1、 Product Description:
The VOC detector is suitable for continuous online detection of VOC concentration in various industrial and special environments, providing early warning for the safety of hazardous operations. The instrument adopts imported sensor and microcontroller technology, with stable signals, high accuracy, good repeatability, and explosion-proof wiring methods suitable for various hazardous areas. Immediately activate the sound and light alarm signal or drive the exhaust system when the preset alarm point is exceeded; The standard 4-20mA signal can be directly connected to the factory DCS system, and the RS485 digital signal is connected to the factory upper computer; The instrument adopts embedded microcontroller technology, which is easy to operate, fully functional, and highly reliable.

2、 Product Features:
① Imported high-performance sensors with excellent anti-interference performance
② Adopting microprocessor technology, it has fast response speed and high measurement accuracy,
Good stability and repeatability
③ The testing site has on-site sound and light alarm function, and an instant alarm is triggered when the gas concentration exceeds the standard,
It 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, work 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 three buttons to achieve single person single point on-site maintenance of technical parameters


3、 Technical parameters:
Gas detection: VOC gas
Detection method: fixed, online detection
Measurement range: 0-2 ppm、0～10ppm、0～50ppm、0～100ppm、0～500ppm、0～1000ppm、0～2000ppm、0～10000ppm optional
Sampling method: ① Free diffusion - online continuous detection, free diffusion detection method
② Inhalation type - external air pump can be equipped with a flow type adapter for inlet and outlet or an internal air pump to achieve pump suction detection (air pump optional)

Detection principle: PID photoionization
Resolution: 0.01ppm (0-100pm); 0.1ppm(0～1000ppm); 1ppm (1000ppm and above)
Accuracy: ± 1% FS
Repeatability: ± 1.0%
Linear error: ± 1.0%
Response time: ≤ 10 seconds
Recovery time: ≤ 30 seconds
Transmission distance: 1100 meters (Rvv0.75 square millimeter shielded cable)
Working temperature: -20 ℃~+50 ℃
Relative humidity: 10% to 95% RH
(For higher temperature and humidity detection environments, you can choose our pre treated gas monitoring system.)
• Output signal: Users can choose according to their actual requirements, capable of transmitting up to 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
• Connection method: 3/4 "NPT internal thread
Shell material: die cast aluminum, explosion-proof and corrosion-resistant
Explosion proof mark: Ex iaII CT6 Ga
• Protection level: IP65
• Working power supply: 24VDC (12-30VDC)
• Working temperature: -40~60 ℃ (customized according to special requirements)
• Working humidity: ≤ 95% RH, no condensation (humidity>90% RH, can be equipped with a filter)
Work pressure: ≤ 200Kpa
• Size: 170 × 140 × 80mm
• Weight: 1.5Kg