gas Calibration (Manual) Running: Gas Calibration (Manual) Complete: Gas Calibration (Auto): Gas Calibration (Auto) Configuration: AutoCal Start Time and Date: AutoCal Dwell Times: AutoCal Intervals: AutoCal Set-up: Gas Calibration (Auto) Running: AutoCal Purge Screen: LED/Detector Calibration: mA Calibration Screen: V System Configurations Tape Advance Set-Up: Data Logger Set-Up: Installing and Removing the SD Card Data Logger Data Format Modbus Address: Unit of Measure: mA Loop Scale: W System Information Display Configuration: Instantaneous Response: Number of Averages: Coefficient 1: Factory Reset: X Clock Configuration System Clock: TROUBLESHOOTING Y Typical Problems Encountered Diagnostic Alarm Erratic Readings on the Display Inoperable Alarm Relay(s) Inoperable 4-20 ma Analog Output Unrolled ChemFilm in Bottom of Sensor Cabinet Larger Than Normal Tape Advance Z Component Checkout Procedures Power Supply Optical Sensor of 77

4 3. Motor Drive Illumination Source CPU Display Assembly Relay(s) Section VII MAINTENANCE A Scheduled Maintenance B Non-Scheduled Maintenance Section VIII REVISION TABLE Section IX DRAWINGS Section X Warranty of 77

5 CAUTION: DO NOT adjust, except as part of a complete calibration sequence, the following: a. Sample flow b. Sample pressure Leave sample slipstream open at all times. 5 of 77

6 Section I General Information 6 of 77

7 GENERAL INFORMATION Rev. 1.0 Del Mar Scientific s SULFURELITE TM precision series of analyzers provide on-line analytical measurement of hydrogen sulfide (H2S) concentrations. Depending on the selected accessories, the measurement concentration range varies from parts per billion up to percent levels. The CHEMFILM TM technology provides specific, interference free, detection and measurement. H2S detection and concentration analysis by the use of CHEMFILM TM are based on chemical factors and physical constants, which confirm the unique analytical precision of the technology. SULFURELITE TM takes full advantage of microprocessor calculation precision. Data is acquired with greater than 16-bit conversion resolution. Signal over sampling is applied for statistical detection processing and accuracy correlation. An extensive set of mathematical algorithms is executed with full floating point precision to calculate the concentration. Local touch screen display provides easy operation selection and real-time analysis display. Configuration selection is provided to meet varied user requirements. * Engineering Units Displayed * Diagnostic Alarm Settings * Concentration Alarm Settings Calibration options allow flexibility to match available resources with application requirements. Diagnostic alarms are generated by software checks to provide system status and help with system maintenance. On-line reliability is built into Del Mar Scientific products at every level, from initial design to final calibration and quality assurance testing. Operator confidence is gained through exceptional on-line performance. Careful design, strict manufacturing control and microprocessor technology, combined with the proven detection principle, make these monitors the most accurate, versatile and reliable monitors available for field installation. All calibration constants and alarm set points are stored in random Flash memory on the processor. Battery backup prevents loss of memory in the event of a power failure. The system is also equipped with a real time clock and calendar. The system clock is required for auto calibration, which allows the system to calibrate at user-selected time intervals. The system also provides the means for calibrating a 4-20 ma loop, using an external-measuring device, such as a current meter. The operator simply adjusts the displayed 4-20 ma current to match the external measuring device. 7 of 77

8 CAUTION: The specific start-up and shut-down sequence must be followed! Rev of 77

9 Section II Operating Principles 9 of 77

10 OPERATING PRINCIPLES Rev. 1.0 A CHEMFILM TM Technology Measurement of H2S concentration by the use of CHEMFILM TM is based on physical constants and chemical factors. Mathematical formulations and field proven results demonstrate the calculation precision that is achieved by the application of CHEMFILM TM technology. Detection of H2S concentrations by the use of CHEMFILM TM is achieved by exposing the film to a sample through an aperture in the sample flow system. The reaction of photographic film to light is an analogy to the way that the chemically activated CHEMFILM TM reacts to hydrogen sulfide. This reaction has two characteristics that allow it to be applied with unique analytical precision: 1. The reactants are colorless (white). 2. The product (lead sulfide) is colored. 3. In more than a century of use, H2S is the only reactant ever found that produces a colored product. B SULFURELITE TM Principle The block diagram on the following page shows how Del Mar Scientific s SULFURELITE TM monitor utilizes a single optical sensor and light source to detect and measure the rate of lead sulfide formation. The single optical sensor used in the SULFURELITE TM series functions as both a reference and measurement optical sensor. At the beginning of each measurement cycle, the tape advances to a new or unexposed portion of the tape. Instantly, as the tape stops, the optical sensor value is measured and the resultant voltage level is stored in the microprocessor memory section. A new optical sensor reading is compared to the stored information. At this point, the microprocessor determines the level of H2S concentration by comparing the two readings and displays the result on the digital display in engineering units as selected by end user in the system configuration, such as, PPM or Grains by volume. Simultaneously, the second reading is stored in the memory for later comparison to a third reading. The cycle is repeated on an average of one reading every second, until the tape is too dark for further accurate readings or until a tape advance occurs. Effectively, a new zero or reference point is selected with each reading after the initial period. Temperature drift is virtually eliminated, as it is confined to a time span of less than 10 seconds. 10 of 77

