Dissolved Oxygen Measurement liquisys S COM 223 / 253

Transcription

1 Technical Information TI 199C/07/en No Dissolved Oxygen Measurement liquisys S COM 223 / 253 Oxygen Transmitter Benefits at a glance Measuring transmitter in field or panel-mounted housing Universal application Switchable between oxygen concentration in mg/l and saturation index in % SAT via software switching Simple handling Logically arranged menu structure with plain text in 6 languages facilitates instrument configuration Large, two-line display indicates measured value and temperature at the same time Ultrasimple one-point calibration in air or in the medium Safe operation Liquisys S COM 223 Liquisys S COM 253 Due to the modularity of its design, the Liquisys S COM 223 / 253 transmitter can be adapted to a wide range of customer needs. The basic version, which provides simple measuring and alarm signalling functions, can be equipped with additional software and hardware modules to match specific applications. Retrofitting of expansion modules is also possible. Areas of application Sewage treatment plants Effluent treatment Water treatment and water monitoring Drinking water Surface water: rivers, lakes, ocean Fish farming Overvoltage (lightning) protection according to EN Direct access for manual contact control The basic unit can be extended with: 2 or 4 contacts for use as: Limit contacts (also for temperature) P(ID) controller Timer for simple rinse processes Complete cleaning with Chemoclean Plus package: Automatic pressure compensation Any current output configuration via table Automatic initiation of cleaning in case of alarm or limit violation Live check of sensor Process monitoring HART or Profibus PA 2nd current output for temperature Quality made by Endress+Hauser ISO 9001 Endress +Hauser Nothing beats know-how

2 Details Liquisys S COM 223 / 253 provides a solution for all water and waste water treatment applications. Features of the basic version (DX): Measurement of oxygen concentration in mg/l or % saturation This is selected via the menu. The temperature is displayed at the same time or, if desired, not shown at all. The DS version provides additional functions: po 2 The oxygen concentration not only depends on the local altitude but also on the weather (pressure). The automatic pressure compensation function takes these fluctuations into account. The COS 4 sensor has no zero current and therefore only requires one-point calibration. This is performed in air (corresponding to 100% saturation) or by reference calibration in the medium. E017 E Different alarms are required depending on application and operator. Therefore the Liquisys S COM 223 / 253 permits independent configuration of the alarm contact and error current for each individual error. Unnecessary or undesirable alarms can be suppressed in this manner. on off on off on Timer 2.4 / 22 ma off on off t on off on off Chemoclean Up to four contacts can be used as limit contacts (also for temperature), to implement a P(ID) controller or for cleaning functions. Direct manual operation of the contacts (bypassing the menu) provides quick access to limit, control or cleaning contacts, permitting speedy correction of deviations. t 20 ma 0 In order to display wide measuring ranges while still achieving a high resolution in specific ranges, the current output can be configured as required via a table. This permits bilinear or quasi-logarithmic curves, etc. 20 ma 0 t The live check issues an alarm when the sensor signal does not change over a defined period of time. This may be caused by blocking, passivation, separation from the process, etc. The Process Check System is used to monitor adjustable time intervals, e.g. for permanent aeration or permanent absence of aeration. Instrument DATA S e 3 63 The serial numbers of the instrument and modules and the order code can be called up on the display. 2

