The CDE and CWE are non-dispersive infrared (NDIR) sensors designed for measuring environmental CO 2 concentration in ventilation systems 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. Input Power Class 2; 20 to 30 Vdc/24 AC 50/60 Hz; 100 mA max. Analog Output 4 to 20 mA (clipped & capped)/0 to 10 Vdc (selectable) Operating Temp. Range0 to 50 °C (32 to 122 °F) Operating Humidity Range 0 to 95% RH non-condensing Housing MaterialHigh impact ABS plastic Terminal Block Torque: CDE CWE 0.5 to 0.6 N-m (4.4 to 5.3 in-lbf) max. 0.2 N-m (2.0 in-lbf) max. Terminal Block Wire Size: CDE CWE 24 to 12 AWG (0.25 to 2.5mm 2 ) 28 to 20 AWG (0.08 to 0.5mm 2 ) Sensor TypeNon-dispersive infrared, diffusion sampling Output Range0 to 2000 ppm Accuracy±30 ppm ±2% of measured value* CWE CDE RTD/Thermistors in wall housings are not compensated for internal heating of product. EMC Conformance: Low voltage directive 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 protection (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 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. Repeatability±20 ppm ±1% of measured value Response Time<60 seconds for 90% step change WARRANTY Limited Warranty3 years AGENCY APPROVALS ** 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 800.354.8556 | +1 503.598.4564 | sales@veris.com | intl@veris.com | www.veris.com TM Air Quality / Gas Detection | Standard Duct and Wall CO 2 Sensors CDE & CWE SERIES Field-selectable 4 to 20 mA / 0 to 10 Vdc Output Microprocessor based Microprocessor-based design increases accuracy and reduces installation time 4 to 20 mA/ 0 to 10 Vdc 4 to 20 mA/0 to 10 Vdc output for flexible control system interface NDIR Non-dispersive infrared technology (NDIR) repeatable to ±20 ppm ±1% of measured value... high accuracy measurements Self-calibrating Innovative self-calibration algorithm...easy to maintain. 5-year calibration interval (recommended) Sensitivity Low ambient sensitivity HQ0001740.G 0117Power (+24) CO2 OUT COMMON N/A RTD RTD Optional * * Note: Connector blocks and headers for optional features are not included with non-option models. mAVolt LED Calibration Pushbutton V+ CO2-OUT GND Conduit Adapter 1/2” NPT male/female ABC Jumper mA/Volt Selection Switch 4.8" (122 mm) 1.2" (30 mm) 3.5" (89 mm) 6.7" (170 mm) 3.1" (78 mm) 7.8" (198 mm) 2.4" (61 mm) 10.2" (258 mm) Sensor Type SB = 100R Platinum, RTD SC = 1k Platinum, RTD SD = 10k T2, RTD, Thermistor SE = 2.2k, Thermistor SF = 3k, Thermistor SG = 10k CPC, Thermistor SH = 10k T3, Thermistor SJ = 10k Dale, Thermistor SK = 10k with 11k shunt, Thermistor SM = 20k NTC, Thermistor SN = 1800 ohm, Thermistor SR = 10k US, Thermistor SS = 10k 3A221, Thermistor ST = 100k, Thermistor SU = 20k “D” Thermistor SW = 10k T2 high accuracy, Thermistor SY = 10k T3 high accuracy, Thermistor CDE (No Options)CWECWE Duct Mount Wall Mount, Temp. Option Wall Mount, No Temp. Option HousingHousing Blank = Cloud white B = Black Blank = Cloud white B = Black Example: CWESHB Example: CWE ORDERING INFORMATION B CWE WALL MOUNT Wiring Diagram CWE WALL MOUNT Dimensional Drawing CDE DUCT MOUNT Dimensional Drawing CDE DUCT MOUNT Wiring Diagram Air Quality / Gas Detection | CDE & CWE Series HQ0001740.G 0117Next >