Product description
OUM223/253 is a transmitter for turbidity and suspended solids mesurement. The modular design of the transmitter allows easy adaption 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 (OUM253) or panel-mounted housing
Universal application
    - One instrument for turbidity and suspended solids
    - Units: FNU (formazine standard), ppm, g/l, % or % SS
Simple handling
    - Logically arranged menu structure
    - Ultrasimple calibration with user samples and alarm signalling for calibration errors
Safe operation
    - Overvoltage (lightning) protection
    - Direct access for manual contact control
    - User-defined alarm configuration
    - Automatic sensor self-recognition with calibration data transfer
The basic unit can be extended with:
2 or 4 additional contacts for use as:
    - Limit contacts (also for temperature)
    - P(ID) controller
    - Timer for simple rinse processes
    - Complete cleaning with Chemoclean
Plus package:
    - Any current output configuration via table
    - Automatic cleaning start
    - Display in customer units (e.g. density) via table assignment
    - Live check of sensor
HART® or PROFIBUS PA / DP
2nd current output for temperature, main measured value or actuating variable
Current input for flow rate monitoring with controller shut off or for feedforward control

Field of application
Sewage treatment plants, suspended solids measurement
Wastewater treatment
Water treatment and drinking water monitoring
Surface water: rivers, lakes, ocean
Service water