- Solid-state MOS sensor
- Three alarm LEDs
- 24 VDC, 4-20 mA
- NEMA 4X, NEMA 7 and IP66 rated enclosure
- Poison resistant
- Liquid crystal display
- Non-intrusive calibration
- Approved for Class I, Division 1, Groups B, C, & D
Remote Gas Monitoring Sensor Transmitter for Toxic Hydrocarbons & Organic Solvents
EX-5155 is a remote gas monitoring sensor transmitter that incorporates a solid state MOS sensor. An MOS sensor consists of a heated mixed metal oxide element that decreases in resistance in the presence of many gases and vapors. These sensors are broad range in their response characteristics. Different types of MOS sensors are available which can be optimized for a particular gas, but they are inherently nonspecific. The EX-5155 can provide ppm level monitoring capability for detecting certain common toxic gases, including ammonia (NH3) and hydrogen sulfide (H2S), in addition to a wide range of hydrocarbons and organic solvents. MOS sensors operate at lower temperatures than catalytic type sensors, which makes them less prone to poisoning. The MOS sensor is therefore the sensor of choice in applications where, for example, lead, phosphates or sulfur-containing compounds are present. Silicones, which are used in a wide range of oils, lubricants, adhesives, and many other products, can poison catalytic sensors and also influence the performance of MOS sensors under certain conditions. Applications for monitoring of hydrocarbon gases where silicones are present in the environment should be discussed with ENMET.
The EX-5155 sensor transmitter operates on 24 VDC power and features three LED alarm point indicators and 4-20 mA output. This sensor transmitter can be connected to various single and multi-channel ENMET controllers or computer-based instrumentation, such as PLCs, SCADAs, BMSs, etc.
Splash Guard for EX Series: 5120, 5155, 5165, 5175 & 5185 Sensor/Transmitters Replacement Magnet Calibration Gas, 34L alum. cylinder, 100 ppm Toluene, C7H8 Calibration Gas, 58L alum. cylinder, 300 ppm (200 ppm result) Ammonia, NH3 Regulator & Humidifier Assy. for 34L steel gas cylinder (for gases other than Toluene & Ammonia) Regulator & Humidifier Assy. for 34L alum. gas cylinder, Toluene (See 03386-100 below) Regulator & Humidifier Assy. for 58L aluminum gas cylinder, Ammonia, NH3 Sampling/Calibration Adapter for EX-5155 Sensor/Transmitters
Display: Backlit LCD
Alarm Indicators: 3 LEDs at programmable set points
Sensor Type: Metal oxide semiconductor (MOS)
Menu/Calibration: Magnet-actuated switches
Voltage: 24 VDC powered
Output: 4-20 mA
Connection: 1/2 inch NPT, conduit.
Weight: 5.5 lbs (2.5 Kg)
Approved for Class I, Div. 1, Groups B,C, & D
UL 916 ( 3rd ed.) and UL 1203 (4th ed.)
CSA 22.2, No. 0-M91, 30-M1986 and 142-M1987
Examples of Some Typical Calibrations
Acetone 2000 ppm
Ammonia 300 ppm
Methyl alcohol 400 ppm
Methyl chloride 200 ppm
Toluene 400 ppm
MEK 400 ppm
Styrene 100 ppm
Methylene chloride 200 ppm
Xylene 400 ppm
Isopropanol 100 ppm
In general, the EX-5155 can be calibrated for ppm concentrations of Hydrocarbons, Halogenated Hydrocarbons, Jet Fuels, Refrigerants, Organic Solvents, Esters, Ethers, Alcohols, Ketones, and other similar compounds and mixtures.
Calibration Equipment/Replacement Parts/Accessories for EX-5155:
Part No. Description
03700-034 Sampling/Calibration Adapter for EX-5155 Sensor/Transmitters
03700-008 Regulator & Humidifier Assembly for 34 liter steel gas cylinder (for gases other than Toluene & Ammonia). Also order Calibration Adapter P/N 03700-034
03700-009 Regulator & Humidifier Assembly for 34 liter aluminum gas cylinder, Toluene (P/N 03386-100 below). Also order Calibration Adapter P/N 03700-034
03386-100 Calibration Gas, 34 liter aluminum cylinder, 100 ppm Toluene, C7H8
03700-005 Regulator & Humidifier Assembly for 58 liter aluminum gas cylinder Ammonia, NH3 (see P/N 03230-300 below). Also order Calibration Adapter P/N 03700-034
03230-300 Calibration Gas, 58 liter aluminum cylinder, 300 ppm (200 ppm result) Ammonia, NH3
04546-004 Splash Guard for EX-5155
50030-001 Replacement Magnet
If you cannot find what you need or require a custom part, simply call and speak to one of our knowledgeable gas monitoring experts. They will be able to walk you through the ordering process quickly and professionally.
Description Part No.
EX-5155 Sensor/Transmitter supplied with magnet and instruction manual 10014-018