11 As the reading is displayed, it is used to actuate any alarms, if the level is above the alarm set point, and drive the optional 4-20 ma loop or data logger. Figure of 77

12 Section III Installation 12 of 77

13 INSTALLATION Rev. 1.0 Upon receipt, the instrument should be inspected for any damage that may have been sustained in shipping. If the instrument has been damaged, it should be reported to Del Mar Scientific at once. C Location The SULFURELITE TM analyzers are designed for use in the following area classifications: Non-hazardous Class 1, Division 2 D Input Power Requirements The input power requirements for your particular analyzer vary depending on the input power option ordered with the instrument. The following tables represent the input power required at the possible voltage inputs. For best analyzer performance, Del Mar Scientific recommends that analyzers NOT share a common DC power source with other devices. Input Voltage Input Current Notes VAC 0.17 Amps AC.5 Amps with VAC Amps AC Cabinet heater 12 VDC 1.0 Amp Max allowable 24 VDC 0.5 Amp ripple is 200 mvp-p Table 1 A ground rod must also be installed at each analyzer location. This ground should NOT be shared with other instruments. The chassis, cabinet and/or back plate should be grounded to the grounding rod. E Gas Sample Line Requirements The input sample line should be made of stainless steel and not be more than 1/4" in diameter. It is recommended that a slipstream be used to insure that a lengthy dead-end sample line does not adversely affect response time. A compression type 1/4" O.D. tube fitting is provided for the gas sample input to the 13 of 77

14 analyzer. Rev. 1.0 Input Sample Pressure To Factory Supplied Regulator Sample Pressure From Factory Supplied Regulator Input Sample Pressure (If No Factory Regulator Is Supplied) Sample Flow Meter psig 15 psig 15 psig 50 Elevation F Exhaust Provision Sample gas is expelled through a compression type 1/4" tube fitting to atmosphere. Always position the exhaust line in a downward configuration to prevent backpressure. Use of a wind baffle (Part Number ) at the end of the exhaust line is recommended. Any exhaust line must not be smaller than 1/4" O.D. and.032" wall thickness. NOTE: In making the exhaust connection, care must be taken to avoid creating either a backpressure or a vacuum at the sensor head. The exhaust cannot be connected to a relief or vacuum line. G Humidifier The humidifier is located behind the hinged front panel and is accessible by opening the panel. Remove the knurled fill plug and fill to within 1/4" of the fill line with the humidifier solution (Part Number ), supplied with the instrument. Do not over fill the humidifier, as it will not function properly when over filled. The capacity of the humidifier is sufficient for approximately four weeks of operation under most conditions. After filling, replace and hand tighten the knurled fill plug. NOTE: The humidifier fill line is the etched mark on the side of the humidifier. The filter (Part Number ) in the humidifier can be replaced by disconnecting the sample input line located in the center of the humidifier. Remove the large, stainless steel nut to which the filter is attached. The filter slips off the filter stem for easy replacement. Carefully slip the replacement filter over the O-ring seal. Do not use any other filter, as the wicking action of the filter is an important function of the humidifier. When replacing the sample input line, be sure it is tightened sufficiently to insure that leaks do not occur. H Alarm Connections Alarm connections on all SULFURELITE TM series instruments are made on Alarm Relay(s) internal to the analyzer. Refer to the Installation and Wire drawing in Section IX - 14 of 77

15 Drawings for location of these connections. Care should be taken to avoid exceeding the maximum rating of these outputs, as damage to the control circuitry may occur. Follow approved wiring methods when making the connections. All inductive loads connected to mechanical relay outputs must have a suppression diode installed across the load (at the load) to prevent back- EMF from damaging the analyzer. I Remote Recorder Connections Recorder connections on all SULFURELITE TM series instruments are made on the Isolator internal to the analyzer. Refer to the Installation and Wire drawing in Section IX - Drawings for location of these connections. Care should be taken to avoid exceeding the maximum rating of these outputs, as damage to the control circuitry may occur. Follow approved wiring methods when making the connections. Please note that the 2-wire, 4-20 ma signal, provided for external connection to a chart recorder or other instrumentation, is self-powered. J CHEMFILM TM Installation Refer to the Assy, SulfurElite Front Panel ( ) drawing in Section IX - Drawings for identification of these components. 1. Press the Hold button on the top left corner of the display screen. The button will indicate when the unit is in Hold. 2. Place a full roll of CHEMFILM TM on the supply hub. Leave approximately 10 inches of CHEMFILM TM loose. 3. Pull down on the spring-loaded pressure block. If you wish, you may place the Tape Loading Tool (Part Number ) over the guide bolts at the bottom of the pressure block to hold the detector open. Feed the loose end of the CHEMFILM TM above the guide post then through the ½" slot in the detector and pressure blocks until several inches of CHEMFILM TM extend through the detector. Release the pressure block and pull about one inch of tape through the detector head to verify that the tape is in the proper position between the pressure block and detector block. 4. Place an empty cardboard spool on the take-up reel so that the notch on the spool is engaged by the cap screw on the hub. Depress the pressure roller and pass the CHEMFILM TM between the pressure roller and the capstan. Pull several inches of tape through and then release the pressure roller. Secure the CHEMFILM TM to the cardboard spool with a piece of tape. Slowly rotate the take-up spool counterclockwise to remove as much slack as the take-up drive will permit. The slip clutch action of the take-up drive will take up the 15 of 77

