AIR QUALITY
VERIS INDUSTRIES
800.354.8556
+1 503.598.4564
www.veris.com
DESCRIPTION
CDL/CWL carbon dioxide sensors maximize energy savings, while ensuring optimal
ventilation. These sensors allow ventilation systems to be controlled by the amount
of CO
2
present in a space. The CWL/CDL Series detect uctuations in CO
2
levels and
signal ventilation systems to provide an inlet of fresh air optimal for the space at a
given time saving energy and ensuring tenant comfort.
APPLICATIONS
● Controlling ventilation in response to occupancy
● Facilitating compliance with ASHRAE 62.1 standard for air quality
● Oce buildings, conference rooms, schools, retail stores, etc.
Individual or 3-in-1 CO
2
,
RH, and Temperature
Deluxe Duct and Wall
CO2 Sensors
SPECIFICATIONS
Input Power 20 to 30VDC/24VAC; 100mA max.
Analog Output 4-20mA (clipped & capped)/0-5VDC/0-10VDC (selectable)
Operating Temperature Range CDL: 0° to 50°C (32° to 122°F)
CWL: No humidity option: 0° to 50°C (32° to 122°F); With humidity option: 10° to 35°C (50° to 95°F)
Operating Humidity Range 0 to 95% RH noncondensing
Housing Material High impact ABS plastic
CO
2
Transmitter:
Sensor Type Non-dispersive infrared (NDIR), diusion sampling
Output Range 0-2000/5000 ppm (programmable)
Accuracy ±30 ppm ±2% of measured value*
Repeatability ±20 ppm ±1% of measured value
Response Time <60 seconds for 90% step change
RH Transmitter:
HS Sensor Fully replaceable, digitally proled thin-lm capacitive (32-bit mathematics) U.S. Patent 5,844,138
Accuracy ±2% from 10 to 80% RH @ 25°C; NIST traceable multi-point calibration
Hysteresis 1.5% typical
Stability ±1% @ 20°C (68°F) annually for two years
Output Range 0-100% RH
Temperature Coecient ±0.1% RH/°C above or below 25°C (typical)
Temperature Transmitter:
Sensor Type Solid-state, integrated circuit
Accuracy ±0.5°C (±1°F) typical
Resolution 0.1°C (0.2°F)
Output Range 10° to 35°C (50° to 95°F)
Relay Contacts:
1 Form C (SPDT) (on models without setpoint slider option) 1A@30VDC, resistive; 30W max.
RTD/Thermistors in wall packages 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 specication requirements).
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.
FEATURES
● Microprocessor-based design increases accuracy and reduces installation time
● Non-dispersive infrared technology (NDIR) repeatable to ±20 ppm ±1% of
measured value...high accuracy measurement
● Innovative self-calibration algorithm...easy to maintain
● 5-year calibration interval (recommended)
● Field-selectable outputs for operation exibility
● Integrated transducer and probe...eliminates the need to install a separate
pick-up tube
● Snap-on faceplate...no screws required, making installation and service easy
● Adjustable duct probe...simplies installation and airow monitoring
● CO
2
, humidity, and temperature sensing all in one compact device...fewer units
to buy and install
C SERIES
CDL
CWL
HQ0001739.B 01131
(2 pages)
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