Product Overview

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www.veris.com
The CWE2 and CWV2 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
2
lev-
els 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 volt-
age outputs, and is available with optional temperature output.
The CWV2 Value sensor with an accuracy of ±40 ppm ±5.5% of
measured value, is ideal for bid-spec applications.
OPERATING ENVIRONMENT
Input Power Class 2; 20 to 30 Vdc, 24 Vac, 50 to 60 Hz
Analog Output Selectable 4 to 20 mA, 0 to 5 V, 0 to 10 V
Operating Temperature 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)
CO
2
TRANSMITTER
Sensor Type
Dual-beam, non-dispersive infrared (NDIR),
diffusion sampling
Output Range
0 to 2000 ppm
Accuracy
CWE2: ±30 ppm ±3% of measured value
CWV2: ±40 ppm ±5.5% of measured value
Repeatability
CWE2: ±20 ppm ±1% of measured value
CWV2: ±30 ppm ±4.5% of measured value
Response Time
<60 seconds for 90% step change
WIRING TERMINALS
Terminal Blocks
Screw terminals, 18-24 AWG
Screw Terminal Torque 0.2 N-m (2.0 in-lbF) max.
WARRANTY
Limited Warranty
CWE2: 3 years
CWV2: 1 year
CWE2 & CWV2 SERIES
Economy and Value Wall Mount CO
2
Sensors
Air Quality / Gas Detection | Analog Air Quality Sensors
APPLICATIONS
• Controlling ventilation in
response to occupancy
• Office buildings, conference
rooms, schools, retail stores,
etc.
• Facilitating compliance with
ASHRAE 62.1 standard for air
quality
2-Wire 4-20 mA
Output
CWE2 models offer 2-wire current
outputs…lower installation costs
Economy Sensor
Competitively-priced sensors
ideal for bid-spec
Easy to install
Large wiring terminals on
baseplate and snap-on covers with
security screw simplify installation
and service
Self-calibrating
Innovative self-calibration
algorithm…easy to maintain
Field selectable
Field-selectable outputs for
operation flexibility
SPECIFICATIONS
HQ0007691.A 0420
COMPLIANCE INFORMATION
Agency Approvals
UL 916, European conformance CE:
EN61000-6-2
EN61000-6-3
EN61000 Series - industrial immunity
EN 61326-1
FCC Part 15 Class B, REACH, RoHS,
RCM (Australia), ICES-003 (Canada), EAC
(Russia)
*DIP switch selectable.