16 balance of the slack when the analyzer is placed in operation. Rev Press the Reset button on the display screen. The analyzer will perform a tape advance. Verify the CHEMFILM TM advances through the detector properly. 6. Press the Hold button. This will place the analyzer back into normal service. The Reset will NOT remove the Hold action. Three mode settings control the behavior and use of your CHEMFILM TM tape in the analyzer. These are: Tape Advance Interval Time Tape Advance Duration Advance on Demand Refer to these modes to understand how the analyzer consumes CHEMFILM TM. NOTE: Your CHEMFILM TM is sensitive to moisture and environmental conditions. It must be replaced after being open for 45 days. Del Mar Scientific can NOT guarantee proper operation of your analyzer if the CHEMFILM TM tape has been out of its package for more than 45 days. 16 of 77

17 Section IV Module Functions 17 of 77

18 MODULE FUNCTIONS Rev. 1.0 The SULFURELITE TM H2S analyzers have several optional modes of control and configuration. These features are described in this section to familiarize operations personnel with the functions of the system, and available options that may be added later. K Power Supply The power supply accepts the input power and converts it to 24 VDC for the control circuitry. Depending on the analyzer options, input power may be one of the following: VDC VAC Insure that the correct input power and polarity is applied, or damage may occur. L Touch Screen and Display The display module with touch screen is the primary operator interface. The display shows the current concentration during normal operation or mode status during configuration. All operator selectable parameters are made via the touch screen by selecting the appropriate mode. A listing and description of modes and instructions for changing parameters can be found in Section V Part C. M CPU The CPU performs analyzer calculations, displays H2S concentration, and outputs various signals. N Sensor Unit The sensor unit consists of the optical sensor, illumination source and the motor. O Frequently Selected Options for SULFURELITE TM Data Logger A SD Card based data logger is available to record concentration, date, time, and alarm status. The data is an easily readable CSV format and can be read from any standard PC or 18 of 77

19 laptop with an appropriate adaptor and software ma Isolated Output Provides 4-20mA isolated outputs. Rev. 1.0 Alarm Relay(s) Diagnostic Alarm This option provides a mechanical relay contact output, in the event of one of the following fault conditions: Tape breakage Out of tape Motor failure Optical sensor failure Illumination source failure Auto Calibration failure(if Installed) Processor failure Low Concentration Alarm This option provides mechanical relay contact outputs in the event that the concentration equals or exceeds the selected value. High Concentration Alarm This option provides mechanical relay contact outputs in the event that the concentration equals or exceeds the selected value. Cabinet Heater A 115/220 VAC, 50-watt heater, with thermostat control integrated into the cabinet that maintains operating temperature and provides freeze protection of the humidifier solution. Pressure Regulator A PSIG input with a 0-25 PSIG output and pressure gauge used to control sample pressure to the analyzer. Materials of construction have been selected for H2S service. Sample Filter(s) Calibration Tap This option provides protection for the analyzer from moisture and particulate contamination. A low dead end volume provides a minimal sample transport delay. Materials of construction have been selected for H2S service. This option provides customer connection fittings and valves to provide input of calibration gas without disconnection of sample 19 of 77

20 line. Rev. 1.0 Auto Calibration Modbus This option provides the software, contact outputs, solenoid valves, tubing and customer connections for automatically calibrating the analyzer at user selected time intervals. This option offers the ability to communicate with the analyzer using the popular Modbus ASCII protocol. The analyzer uses RS-485 serial communication for the Modbus interface. Additional options may be available. Consult the factory for details and pricing information. 20 of 77

21 Section V Start-Up and Operating Procedure 21 of 77

22 STARTUP AND OPERATING PROCEDURE Rev. 1.0 The initial start-up of any SULFURELITE TM instrument is very simple, but the few steps involved must be followed for proper operation. If, during the start-up procedure (or at any other time), the instrument does not function properly, refer to Section VI - Troubleshooting for help in correcting the problem. P Startup 1. Turn on main power to the unit. 2. Install the CHEMFILM TM sensing tape as described in Section III, Part H. 3. Fill the humidifier assembly with solution as described in Section III, Part E. 4. Verify pressure and flow settings as stated in Section III, Part C. Q Shut Down 1. Turn off main power to unit. 2. Turn off gas flow to the analyzer. 22 of 77

23 R Touch Screen and Display Operation Rev. 1.0 Information display and data entry is performed through the touch screen. Normal Analyzer Display: During normal analyzer operation the display shows the current time, date and concentration data, as new values become available. The display also shows the buttons for system configuration. The screen will also show if the analyzer is in hold mode by showing ON on the Hold button. The screen will also show if the analyzer is in an alarm state by changing the color of the concentration value. Green indicates the concentration is below all alarm set points. Yellow indicates the concentration is above the low alarm set point. Red indicates the concentration is above the high alarm set point Hold: Pressing the Hold button freezes all outputs. System: Pressing the System button brings up the Analyzers Information. See section H. System Information. Alarm: Cal: Set-Up: Pressing the Alarm button brings up the alarm configuration information. See section E. Alarm Configuration. Pressing the Cal button brings up the calibration configuration information. See section F. Calibration Configuration. Pressing the Set-Up button brings up the system configuration information. See section G. System Configuration. 23 of 77

