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Products » Legacy Products » GIR912 NOVA-Sensor Elite™ Carbon Dioxide Gas Detector

GIR912 NOVA-Sensor Elite™ Carbon Dioxide Gas Detector

Product Literature

Where to Buy
+1 (949) 583-1857

The Model GIR912 has been replaced by Model GIR914.

Features and Benefits

  • Uses Infrared detection principle to accurately measure life-threatening Carbon Dioxide gas
  • Shipped fully assembled and precalibrated. Installed and fully operational in less than 1 hour
  • 4-20 mA output for connection to external equipment
  • Two alarm set points with voltage-free contact outputs for local control
  • Pushbutton switch initiates test or calibration verificaion (no magnet required)
  • On-screen test instructions insure errorfree results
  • No moving parts or mirrors used
  • Accurately detects gas in locations with no Oxygen present
  • Maintains calibration even after exposure to high gas concentrations or continuous background of gas

Product Summary

GIR912 NOVA-Sensor Elite™ Carbon Dioxide Gas Detector Use the NOVA-Sensor Carbon Dioxide Gas Detector to alert personnel when lifethreatening CO2 is present in a protected area. This detector uses the non-dispersive infrared (NDIR) principle to detect and monitor the presence of gas. The display screen on the NOVA-Sensor continuously displays operating status and the actual percentage of CO2.

THE SENSOR

Use the NOVA-Sensor Carbon Dioxide Gas Detector to alert personnel when lifethreatening CO2 is present in a protected area. This detector uses the non-dispersive infrared (NDIR) principle to detect and monitor the presence of gas. The display screen on the NOVA-Sensor continuously displays operating status and the actual percentage of CO2. This reading is converted to a standard 4-20 mA signal, which may be connected to any remote device for remote display or logging. Relay contacts are provided which transfer when the gas concentration exceeds the LOW ALARM and HIGH ALARM set points. Typical set points are adjusted by the installer upon installation and may be reset later by authorized personnel. The relays are suitable for controlling local HVAC equipment, alarm signal devices or for equipment shutdown. Fault relay contacts are also available which operate upon loss of power or internal failure of the unit. The calibration verification or test sequence is initiated by depressing the pushbutton switch located on the side of the enclosure. During calibration/test, step-bystep instructions are displayed on the NOVA-Sensor screen. There are no screwdriver or other manual adjustments required, and the calibration can be performed even in the presence of combustible gases. The GIR912 is available in versions to operate in the ranges of 2% to 100% CO2 by volume.

Technical Specifications

Technical Specifications

Power Input: 24 volts DC nominal, 180 mA standby, 240 mA alarm Will operate within specifications at any supply voltage between 16 and 32 volts.
Measuring Range: 0-2%, 0-5%, 0-30% or 0-100% by volume Carbon Dioxide
Signal Output: 4 mA @ 0% CO2, 20 mA @ full scale CO2
Resolution: 2% of full scale
Operating Temperature: +14 to +122° F (-10 to +50° C)
Ingress Protection: IP40 to IP66 Depends on installed protection options
Signal Output: 0.16 mA per % LEL Automatically adjusted during calibration
Resolution: 2% LEL
Repeatability: Zero: ±0.1% of full scale Signal: ±0.05% of full scale
Warm-up Time: 10 seconds after power applied
T90 Response Time: Less than 30 seconds
Maintenance Interval: 6 months For verification of performance only
Relay Outputs: Low Alarm (latching or nonlatching) High Alarm (latching) Malfunction (non-latching)
Relay Contact Ratings: 6 amps @ 28 VDC or 300 VAC resistive 1/8 HP @ 120/240 VAC
Analog Output: 0 to 20 mA into a load of 600 ohms or less
Size: 7 x 12 inches, 5 inches deep (178 x 305 x 127 mm) Includes junction box and sensor. Conduit connection is ¾ inch NPT thread.
Weight: 6.75 pounds (3.06 kg)