Product description of OPM223/OPM253
Liquisys M OPM223/253 is a transmitter for pH/ORP measurement. It is available as panel-mounted housing (OPM223) or field housing (OPM253). The transmitter is suitable for analog, digital and ISFET sensors. The modular design of the Liquisys M OPM223/253 allows easy adaption of the transmitter to a variety of customer requirements. Starting with the basic version for "measurement and alarm generation", the transmitter can be equipped with additional software and hardware modules for special applications. These modules can also be retrofitted as required.

Your benefits:
Field or panel-mounted housing
Universal application
Simple handling
    - Logically arranged menu structure
    - Large two-line display
    - Ultrasimple two-point calibration
Safe operation
    - Overvoltage (lightning) protection
    - Direct access for manual contact control
    - Calibration plausibility check
    - User-defined alarm configuration
The basic unit can be extended with:
    Addtional 2 or 4 contacts for use as:
        - Limit contacts (also for temperature)
        - P(ID) controller
        - Timer for simple rinse processes
        - Complete cleaning with Chemoclean
        - Current input
Plus package:
    - User defined current output characteristics
    - Automatic cleaning trigger on alarm or limit violation
    - Sensor Check System for pH glass and reference
    - Live check of sensor
    - Special neutralisation controller
HART® or PROFIBUS-PA/-DP
2nd current output for temperature, pH/ORP or continuous controller

Field of application
    Effluent treatment
    Neutralisation
    Detoxication (electroplating)
    Water treatment
    Water monitoring