24 Time: Reset: Pressing the Time or Date at the top of the screen will bring up the clock information. See section I. Clock Configuration. Pressing the Reset button performs a system reset and executes a tape advance. Reset processing includes: Initializing data queues Tape advance Initialize the tape timers Check for broken tape condition Check for out of tape condition Update 4-20 ma output Reset alarms as needed Configuration and Parameter Data Entry: To change the operation and settings of the analyzer, press the appropriate button on the touch screen. These parameters generally include alarms, settings, configurations, etc. S Parameter Selection To change user selectable parameters, the operator must first initiate the mode selection function. NOTE: When performing mode operations, the alarms are disabled, and the 4-20 ma loop current is held at its last level in all modes except during an Auto Cal sequence or 4-20 ma calibration. To enter the mode selection functions press the appropriate button. For example, to edit the alarm settings press the Alarm button. 24 of 77

25 T Alarm Configuration From the main screen press the Alarm button. This will bring up the Alarm Configuration screen. The screen shows the Low Concentration, High Concentration and Diagnostic Alarm. To edit one of the concentration alarms press the Low or High button on the left. The text on the selected button will turn Red to indicate the selected alarm. The current concentration will be displayed in the top left corner. To return to the previous screen press the Back button. 25 of 77

26 Low Concentration Alarm: Rev. 1.0 Description: This parameter is used to set the H2S concentration level at which the Low Concentration Alarm is to be activated. The Low Concentration Alarm will return to normal when the concentration reaches 98% of the entered alarm value unless the Low Alarm Latching feature is enabled. Fail-Safe: Latching: Default: Range: The Low Alarm Fail-Safe determines the logic of the digital output when the alarm is active, either low active or high active. When the analyzer is equipped with mechanical relays, and when Low Alarm Fail-Safe is set, the alarm will behave in a fail-safe manner. This means that a power failure will cause an alarm-active state. The Low Alarm Latching is used to cause the Low Concentration Alarm to latch when activated. This is a software latch only. A System Reset or a power cycle sequence causes the alarm to unlatch and reset provided that the current analyzer concentration is lower than the Low Concentration Alarm value PPM is the factory default value. Minimum value: 0.0 PPM Maximum value: Analyzer Range To enter a new concentration value: 1. Press the Low button on the left side of the screen. 2. Enter in the new concentration value for the alarm (ex. 3.50). The new value will be displayed above the keypad To clear an incorrect value, press the CLR button then re-enter the value. 3. Press the Ent button to accept the value. 4. The entered value will be displayed at Low Alarm = 3.50 To change the Fail-Safe or the Latching status, press the corresponding button. The text on the button will toggle between Black and Red as well as the button indicator will fill. The Red text indicates that function is active. To return to the previous screen press the BCK button. 26 of 77

27 High Concentration Alarm: Rev. 1.0 Description: This parameter is used to set the H2S concentration level at which the High Concentration Alarm is to be activated. The High Concentration Alarm will return to normal when the concentration reaches 98% of the entered alarm value unless the High Alarm Latching feature is enabled. Fail-Safe: Latching: Default: Range: The High Alarm Fail-Safe determines the logic of the digital output when the alarm is active, either low active or high active. When the analyzer is equipped with mechanical relays, and when the High Alarm Fail-Safe is set, the alarm will behave in a fail-safe manner. This means that a power failure will cause an alarm-active state. The High Alarm Latching is used to cause the High Concentration Alarm to latch when activated. This is a software latch only. A System Reset or a power cycle sequence causes the alarm to unlatch and reset provided that the current analyzer concentration is lower than the High Concentration Alarm value PPM is the factory default value. Minimum value: 0.0 PPM Maximum value: Analyzer Range To enter a new concentration value: 1. Press the High button on the left side of the screen. 2. Enter in the new concentration value for the alarm (ex. 4.50). The new value will be displayed above the keypad To clear an incorrect value, press the CLR button then re-enter the value. 3. Press the Ent button to accept the value. 4. The entered value will be displayed at High Alarm = 4.50 To change the Fail-Safe or the Latching status, press the corresponding button. The text on the button will toggle between Black and Red as well as the button indicator will fill. The Red text indicates that function is active. To return to the previous screen press the BCK button. 27 of 77

28 Diagnostic Alarm: Rev. 1.0 Fail-Safe: Latching: The High Alarm Fail-Safe determines the logic of the digital output when the alarm is active, either low active or high active. When the analyzer is equipped with mechanical relays, and when the High Alarm Fail-Safe is set, the alarm will behave in a fail-safe manner. This means that a power failure will cause an alarm-active state. The Diagnostic Alarm Latching is used to cause the Diagnostic Alarm to latch when activated. This is a software latch only. A System Reset or a power cycle sequence causes the alarm to unlatch and reset provided that the diagnostic fault has been cleared. When this parameter is set, a diagnostic condition will trigger a digital output state change and will remain in an alarm state until the operator intervenes. This is a software latch only. A System Reset or power cycle sequence causes the alarm to unlatch and reset provided that the diagnostic condition has been cleared. If the unit is in a Diagnostic alarm the condition will be listed on the main screen: Broken Tape or Out of Tape or Auto Cal Failed To change the Fail-Safe or the Latching status, press the corresponding button. The text on the button will toggle between Black and Red as well as the button indicator will fill. The Red text indicates that function is active. To return to the previous screen press the BCK button. 28 of 77

