Creative Gas Detection Solutions

EX-5155-MOS Toxic Hydrocarbons & Organic Solvents Sensor

EX-5155-MOS Toxic Hydrocarbons & Organic Solvents Sensor

Home » Products » Remote Gas Monitoring – Sensor Transmitters » EX-5155-MOS Toxic Hydrocarbons & Organic Solvents Sensor

EX-5155-MOS Toxic Hydrocarbons & Organic Solvents Sensor

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.

  • 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

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

Installation: 3-wire

Connection: 1/2 inch NPT, conduit.

Weight: 5.5 lbs (2.5 Kg)

Approved for Class I, Div. 1, Groups B,C, & D

Classified to:
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

Gas/Vapor                              Range    

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.

  • Acetonitrile (CH3CN)
  • Ammonia (NH3)
  • Benzene (C6H6)
  • 1-3 Butadiene (C4H6)
  • 2-Butanone (MEK) (C4H80)
  • Cyclohexanol (CH2)5CHOH
  • Cyclohexanone
  • (CH2)5CO
  • Dimethylformamide (C3H7NO)
  • Ethyl alcohol (C2H5OH)
  • Ethyl Methacrylate (C5H8O2)
  • Ethylene (C2H4)
  • Gasoline
  • Hexane (C6H14)
  • Hydrocarbons
  • Hydrogen (H2)
  • Hydrogen sulfide (H2S)
  • Isopropanol (CH3) CHOH
  • Isopropyl alcohol (IPA) (C3H8O)
  • Methanol (CH3OH)
  • Methyl alcohol (CH3OH)
  • Methyl chloride (CH3Cl)
  • Methyl ethyl ketone (MEK) (C4H8O)
  • Methylene chloride (CH2Cl2)
  • Organic solvents
  • Solvents
  • Styrene (C8H8)
  • Toluene (C7H8)
  • Trichloroethylene (C2HCl3)
  • Volatile Organic Compounds (VOCs)
  • Xylene (C8H10)

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

To place an order, please contact our experienced and professional customer service team:

PHONE: 734-761-1270

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

Sign up for our newsletter?

Stay up to date with our happenings, developments and new products!

Leave details