| Prism has a variety of transmitters for very large range of toxic gases for diverse applications.
All transmitters are housed in weather proof enclosures and use different sensing technologies – Electro-chemical, PID, Zirconia, Chemosorption etc. The Units are provided with suitable mounting brackets for wall or pipe mounting and the sensor always faces downwards. All these measure the gas concentration in the sensor surroundings and convert measured gas into 4-20mA electrical signal. The sensors are designed to respond selectively to the target gas but can respond to other interfering gases. Understanding of the composition of environment is essential to select sensor or to interpret results properly. Available variants are –
These can be used with any of PRISM Monitors and/or third party Receivers, PLC, DCS etc.
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| TGT 1000 – Toxic Gas Transmitter 2 wire |  |
| TGT 1000 is a series of direct use Sensor + Transmitter combination units housed in weather-proof (IP65) ABS enclosures.
Available for large number of gases – CO, H2S, SO2, NO2, NO, Cl2, HCN, HCL, O2, PH3, ETO, NH3. Available with HART output, digital display, two alarms & relay output variations. More…… |
| TGT 1550 – Toxic Gas Transmitter 3 wire |  |
| TGT 1550 is a series of direct use Sensor + Transmitter combination units housed in weather-proof (IP65) ABS enclosures. In addition to 4-20 mA output these transmitters provide special features like Serial Communication port, storage of Sr. No /Lot No., date of calibration, Digital filtering algorithm to remove noise.
Available for large number of gases – CO, H2S, NO2, O2, NH3. Available with RS485 Modbus output, digital display, three alarms & relay output variations. More…… |
| ZD 21 – Oxygen Gas Transmitter 3 wire |  |
| ZD 21 is a Zirconia Sensor based transmitter. Extremely stable sensor, long life – 5 years, fast response – < 2secs. is a direct use Sensor + Transmitter combination unit housed in weather-proof (IP65) rugged aluminium enclosure. It outputs 4-20 mA analog signal and operates over -25 to 50 degC. The external circuit of Receiver is connected to the transmitter via a screw terminal Connector.. More…… |
| CS 21 – Ammonia Gas Transmitter for Refrigeration Plants – 3 wire |  |
| CS 21 uses Chemosorpton based sensor. Long life of over 5 years, fast response – < 8 secs. is a direct use Sensor + Transmitter combination unit housed in weather-proof (IP54) rugged aluminium enclosure. It outputs 4-20 mA analog signal and operates over -30 to 55 degC. The external circuit of Receiver is connected to the transmitter via a screw terminal Connector.. More…… |