29 U Calibration Configurations From the main screen press the Cal button. This will bring up the Calibration Configuration screen. Rev. 1.0 Gas Calibration (Manual): The current concentration will be displayed in the top left corner. Description: Start: Cal Gas Value allows the operator to input the concentration of the calibration gas used during Manual Calibration. Any variation of the analyzer measured value and the calibration gas standard is reconciled by adjusting the Calibration Factor. The Start button will start a timer (20 minutes) to allow the analyzer sufficient time to stabilize on the calibration gas being applied to the analyzer. Reset: The Reset button returns the H2S Factor back to the factory default of To enter a new concentration value: 1. Enter in the new value for the calibration gas standard (ex. 5.50). The new value will be displayed above the keypad To clear an incorrect value, press the CLR button then re-enter the value. 2. Press the Ent button to accept the value. 3. The entered value will be displayed at Standard = 5.50 Before starting Manual calibration connect the calibration standard to the Cal Port. Start gas 29 of 77

30 flow then press the Start button to start the calibration process. Rev. 1.0 NOTE: If the calibration standard is higher than either the Low Concentration or the High Concentration Alarms, the system will not exit Calibration until the reading is below both the alarm set points. NOTE: The 4-20mA output will NOT track the calibration To return to the previous screen press the BCK button. Gas Calibration (Manual) Running: Description: Displays the current concentration reading, the number of seconds remaining and if the reading is above the concentration alarm set points. To cancel the calibration process, press the Cancel button. This will return to the previous screen as long as the reading is below the Concentration Alarms. 30 of 77

31 Gas Calibration (Manual) Complete: Rev. 1.0 Description: Calibration Factor is a parameter that is used as a multiplying factor that scales and/or calibrates the displayed concentration value. Increasing the Calibration Factor value will cause the displayed concentration to increase and decreasing the Calibration Factor value will decrease the displayed concentration. Most analyzer systems use Calibration Factor values between 3.0 and 4.0. Press the Accept button to complete the calibration or the Cancel button to discard the calibration. The display will return to the Gas Calibration (Manual) screen after pressing either button. Gas Calibration (Auto): 31 of 77

32 Description: Next: Interval: Dwell Times: Cal Standard: start. This screen shows when the next Auto Calibration will start, Auto Calibration cycle, gas dwell times, calibration standard used in the Auto Calibration process, if Auto Calibration is enabled or not, and the current Auto Calibration factor. The start time and date for when the next auto calibration is to The interval time is the frequency at which the auto calibration function will execute. Dwell times are the duration in minutes that the calibration gas and purge gas will remain on. AutoCal standard is the concentration of the calibration gas used during Auto Calibration. AutoCal Enabled: Cal Factor: Start Button: Purge Button: Shows if the Auto Calibration option is enabled. The Cal Factor is a number ranging from 0.8 to 1.2 (determined by Auto Cal Limit under Config) that is the current Cal Factor. The Cal Factor is updated at the end of each Auto Calibration cycle. Initiates the Auto Calibration sequence. Note that valid Auto Calibration information must be stored using Config and the System Clock must be set correctly. Initiates the Purge Gas Cycle. Note that valid Auto Calibration information must be stored using Config and the System Clock must be set correctly. 32 of 77

33 The Purge Gas Cycle is ordinarily activated to purge the sample system for a period of minutes specified by Auto Cal Purge Gas Dwell Time. Rev. 1.0 Reset Button: Config Button: Back Button: During startup and operation of an Auto Calibration analyzer it is sometimes useful to restart the Auto Calibration calculations with a known Calibration Factor. Reset Calibration Factor allows quick reset of the Calibration Factor to l.0. To edit the parameters of the Auto Calibration cycle. Return to the previous screen. Gas Calibration (Auto) Configuration: 33 of 77

34 Select the parameter that needs to be updated. AutoCal Start Time and Date: This sets the Time and date of the next Auto Calibration cycle. Press the Back button to return to the previous screen. AutoCal Dwell Times: 34 of 77

35 Span: Purge: The number of minutes that the Calibration Standard will run in the calibration process. Auto Cal Purge Gas Dwell Time is the number of minutes that the purge gas is applied to the sample system inlet to purge the analyzer before switching back to the sample gas stream. To enter a new time: 1. Select the parameter that is to be edited by pressing the data field. The indicator next to the selected data field will turn blue to indicate that it is selected. 2. Enter in the new value for the time (ex. 15). The new value will be displayed above the keypad 15. To clear an incorrect value, press the CLR then re-enter the value. 3. Press the Ent button to accept the value. 4. The entered value will be displayed at Span = 15. To return to the previous screen press the BCK button. AutoCal Intervals: 35 of 77

