Product Introduction
The ZDG2 series gas sensor module is a versatile, intelligent, and miniature sensor. It can be equipped with gas sensors based on various principles, including semiconductor, catalytic combustion, electrochemical, infrared, and PID. The module supports output options such as UART (standard), I2C (optional), linear analog voltage (optional), and PWM (optional). This sensor module features mature gas sensors and high-performance processors. It transmits the sensor’s concentration data to the host computer via the UART interface using the Modbus protocol. It also offers an optional linear voltage signal. Both digital and analog voltage signals have been calibrated.
Product Features
High sensitivity, fast response speed, no preheating, the customer’s upper computer can add preheating, recommended 180s
Both standard output and digital output are available
Multi-protocol support for digital output, standard modbus and compatible simple protocols
Fast response and recovery
Temperature compensation
Long term stability
Long service life and anti-poisoning
Resistance to water vapor interference
Application
Detection of gas concentration in industrial and commercial environments.
Technical Specifications
| Working voltage | 9-30V DC |
| Working current | <150mA (current size depends on sensor type) Electrochemistry <5mA Semiconductors <100mA Catalytic combustion <160mA Infrared <100mAPID<50mA |
| Measuring range | The factory release has been set, subject to actual conditions |
| Output signal | 0.4~2V DC/UART /4-20MA/RS485/Modbus |
| Resolution ratio | 1%FSD |
| Preheating time | 0s |
| Response time | T90<30s |
| Accuracy | ±5%F.S |
Dimensions
Measurable Gases
| Detected Gas | Detection Range | Resolution | Low/High alarm point | Detection Accuracy |
| Combustible ( CH4,LPG) | 0-100%LEL | 1%LEL | 20/50%LEL | ±5%FS |
| CO | 0-500/1000/2000PPM | 1PPM | 50/100PPM | ±5%FS |
| H2S | 0-100/200/500PPM | 1PPM | 10/20PPM | ±5%FS |
| 02 | 0-30%VOL | 0.1%VOL | 19/23%VOL | ±5%FS |
| NH3 | 0-10/50/100/500PPM | 0.1/1PPM | 20/50PPM | ±5%FS |
| CL2 | 0-50PPM | 0.1PPM | 2/5PPM | ±5%FS |
| H2 | 0-1000PPM | 1PPM | 50/100PPM | ±5%FS |
| HCL | 0-10PPM | 0.1PPM | 2/5PPM | ±5%FS |
| NO | 0-50/100/200PPM | 1PPM | 25/50PPM | ±5%FS |
| NO2 | 0-20/100PPM | 0.1PPM | 5/10PPM | ±5%FS |
| PH3 | 0-20/2000PPM | 0.1/1PPM | 5/200PPM | ±5%FS |
| SO2 | 0-20/100PPM | 0.1/1PPM | 5/10PPM | ±5%FS |
| HCN | 0-10PPM | 0.1PPM | 2/5PPM | ±5%FS |
| ETO | 0-100PPM | 1PPM | 10/20PPM | ±5%FS |
| CLO2 | 0-100PPM | 1PPM | 10/20PPM | ±5%FS |
| HF | 0-10PPM | 0.1PPM | 5/10PPM | ±5%FS |
| F2 | 0-10PPM | 0.1PPM | 2/5PPM | ±5%FS |
| Br2 | 0-10PPM | 0.1PPM | 2/5PPM | ±5%FS |
| HCHO | 0-10PPM | 0.1PPM | 2/5PPM | ±5%FS |
| SF6 | 0-1000PPM | 1PPM | 50/100PPM | ±5%FS |
| CO2 | 0-1/5/10/20%VOL | 50/100PPM | 2.5/5%VOL | ±5%FS |
| VOC | 2-10000PPM | 1-10PPb | 100PPb/100PPM | ±5%FS |
