Field Instruments

General

The device is used for measuring/controlling the pH, ORP or  NH3 (ammonia) concentration. The function is switchable on the device itself. Depending on the measured variable, combination electrodes (e. g. pH/redox combination electrodes, gas-sensitive sensors) or split versions (glass/metal electrodes with a separate reference electrode) can be readily connected. Temperature serves as the second input variable, measured by a Pt100/1000, for example. It is

Therefore possible to implement automatic temperature compensation for the pH and NH3 variables.

The devices are operated using unambiguous keys and a large LC graphics display on which the measurements are clearly legible. The plain-text presentation of the parameters makes it easier for the user to configure the device, and also helps in programming it correctly.

Thanks to its modular design, the device can be perfectly matched to the specific application requirements. Up to four outputs are available (see the block diagram for the functions). Typical areas of application

Universal application in water and wastewater engineering, service/process water and wastewater, drinking water and well/surface water, leakage monitoring in refrigeration plant.

Features

• Directly switchable to pH, ORP or NH3 (ammonia) concentration
• Automatic temperature compensation
• Large LC graphics display with background lighting
• Choice of display mode: large numbers, bar graph or trend display
• Solder-free connection system
• Calibration options according to measured variable: 1-/2-/3-point calibration
• Calibration logbook
• Impedance measurement can be activated for pH measurement
• Symmetrical and asymmetrical connection of pH sensors
• pH-ISFET sensors can be connected thanks to the sensor supply integrated in the output
• IP67 protection (in surface mountable housing) IP65 protection (for panel mounting)
• Language changeover: German, English, French; further languages can be loaded through the setup program
• Using the setup program: user-friendly programming, plant documentation, additional languages can be loaded

Specifications

• Make: JUMO
• Model: 202560/20-888-888-310-310-25/000
• Part Number: 00480049
• Basic type extensions- 20:  for Surface mounting
• Output – 888: Analog output 0(4) to 20 mA or 0(2) to 10 V
• Output 2 – 888: Analog output 0(4) to 20 mA or 0(2) to 10 V
• Output 3 – 310: relay with changeover (SPDT) contact
• Output 4 – 310: relay with changeover (SPDT) contact
• Supply voltage- 25: AC/DC 20 to 30 V, 48 to 63 Hz
• Extra Codes- 000: none

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk