Digital Control Systems' AirSense M307 carbon dioxide monitor sets a new standard of affordability and user-friendly installation and operation. The AirSense™ M307 is DCS's most affordable model yet. A unique metal-chromated CO2 sensor housing allows the AirSense Model 307 to perform flawlessly in the most demanding HVAC environment, and the M307's ease of installation and classic finish design are specifically geared to the cost-conscious HVAC contractor's needs.
Technicians in the field can now easily calibrate the AirSense™ M307 CO2 Monitor simply by removing the port cap, plugging in the 2000ppm cal gas, and pressing a single button: a green LED indicates that the patent-pending one-step calibration is complete.
The AirSense™ M307 CO2 Meter can be installed on a standard electrical junction box in new construction projects or it can be directly wall mounted. Installation is now easier than ever! The M307 CO2 Monitor can be installed with just two screws and none of the sensitive electronics are exposed during installation, eliminating costly accidents. Another unique feature of the AirSense M307 is that it is designed so components won't be harmed if the unit is accidentally wired incorrectly.
Single Touch Smart Calibration
The AirSense™ Model 307's automated single gas verification makes field calibration a snap, and its superior design means significantly longer intervals between calibration. Technicians in the field can now easily calibrate the M307 CO2 monitor simply by removing the port cap, plugging in the 2000 ppm cal gas (available from factory), and pressing the calibration button (illustrated on front). An easy to read green LED will blink once the process is complete.
Easy to install and support Measurement output is via a 0 to 10 volt interface. An optional 4-20mA current loop feature is also available (see table). The new mounting design, easy calibration, and cost savings you can achieve with the M307 make for an easy decision. Breathe Easier with AirSense™ CO2 Monitors.
Specifications for the AirSense™ M307 CO2 Monitor
Operating Principle
Non-dispersive infrared (NDIR)
Gas sampling method
Diffusion Only
Measurement Range
0 - 2000 ppm CO2
Meaurement accuracy
± 5% of reading or ± 75 ppm, whichever is greater
Repeatability
± 20 ppm
Recommended calibration interval
5 Years
Warm up time
Less than 1 minute
Operating temperature range
0 to 50 ° Celsius
Operating humidity range
5 - 95% RH, (non condensing)
Storage temperature
-30 to + 60 ° C
Power requirements
18 - 28 VRMS AC, 18 - 30 VDC
Power consumption
Less than 1 watt
Calibration Procedure
Single Button
Case dimensions
4.5" x 2.8" x .9"
Voltage output (linear)
0 - 10 VDC full scale standard.
Range field adjustable from 1-10 VDC
Current output (linear)
4 - 20 mA (RLOOP: 400 W maximum)
Warm up time
Less than 1 minute
Operating life expectancy
10 years typical
Warranty
One year, parts and labor through repair or exchange
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