VASTHI model Expo Field Detector with 4-20 mA output for continuous monitoring of gas concentration
GENERAL DESCRIPTION :
VASTHI model Expo Field Detector with 4-20 mA output for continuous monitoring of gas concentration . The standard system consists of compact electronic modules housed in Ex-Proof box grade IIA/IIB with a sensor integrally mounted with it.
Principle of operation : The sample gas diffuses in and reach the active part of the sensor which is detected by the sensor which in turn gives electrical signal output corresponding to the gas concentration and this electrical signal is amplified in the transmitter electronics circuitry to give 4-20 mA dc output for PLC/DCS.
The sensors are small, rugged, fast response and highly sensitive to the gas concentrations in the sample gas and also simple to calibrate and maintain.The gas sensor/transmitter with built in display is suitable for filed mounting in Hazardous area.
TECHNICAL SPECIFICATIONS
Make : VASTHI.
Model : Expo-98 FLT
Gas detection : LPG
Sensor : Catalytic Pellister
Principle : Diffusion type for Continuous monitoring
Range : 0 100 % LEL
Construction(Sensor) : SS Housing (is replaceable and mounted
inside the holder).
Input power supply : 24V DC from Endee Gas Monitor unit /
External source.
Input Signal : From gas sensor
Output : 4-20 mA dc
Area classification : Ex Proof to Group IIA/IIB
Accuracy : +/- 2 %
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