Veris Industries CWE SERIES Datasheet - Manual

AIR QU
ALIT
Y
VERIS INDUSTRIES
800.354.8556 +1 503.598.4564 www.veris.com
Standard Duct and Wall
CO2 Sensors
Field-Selectable
4-20mA/0-10VDC Output
DESCRIPTION
The CDE and CWE are non-dispersive infrared (NDIR) sensors designed for measuring
environmental CO2 concentration in ventilation systems and indoor living spaces.
Their measurement range of 0-2000 ppm makes them compliant with ASHRAE and
other standards for ventilation control
The CWE/CDE Series provides a user-selectable 4-20mA or 0-10VDC output for
versatility. Microprocessor-based digital electronics and a unique self-calibration
algorithm improves long-term stability and accuracy.
APPLICATIONS
● Controlling ventilation in response to occupancy
● Facilitating compliance with ASHRAE 62.1 standard for air quality
● Office buildings, conference rooms, schools, retail stores, etc.
SPECIFICATIONS
Input Power 20 to 30VDC/24AC; 100mA Maximum
Analog Output 4-20mA (clipped and capped)/0-10VDC (selectable)
Operating Temperature Range 0° to 50°C (32° to 122°F)
Operating Humidity Range 0 to 95% RH noncondensing
Housing Material High impact ABS plastic
Sensor Type Non-dispersive infrared, diffusion sampling
Output Range 0-2000 ppm
Accuracy ±30 ppm ±2% of measured value*
Repeatability ±20 ppm ±1% of measured value
Response Time <60 seconds for 90% step change
RTD/Thermistors in wall housings are not compensated for internal heating of product.
EMC Conformance: Low voltage directive 2006/95/EC and EMC directive 2004/108/EC.
EMC Special Note: Connect this product to a DC distribution network or an AC/DC power adaptor with proper surge protection (EN 61000-6-1:2007 specification requirements).
* Measured at NTP
Note: Rough handling and transportation may cause a temporary reduction of CO
2
sensor 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.
Year
Warranty
3
CWE
CDE
FEATURES
● Microprocessor-based design increases accuracy and reduces installation time
● Non-dispersive infrared technology repeatable to ±20 ppm ±1% of
measured value...high accuracy measurements
● Innovative self-calibration algorithm...easy to maintain
● 5-year calibration interval (recommended)
● Low ambient sensitivity
● Output 4-20mA/0-10V for flexible control system interface
●
3-year factory warranty from date of purchase
CDE & CWE SERIES
HQ0001740.B 01131