DM-102-NH₃ Ammonia Sensor
Manufacturer: Teledyne| Detcon
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DM-102-NH₃ Ammonia Sensor
Manufacturer: Teledyne| DetconDetcon Model DM-102-NH₃ is a gas detection sensor designed to detect and monitor ammonia in air over the range of 0-100 ppm 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 milliamp signal proportional to the gas concentration.
Model DM-100 Series sensors feature intelligent electronics, non-intrusive operator interface and comprehensive fault diagnostics.
The sensor is packaged in an electro-polished 316 stainless steel housing fitted with a ¾" NPT thread.
The plug-in, field replaceable sensor cell features large surface area gold-plated pins that reduce the effects of corrosion in harsh industrial environments.
Signal conditioning electronics are completely encapsulated in the sensor housing adding a high level of durability to the design.
The packaging is XP-intrinsically safe. This innovative design marks a return to a simple, more affordable, and durable gas detection sensor without compromising quality.
Specifications
Manufacturer
Accuracy
- ± 2 % of Full Scale
Ambient Temperature Range
- -40° to 50° C (-40° to 122° F)
Approvals & Certifications
- ATEX - Class I, Div. 1, Grade A, B, C, D (Tamb: -40° to 50° C), II 1 G Ex ia II C T4 (with IS Barrier Installed)
- 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
- Power/Analog, Max.
- Serial Output, Max.
Circuit Protection
- EMI/RFI Protected
- Miswiring
- Over-Voltage
Communication
- Baud Rate: 9,600 bit/sec (9,600, N, 8, 1 Half-Duplex)
- RS-485 Modbus Communication Protocol
Consumption
- Maximum
- Normal Operation: 4 mA (0.1 W at 24 Vdc)
Display
- 4-Digit LED Loop Powered 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)
- Junction Box
Enclosure, Body Material
- 316 Stainless Steel
- Aluminum
Environmental Protection
- Electrical Classification: Explosion-proof
- IP66
- NEMA 4X Weatherproof
- NEMA 7 Explosion-proof
Humidity
- 15 to 90 % Relative Humidity, Non-Condensing (Continuous)
- 5 to 100 % Relative Humidity (Intermittent)
Input Power
- 10-28 Vdc
Loop Resistance
- 750 ohms, Max.
Measuring Range
- 0 to 100 ppm
Mounting
- 5.5” (140 mm) Mounting Holes Center to Center
NPT Connection
- 3/4” NPT Male
Operating Pressure
- Atmospheric ± 10 %
Operating Temperature
- -40° to 50° C (-40° to 122° F)
Output
- 1.2 mA - without Display
- 22 mA - Over-Range Condition
- 24 Vdc
- 3 mA - with Display
- 4-20 mA
Repeatability
- ± 2 % of Full Scale
Response Time
- T90 < 90 seconds
RFI/EMI Protection
- Complies with EN 61362
Sensor, Probe Connection
- 2-Wire
Sensor, Probe Type
- Continuous Diffusion / Absorption
- Electrochemical
- Plug-In Field Replaceable Typical
Span Effect
- Span Drift: < 2 % Signal Loss Per Month
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