3 Basic version and plus package MEASUREMENT Basic version With plus package (DS version) Alarm signalling CALIBRATION Read instrument DATA Linear CURRENT OUTPUT CURRENT OUTPUT simulation Automatic PRESSURE COMPENSATION PROCESS CHECK SYSTEM for monitoring, e.g. of aeration LIVE CHECK of sensor 1 programmable ALARM CONTACT (contact and error current) CURRENT OUTPUT programmable (table) Additional features Additional features Controlling 2 CHANGEOVER CONTACTS for Measuring parameter limit Temperature limit P(ID) controller Timer for cleaning Automatic cleaning triggered by alarm or limit violation Additional features Additional features Cleaning 2 more CHANGEOVER CONTACTS (total of 4) for Measuring parameter limit Temperature limit P(ID) controller Chemoclean cleaning (water and cleaning agent) Cleaning triggered externally or automatically by alarm or limit violation Measuring and control system Complete measuring systems with Liquisys S COM 223 / 253 A complete measuring system comprises: the oxygen transmitter Liquisys S COM 223 or COM 253 an oxygen sensor COS 4 with an integrated NTC temperature sensor an immersion, flow or retractable assembly Options: extension cable (type CMK), and junction box VBM. Weather protection cover CYY 101 Universal suspension assembly holder CYH 101 Liquisys S COM 253 ENDRESS+HAUSER LIQUISYS Up to 4 relays Alarm contact CAL E REL ALARM Signal output 1: oxygen Signal output 2: temperature (optional) Aux. 15 V supply voltage 2 digital inputs Immersion assembly CYA 611 Oxygen sensor COS 4 Power supply Retractable assembly COA 461 Liquisys S COM 223 ENDRESS+HAUSER LIQUISYS CAL E REL ALARM OM2X3SYS.CDR 3

4 Operation LCD-O2-E.CDR ENDRESS+HAUSER LIQUISYS Liquid crystal display for display of measured values, configuration data and current menu field 273 mg/l R362 ALARM CAL REL E Setpoint Field for user labelling Key for manual relay switching LED indicator for alarm function User interface: Display and keys 4 main control keys for calibration and instrument configuration Key for switching between automatic and manual relay operation LED indicators for switched limit outputs Everything at a glance The display simultaneously shows the current measured value and the temperature the essential process data. Brief informational texts in the configuration menu provide assistance with parameter configuration. Intelligent and simple All instrument control functions are arranged in a logical menu structure. Following access code entry, the individual parameters can be easily selected and modified as needed. CALIBRATION Calibration in air or in the medium Display MEAS. VALUE TEMPERATURE Current temperature display can be suppressed by pressing the plus key Display of active errors (sequence according to priority) SETUP 1 Selection of measurement type and unit, adjustment of measured value filter, altitude adjustment SETUP 2 Temperature measurement, salinity correction CURRENT OUTPUT Adjustment of current output assignment, curve and simulation for verification ALARM User adjustment of errors to switch relay or generate error current (S version: automatic cleaning trigger in the event of an alarm) CHECK Process Check System and live check alarm adjustment Overview of Liquisys S COM 223 / 253 menu. This overview covers all the options that can be installed (see page 2 Details). RELAYS SERVICE Up to 4 relays may be configured as limit contacts, a P(ID) controller, timer or for chemical cleaning (S version: automatic cleaning trigger in case of limit violation) Selection of language version, display of software or hardware serial numbers, entry of access codes OM2X3OP.CDR 4

5 Electrical connection All connections to the panel-mounted instrument COM 223 are established via the terminal strips on the rear. In the case of the field instrument COM 253, all wires (including the sensor cable) are connected to terminals in a separate wiring compartment. All the wiring can remain in place if the instrument needs repair because all repairs are limited to assembly replacement. So, dismantling the instrument and rewiring are no longer necessary. E Left: Liquisys S COM 223, connections on the rear of the instrument Right: Liquisys S COM 253, rear of instrument with replaceable electronics box (E) REAR223.TIF FELD2.CDR Sensor COS 4 S NTC bn rd ϑ Alarm* K A K gn A O Relay 1* Signal output 1: oxygen ma O Relay 2* Signal output 2: temperature (optional) ma ϑ Relay 3* Digital input V Relay 4* Digital input V optional *Contact status shown: no current or fault present Aux. voltage output V = L L+ N L Power supply Electrical connection of Liquisys S COM 223 / 253 ANO2-E.CDR 5

6 CAL ENDRESS+HAUSER LIQUISYS REL ALARM Dimensions ENDRESS+HAUSER LIQUISYS CAL E REL ALARM Dimensions of Liquisys S COM 223 XM223-2D.CDR E Dimensions of Liquisys S COM 253 XM253-2D.CDR 6