36 Minutes: Hours: Days: The number of minutes between cycles. The number of hours between cycles. The number of days between cycles. To enter a new value: 1. Select the parameter that is to be edited by pressing the data field. The indicator next to the selected data field will turn blue to indicate that it is selected. 2. Enter in the new value for the time (ex. 15). The new value will be displayed above the keypad 15. To clear an incorrect value, press the CLR then re-enter the value. 3. Press the Ent button to accept the value. 4. The entered value will be displayed at Minutes=15. Note: The three values are accumulative. Example if Days = 1 and Hours = 2 and the last AutoCal was at 13:00 on 5/15/12 the next AutoCal cycle will be at 15:00 on 5/16/12. To return to the previous screen press the BCK button. AutoCal Set-up: 36 of 77

37 Cal Gas: Limit: Enabled: Cal Gas allows the operator to input the concentration of the calibration gas used during Auto Calibration. Limit is a parameter, in percent, which determines how much an Auto Cal cycle can vary the computed concentration value. For instance, when the Auto Cal Limit is set to 20, the Auto Cal Factor may range 20% above and below a unity calibration factor (1.0). A 20% Auto Cal Limit would correspond to an Auto Cal Factor that ranged from 0.8 to 1.2. If, during an Auto Cal cycle, the newly calculated Auto Cal Factor is outside this range, the analyzer will fail the Auto Cal Cycle and keep the old Auto Cal Factor. Enables or disables the auto calibration feature. To enter a new value: 1. Select the parameter that is to be edited by pressing the data field. The indicator next to the selected data field will turn blue to indicate that it is selected. 2. Enter in the new value for the gas standard (ex. 25). The new value will be displayed above the keypad 25. To clear an incorrect value, press the CLR then re-enter the value. 3. Press the Ent button to accept the value. 4. The entered value will be displayed at Cal Gas = To enable or disable the auto calibration, press the Enabled button. To return to the previous screen press the BCK button. Gas Calibration (Auto) Running: 37 of 77

38 Description: Cancel: This feature provides software-controlled solenoid valves used to automatically calibrate the analyzer at user-selected time intervals. This is a 5-step process. The start time, time interval, and gas dwell times are set using Auto Cal Configurations and AutoCal Dwell Times Purge. The Auto Cal process is outlined below. The "Cancel" button will stop the Auto Calibration process and return to the main AutoCal screen. By cancelling the Auto Calibration process no changes are made to the calibration factors. Step 1: The sample gas is turned off The calibration gas is turned on Alarm output states are frozen The analyzer waits for the dwell time specified in AutoCal Dwell 38 of 77

39 Times The analyzer turns on the Tape Advance on Demand The 4-20mA output tracks the calibration Rev. 1.0 Step 2: Step 3: The calibration gas is turned off The purge gas is turned on The display and 4-20 ma output is held at the current concentration The analyzer waits for two minutes (As Found ) The analyzer calculates the new Auto Cal Factor based on the cal gas value entered in AutoCal Parameters Cal Gas The analyzer makes sure the new Auto Cal Factor is within the limits specified by Auto Cal Limit (If an AutoCal failure occurs, the diagnostic alarm is activated and no updates are made) The display and 4-20 ma output is updated to show this new value, and held constant The analyzer waits for two minutes (As Left ) Step 4: Step 5: The analyzer releases the display and 4-20 ma output If the value of the Purge Gas Dwell Time is greater than 4 minutes, the analyzer waits for the Purge Gas Dwell Time to expire The purge gas is turned off The sample gas is turned on The 4-20mA output and alarms are returned to normal operation To cancel the calibration process, press the Cancel button. This will return to the previous screen. AutoCal Purge Screen: 39 of 77

40 Description: Cancel: This feature will flow the purge gas through the sample system for the amount of time set for "Purge Dwell Time". The "Cancel" button will stop the Purge gas process and return to the main AutoCal screen. LED/Detector Calibration: 40 of 77

41 LED Voltage: Detector Voltage: At analyzer startup the voltage to the LED is set to the parameter value stored in LED/Detector Calibration LED Voltage. After setting a new value in LED Voltage the screen will update the current LED voltage and the Detector Voltage. The voltage read from the detector. The detector voltage should be between 2.80 and By raising or lowering the LED voltage, the Detector voltage will be changed in the same direction. To enter a new value: 1. Enter in the new value for the LED Voltage (ex. 2.25). The new value will be displayed above the keypad To clear an incorrect value, press the CLR button then re-enter the value. 2. Press the Ent button to accept the value. 3. The entered value will be displayed at LED Voltage= Verify that the detector voltage is between 2.80 and To return to the previous screen press the BCK button. 4-20mA Calibration Screen: 41 of 77

