Brand Name: TEREN
Model Number: CDWN/ CDDN
Place of Origin: Guangdong, China (Mainland)
CDWN: Wall mount CO2 Transmitter optional with LCD or without LCD
CDWC: Wall mount CO2 Controller with LCD & keys
CDDN: Duct mount CO2 Transmitter
Applications & Features
Specifications for CDWN&CDDN
Sensor: NDIR sensor, with ABC algorithm*
Sampling Method: diffusion
Accuracy: see models
Response time: <10s (30cc/min, low airflow)
Drift: <±10ppm/year
Range: 0~2000ppm
Output: 4~20mA, 0~10V, RS485/Modbus
Load resistance: ≤500Ω (Current output),
≥2kΩ (Voltage output)
Power supply: 16~28VAC/16~36VDC
Display: Optional LCD(CDWN),with unit display
Display resolution: 1ppm
Working environment: 0~50°C, 5~95%RH (Non-condensing)
Storage temperature: -20~80℃
Housing material: fireproof ABS
Protection: IP30 (CDWN), IP65 (CDDN)
Approval: CE
*ABC algorithm: Automatic Baseline Correction, it constantly keeps track of the sensor's lowest reading over a few days interval and slowly corrects for any long term drift detected as compared to the expected fresh air value of 400 ppm CO2.
Models
| Model | CDWN CDDN |
Wall mount CO2 transmitter Duct mount CO2 transmitter |
|||
| Accuracy | 0 1 |
50 ppm + 5% reading 40 ppm + 3% readind |
|||
Output |
|
1 B |
4~20mA / 0~10VDC 4~20mA / 0~10VDC , RS485/Modbus |
||
Display (CDWN) |
0 1 |
N/A LCD |
Specifications for CDWC
Sensor: NDIR sensor, with ABC algorithm*
Sampling Method: diffusion
Accuracy: 50 ppm + 5% reading
Response time: <10s (30cc/min, low airflow)
Drift: <±10ppm/year
Range: 0~2000ppm (measure range 400~2000ppm)
Output: 2×SPST, 3A-30VDC/250VAC
Load resistance: ≤500Ω (Current output),
≥2kΩ (Voltage output)
Communication: optional RS485/Modbus
Power supply: 16~28VAC/16~36VDC
Display and keys: with LCD Display and 3 touch keys, see more details on LCD & Keys operation
Display resolution: 1ppm
Working environment: 0~50°C, 5~95%RH (Non-condensing)
Storage temperature: -20~80℃
Housing material: fireproof ABS
Protection: IP30
Approval: CE
*ABC algorithm: Automatic Baseline Correction, it constantly keeps track of the sensor's lowest reading over a few days interval and slowly corrects for any long term drift detected as compared to the expected fresh air value of 400 ppm CO2.
Models
| Model | CDWC |
Wall mount CO2 Controller |
|
| Communication | 0 1 |
N/A RS485/Modbus |
Sample Order |
Order |
OEM Order |
| Three work days | 2 weeks | 3 weeks |
Port
Shenzhen, Hong Kong
Why choose us ?
♦ Specilizng in manufacturing products of HVAC for almost 10 years.
♦ Harsh process of production and strict testing system.
♦ Material could be traced.
♦ High quality with competitive price.
♦ Delivery in time.
♦ Reply in 24 hours.
Certifications
Q1: How to get the latest price?
Tell me the models, quantity, and other special requirement.
Q2: Payment terms?
100% T/T in advance.
Q3: Delivery time?
One week.
Q4: Shippment?
DHL, UPS, TNT etc.
Q5: Is OEM/ODM available?
Yes, it's available.
Q6: Warranty?
18 months.
Never hesitate inquiry to us if you are interested in this product, we would like to know your requirement for model's part No, which is concern model's accuracy, output, display, communication, quantity etc. So that we can offer the exactly quotation for you. Thanks!
Verified Supplier - Shenzhen TEREN Control Technology Co., Ltd.
Bussiness Type: Manufacturer 
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