Dual-Gas Detector Alarm

The dual gas detector simultaneously monitors the concentration of oxygen and combustible gases in the environment through two independent sensors. It triggers audible and visual alarms when gas concentrations exceed preset thresholds, providing early warning for gas leaks in confined space operations, chemical production, and other scenarios.
Selection
When selecting, it is essential to clearly identify the types of gases to be detected and confirm the need for dual-channel detection of oxygen and combustible gases; verify the sensor lifespan and calibration cycle; check the protection rating and explosion-proof certification; confirm the adjustable range of alarm thresholds; and evaluate the response time and data logging capabilities.

Terms

Standards

Instruments

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 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

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

Electrochemical sensor, Response Time less than 30 seconds, Measurement accuracy +/- 3% FS, 4-20mA standard signal output and passive relay control port, suitable for a variety of Gas detection needs.

$ 267.00

Support dual 4-20mA/RS485 signal input, integrated sound and light alarm and relay control, operation temperature range -10~ 50 ℃, can be connected to a variety of gas Detectors to achieve on-site detection and linkage control.

$ 151.00

Detect NH3 gas, range 0~ 100ppm, resolution 0.1ppm, Response Time T90 ≤ 120s, support sound and light alarm, Operating temperature -10~ 50 ℃, Working time for more than 60 hours, Portable design weighs only 170 grams.

$ 328.00

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

$ 267.00

Electrochemical sensor, Response Time less than 30 seconds, Measurement range 0-100ppm, 4-20mA signal output and explosion-proof structure, suitable for gas monitoring in harsh industrial environments.

$ 267.00

Support 32 Detector access, using 4-20mA signal transmission, with two-level alarm settings and 20,000 records Storage capacity, through the relay drive peripherals to ensure safety protection.

$ 401.00

High-precision Sensor is used to detect PM2.5 concentration, Response Time is instantaneous, Sensitivity can be adjusted to 5PPM, with sound and light alarm and automatic warm-up function, continuous work for 5 hours.

$ 157.00

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

Electrochemical sensor, Response Time less than 30 seconds, accuracy of +/- 3% FS, 4-20mA signal output and passive relay output, the shell is explosion-proof design.

$ 267.00

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

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

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