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Gas Monitor, Microprocessor Based
Gas Monitor, Microprocessor Based
Subtronics (India), manufacturer of electronic safety devices, offers a microprocessor based 3-status Gas Monitor for chlorine, hydrogen, LPG, carbon dioxide, EO ammonia, etc. This is a versatile microprocessor-based Controller unit with Three Set Points and three separate relays. The programming, calibration and operation of the instrument is done by a few simple keys and there are two independent displays for set point and process variable set point display is kept 0.3 to differentiate from process variable display. Status of Control/Alarm/Display relays and presently displayed setpoints is displayed by 3 mm red LEDs. The operation of the instrument is menu driven with user understandable prompts. The provision for external data lockout keys is kept for protecting programmed data. Three setpoints with individual hysteresis are provided with separate relays. The setpoints can be programmed as control or alarm type, relay on below or above setpoint and as deviation from main setpoint. All configurations can be done online without opening the unit controller. The unit can be operated on 240 V AC or 110 V AC with 4-20 mA output facility calibration zero and span adjusted by digital calibration through front panel keys, no trimpots. The self-calibrating equipment is connected to the CMR and DGFAS and L I flame proof and weatherproof gas detectors approved by the Ministry of Labour (Govt of India) are essentially to be used in the plants for long life span. The unit can be calibrated in installed condition itself by front panel keys at any given point, i.e., user need not feed a fixed signal. The four keys are Set, Enter, Increase and Decrease. There are few modes of operation: Rum mode, Verify mode, Program and Configuration mode. The front of the controller unit is sealed membrane type to withstand dusty environment.
