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D12Ex-IR Infrared Gas Transmitter
Brand: Analytical Technology IncThe D12Ex-IR is a versatile infrared system used primarily for the detection of combustible levels of methane or other hydrocarbons. It may also be used for monitoring CO2 levels, either in ppm or percent levels.
D12Ex-IR transmitters provide analog signals for remote interface and optional relays for local alarming functions.
Two digital communication options, Modbus™ and Hart™, are also available.
Certified for use in explosion hazard areas, the unit provides rapid and reliable detection of hazardous conditions so that protective measures can be activated.
The D12Ex-IR is also available with an infrared sensor designed for CO2 measurements in ambient air or in pumped gas samples.
Two carbon dioxide sensors may be specified, one for low range use and another for higher levels of CO2.
The low range sensor may be scaled from 0-1000 PPM minimum to 0-5% maximum, while the high range sensor covers ranges from 0-10% minimum to 0-50% maximum.
Features- Backlit LCD Display
- Internal Data Logger
- Non-Intrusive operating functions such as calibration, alarm setup, alarm reset, data view, and setup
- Options are all available using a magnetic tool.
- No need to open the enclosure when making adjustments.
- Password Protection
- Modular Electronics
- Explosion Proof Enclosure
- Scalable 4-20 mA: The output range for a particular sensor is programmable within the range boundaries set in that sensor.
- Three Internal Alarm Relays
- Analog Output Simulation
- Relay Output Simulation
- Serial Communication Interface
Specifications
Gas Type
- Methane: 0-50/100 % LEL (also 0-100 % V/V CH4)
- Carbon Dioxide:0-1000 PPPM/5 % or 0-10/50 %
- High Hydrocarbons: 0-10/100 % V/V
Sensor Type
- Single Path Non-Dispersive Infrared (NDIR)
Sensor Separation
- Maximum 100’ Cable from Remote Sensor to Transmitter
Response Time
- T50 = 10 seconds
- T90 = 20 seconds
Accuracy
- 2 % for Methane, Propane, CO₂, and Special Orders ± 6 % Range for HC Gases Using K-Factors
Repeatability
- ± 1 %
Zero Drift
- Less Than 1 % Full Scale Per Month, Non-Cumulative
Span Drift
- Dependent on Environment
- Typically Less Than 1 % Per Month
Analog Output
- 4-20 mA, 600 ohms Max. at 24 Vdc
Digital Output
- HART (1200 Baud Modem Interface)
- Modbus (1200-9600 - RS-232 or RS-485)
Power
- 12-30 Vdc, 250 mA Max., 3/4-Wire Connection
Optional Relays
- Three SPST, 5 A @ 230 Vac or 30 Vdc Resistive
Relay Coil
- Programmable Either Normally Energized or Normally De-Energized
Certifications
- Class 1, Div. 1, Groups B, C, & D, T6
- Class 1, Zone 1, AEx d IIB T6
- IEC Ex db IIC T6 Gb
- ATEX II 2 G Ex db IIC T6 Gb
- 2014/30/EU - EMC Directive
- 2014/35/EU - Low Voltage Directive
- 2014/34/EU - ATEX Directive
- 2011/65/EU - RoHS Directive
Temperature
- -20° to +60° C
Humidity
- 0-99 % Non-Condensing
Weight
- 7.2 lbs (2.3 kg)
- Chemical Processing
- Pulp & Paper
- R&D Labs
- Semiconductor Plants
- Refineries
- Pharmaceuticals
- Food Processing
- Aluminum Refining
- Breweries
- Metals Processing
- Water Treatment
- Wastewater Treatment
- Electric Utilities
- Agricultural Chemicals
- Plastics Manufacturing