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DM-102-H₂ Hydrogen Sensor
Brand: Detcon IncDetcon Model DM-102-H2 is a gas detection sensor designed to detect and monitor hydrogen in air over the range of 0-1% by volume 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
961-070021-01P
- Junction Box - Aluminum
961-070022-01P
- Junction Box - Aluminum & Loop Powered Display
961-070023-01P
- Junction Box - 316 Stainless Steel
961-070024-01P
- Junction Box - 316 Stainless Steel & Loop Powered Display
961-070025-01P
- 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 2 G Ex d [ib] Ib IIC T4 (Tamb: -40° to 50° C) II 1 G Ex ia II C T4 (with IS Barrier Installed)
- 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 50° C) Class I, Zone 1, Group IIC
- UL
Cable Length
- 13,300 feet (4,054 metres)
- 4,000 feet (1,219 metres)
Circuit Protection
- EMI/RFI Immunity
- Miswiring
- Over-Voltage
Communication
- Baud Rate: 9,600 bit/sec (9,600, N, 8, 1 Half-Duplex)
- HART
- Modbus RTU
- RS-485
- Wireless
Consumption
- 20 mA - Max.
- 4 mA (0.1 Watts at 24 Vdc) - Normal Operation for Power Consumption
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 Shielded Cable
- 2-Wire Twisted-Pair Shielded Cable
- Junction Box
Enclosure, Body Material
- 316 Stainless Steel
- Aluminum
- Stainless Steel
Environmental Protection
- IP66
- NEMA 4X
- NEMA 7
- Weatherproof
Humidity
- 5 to 100 % Relative Humidity (Intermittent)
- 5 to 90 % Relative Humidity, Non-Condensing (Continuous)
Input Power
- 10-28 Vdc
Loop Resistance
- 750 ohms at 24 Vdc, Max.
Measuring Range
- 0 to 1 % by Volume
Mounting
- 5.5” (140 mm) Mounting Holes with J-box
NPT Connection
- 3/4” NPT Male Threaded with Locking Nut
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 - 0-100 % of Full Scale
- Linear 4-20 mA DC (750 ohms Max. Loop Load at 24 Vdc)
Repeatability
- ± 2 % of Full Scale
Response Time
- T90 < 60 seconds
RFI/EMI Protection
- Complies with EN 61362
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