EX-5100 Catalytic Combustible Gas Sensor
Description
EX-5100 is a remote gas monitoring sensor transmitter that incorporates a pellistor or catalytic bead sensor. This sensor consists of a matched pair of elements, one active and the other for compensation. The active bead is coated with a catalyst that, when in contact with a combustible hydrocarbon or solvent, causes the gas or vapor to “burn” or oxidize at concentrations below the Lower Explosive Limit (LEL). This oxidization process raises the temperature of the active bead and increases the resistance of the internal wire coil. The second bead does not have the catalytic coating and provides compensation for environmental conditions including temperature and humidity. When these elements are connected in a Wheatstone bridge type circuit, a useable signal is produced that is proportional to the gas concentration. The transmitter is 24 Vdc powered and provides a 4-20 mA output signal that can be connected to a controller, PLC or similar instrumentation. The standard EX-5100 calibration is 0- 100% LEL methane. Therefore, methane is considered to have a coefficient or relative response of (1.00) one. Calibration coefficients relative to methane have been generated for over 30 different combustible hydrocarbons and solvents. In addition to these established coefficients, ENMET can generate calibration data for most common combustible gases and vapors for which a sample can be readily obtained.
EX-5100 Catalytic Combustible Gas Sensor
Specifications |
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|---|---|
| Type Of Compound: | CO2 (Carbon Dioxide), CO (Carbon Monoxide) |
| Detection Technology: | Not Specified |
| Minimum Detectivity: | -- ppt (parts per trillion) |
Features
Catalytic sensor
Three alarm LEDs
24 VDC, 4-20 mA
NEMA 4X, NEMA 7 and IP66 rated enclosure
Poison resistant
Non-intrusive calibration
Approved for Class I, Division 1, Groups B, C & D
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Frequently Asked Questions
The EX-5100 Catalytic Combustible Gas Sensor is used for remote gas monitoring.
The sensor uses a pellistor or catalytic bead sensor. It consists of a matched pair of elements, one active and the other for compensation. The active bead is coated with a catalyst that causes the gas or vapor to oxidize at concentrations below the Lower Explosive Limit (LEL). This oxidization process raises the temperature of the active bead and increases the resistance of the internal wire coil.
The transmitter provides a 4-20 mA output signal that can be connected to a controller, PLC, or similar instrumentation.
Yes, the EX-5100 can be calibrated for over 30 different combustible hydrocarbons and solvents. ENMET can also generate calibration data for most common combustible gases and vapors for which a sample can be readily obtained.
Yes, the EX-5100 is approved for Class I, Division 1, Groups B, C & D and has a NEMA 4X, NEMA 7, and IP66 rated enclosure.