Toxic gas unit supports sensor field replacement

The TS4000 toxic gas monitoring system from General Monitors is said to combine a microprocessor-based design with reliable and rugged electrochemical sensors in an explosion-proof housing.

The TS4000 toxic gas monitoring system from General Monitors is said to combine a microprocessor-based design with reliable and rugged electrochemical sensors in an explosion-proof housing.

The intrinsically-safe design of the TS4000's interface module supports sensor field replacement without the need for special tools or hot work permits, said the company.

Toxic gas leaks at plants pose a danger in many industries, including chemical, oil and gas, electric utilities, food and beverage, pharmaceutical, pulp and paper and wastewater treatment.

Leak sources typically include pipelines, valves, tanks, burners, freezers, separators, flare systems, aeration ponds and other equipment.

The distributed layout of equipment within large facilities with complex processes often makes traditional point-monitoring gas detectors either ineffective or cost prohibitive, believes General Monitors.

The TS4000 monitors toxic gases in the parts per million (ppm) range.

It offers long distance remote mounting up to 2,000 feet, dual redundant MODBUS communications, 8 amp relays, a three-digit display, 4-20mA output, and indication of remaining sensor life.

The TS4000 also features one person calibration and can virtually self-calibrate by activating a magnetic switch and applying gas, claimed the company.

The monitor display gas concentrations up to 500ppm, fault codes for troubleshooting and provides complete status to the control room.

Up to 128 units can be linked via the dual-redundant Modbus output (247 with repeaters).

Additionally, the TS4000 iss aid to simplify operation and maintenance and reduces downtime by providing remaining sensor life indication.

When the TS4000 is integrated with the MC600 Multichannel Controller it offers versatility as a total toxic gas monitoring system.

Up to 127 controllers can be linked to monitor up to 762 points of toxic or combustible gas with the MC600.

The MC600 includes dual RS-485 serial communications and MODBUS compatibility.

The MC600 Multichannel Controller features six user configurable relays and up to three zones with selectable zoning and independent voting.

Its modular design, featuring plug-in signal cards along with removable terminal blocks, is claimed to simplify installation wiring and testing.

Individual large LCD channel displays, LED indicators and a keypad allow local status checks and system updates.

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