7 Mounting of Liquisys S COM 223 The panel-mounted version is mounted using the supplied tensioning screws. The required overall mounting depth is approx. 175 mm. Flat gasket (included in delivery) Mounting cutout according to DIN Installation of panelmounted housing approx. max XM223MON.CDR Mounting of Liquisys S COM 253 Weather protection cover CYY 101 (see Accessories) CYY101.CDR There are several mounting options for the field instrument: Mounting on a square-tube mounting post Mounting on cylindrical pipes Wall mounting with fastening screws Weather protection cover CYY 101 is required for outdoor installation. This cover is compatible with all field instrument mounting options. ➀ ➁ Proceed as follows to install the instrument on a square-tube mounting post (universal upright post CYY 102 or upright post of suspension assembly holder CYH 101): ➀ Install the weather protection cover on the upright post first. ➁ Attach the field instrument to the weather protection cover from the rear Universal upright post CYY 102 or identical upright post of suspension assembly holder CYH 101 (square tube, see Accessories); mounting of weather protection cover and field instrument YY CDR 7

8 Mounting of Liquisys S COM 253 (continued) M Post mounting kit for installation of field housing on cylindrical pipes (horizontal or vertical, max. 60 mm; see Accessories) MASTSATZ.CDR Mounting on cylindrical pipes (shown with weather protection cover installed on right) XM253MAS.CDR Wall mounting Screws: 6mm Anchors: 8mm XM253WAN.CDR 8

9 Technical data General specifications Manufacturer Endress+Hauser Product designation Liquisys S COM 223 Liquisys S COM 253 Input Measured quantities O 2, temperature O 2 measurement with sensor COS 4 Display and measuring range mg/l or % SAT Temperature compensation range C Pressure compensation range (optional) hpa Altitude adjustment range m Salinity adjustment range % O 2 signal input Signal current Slope adaptation Nominal slope (sensor in air, 20 C, 1013 mbar) Maximum length of cable to sensor na % of nominal slope 290 na 50 m Temperature measurement Temperature sensor NTC, 30 kω at 25 C Measuring range C Temperature offset range ±20 C Digital inputs 1 and 2 Voltage Current consumption V max. 10 ma Output O 2 signal output Current range 0 / ma, galvanically separated; error current 2.4 / 22 ma max. 500 Ω Load Output range mg/l or % SAT Isolation voltage max. 350 V rms / 500 V DC Overvoltage (lightning) protection acc. to EN :1995 Temperature signal output (optional) Current range 0 / ma, galvanically separated Load max. 500 Ω Output range adjustable, % of upper range value Isolation voltage max. 350 V rms / 500 V DC Overvoltage (lightning) protection acc. to EN :1995 Auxiliary voltage output Output voltage Output current 15 V ± 0.6 V max. 30 ma Contact outputs (floating changeover contacts) Switching current with ohmic load (cos ϕ = 1) Switching current with inductive load (cos ϕ = 0.4) Switching voltage Switching power with ohmic load (cos ϕ = 1) Switching power with inductive load (cos ϕ = 0.4) max. 2 A max. 2 A max. 250 V AC, 30 V DC max VA AC, 150 W DC max. 500 VA AC, 90 W DC Limit contactor Limit adjustment range Pickup / droput delay mg/l or % SAT s 9

