3in1 wall mount CO2/temperature /humidity/transmitter

l CDTH series carbon dioxide ( CO2 ) / temperature / humidity transmitters are designed for monitoring & controlling indoor air quality, temperature and humidity in one unit

l CDTHW is suitable for wall mount and CDTHD is suitable for duct mount

l High performance NDIR digital sensor and circuit, ensure precise measurement and temperature compensation

l Multiple optional RTD or thermistor sensors, compatible with a variety of control systems

l Stable, reliable and fast response

l 15 years of CO2 sensor life without maintenance

l All electrical terminals are on the inside bottom, avoid any possible destroy to PCB when wiring

l Digital technology applied, multiple outputs optional, over voltage and reverse polarity protection, high reliability and anti-interference capability

l Large LCD with unit indicator( CDTHW ), display carbon dioxide ( CO2 ), temperature and humidity alternatively

Specifications

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/16~35VDC

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.

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.

Accuracy table for temperature/ humidity

*When select RTD/ thermistor, total error will be 0.5°C more than the accuracy in the models

We focus on HVAC/R and BAS industry and supplying various instruments ,control products and service for more than 15 years.

With experienced technical R&D team. As a goal of becoming a qualified brand, we will continue to satisfy more customers all over the world.

We offer but not only these products :

1.Temperature sensor/transmitter/controller,

2.Temperature& humidity  transmitter ,

3.CO2/CO transmitter /controller

4.DPT differential pressure transmitter

5.Digit differential pressure gauge/transmitter

6.609 adjustable differential pressure switch

7.Water flow switch and LS level switch

If you have interest,please contact us with no hesitate,We are sure any of your inquiry will get our prompt reply.

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.