Infrared Gas Alarm

Infrared gas alarms detect gas concentrations by utilizing the absorption characteristics of gases for specific wavelengths of infrared light. The sensor emits an infrared beam that passes through the gas being measured, and the receiver calculates the gas content based on the attenuation of light intensity. They are used in environments such as chemical plants and mines to monitor leaks of combustible or toxic gases.
Selection
Confirm the type of gas to be tested and its infrared absorption peaks during selection. Choose the model based on the measurement range and accuracy requirements. Consider explosion-proof ratings and environmental adaptability, and check the sensor lifespan and calibration cycle. Compare response time and stability, ensuring that alarm thresholds are adjustable and comply with safety standards.

Terms

Standards

Instruments

Using infrared NDIR detection principle, range 0-5% Vol, Response Time ≤ 30 seconds, support 4-20mA, RS485 and switch output, with explosion-proof structure and remote monitoring capability.

$ 332.00

Supports 4-20mA signal input, compatible with two-wire and three-wire devices, provides 6 passive switches and RS485 interfaces, with two-level alarm settings, operating temperature 0-40 ℃, suitable for gas safety detection.

$ 212.00

Support 16 4-20mA signal input, 4.3 inch color screen display, can store 20000 alarm records, with two-level alarm and four sets of relay output, suitable for multi-point centralized control of Gas detection.

$ 259.00

Using shortwave infrared technology, temperature range 200~ 2200 ℃, accuracy +/- 2%, with laser positioning, data retention and emissivity adjustable functions, Response Time 500ms, object distance ratio 80:1.

$ 307.00

Support 4-20mA/RS485 signal input, compatible with two-wire and three-wire devices, providing up to 6 passive switching quantities, two-level alarm can be freely set, suitable for gas safety detection.

$ 259.00

Support 4-20mA signal input and RS485 upload, with 2-level alarm and 2 relay output, compatible with two-wire and three-wire equipment, fast response speed and high measurement accuracy, suitable for a variety of Gas detection scenarios.

$ 140.00

Support 4-20mA signal input, compatible with two-wire and three-wire devices, providing up to 6 passive switching and sound and light alarm functions, operating temperature 0-40 ℃, suitable for a variety of Gas detection scenarios.

$ 183.00

Using Industrial Sensor, Response Time less than 30 seconds, accuracy +/- 3% FS, shell explosion-proof structure, 4-20mA standard signal output, can detect a variety of gas concentrations and have sound and light alarm function.

$ 267.00

Using infrared NDIR detection principle, range 0-3% Vol, Response Time ≤ 30 seconds, with explosion-proof structure and a variety of signal output, support remote monitoring and alarm functions.

$ 977.00

Explosion-proof structure design, Response Time is less than 30 seconds, with 4-20mA standard signal output, can detect a variety of gas concentrations and set high and low alarm points to ensure industrial environment safety monitoring.

$ 267.00

Using infrared NDIR detection principle, range 0~ 2% Vol, resolution up to 0.001, Response Time ≤ 30 seconds, support a variety of signal output and remote alarm, Sensor life up to 10 years.

$ 977.00

Using infrared NDIR detection principle, range 0-5000ppm, Response Time ≤ 30 seconds, with flameproof structure and a variety of signal output, support remote monitoring and intelligent Sensor technology.

$ 1235.00

Using Semiconductor Sensor, Response Time T90 is less than 10 seconds, detecting a variety of combustible gases, range 0~ 50% LEL, with sound and light alarm and LED large screen display.

$ 141.00

Using infrared NDIR detection principle, range 0~ 1% Vol, resolution up to 0.001, Response Time ≤ 30 seconds, support 4-20mA, RS485 and wireless signal output, with flameproof design and 10 years Sensor life.

$ 977.00

Using infrared NDIR detection principle, range 0-1000ppm, Response Time ≤ 30 seconds, with flameproof structure and a variety of signal output options, support remote data transmission and customized range.

$ 848.00

Articles