
Z207933-
0A
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Other companies’ trademarks are hereby acknowledged to belong to their respective owners.
NOTICE
• This product is not intended for life or safety applications.
• Do not install this product in hazardous or classied locations.
•
Read and understand the instructions before installing this product.
• Turn o all power supplying equipment before working on it.
• The installer is responsible for conformance to all applicable codes.
If this product is used in a manner not specied by the manufacturer, the protection
provided by the product may be impaired. No responsibility is assumed by the
manufacturer for any consequences arising out of the use of this material.
Installation Guide
Air Quality
Product Identication
Product Overview
The CWE2 Series of air quality sensors for living space are for use with BAS controllers designed to accept
4 to 20mA, 0 to 5 Vdc or 0 to 10 Vdc outputs. These sensors measure CO levels using a dual-beam, non-dispersive
infrared (NDIR) technology.
The CWE2 Series Economy sensor has an accuracy of ±30 ppm ±3% of measured value, features 2-wire 4 to 20mA
and 3-wire voltage outputs, and is available with optional temperature output.
CWE2 Series
Economy Wall Mounted Air Quality Sensors
Specications
OPERATING ENVIRONMENT
Input Power Class 2; 20 to 30 Vdc, 24 Vac, 50 to 60 Hz
Max. Current 20 mA
Analog Output Selectable 4 to 20 mA, 0 to 5 V, 0 to 10 V
Operating Temp. Range 0 to 50 °C (32 to 122 °F)
Operating Humidity Range 0 to 95% RH non-condensing
Housing Material High-impact ABS plastic
Terminal Block Torque 0.5 to 0.6 N-m (0.37 to 0.44 in-lbf)
CO2TRANSMITTER
Sensor Type Dual-beam, non-dispersive infrared (NDIR), diusion sampling
Output Range 0 to 2000 ppm
Accuracy ±30 ppm ±3% of measured value
Repeatability ±20 ppm ±1% of measured value
Startup Time ≤20 seconds
Response Time ≤ 75 seconds for 90 degree step change
Max. Load Resistance* 100 at 20 Vdc
250 at 24 Vdc
500 at 30 Vdc
WIRING TERMINALS
Terminal Blocks Screw terminals, 18-24 AWG
Screw Terminal Torque 0.2 N-m (2.0 in-lbF) max.
CWE2
CWE2
User Interface
Blank
C
D
H
K
M
N
= None
= 1000 PT RTD
= 10K T2 thermistor
= 10K T3 thermistor
= 10K curve G/11K shunt
= 20K NTC thermistor
= 1.8K TAC thermistor