ENMET CD-1300-ST - Manual (Page 4)

CO
2
Sensor / Transmitter ENMET Corporation
2
2.0 Features
2.1 Display and Indicators
The basic CD-1300-ST Series has a single green LED on the front panel which illuminates whenever the unit is operating.
This LED is on steadily when the measured concentration is below the high CO
2
limit, and blinks whenever the concentration is
above the limit.
The standard factory high limit is 1000 ppm, but can be easily adjusted in the field. The procedure for adjusting the high CO
2
limit is described in Section 5.2.
The display option adds a 4 digit liquid crystal display (LCD) to the front panel. The display shows the measured CO
2
concentration in parts per million (ppm). 1000 parts per million equals 0.1%.
2.2 Specifications
Operating principle
Non-dispersive infrared (NDIR)
Gas sampling method
Diffusion or sample draw
Measurement range
0 – 2000 ppm CO
2
, Optional 0 – 5000 ppm
Typical drift (per year)
±75 ppm (@ 1200ppm)
Accuracy
±5% of reading or ±75 ppm, whichever is greater
Repeatability
±20 ppm
Recommended Calibration Interval
One Year
Response time
Less than 1 minute
Operating temperature range
0 to 50 ° C
Operating humidity range
0 - 90% RH (non condensing)
Storage temperature
-30 to + 60 ° C
Power requirements
20 – 28 V RMS AC, 18 - 30 V DC
Power consumption
Less than 2W @ 24 V AC
Calibration adjustments
Span only (offset electronically nulled)
Calibration verification time
10 minutes typical
Dimensions
5.2" x 3.2" x 1.4"
Voltage output (linear)
0 – 10 volts DC standard
Current output (linear)
4 - 20 mA (R
L
≤ 500Ω)
Warm-up time
3 minutes
Weight
6.5 Oz. (0.35 Kg)
Optional Digital Display
4 digit, .35" LCD
Optional
High Limit
Contact
setpoint range
0 to full scale
contact polarity
jumper selectable
contact rating
2A @ 24 V AC
Operating life expectancy
10 years typical
Warranty
12 months, parts and labor through repair or exchange
N OTE : All specifications stated in this manual may change without notice.