Gas detector

On-line compound toxic and harmful gas detector

Overview of on-line compound toxic and harmful gas detector

On-line compound toxic and harmful gas detector is used in: on-site 24-hour continuous online monitoring of various gas concentrations and temperature and humidity measurement, on-site concentration display, excessive sound and light alarm (optional), remote signal transmission. Using 2.5 inch high-definition color screen real-time display, the use of internationally renowned brands of gas sensors, the main detection principles are: electrochemical, infrared, catalytic combustion, thermal conductivity, PID photoion and other principles of gas sensors, Swiss high-precision capacitive digital temperature and humidity sensor. Advanced circuit design, mature kernel algorithm processing, unique shape design, has obtained a number of software works and appearance patents.

Suitable for detecting gas concentrations in pipelines or confined Spaces and atmospheric environments; Gas leaks and various background gases are nitrogen or oxygen with a high concentration of single gas purity. More than 500 kinds of detection. Durable explosion-proof shell and fluorocarbon paint surface treatment process for a variety of dangerous places and strong corrosive environment, wear resistance. Widely used in petroleum, chemical industry, metallurgy, refining, gas transmission and distribution, biochemical medicine and other industries.

Second, on-line compound toxic and harmful gas detector product characteristics

★ Can detect 1 ~ 6 kinds of gas at the same time, the unit is free to switch

★ Diversified communication methods

Can be real-time monitoring through wired or wireless remote transmission, network transmission; Three-wire system 4 ~ 20mA standard signal and standard bus RS485 (modbus-RTU) output at the same time; Optional 0 ~ 20mA, 1 ~ 5V, 0 ~ 5V, 0 ~ 10V output, wireless transmission (2 ~ 5km or unlimited distance), SMS alarm, frequency output 200 ~ 1000Hz, Hart protocol signal; Compatible with secondary instrument, data acquisition module, PLC, DCS system, can drive related equipment. The optional MIC2000 controller can monitor 1000 detectors simultaneously.

★ Infrared remote control

The standard infrared remote control is equipped with one-click operation through the function key of the infrared remote control, which can realize the operation without opening the cover in dangerous situations, such as: modifying the alarm point, concentration calibration, zero calibration, noise reduction, and factory restoration.

★ Rich man-machine interface

2.5-inch HD color screen, display real-time concentration, alarm, time, temperature, humidity, storage and other information; The menu interface uses HD simulation graphics to display the function names of each menu.

★ Large capacity data storage function (capacity can be customized), support a variety of storage methods

The standard data storage capacity of 100,000 pieces; Optional SD card storage function, support real-time storage, timing storage, or only store alarm concentration data; Support local view, delete data, can also be uploaded to the computer through the RS485 interface for data analysis or printing.

★ High temperature gas detection (optional)

Optional high temperature and high humidity pretreatment system can detect smoke at 1300 degrees. Gas detection at other temperatures can be customized.

★ Three display modes can be switched

At the same time display a variety of gas concentrations, large character circulation display single-channel gas concentration, real-time curve display.

★ Graphical display, reflecting the trend of gas concentration change over a period of time in the form of a curve

● Data recovery function, in case of misoperation can select partial or full recovery

● Can set whether to display the maximum value, minimum value, average value

● High precision temperature and humidity measurement (optional)

● A variety of alarm methods, when the alarm multi-directional three-dimensional indication alarm status

Includes: 3 groups of relay switching output (standard 1 group), sound and light alarm (optional), display visual alarm. Alarm types include: concentration alarm, fault alarm.

● Multiple alarm mode Settings: low alarm, high alarm, interval alarm, weighted average alarm

● Misoperation identification function: concentration calibration misoperation is automatically identified and prevented to avoid human factors

● Zero automatic tracking, long-term use is not affected by zero drift

● Multi-stage calibration of target points to ensure measurement linearity and accuracy

● English and Chinese interface is optional

● Wide operating temperature: -40 ~ +70℃, support temperature compensation

● Log recording

Record calibration log, maintenance log, fault record, fault resolution, sensor life expiration reminder, the next concentration calibration time reminder function.

● Intrinsic safety circuit design, explosion-proof, with two levels of lightning protection, anti-static ability. Meet the national standard, resist the impact of high strength pulse surge current. It has anti-reverse connection function. Meet EMI and EMC standards.

Three, online compound toxic and harmful gas detector technical parameters:

Detection of toxic gases, oxygen, carbon dioxide, flammable and explosive gases, TVOC, etc.

Any combination of gases.

