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DM-101-H₂ Hydrogen Sensor

Brand: Detcon Inc

Detcon Model DM-101-H2 is a gas detection sensor designed to detect and monitor Hydrogen in air over the range of 0 to 100% LEL using electrochemical sensor technology. 

Method of detection is by diffusion adsorption. Air and gas molecules diffuse through a porous membrane contacting an electrolyte solution which creates a change in electrical conductance between a reference and measure electrode. 

This change in conductance is conditioned by internal electronic circuitry to provide a linear 4-20 mA signal proportional to the gas concentration.

1 - 5 of 5 Part Numbers
961-050021-04P
961-050021-04P
  • Junction Box - Aluminum
961-050022-04P
961-050022-04P
  • Junction Box - Aluminum & Loop Powered Display
961-050023-04P
961-050023-04P
  • Junction Box - 316 Stainless Steel
961-050024-04P
961-050024-04P
  • Junction Box - 316 Stainless Steel & Loop Powered Display
961-050025-04P
961-050025-04P
  • Junction Box - No Junction Box
1 - 5 of 5 Part Numbers

Specifications

Brand

Accuracy

  • ± 2 % of Full Scale

Ambient Temperature Range

  • -40° to 50° C (-40° to 122° F)

Approvals & Certifications

  • ATEX - II 1 G Ex ia II C T4 (Tamb: -40° to 75° C) & II 2 G Ex d [ib] Ib IIC T4
  • cCSAus
  • CE
  • CSA - Class I, Div. 1, Grade A, B, C, D (Tamb: -40° to 50° C) Class I, Zone 1, Group IIC
  • ISO 9001: 2008
  • NRTL - Class I, Div. 1, Grade A, B, C, D (Tamb: -40° to 75° C), Class I, Zone 1, Group IIC
  • UL

Cable Length

  • Maximum

Circuit Protection

  • Miswiring
  • Over-Voltage

Communication

  • HART
  • Modbus RTU
  • RS-485
  • Wireless

Consumption

  • 20 mA - Max.
  • 4 mA (0.1 W at 24 Vdc) - Normal Operation

Display

  • 4-Digit LED Display with Gas Concentration & Fault

Electrical - Free Leads

  • Four 18 Gauge, 5.5” (14 cm) Long Wire Leads

Electrical Connectors

  • 14 AWG (2.5 mm²)
  • 2-Wire Twisted-Pair Shielded Cable
  • Junction Box

Enclosure, Body Material

  • 316 Stainless Steel
  • Aluminum

Environmental Protection

  • IP66
  • NEMA 4X
  • NEMA 7
  • Weatherproof

Humidity

  • 5 to 100 % Relative Humidity (Intermittent)
  • 5 to 95 % Relative Humidity, Non-Condensing (Continuous)

Input Power

  • 10-28 Vdc

Measuring Range

  • 0 to 100 % Lower Explosive Limit (LEL)

Mounting

  • 5.5” (140 mm) Mounting Holes Center to Center

NPT Connection

  • 3/4” NPT Male

Operating Pressure

  • Atmospheric ± 10 %

Operating Temperature

  • -40° to 40° C (-40° to 104° F)

Output

  • 1.2 mA - All Fault Diagnostics (without Display)
  • 22 mA - Over-Range Condition
  • 3 mA - All Fault Diagnostics (with Display)
  • 4-20 mA - 0 to 100 % of Full Scale
  • Linear 4-20 mA DC (750 ohms, Max.

Repeatability

  • ± 2 % of Full Scale

Response Time

  • < 60 seconds for T90

RFI/EMI Protection

  • Complies with EN 61362

Sensor, Probe Connection

  • 2-Wire

Sensor, Probe Type

  • 3-Electrode Electrochemical Cell
  • Continuous Diffusion / Absorption
  • Plug-In Field Replaceable Typical

Span Effect

  • < 2 % Signal Loss Per Month - Span Drift

Storage Temperature

  • -35° to 55° C (-31° to 131° F)

  • Chemical Plants
  • Food & Beverage
  • Oil & Gas Applications
  • Pulp & Paper
  • Refineries
  • Steel Mills
  • Utilities
  • Wastewater Treatment Plants

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