Intelligent ph Converter PH400G. PH400G Intelligent ph Converter. Bulletin 12B7C1-01E.

Transcription

1 Intelligent ph Converter PH400G PH400G Intelligent ph Converter Bulletin 12B7C1-01E

2 Places a multitude of functions at your fingertips EXA PH Intelligent ph Converter (Model PH400G) The system in the EXA PH series an intelligent converter now makes its debut. This design from Yokogawa responds to a multiplicity of needs and supports applications across a board range of fields. For reliable ph measurement, you can depend on the PH400G. Three security levels for ph converter operation Operation level: For routine inspection and maintenance Setting level: For parameter setup Service level: For operating conditions setup phx User-configurable contact outputs for superior costperformance High- and low-limit contact outputs enable even proportional control to be implemented with no additional instruments. Built-in cleaning timer function Built-in cleaning timer eliminates the need for separate timers. The design permits routine operation with the cover closed The Operation level operations (routine inspection and maintenance) can be done without opening the cover; you press keys built into the cover itself. Interactive operation Operations are executed simply by selecting Yes or No in response to the messages on the large-format display. One-touch automatic calibration Calibration is done with one touch of a key after inserting the sensor in the calibration solution. Measurement status visible at a glance of the display Process information (ph, temperature), and ph meter operating status can be seen at a glance.

3 Demonstrates its true worth in system System configurations PH400G intelligent ph converter can handle a wide range of ph measurement tasks, from general measurement to highpurity water and fermentation applications. Their reliability systems from Yokogawa s more than 40 years of experience in ph measurement, enabling these systems to cope with a broad variety of process lines. Up to 5 m standard between PH400G and detector max. 20 m using intermediate terminal box Flow-through type holder PH8HF Cleaning system: Ultrasonic, jet, brush Holders: Flow-through type, submersion type, high-purity water Intermediate terminal box PH8TBG Solenoid valve, PH8MVF for jet cleaning or brush cleaning Water or air AIntelligent ph converters PH400G Cleaning contact output Power supply 88 to 132 V AC, 50/60 Hz or 176 to 264 V AC, 50/60 Hz Failure contact output Maintenance contact output High-/low-limit alarm/control contact output Cleaning interval, time, and total time can be set at the PH400G Use according to cleaning system ph detectors Holders and holder with cleaners Cleaning accessories Accessories PH8AX Flow-through type holders Submersion type holders Jet, brush cleaning Sensor stand Flowthrough Guide pipe Solenoid type PH8HG valve PH8HF PH8MV KCI refillabletype PH8ERP Without cleaning Calibration reagents and KCI KCI filling-type PH8EFP PH8EHP for high-purity water PH8HH for high-purity water Ultrasonic, jet, brush Submer sion type PH8HS No cleaning Ultrasonic, jet, brush Ultrasonic oscillator PUS400G <System configuration example> Submersion type holder and brush cleaning Highly Reliable ph Detector Ryton sensor body The sensor body is made of Ryton, a corrosion- and heatresistant material with excellent mechanical strength. This ph detector covers virtually and application and can be utilized commonly by all types, both submersion and flow-through, regardless of whether equipped with a cleaning system or not. Replaceable electrodes reduce maintenance cost Both the glass electrode and junction can be easily replaced without tools. Each can be replaced individually, for lowest maintenance cost. Junction Pt1000Ω RTD temperature sensor The temperature sensor is a Pt1000Ω RTD which gives one-touch auto calibration even higher accuracy. It also permits conversion Glass electrode KCI filling-type ph detector PH8EFP

4 Realizes Highly Reliable and Accurate ph Measurement Chemical Cleaning ph Measuring System Automatic cleaning saves labor The automatic cleaning option line-up includes brush, jet, ultrasonic, and chemical cleaning, allowing you to select the best automatic cleaning system for your application. Brush cleaning Vigorous 600 rpm brush rotation. Jet cleaning Powerful jet blasts away deposits. Ultrasonic cleaning Frequency sweep system ensures effective cleaning. Chemical cleaning Immerses the sensor in a chemical cleaning agent to chemically dissolve and remove deposits. <PH8HS3> <PH8SM3> System configuration 2 Power supply unit* 3 ph Converter Control Box Cleaning Operation During measurement (1) Withdrawal of the ph detector from the process For wash, the ph detector and holder are withdrawn by the air cylinder and housed in the cleaning chamber with the bottom cover closed. Working parts are not in contact with the process, which ensures reliable long-term operation. These mechanical actions are automatically selfdiagnosed. Holder Chemical solution tank Bottom cover ph detector During wash/on standby (2) Chemical cleaning An approximately 100 ml of chemical (e.g., 5% hydrochloric acid) is dosed and sent to the cleaning chamber by air pressure. Forced air is directly used for air bubble cleaning. Air bubbling provides dramatically improved cleaning effectiveness that is the same as the one manual cleaning can do. 4 [Chemical cleaning unit] <Field> ph detector 1 *In ease of the ph400g 1 ph detector (PH8EFP) 2 Holder (PH8HS3) 3 ph Converter (PH400G) or ph Transmitter (PH202G) + Distributor(PH201G) 4 Chemical cleaning unit (PH8SM3) ph detector Cleaning chamber Chemical/ air inlet

