Flammable gas detection and alarm device

Flammable gas detection and alarm devices measure gas concentration through catalytic combustion or infrared absorption principles. When the sensor comes into contact with flammable gas, it generates an electrical signal change, which triggers audible and visual alarms upon reaching a preset threshold. These devices are used in locations such as petrochemical plants and gas pipelines to monitor leaks of gases like methane and propane, preventing explosion and combustion accidents.
Selection
When selecting, confirm that the type of gas to be measured matches the sensor type, and the lower explosive limit concentration determines the measurement range. Consider that the explosion-proof rating must align with the hazardous area classification, and the detector material should be suitable for environmental corrosiveness. Review response time and stability data, and perform regular calibration and maintenance to ensure long-term reliability.

Terms

Standards

Instruments

Two-channel split design supports multi-point centralized control, with 4-20mA signal input and two-level alarm settings, microprocessor to ensure accurate monitoring, relay output can drive external equipment linkage, Operating temperature range -10~ 50 ℃.

$ 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

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 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

ABS + PC shell is sturdy and durable, equipped with 2.0 inch 320 * 240 resolution display screen, supports methane, O2, H2S, CO four Gas detection, Response Time is the fastest 20 seconds, battery life is 8 hours, with sound and light vibration triple Alarm mode.

$ 344.00

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

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

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

Maximum 4 kinds of gas simultaneous detection, integrated temperature and Humidity compensation, with Internet of Things remote monitoring function, Response Time T90 ≤ national standard, Protection Rating IP66, suitable for a variety of Installation methods.

$ 693.00

Support simultaneous detection of 4 kinds of gases, integrated temperature Humidity detection function, physical + software double revisit Humidity compensation, Response Time T90 ≤ national standard, detection accuracy ≤ +/- 3% FS, with a variety of alarm and remote monitoring capabilities.

$ 658.00

Support 8 channels of 4-20mA signal input, can store 20,000 alarm records, with two-level alarm settings and relay output, suitable for multi-point centralized control to prevent explosions and fire accidents.

$ 212.00

Maximum support for simultaneous detection of 4 gases, integrated temperature and Humidity detection, with Internet of Things remote monitoring function, Response Time T90 ≤ national standard, Protection Rating IP66, suitable for a variety of Installation methods.

$ 658.00

Supports simultaneous detection of 4 gases and integrated temperature Humidity monitoring, adopts dual temperature Humidity compensation design, has zero point automatic correction function, Response Time T90 ≤ national standard, Protection Rating IP66, Operating temperature range -40~ 55 ℃.

$ 323.00

Industrial Sensor, Response Time less than 30 seconds, accuracy +/- 3% FS, with explosion-proof structure, support 4-20mA and RS485 output, suitable for a variety of Gas detection.

$ 193.00

Support 4-20mA/RS485 signal input, provide 6 passive switching and sound and light alarm functions, operating temperature 0~ 40 ℃, compatible with two-wire and three-wire equipment, suitable for gas safety detection.

$ 259.00

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