Product Features
① Imported high-performance sensors with excellent anti-interference performance
② Adopting advanced microprocessor technology, it has fast response speed, high measurement accuracy, good stability and repeatability
③ The detection site has on-site sound and light alarm function, and the gas concentration exceeds the standard and immediately alarms, which is a safety guarantee for dangerous on-site operations
④ On site backlit large screen multi parameter LCD display, visually displaying gas concentration, type, unit, working status, etc
⑤ Independent chamber, no need for on-site calibration when replacing sensors, automatic identification of key sensor parameters
⑥ Full range temperature digital automatic tracking compensation ensures measurement accuracy
⑦ Full software automatic calibration function, this machine is equipped with standard four buttons to achieve single person single point on-site maintenance of technical parameters

Fixed online VOCs sound and light alarm detector

Technical Specifications:

Gas detection: VOCs gas

Detection range: 0-10 PPM、20PPM、50PPM、100PPM、500PPM、1000ppm、2000ppm、5000ppm、10000PPM、20%VOL、50%VOL、100%VOL The measurement range is customized according to the usage environment or user needs

Resolution: 0.01ppm (0-100ppm); 0.1ppm（0～1000 ppm）； 1ppm (above 1000ppm), 0.01% VOL

Detection principle: Thermal conductivity detection, PID photonics detection optional

Detection methods: fixed, online detection, diffusion measurement

Installation methods: wall mounted, pipe mounted, flow-through, pump suction optional

Accuracy: ± 3% FS

Repeatability: ± 1.0%

Linear error: ± 1.0%

Response time: ≤ 30 seconds

Recovery time: ≤ 60 seconds

Explosion proof mark: Exia Ⅱ CT6 Ga

A、 Suitable for Zone 0, Zone 1, Zone 2, locations containing explosive gas mixtures of Class IIA-IIC and T1-T6;

B、 The product has passed the inspection of the National Explosion proof Electrical Product Quality Inspection Center and obtained the Explosion proof Certificate of Conformity;

Explosion proof connection thread: 3/4'NPT

Maximum transmission distance: 1100 meters (Rvv0.75 square millimeter shielded cable), supports wireless transmission without wiring

Working temperature: -20 ℃~+50 ℃

Relative humidity: 10% to 95% RH

Protocol signal output: HJ-T212 protocol connected to environmental protection platform (optional)

Output signal: Users can choose according to their actual requirements, with a maximum transmission distance of 2000 meters (single core 1mm ² shielded cable)
① Three wire 4-20mA current signal output
② RS-485 digital signal output, combined with RS232 adapter card, can store data on the computer (optional)
③ 2 sets of relay outputs: passive electric shock capacity 220VAC 3A, 24VDC 3A
④ Alarm signal output: on-site sound and light alarm, alarm sound:<90 decibels
Shell material: die cast aluminum, explosion-proof and corrosion-resistant
• Working power supply: 24VDC (12-30VDC)

• Maximum power consumption: 3W
• Working temperature: -20~50 ℃ (customized according to special requirements)
• Working humidity: ≤ 95% RH, no condensation (humidity>90% RH, can be equipped with a filter)
Work pressure: ≤ 200Kpa
• Size: 220 × 220 × 90mm
• Weight: 1.8Kg

Fixed online VOCs sound and light alarm detectorWidely used in industries such as petroleum, chemical, environmental protection, metallurgy, refining, gas transmission and distribution, and pharmaceuticals