Dissolved oxygen measurement: Liquisys M COM253

Liquisys M COM223/253 is a dissolved oxygen measurement transmitter available as panel (COM223) or field housing (COM253). 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. Benefits: Field or panel-mounted housing Universal application for analogue and digital sensors Simple handling - Logically arranged menu structure - Simple single-point calibration in air, air-saturated water or in the medium is possible Safe operation - Excellent interference immunity - Direct access for manual contact control - User-defined alarm configuration 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: - User-defined current output characteristics - Automatic cleaning trigger on alarm or limit violation - Process monitoring - Sensor live check 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

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