Veris CWE Datasheet

CDE & CWESERIES

Standard Duct and Wall CO2 Sensors

Field-Selectable

VERIS INDUSTRIES

CDE

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

● Oce buildings, conference rooms, schools, retail stores, etc.

AIR QUALITY

CWE

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 exible control system interface

● 3-year factory warranty from date of purchase

Yea r

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 impac t ABS plastic Sensor Type Non-dispersive infrared, diusion sampling Output Range 0-2000 ppm Accurac y ±30 ppm ±2% of measured value* Repeatability ±20 ppm ±1% of measured value Response Time <60 seconds for 90% s tep 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 specication requirements). * Measured at NTP

Note: Roug h handling and transpor tation may cause a temporary red uction of CO2 sensor accuracy. With time, th e ABC function will tune th e readings back to the correct accu racy range. The default tunin g speed is limited to 30 ppm per week.

800.354.8556

Warranty

+1 503.598.4564

www.veris.com

HQ00 0174 0.B 01131

800.354.8556

+1 503.598.4564

APPLICATION/WIRING DIAGRAMS

CWE Wall Mount

Power (+24)

CO2 OUT

COMMON

* Note: Connector blocks and h eaders for optional features are not included with non-option models.

N/A

Optional

RTD

DIMENSIONAL DRAWINGS

www.veris.com

CALIBRATION

PUSHBUTTON

LED

CDE Duct Mount

CO2-OUT

V+

GND

CONDUIT ADAPTER (included)

1/2” NPT MALE/FEMALE (included)

CWE Wall Mount

4.8"

(122 mm)

3.5"

(89 mm)

ORDERING INFORMATION

Duct Mount

CDE

(No O ptio ns)

CWE

1.2"

(30 mm)

all models

Wall Mount, Temp. Opti on

Sensor Type

SB = 100R Plati num, RTD SC = 1k Platinum, RTD SD = 10k T2, RTD, Therm istor SE = 2.2k, Ther mistor SF = 3k, Thermi stor SG = 10k CPC, Thermis tor SH = 10k T3, Thermis tor SJ = 10k Da le, Thermistor SK = 10k w/11k shunt, The rmistor SM = 20k NTC, Ther mistor SN = 1800 ohm, Th ermistor SR = 10k US, Thermistor SS = 10k 3A221, Thermist or ST = 100k, Ther mistor SU = 20k “D” The rmistor SW = 10k T2 high accuracy, Thermistor SY = 10k T3 high accuracy, Thermistor SZ = 10k E1, Thermistor

6.7"

(170 mm)

Housing

Blank = Cloud white B = Black

Examp le:

CWE SH B

CDE Duct Mount

10.2"

(258 mm)

3.1"

(78 mm)

2.4"

(61 mm)

7.8"

(97 mm)

Wall Mount, No Temp. Op tion

Housing

CWE

Blank = Cloud white B = Black

ACCESSORIES

Calibration kits and gases (AA01, AA26, AA27, AA28, AA29) Handheld air qua lity testers (1010, 1008, 770) Replacement covers for wall uni ts (AA51, AA51B) Replacement cloud white wall h ousing (AA55)

AA011010

AIR QUALITY

Examp le:

CWE B

AA51/AA51B

AA55

HQ00 0174 0.B 01131