AirSense™ Model 301A

Model 301A Manual

TRANSFORMERS ARE AVAILABLE FOR EITHER 110 OR 220 VOLT OPERATION

Housed in a sleek ( 2.5 by 4.5 inches) case, our new generation Model 301A is the first choice for building ventilation system professionals. With an unprecedented 2 year warranty and only one gas required for calibration (rather than zero and a calibration gas mix) the 301A is the user-friendly CO2 monitor everyone wants.

The 301A is the cutting edge of infrared technology: excellent long-term drift performance is enhanced by a stable IR source, a state-of-the-art lithium tantalate detector, updated digital electronics and unique auto-zero function. This results in very stable calibration and longer trouble-free operation in the field. The new IR source is more rugged, operates at 10X derated power and has a life expectancy of at least 10 years. The lithium tantalate detector enhances stability, has less ambient temperature sensitivity, and faster response time.

Each unit is electronically isolated so that multiple units can be connected to the same controller without electrical interference.

The Model 301A is extremely versatile, with digital display, and 120VAC power supply option available. The unit has both voltage and 4-20mA outputs. Its new smaller size with power consumption as low as 60mA and 0.8W make it ideal for battery-operated portable applications.

Manuals

Model 301A Manual 2000ppm

M301A 5000 ppm (spline)

Specification
Operating Principal	Non-dispersive Infrared (NDIR)
Gas Sampling Method	Diffusion
Measurement Range	0-2000 ppm CO2 (optional up to 0-5000 available)
Maximum Annual Drift	+/- 75 ppm
Accuracy	+/- 5% of reading or 75 ppm: whichever is greater
Repeatability	+/- 20 ppm
Minimum Calibration Interval	Two years
Response Time	Less than one minute
Operating Temperature Range	10-50°C
Power Requirements	18-30VDC or 20-30V RMS AC
Power Consumption	Less then 1W
Calibration Adjustments	Span only (offset electronically nulled)
Case Dimensions	4.9" x 2.6" x 1.6"
Enclosure Material	High impact plastic
Voltage Output (linear)	0-10VDC standard (other ranges available)
Optional Digital Display	4 Digit, .3" 7-segment LED (available in red or green)
Operating Life Expectancy	10 Years minimum
Warranty	2 years, parts and labor through repair or exchange

Indoor Air Quality:
A guide for building owners and facility managers. Provides information about diagnosing indoor air quality problems. "Provides information about diagnosing indoor air quality problems."

IAQ for Schools:
Download a complete, practical plan to improve the air quality in schools.

Improve IAQ, While Saving Energy.
The use of CO2 sensors can save more than $1 per square foot of energy cost annually.