42 Description: This screen is used to calibrate the loop current output to an external current meter. The current meter must be inserted in the loop between the analyzer and the final measuring device. The operator enters the values measured on the current meter for the 4mA and the 20mA. Reset: The Reset button returns the calibration factors back to 4.00 and To enter a new value: 1. Press the 4mA button. The 4mA button text will turn Red to indicate it is selected. 2. Enter in the value measured with the external device (ex. 3.98). The new value will be displayed above the keypad To clear an incorrect value, press the CLR then reenter the value. 3. Press the Ent button to accept the value. The 4mA output will be updated. 4. Press the 20mA button. The 20mA button text will turn Red to indicate it is selected. 5. Enter in the value measured with the external device (ex ). The new value will be displayed above the keypad To clear an incorrect value, press the CLR then reenter the value. 6. Press the Ent button to accept the value. The 20mA output will be updated. 7. Repeat steps 1-6 as needed. To return to the previous screen press the BCK button. V System Configurations From the main screen press the Set-Up button. This will bring up the Tape Advance screen. 42 of 77

43 Tape Advance Set-Up: Rev. 1.0 Interval: Duration: Tape Advance Interval Time parameter causes the analyzer to utilize a particular spot on the CHEMFILM TM for the number of minutes specified. The analyzer will wait for the specified time period even if the detector voltage drops below the Low Threshold Value unless the Advance on Demand parameter is set to ON. The default value of 5 minutes is long enough to effectively utilize the CHEMFILM TM. The Tape Advance Duration Number determines how long the tape advance motor is run. The tape advance motor run time determines the spacing between reaction spots on the CHEMFILM TM. Ordinarily a default value of 25 spaces the spots on the tape at about 3 /8-1 /2 intervals. On Demand: When set to OFF, the tape advance cycle is triggered only by the Tape Advance Interval Time. When set to ON, the tape advance cycle may be triggered by the first occurrence of either the Tape Advance Interval Time, or when the detector voltage reaches the Lower Threshold Value. To enter a new value: 1. Select the parameter that is to be edited by pressing the data field. The indicator next to the selected data field will turn blue to indicate that it is selected. 2. Enter in the new value (ex. 15). The new value will be displayed above the keypad 15. To clear an incorrect value, press the CLR button then re-enter the value. 3. Press the Ent button to accept the value. 4. The entered value will be displayed at Interval = To enable or disable the On Demand, press the ON/OFF button. 43 of 77

44 To return to the previous screen press the BCK button. Rev. 1.0 Data Logger Set-Up: The Data Logger option allows for the easy collection and transfer of analyzer data. The Data Logger uses an industry standard SD Card that can be inserted into a laptop or desktop computer to retrieve the stored information. Two events will cause data to be logged to the SD Card. First, a configurable timer controls the period (in minutes) between data log entries under normal conditions. Additionally, the analyzer will create a log entry when the H2S concentration varies by a set amount. That amount is also configurable. See below for more information. Interval: Change: Interval indicates the time period (in minutes) that the analyzer will record concentration values to the Data Logger SD Card log file. Change indicates a change in concentration that will cause a new entry to be written to the Data Logger SD Card log file. If the current measured concentration has changed by more than the Change value from the last value logged to the SD Card, before the time in Interval has elapsed since the last log, the data will be written to the SD Card. To enter a new value: 1. Select the parameter that is to be edited by pressing the data field. The indicator next to the selected data field will turn blue to indicate that it is selected. 2. Enter in the new value for the time (ex. 5). The new value will be displayed above the keypad 5. To clear an incorrect value, press the CLR then re-enter the value. 44 of 77

45 3. Press the Ent button to accept the value. 4. The entered value will be displayed at Interval=5. Rev. 1.0 To return to the previous screen press the BCK button. CAUTION: The SD Card should NOT be inserted or removed from the analyzer when the analyzer is on. Damage to the data files, the SD Card, or the analyzer may occur. Installing and Removing the SD Card To install the SD Card: 1. Turn the analyzer OFF. 2. Insert the SD Card, labeled side pointed up, into the Data Logger Port. (The SD card will only fit one way.) 3. Turn the analyzer ON. Data Logging will begin automatically. To remove the SD Card: 1. Turn the analyzer OFF. 2. Press SD Card in and release the latch. The SD Card will eject slightly. 3. The card may now be safely removed from the Data Logger Port. 4. Turn the analyzer ON. Data Logger Data Format 45 of 77

46 The analyzer names data files on the SD Card according to the following format: YYMMDD.CSV, where YY = year (as set in the analyzer s clock) MM = month (as set in the analyzer s clock) DD = day (as set in the analyzer s clock) Example: today s date is 01/30/2014 so today s log file will be CSV The.CSV file is a comma separated file and may be opened by any text or spreadsheet program. The format of the data is as follows: HH:MM:SS,ppm[,D][,L][,H] Where HH:MM:SS = time of log (as set in the analyzer s clock) PPM = Concentration of gas D1 = H2S Out of Tape Diagnostic Alarm Active D2 = H2S Broken Tape Diagnostic Alarm Active L = Low Concentration Alarm Active H = High Concentration Alarm Active D, L and H only appear in the log if the alarm is active. Modbus Address: 46 of 77

47 Description: Address: Baud: This is only used when the analyzer is equipped with the Modbus option. The device address that the analyzer will respond to when using the Modbus protocol. Acceptable addresses are 1 through 250. The device Rate is the Baud rate for the communication protocol. To change the baud rate, enter the number for the corresponding rate required (ex. 6 for 57600). To enter a new value: 1. Select the parameter that is to be edited by pressing the data field. The indicator next to the selected data field will turn blue to indicate that it is selected. 2. Enter in the new value for the Modbus Address (ex. 50). The new value will be displayed above the keypad 50. To clear an incorrect value, press the CLR button then re-enter the value. 3. Press the Ent button to accept the value. 4. The entered value will be displayed at Address = 50. To return to the previous screen press the BCK button. Unit of Measure: 47 of 77

