Online hydrogen sulfide alarm

The online hydrogen sulfide alarm detects the concentration of hydrogen sulfide gas in the air through an electrochemical sensor and triggers audible and visual alarms when the concentration exceeds the preset threshold. It is used in places such as chemical plants and wastewater treatment facilities where there is a risk of hydrogen sulfide leakage, enabling continuous monitoring and early warning.
Selection
Ensure the detection range covers 0-100 ppm when selecting, and it must have explosion-proof certification and an IP65 protection rating. Prioritize models with digital displays and 4-20mA output, and the sensor lifespan should exceed 2 years. The installation location should be close to potential leakage points and avoid areas with strong airflow.

Terms

Standards

Instruments

Using electrochemistry gas Sensor, Response speed, Measurement accuracy. Support 4-20mA, RS485 and other signal output, with overvoltage, lightning protection, short circuit and other multiple circuit protection functions, remote monitoring and data query.

$ 751.00

Electrochemical sensors imported, detection accuracy +/- 2% F. S, Response Time less than 10 seconds, with intrinsically safe circuit design and explosion-proof certification, support a variety of signal output and remote monitoring functions.

$ 296.00

Electrochemical sensor, Measurement range 0-100ppm, resolution 1ppm, Response Time less than 30 seconds, explosion-proof structure design to ensure safe and reliable operation.

$ 193.00

Electrochemical sensor technology, detection accuracy +/- 2% F. S, Response Time less than 10 seconds, with intrinsically safe circuit design and explosion-proof certification, support a variety of signal output interfaces, automatic tracking zero point to prevent drift, adapt to -30~ 50 ℃ working environment.

$ 361.00

Can simultaneously detect four gases, Electrochemical sensor, Response Time instant, alarm sound up to 80 decibels, operation temperature range -10~ 50 ℃, portable design weighs only 360 grams.

$ 241.00

It can simultaneously detect 4 kinds of gases and integrate temperature Humidity monitoring, adopts dual temperature Humidity compensation design, supports diffusion and pump suction Sampling method, has a 10-Meter visual distance color screen and a variety of wireless communication options, and the Protection Rating is IP66.

$ 323.00

Adopt MCU chip to achieve low power consumption operation, detection error ≤ +/- 3% F. S, Response Time ≤ 30 seconds, support 4-20mA/RS485/switch output, can be operated by remote control without opening the lid, with local sound and light alarm and remote monitoring capabilities.

$ 202.00

Fast Response with Diffusion Pneumatic Design, High definition Color Screen and Four Alarm modes, Support Wireless Communication and IP66 Protection Rating, detection range 0~ 500ppm, battery life 12-55 hours.

$ 254.00

Electrochemical sensor, Response Time ≤ 15 seconds, with 6000 alarm record query function, super high waterproof design, support sound and light vibration triple alarm, Sensor life 2 years.

$ 146.00

Electrochemical sensor, range 0~ 100ppm, with automatic zero correction and temperature compensation function, support 4~ 20mA and RS485 output, suitable for dangerous places 1 and 2 zones.

$ 172.00

Electrochemical sensors imported, detection accuracy +/- 2% F. S, Response Time less than 10 seconds, with explosion-proof certification and a variety of signal output interfaces, support remote monitoring and automatic Zero tracking, suitable for hazardous environments.

$ 682.00

Electrochemical sensor principle, detection accuracy +/- 2% F. S, Response Time less than 10 seconds, with Intrinsic Safety (IS) design and automatic Zero tracking function, support a variety of signal output and remote monitoring.

$ 361.00

Electrochemical sensors imported, detection accuracy +/- 2% F. S, Response Time less than 10 seconds, with intrinsically safe circuit design and explosion-proof certification, support a variety of signal output and remote monitoring, strong anti-interference ability.

$ 682.00

The device supports simultaneous detection of 4 gases and integrates temperature and Humidity monitoring, adopts physical + software double repetition Humidity compensation, Response Time T90 ≤ national standard, has a variety of wireless communication options and remote paraMeter configuration functions, and is suitable for complex industrial environments.

$ 716.00

Electrochemical sensor, high detection accuracy, Response Time less than 60 seconds. With IP65 waterproof level, support vibration, sound and light triple alarm, built-in 1500mAh lithium battery can work continuously for more than 8 hours.

$ 145.00