∙ Application : Industries and life safety

∙ Measurement Range : 0.0~100.0ppm

∙ Accuracy : ±3% F.S.

∙ Input Power : 3wired 24VDC ± 20%

∙ Output : RS-485 Modbus(default)

              4~20mA, 0~20mA, 0~10V, 2~10V(option)

CD-700(H2S) DATASHEET DS_CD-700(H2S)_Ver1.0.pdf첨부파일


The CD-700(H2S) transmitter can measure H2S (Hydrogen sulfide) concentration, temperature, and humidity. H2S ventilation and temperature control can be controlled through up to two relays. 
For customer convenience, various outputs such as RS-485Modbus communication and analog voltage/current are optional supported.
This product is a world-class, highly reliable product made by ELT SENSOR technology, 
a company specializing in gas sensors with 20 years of experience.
This CD-700 series has a variety of products equipped with not only a H2S sensor but also more than 10 types of environmental gas and dust sensors. (CxHy, CO2, H2S, NH3, NO2, NO, SO2, H2S, O3, PM, etc.)
It is very convenient to use because it can measure, manage, and control complex gases by connecting various types of sensors in the same CD-700 format.


ELT Sensor is a company located in Korea and leads gas sensor technology with 20 years of experience and top technology in NDIR gas sensor field.
The module is an electrochemical "hydrogen sulfide" gas measurement module.
It is shipped after individual calibration and calibration before the product is shipped to ensure high accuracy and stability.
Hydrogen sulfide measurement sensors can be used in various environments where harmful gases are generated. Typically, they can be installed in a closed environment such as toilets, septic tank treatment facilities, landfills, steel mills, oil refineries, petrochemicals, and shipyards to maintain a safe working environment.
It supports RS-485 Modbus-RTU and Analyst A-out outputs (current outputs such as 4-20mA) and can be applied to PLC and PC for easy application and use in industrial sites.