10 Technical data (continued) Output (continued) Controller Function (adjustable) pulse length / pulse frequency controller Controller response PID Proportional band Kp: Period for pulse length controller s Frequency for pulse frequency controller min 1 Alarm Function (switchable) Alarm threshold adjustment range Alarm delay Monitoring time for lower limit violation Monitoring time for upper limit violation steady / fleeting contact; normally closed / open O 2 / temperature: complete measuring range s min min Accuracy O 2 measurement with sensor COS 4 Resolution Deviation of indication 1 Reproducibility Measurement deviation 1, O 2 signal output 0.01 mg/l or 0.1% SAT max. 0.5% of measuring range max. 0.2% of measuring range max. 0.75% of measuring range Temperature measurement Resolution 0.1 C Deviation of indication 1 max. 1.0% of measuring range Measurement deviation 1, temperature signal output max. 1.25% of current output range Ambient conditions Ambient temperature (nominal operating conditions) C Ambient temperature (limit operating conditions) C Storage and transport temperature C Relative humidity (nominal operating conditions) %, non-condensing Protection class of panel-mounted unit IP 54 (front), IP 30 (housing) Protection class of field housing IP 65 Electromagnetic compatibility interference emission acc. to EN :1992 interference immunity acc. to EN :1995 Physical data / design Dimensions of panel-mounted unit (H W D) mm Installation depth approx. 175 mm Dimensions of field housing (H W D) mm Weight of panel-mounted unit max. 0.7 kg Weight with field housing max. 2.3 kg Display LC display, two lines, five and nine digits, with status indicators Materials Housing of panel-mounted unit Front membrane Field housing polycarbonate polyester, UV-resistant ABS PC Fr Power requirements Supply voltage 100 / 115 / 230 V AC +10 / 15%, Hz 24 V AC/DC +20 / 15% Power consumption max. 7.5 VA Fuse protection fine-wire fuse, medium time-lag, 250 V / 1 A 1 acc. to IEC 746-1, for nominal operating conditions Subject to modifications. 10

11 Accessories Mounting accessories Type Features Order number Weather protection cover CYY 101 Universal upright post CYY 102 Suspension assembly holder CYH 101 Pendulum frame Post mounting kit For mounting on field housing, for outdoor installation Dimensions (H W D): mm Material: stainless steel Square tube for mounting of field housing Dimensions (H W D): mm Material: stainless steel For immersion assemblies with suspension bracket, e.g. CYA 611; for installation on basin or channel rim Materials: stainless steel / PE / PP / PA For pendulum suspension of assemblies, e.g. CYA 611 Material: stainless steel Kit for mounting of field housing on horizontal or vertical pipes ( max. 60 mm) Material: stainless steel CYY 101-A CYY 102-A CYH 101-A Assemblies Type Features Applications CYA 611 Immersion assembly with G 1, G ¾ or NPT ¾" thread Waste water, water COA 250 Probfit COA 461 Flow assembly with screwed G ¾ measuring water connection Retractable assembly with DN 50 or ANSI 2" flange Installation for flow operation, e.g. in waterworks or analytical cabinets Installation for in-line operation, e.g. in pipelines or on tank walls Oxygen sensor Type Features Applications COS 4 Amperometric two-electrode sensor in allplastic housing with permanently attached cable, cable length 7 m or 15 m, protection class IP 68, with integrated temperature sensor Waste water, drinking water, surface water, fish farming Cable extension Type Features Order number VBM CMK Junction box for extension of cable connection between measuring cable and instrument, protection type IP 65 Special measuring cable for extension of line between transmitter and junction box VBM

12 Product structure Oxygen transmitter Liquisys S COM 223 / COM 253 Version DX Oxygen measurement DS Oxygen measurement, automatic pressure compensation, additional functions Power supply V AC V AC V AC 8 24 V AC/DC Measurement output 0 Oxygen 1 Oxygen and temperature 3 Profibus PA 5 Oxygen with HART 6 Oxygen with HART and temperature Contacts 05 No additional contacts 10 2 contacts (limit / P(ID) / timer) 15 4 contacts (limit / P(ID) / Chemoclean) COM 223- complete order code for COM 223 COM 253- complete order code for COM 253 Endress+Hauser GmbH+Co. - Instruments International - P.O. Box 2222 D Weil am Rhein Tel. ( ) Fax ( ) Endress +Hauser Nothing beats know-how TI 199C/07/en/01.99 Printed in Germany / DT / CV5 ( )