Veris Industries CDE SERIES, CWE SERIES Data Sheet
Air Quality / Gas Detection | Standard Duct and Wall CO2 Sensors
CDE & CWE SERIES
Field-selectable 4 to 20 mA / 0 to 10 Vdc Output
CWE
CDE
Microprocessor
based
Microprocessor-based design
increases accuracy and reduces
installation time
NDIR
Non-dispersive infrared
technology (NDIR) repeatable to
±20 ppm ±1% of measured value...
high accuracy measurements
Sensitivity
Low ambient sensitivity
4 to 20 mA/
0 to 10 Vdc
4 to 20 mA/0 to 10 Vdc output for
flexible control system interface
Self-calibrating
Innovative self-calibration
algorithm...easy to maintain.
5-year calibration interval
(recommended)
The CDE and CWE are non-dispersive infrared (NDIR) sensors designed
for measuring environmental CO
and indoor living spaces. Their measurement range of 0 to 2000 ppm
makes them compliant with ASHRAE and other standards for ventilation
control
The CWE/CDE Series provides a user-selectable 4 to 20 mA or 0 to 10
Vdc output for versatility. Microprocessor-based digital electronics and
a unique self-calibration algorithm improves long-term stability and
accuracy.
concentration in ventilation systems
2
SPECIFICATIONS
Input Power
Analog Output
Operating Temp. Range 0 to 50 °C (32 to 122 °F)
Operating Humidity
Range
Housing Material High impact ABS plastic
Terminal Block Torque:
CDE
CWE
Terminal Block Wire Size:
CDE
CWE
Sensor Type Non-dispersive infrared, diffusion sampling
Output Range 0 to 2000 ppm
Accuracy ±30 ppm ±2% of measured value*
Class 2; 20 to 30 Vdc/24 AC 50/60 Hz; 100 mA
max.
4 to 20 mA (clipped & capped)/0 to 10 Vdc
(selectable)
0 to 95% RH non-condensing
0.5 to 0.6 N-m (4.4 to 5.3 in-lbf) max.
0.2 N-m (2.0 in-lbf) max.
24 to 12 AWG (0.25 to 2.5mm2)
28 to 20 AWG (0.08 to 0.5mm2)
APPLICATIONS
• Controlling ventilation in
response to occupancy
• Facilitating compliance with
ASHRAE 62.1 standard for
air quality
Repeatability ±20 ppm ±1% of measured value
Response Time <60 seconds for 90% step change
WARRANTY
Limited Warranty 3 years
AGENCY APPROVALS
**
RTD/Thermistors in wall housings are not compensated for internal heating of product.
EMC Conformance: Low voltage direc tive 2014/35/EU and EMC directive 2014/30/EU.
EMC Special Note: Connect this product to a DC distribution network or an AC/DC power
adaptor with proper surge protec tion (EN 61000- 6-1 specification requirements).
* Measured at NTP
**The CE mark indicates RoHS2 compliance. Please refer to the CE Declaration of
Conformity for additional details.
Note: Rough handling and transpor tation may cause a temporary reduction of CO
accuracy. With time, the ABC function will tune the readings back to the correct accuracy
range. The default tuning speed is limited to 30 ppm per week.
• Office buildings, conference
rooms, schools, retail stores, etc.
sensor
2
TM
HQ0001740.G 0117
(89 mm)
Air Quality / Gas Detection | CDE & CWE Series
CWE WALL MOUNT
Wiring Diagram
* Note: Connector blocks and headers for optional
features are not included with non-option models.
CWE WALL MOUNT
Dimensional Drawing
Power (+24)
CO2 OUT
COMMON
N/A
Optional
RTD
RTD
CDE DUCT MOUNT
Wiring Diagram
mA/Volt Selection Switch
ABC Jumper
Calibration
Pushbutton
V+ CO2-OUT GND
mA Volt
LED
Conduit Adapter
*
1/2” NPT male/female
CDE DUCT MOUNT
Dimensional Drawing
6.7"
(170 mm)
10.2"
(258 mm)
4.8"
(122 mm)
3.5"
1.2"
(30 mm)
ORDERING INFORMATION
Duct Mo unt
Sensor Type
CDE (No Opt ions) CWE CWE
SB = 100R Platinu m, RTD
SC = 1k Platinum, RTD
SD = 10k T2, RTD, Th ermistor
SE = 2.2k, T hermis tor
SF = 3k, Therm istor
SG = 10k CPC, Th ermistor
SH = 10k T3, Ther mistor
SJ = 10k Dale, T hermistor
SK = 10k wi th 11k shunt , Thermistor
SM = 20 k NTC, Thermisto r
SN = 1800 ohm, Th ermistor
SR = 10k U S, Thermistor
SS = 10k 3A221, Thermistor
ST = 100k, T herm istor
SU = 20k “D ” Thermistor
SW = 10k T2 hig h accuracy, Thermi stor
SY = 10k T 3 high accuracy, The rmistor
Wall Mount , Te mp. Option
Blank = Clo ud white
B = Black
Housing Housing
Example:
CWE SH B
(78 mm)
Wall Mount , No Temp. Opti on
Blank = Clo ud white
B = Black
3.1"
2.4"
(61 mm)
Example:
CWE
7.8"
(198 mm)
B
HQ0001740.G 0117
TM
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