ACI-Automation Components A/CO2 SERIES Data Sheet

Automation Components, Inc.

GAS

A/CO2 SERIES

A/CO2-R2

A/CO2-DUCT

A/CO2 SERIES

ACI Carbon Dioxide Sensor

The A/CO2 room and duct transmitters monitor the carbon dioxide (CO2) levels in industrial, school, and
office-type environments. The concentration of CO2 is a strong indication of the overall indoor air quality.
The A/CO2 Series is based on a single beam, non-dispersive infrared technology and is a cost-efficient
solution for measuring CO2 levels for building climate control. In addition, ABC software eliminates the
need for manual calibration. Carbon Dioxide concentration is measured up to 2,000 ppm and is converted
into proportional analog outputs. The factory default output is 4-20 mA, whereas 0-5 VDC and 0-10 VDC
outputs are able to be field selected via integral dip switches. Thermistor temperature outputs, along with
setpoint and override, are available as options for room configurations. The A/CO2 Series provides data
which can be used in conjunction with a Building Automation System or Demand Control Ventilation to
decrease energy consumption while creating a healthier indoor climate.

Automation Components, Inc.

89

GAS

/

A

CO2 SERIES

Automation Components, Inc.

SPECIFICATIONS

Supply Voltage
Power Consumption
Sensing Technology/Sensing Method
Measurement Range Default
CO2 Output Signal
Fail Safe
CO2 Accuracy
Pressure Dependence
Response Time
Warm Up Time
Temperature Output
Temperature Accuracy
Operating Temperature/Relative Humidity Range
Sensor Coverage Area
Life Expectancy
Product Dimesions (Room Mount)
Product Dimesions (Duct Mount)

24 VAC +/-20%, 50/60 Hz (half-wave rectifier); 16.5-40 VDC Max.
3VA for 24VAC, 3W for 24VDC (peak); <0.9W (average)
Single beam infrared sensing technology (NDIR); Diffusion
0 to 2,000 ppm
Out 1: 0-5 VDC or 0-10 VDC (Default) | Out 2: 4-20 mA (500 Ohm Load Max.)
Polarity protected
+/- 40 ppm +/- 3% of reading (@ 15-35°C; 20-70% RH and 101.3 kPa)
+ 1.6% reading per kPa (deviation from standard pressure 101.3 kPa)

≤ 2 minutes, diffusion

< 1 minute (@ full specs < 15 minutes)
Various (see order grid)
+/- 1°F (+/- 0.6°C)
32 to 122
7,500 sq. ft. maximum
> 15 years (typical)
(H) 4.5” (W) 2.75” (D) 1.12”
(H) 5.98” (W) 3.33” (D) 1.85”

o

F (0 to 50oC)/0 to 95%, non-condensing

ORDERING

Select one Configuration (A). If a Room Configuration is selected, please follow direction to choose either (B), (C), (D) or (E). Pot Value & Setpoint
Offset are only applicable when a setpoint is specified and the values listed represent ohms. If a Duct configuration is selected, your part number
is complete. Duct models are not available in conjunction with Thermistors. NOTE:
not be displayed in your final part number.

Selections (C) through (E) are for internal references and will

Configuration Pot Value Setpoint Offset

R2 (Room) (Only Complete B)

(Room, Setpoint) (Complete B, C, D & E)

R2S

(Room, Override) (Only Complete B)

R2O

(Room, Setpt & Override) (Complete B, C, D & E)

R2SO

(Duct) (Part Number is finished)

DUCT

(Duct with Conduit) (Part Number is finished)

DUCT-C

Thermistor

---- (None)
(Type II)

CP

(Type III)

AN
20K
3K

1.8K

10K-E
100KS
CSI (Dale)

None
400
1K
2K
5K

8.5K
10K
20K
100K

None
0 (Default)

51.1
499
806
910
1K

2K

4.99K

6.19K

7.32K

8.25K
10K
20K

Pot Action

None
DA (Direct)

(Reverse)

RA

BUILD PART NUMBER

After completing (A), (B), (C), (D) & (E) from the above table, fill in the Part Number Table below. The “Sensor Series” is a factory default.

A/CO2

SENSOR SERIES

EXAMPLE: A/CO2-R2SO-CP-100K-0-DA

90