Brand Name: TEREN
Model Number: CDTHW/CDTHD
Place of Origin: Guangdong, China (Mainland)
CDTHW: Wall mount CO2/ Temperature/ Humidity Transmitter, optional LCD display(CDTHW)
CDTHD: Duct mount CO2/ Temperature/ Humidity Transmitter
Applications & Features
Specifications for CDWN&CDDN
Carbon dioxide (CO2 )
Sensor: NDIR sensor, with ABC algorithm*
Sampling Method: diffusion
Accuracy: (40+3%MV) ppm
Response time: <10s (30cc/min, low airflow)
Drift: <±10ppm/year
Range: 0~2000ppm (measure range 400~2000ppm)
Output: 4~20mA, 0~10V, RS485/Modbus
Temperature
Sensor: Digital, RTD or thermistor, see models
Range: 0~50°C
Accuracy: see accuracy table
Output: 4~20mA, 0~10V, RS485/Modbus or RTD / thermistor
Relative Humidity
Sensor: Digital polymer
Range: 0~100%RH
Accuracy: see accuracy table
Hysteresis: <±1%RH
Response time: <10s (25°C, in slow air)
Drift: <±0.5%RH/year
Output: 4~20mA, 0~10V, RS485/Modbus
Power supply: 16~28VAC/16~36VDC
Load resistance: ≤500Ω (Current output),≥2kΩ (Voltage output)
Display: Optional LCD Display (CDTHW)
Display resolution: 1ppm, 0.1°C, 0.1%RH
Working environment: 0~50°C, 0~95%RH (Non-cond.)
Temp. compensation: 0~50°C
Storage temperature: -20~60°C
Housing material: ABS+PC (CDTHW), fireproof ABS(CDTHD)
Protection: IP30 (CDTHW), IP65 (CDTHD)
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 | CDTHW CDTHD |
Wall mount CO2 / T/ RH Transmitter Duct mount CO2 / T/ RH Transmitter |
|||
CO2 /Hum. Output |
1 C |
4~20mA / 0~10VDC RS485/Modbus |
|||
Temp. Output |
|
1 3 4 5 6 7 9 A C |
4~20mA / 0~10VDC PT1000,±0.2°C @25°C PT100, ±0.2°C @25°C NTC20K, ±0.4°C @25°C Ni1000, ±0.4°C @25°C NTC10K-II, ±0.4°C @25°C NTC10K-III, ±0.4°C @25°C NTC10K-A, ±0.4°C @25°C RS485/Modbus |
||
Display (CDTHW) |
0 1 |
N/A LCD |
*1. All products are factory set to 0-10V as output default, and can be set to 4-20mA by jumper on the PCB
*2. See resistance table on page 1 of this catalog.
Models Accuracy table for temperature/ humidity
Outputs |
CDTHW | CDTHD |
||
T (@10~40°C) |
RH (25°C, 20~80%RH) |
T |
RH (25°C, 20~80%RH) |
|
0~10VDC | <±0.5°C | 3%RH | <±0.5°C | 3%RH |
4~20mA | <±1.0°C | 5%RH | <±0.5°C | 3%RH |
RS485/ Modbus |
<±0.5°C | 3%RH | <±0.5°C | 3%RH |
RTD/ thermistor |
See models | See models | See models | See models |
*When select RTD/ thermistor, total error will be 0.5°C more than the accuracy in the models.
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 output, display, communication, quantity etc. So that we can offer the exactly quotation for you. Thanks!