Optional: Can detect any 1 ~ 6 kinds of gas and temperature and humidity at the same time.

Applications Petroleum, chemical industry, medicine, environmental protection, gas distribution, storage, gas analysis, air treatment and other need to be fixed installation, online detection of gas concentration occasions.

Detection range 0 ~ 1, 10, 100, 1000, 5000, 50000, 100000ppm, 200 mg/l,

100%LEL, 20%, 50%, 99.999%, 100%Vol optional, other ranges can be customized.

Resolution 0.01ppm or 0.001ppm (0 ~ 10 ppm); 0.01ppm (0 ~ 100 ppm),

0.1ppm (0 ~ 1000 ppm), 1ppm (0 ~ 1000 ppm or more),

0.01 mg/L (0-200% mg/L), 0.1%LEL, 0.01%, 0.001%Vol.

Detection principle Electrochemistry, catalytic combustion, infrared, thermal conductivity, PID photoion, etc., according to the gas type,

Range, site environment and user needs.

Allowable error ± 2%F.S (other or higher precision can be ordered)

Linearity ≤ ± 1%

Response time T90≤ 30 seconds repeatability ≤ ± 1% uncertainty ≤ ± 1%

Signal output bus RS485 (RTU), three (four) wire system 4 ~ 20mA, optional: 0 ~ 20mA,

1 ~ 5V, 0 ~ 5V, 0 ~ 10V, wireless transmission, network transmission, SMS alarm. Recovery time ≤ 30 seconds

Working temperature: -40℃ ~ +70℃, humidity: ≤ 10 ~ 95%RH (conventional) non-condensation occasions,

In the use of condensation occasions must be customized or ordered to indicate the use of the environment. Working pressure range: atmospheric pressure ± 30%, some sensors can be detected at 7 kg pressure

Display mode 2.5-inch HD color display on site, optional no display on site, or optional controller remote display, control, alarm

The operating voltage is 12 ~ 36VDC DC, the standard power supply for a single device is 24V, 1A or greater

Dc voltage regulated switching power supply

Maximum instantaneous current of power consumption: 60 MA for electrochemical principle, 120 MA for catalytic or infrared principle

Power reference 24V, 2.1A switching power supply can drive 30 toxic gas detectors, or 15

Combustible, infrared gas detector

Working mode Online installation, online detection, diffuse measurement; Optional pipe, flow,

Pumping measurement.

Installation mode Pipe type, wall hanging type. The working pressure of the pipe type is atmospheric pressure. 30%, beyond the range of pressure treatment.

Alarm mode default 1, optional 3 passive contact (dry node) output, three-level alarm,

Alarm point can be set. On-site audible and visual alarm (optional).

Connection cable 4 to 20mA select a three-core shielded cable, RS485 select a four-core, the distance exceeds 1000 meters

Single wire diameter ≥ 1.5mm; Both ends of the shielding layer are grounded and properly grounded.

Protection class IP66 Waterproof splash and short duration rain

Explosion-proof type Flameproof type

Explosion-proof mark Exd IIC T6 Gb

Implement standard GB15322.1-2019 "Combustible Gas Detector Part 1"

1. 2010 General Requirements for Electrical Equipment for Explosive Gas Environments

Eg. 2010 "Explosive gas environment electrical equipment flameproof type “d”"

Dimensions 260× 180× 90mm(L× H× W) Atmospheric chamber

260× 230× 90mm(L× H× W) Atmospheric chamber with light

240× 180× 90mm(L× H× W) Conventional air chamber

240× 230× 90mm(L× H× W) Regular with light

Weight 1.8Kg

Standard accessories manual, certificate, warranty card, outer box packaging

Options Integrated sound and light alarm, split sound and light alarm, 24V DC regulated power supply,

Accessories for computer monitoring: free PC software, RS485/RS232 converter,

Laptop without RS232 interface also need USB/RS232 conversion cable, if

A TCP/IP converter is also required for network transmission.

Accessory for storing more data: SD card.

Wireless transmission optional function, you can wireless data transmission to mobile phones, remote monitoring center, monitoring

Monitoring equipment such as computers, using the upper computer on the computer, data analysis, storage,

Printing and other functions

Pretreatment system options: normal temperature and high humidity pretreatment system, high temperature and high humidity pretreatment system,

High temperature, high humidity and high dust pretreatment system

Temperature and humidity measurement options: temperature -40℃~+120℃, accuracy 0.3℃

Humidity: 0-100%RH, accuracy 3%RH