Product Overview

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[e-mail]
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www.veris.com
The CW2 Protocol Series of air quality sensors for living space is a
exible multi-sensor platform for use with BAS controllers designed
to accept BACnet or Modbus outputs. CW2 Protocol Series sensors
are available with three user interface options: touchscreen, LCD
with three buttons and blank. CO
2
and temperature sensors are in-
cluded with all CW2 Protocol Series air quality sensors. Models with
VOC sensors and relative humidity sensors are also available.
OPERATING ENVIRONMENT
Input Power Class 2; 20 to 30 Vdc, 24 Vac, 50 to 60 Hz
Protocol Output BACnet or Modbus via RS-485, selectable
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)
CO
2
TRANSMITTER
Sensor Type Non-dispersive infrared (NDIR), diffusion sampling
Output Range
0 to 2000/5000 ppm (selectable)
Accuracy ±30 ppm ±3% of measured value
Repeatability
±20 ppm ±1% of measured value
Response Time
<60 seconds for 90% step change
VOC TRANSMITTER OPTION
Sensor Type
Solid state
Output Range
0 to 100% AQI for VOC
Accuracy
±15% of measured value
Output Scale
0 to 1,000 ppb of total VOC (TVOC)
LEVEL
VENTILATION
RECOMMENDATION
TVOC (ppb)
AQI Table*
>61% Greatly increased >610
20 to 61% Signicantly increased 200 to 610
10 to 20% Slightly increased 100 to 200
5 to 10% Average 50 to 100
0 to 5% Target value 0 to 50
CW2 PROTOCOL SERIES
Individual or 4-in-1 CO
2
, VOC, RH & Temperature
Air Quality / Gas Detection | Protocol Air Quality Sensors
APPLICATIONS
• Controlling ventilation in
response to accuracy
• ASHRAE 62.1 compliant
• Office buildings, conference
rooms, schools, retail stores,
etc.
Communicating
Embedded BACnet and Modbus
communication protocols…easy
systems integration
Configurable
baud rates
Configurable to multiple baud
rates…transfer data at the right
speed for the system
Self-calibrating
Innovative self-calibration
algorithm…easy to maintain
Easy to install
Large wiring terminals on
baseplate and snap-on covers
with security screw simplify
installation and service
Dual-beam NDIR
CO
2
sensor
Dual-beam, non-dispersive
infrared technology (NDIR)
repeatable to ±20 ppm ±1% of
measured value…high accuracy
measurement
Multi-sensor
platform
CO
2
, VOC, RH and temp in one
device…lower installation and
service costs
SPECIFICATIONS
HQ0007677.C 0920
CW2Txxxx CW2Lxxxx CW2Xxxxx
RH TRANSMITTER OPTION
HS Sensor
Thin-lm capacitive, replaceable
Accuracy
±2% from 10 to 80% RH @ 25°C (77 °F)
Hysteresis
1.5% typical
Stability
±1% @ 20°C (68 °F) annually for 2 years
Output Range
0 to 100% RH
Temperature
Coefficient
±0.1% RH/°C above or below 25 °C
(77 °F) typical
TEMPERATURE TRANSMITTER
Sensor Type
Solid state, integrated circuit
Accuracy
±0.2 °C (±0.4 °F) typical
Resolution
0.1 °C (0.1 °F)
Range
0 to 50 °C (32 to 122 °F)
DISPLAY MODELS
Touchscreen
61 mm (2.4 in), color, backlit, capacitive, 240x300 px
Setpoint: Temperature, humidity or fan speed selectable
Timeout override: Display timeout
Lockout override: Touchscreen/button lockout
LCD
52mm (2.05 in), segmented with 3 buttons
Setpoint: Temperature, humidity or fan speed selectable
Timeout override: Display timeout
Lockout override: Touchscreen/button lockout
SETPOINTS
Temperature
Setpoint
Scale: 10 to 35 °C (50 to 95 °F) /
0 to 50 °C (32 to 122 °F)
Humidity
Setpoint
Scale: 0 to 100% RH
Fan Speed
Setpoint
Off, Low, Medium, High