48 Description: Concentration Units allows the operator to select concentration processing and display in PPM or in grains. Press the Unit of Measure button to be selected, PPM or grains. The text on the button will turn red to indicate it is selected. The dot on the button will also be filled on the selected Unit of Measure. NOTE: If Unit of Measure is changed, Low Concentration Alarm, High Concentration Alarm, 4-20mA Scale and Calibration Gas Standard need to be updated to reflect the selected unit of measure. If optional Data Logger is installed PPM change also needs to be updated. To return to the previous screen press the Back button. 4-20mA Loop Scale: 48 of 77

49 Description: The 4 20 ma Loop Scale value is used to scale the current concentration value into a range represented within the 4 20 ma signal range (i.e. 0 PPM is represented by 4 ma and a concentration which equals the 4-20 ma Loop Scale value is represented by a 20.0 ma signal). To enter a new value: 1. Enter in the new value for the 4-20mA Scale (ex. 25). The new value will be displayed above the keypad 25. To clear an incorrect value, press the CLR button then re-enter the value. 2. Press the Ent button to accept the value. 3. The entered value will be displayed at Scale = 25 To return to the previous screen press the BCK button. W System Information From the main screen press the System button. This will bring up the System Information screen. 49 of 77

50 Software: Analyzer: LED: Detector: 4-20mA: Display: Factory: Config: Back: The Software Version parameter is a Read Only value that displays the current software version as major version dot minor version value (i.e , 1.003, etc.). Major and minor versions are expected to increase as analyzer software development continues. The Analyzer Full Scale Range is used to display the upper reading limit of a particular analyzer configuration. The analyzer comes from the factory configured to the customer s specifications. The analyzer 4-20 ma scale may be set lower but not higher than the maximum full-scale range as configured from the factory. Displays the current voltage powering the LED. Displays the current voltage from the Detector. Displays the current amperage being applied to the 4-20mA output. Button to display the screen to set the display brightness. Button to display the screen for setting all parameters to factory settings. Button to display the system configuration screen. Returns to previous screen. Display Configuration: 50 of 77

51 Description: Slider: Back: Shows the current settings for the display backlight. Slide left and right to adjust the brightness of the display. To return to the previous screen. Instantaneous Response: 51 of 77

52 Description: In order for the analyzer to detect and display short term changes to the concentration, this parameter sets the ± range of concentration values which will cause the analyzer to reset the concentration value average buffer. By clearing the concentration value average buffer, the displayed concentration will tend to track the most current collected concentration data rather than averaging the data. This is a factory setting and should only be set at the factory. Changing this value could affect the operation of your analyzer. To enter a new value: 1. Enter in the new value for the Instantaneous Response (ex. 40). The new value will be displayed above the keypad 40. To clear an incorrect value, press the CLR button then re-enter the value. 2. Press the Ent button to accept the value. 3. The entered value will be displayed at Resp % = 40. To return to the previous screen press the BCK button. Number of Averages: 52 of 77

53 Description: This parameter is used to set the number of concentration values stored and averaged at each display cycle. Each time the analyzer scans the detector input and creates a new concentration value, the value is then stored into a circular queue. All of the values in the queue are then summed and averaged in order to generate an average concentration. The Number of Averages value determines how many entries are contained in the queue. Note that System Resets and abnormally high/low concentration values will cause the queue to empty and restart with a single entry and fill to the number of entries specified in the Number of Averages parameter. This is a factory setting and should only be set at the factory. To enter a new value: 1. Enter in the new value for the Number of Averages (ex. 50). The new value will be displayed above the keypad 50. To clear an incorrect value, press the CLR button then re-enter the value. 2. Press the Ent button to accept the value. 3. The entered value will be displayed at Averages = 50. To return to the previous screen press the BCK button. Coefficient 1: 53 of 77

54 Description: Coefficient is a factory calibration factor and should only be set at the factory. DO NOT CHANGE THIS VALUE. CHANGING THIS VALUE WILL INVALIDATE YOUR ANALYZERS CALIBRATION. This is a factory setting and should only be set at the factory. To enter a new value: 1. Enter in the new value for the Coefficient 1 (ex. 2.5). The new value will be displayed above the keypad 2.5. To clear an incorrect value, press the CLR button then re-enter the value. 2. Press the Ent button to accept the value. 3. The entered value will be displayed at Coef1 = To return to the previous screen press the BCK button. Factory Reset: 54 of 77

55 Reset: To set the analyzer to the Factory Default settings and return to the previous screen. 0-1: Sets all parameters to set the analyzer full range to 1PPM. 0-50: Sets all parameters to set the analyzer full range to 50PPM : Sets all parameters to set the analyzer full range to 300PPM. 0-%: Sets all parameters to set the analyzer full range to % level. Back: To return to the previous screen without setting the analyzer to Factory Default settings. Additional hardware may need to be installed in order to change the analyzer range. Consult the factory before changing the analyzer range. X Clock Configuration 55 of 77