5 Damaged glass membrane low liquid level ph 90% 90% response time EMF a 7 AConvenient self-diagnostic functions give strong support Electrode deterioration diagnostics Electrode deterioration is one of the prime concerns in ph Time measurement. The PH400G measures slope, asymmetry potential, and 90% response time at calibration, allowing objective monitoring of electrode deterioration. Sensor diagnostics during measurement Slope : c / b The sensor is continuously diagnosed for important problems such as reference electrode impedance and ph glass electrode damage. The FAIL alarm output notifies you immediately if a problem occurs, permitting ph measurement without fear of failure. Asymmetry potential : a b Asymmetry potential-slope c Inside the cover Operating the setting-level and service-level functions Pressing the (*) key enables the setting level and service level functions (used, respectively, to set startup parameters and change ph meter operating conditions.) User-set output range The output range can be set for spans as narrow as 1 ph, allowing you to select the span that exactly fits you application. Multifunctional design reduces cost The PH400G provides a wealth of contact outputs (control, hold, cleaning timer, and failure), a temperature output, and other features that reduce total system cost. These functions are set up with the cover open. Works with a variety of ph detectors In addition to the EXA PH detector, the PH400G can be used in combination with a PH detector or with detectors for fermentation applications. (With some limits, however, on performance and functions.) Consult Yokogawa concerning use with other detectors.

6 Specifications PH400G Intelligent ph Converter Measurement range Display type Display information 2 to 15 ph Digital liquid crystal display ph, temperature, ma output, mv output, reference electrode impedance, asymmetry potential, slope, EMF (mv), error display, hold display, 90% response time Calibration One-touch automatic calibration (interactive), manual calibration Temperature compensation Automatic/manual Conversion to reference Possible temperature Cleaning timer function Built-in Self-diagnostic functions For electrodes, and converter itself 4 to 20 ma DC isolated transmission output, 0 to 1 V DC Transmission signals isolated transmission output (4 to 20 ma and 0 to 1 V signals not mutually isolated) Transmission signal range Can be set for any desired span of 1 ph or more Power supply voltage 88 to 132 V AC, 50/60 Hz or 176 to 264 V AC, 50/60 Hz Ambient temperature 10 to 55 C JIS C0920 water-tight, equivalent to NEMA type 4 Construction waterproof construction PH8SM3 Chemical Cleaning ph Measuring System Continuous measurement Function Moves the ph detector up and down using an air cylinder, and performs chemical cleaning at regular intervals. Cleaning method Automatic chemical cleaning using air bubbling Cleaning interval 0.1 to 36 hours, user configurable Cleaning duration 0.1 to 10 minutes, user configurable. Relaxation time 0.1 to 10 minutes, user configurable. Chemicals Acid/alkaline solutions Cylinder failure (system diagnostic function), asymmetry potential failure, slope failure, electrode impedance failure, Self-diagnostic function sample ph/temperature failure, etc. (PH202G/PH400G s diagnostic function) Signal output 4 to 20 ma DC and 0 to 1 V DC (ph or temperature, selectable) Freestanding rack for indoor installation (For outdoor Construction installation, select Teflon tube and optional tank cover) Ambient temperature 0 to 45 C Power supply 100 VAC, 50/60Hz Air supply 300 to 950 kpa, (Consumption: approx. 10 Nl/min) Refer to GS 12B7A1-E for details. Mounting Signal cable inlet Weight Dimensions Repeatability Response time Accuracy 50 mm pipe mounting, wall or rack mounting, panel mounting JIS A15 equivalent watertight plastic gland Body, approx. 2.5 kg Mounting hardware, approx. 0.4 kg (mm) 0.05 ph (Electrode submerged 3 times in the same buffer solution) 10 seconds (90% response, using ph detector standard solution equilibrated to 20 C, with adequate agitation) 0.1 ph (using KCR refillable type ph detector) 0.15 ph (using KCR filling type ph detector) Temperature repeatability 1 C Refer to GS 12B7C1-E for details. YOKOGAWA ELECTRIC CORPORATION World Headquarters 9-32 Nakacho 2-chome, Musashino-shi, Tokyo , JAPAN Tel: Fax: North America YOKOGAWA CORPORATION OF AMERICA Georgia, U.S.A South America YOKOGAWA AMERICA DO SUL LTDA. BRAZIL Europe YOKOGAWA EUROPE B.V. European Headquarters THE NETHERLANDS YOKOGAWA ELECTRIC CIS LTD. RUSSIAN FEDERATION Middle East YOKOGAWA MIDDLE EAST B.S.C.(C) Singapore YOKOGAWA ENGINEERING ASIA PTE. LTD. Korea YOKOGAWA ELECTRIC KOREA CO., LTD. China YOKOGAWA CHINA CO., LTD. YOKOGAWA SHANGHAI INSTRUMENTATION CO., LTD. YOKOGAWA SICHUAN INSTRUMENT CO., LTD. Taiwan YOKOGAWA TAIWAN CORPORATION India YOKOGAWA INDIA LTD. Australia YOKOGAWA AUSTRALIA PTY. LTD. Represented by: Vig-PMK-G NL-10E Printed in Japan, 302(KP) [Ed : 03/b] Subject to change without notice. All Rights Reserved, Copyright c 1992, Yokogawa Electric Corporation.