316L stainless steel corrosion-resistant methyl bromide CH3Br gas concentration detection alarm
Category: Products Fixed gas detector Stainless steel gas detector
Key words: Products
Model: SK/MIC-600-CH3BR
Measurement object: Methyl bromide
Product Description
Product Parameters of On-line Methyl Bromide Gas Concentration Detector
| Output signal |
① 4-20mA signal: standard 12-bit precision 4-20mA output chip, transmission distance 1Km ② RS485 signal: standard MODBUS RTU protocol, transmission distance 1Km ③ voltage signal: 0.4-2V,0-5V,0-10V output, optional (voltage output and current output two choose one) ④ Switching signal: standard 1 set of passive contact relay, capacity 220VAC3AV/24VDC3A |
GPRS, 4G, WIFI, LORA, ZigBee and other wireless signals | |
| Measuring gas | Methyl bromide gas | Detection principle | PID light ion (the rest of the principle can be customized) |
| Range selection | 0-100PPM (more range inquiry customer service) | Resolution | 0.1PPM |
| Sampling accuracy | ±3%F.S | Response time | T90<10S |
| Working temperature | -20~50 ℃ | Working humidity | 0-95%RH |
| Storage temperature | -20~50 ℃ | Preheating time | 10S |
| Working current | ≤50mA | Working air pressure | 86kpa-106kpa |
| Operating voltage | DC5V±1%/DC24±1% | Baud rate | 9600 |
| Installation method | Wall-mounted installation Pipe installation Ceiling installation Bracket installation | Warranty period | 1 year |
| Exterior dimension | 220*205*97（L*W*H）1.5Kg | Service life | 1-3 years |
| Protection level | IP66 waterproof splash and short time rain | Explosion-proof grade | E x d I IC T 6 |
| Receiving equipment | User computer, control alarm, PLC, DCS, DDC, etc. | ||
| Alarm mode | On-site sound and light alarm, external alarm, remote controller alarm, computer data acquisition software alarm, etc. | ||
| Alarm Settings | Standard configuration of two-level alarm, optional three-level alarm; alarm mode can be set: regular high and low alarm, interval control alarm | ||
| Connection cable |
① Select three-core shielded cable for 4 ~ 20mA and four-core cable for RS485. When the distance exceeds 1000 m (with a detector), the single wire diameter shall be ≥ 1.5mm, and the shielding layer shall be connected to the ground. ② wireless transmission: can be built-in LORA, Zigbeg module, short-range wireless transmission; external GPRS/4G module, remote data transmission to the cloud platform, can be viewed on the computer side and mobile phone side of the history, not limited by distance (optional) |
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| Optional accessories |
Normal temperature and high humidity pretreatment system, high temperature and normal humidity pretreatment system, high temperature and high humidity pretreatment system, high temperature and high humidity and high dust pretreatment system, pressure reducing valve, flow meter, chloroform gas measurement, 24VDC or 220AC sampling pump (sampling distance is 10 meters), vacuum pump (sampling distance is more than 40 meters), 24V switching power supply, 220V to 24V power adapter. Computer monitoring accessories: free upper computer software, USB to RS485 conversion cable, RS485 to network port converter if network transmission is required. Mounting bracket |
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Product Features of On-line Methyl Bromide Gas Concentration Detector
● Intrinsically safe circuit design, explosion-proof certification, secondary lightning protection, anti-static, lightning protection and anti-static capabilities exceed national standards, and resist high-intensity pulse surge current impact. High reliability and stability.
● Standard bus RS485 and 4 ~ 20mA standard signals are output at the same time, one group of relay switch output, optional frequency output 200-1000Hz, 1~5V output, wireless transmission (10-50km or unlimited distance). It can be wired or wireless remote real-time monitoring, upload data to mobile phones or transmit to the Environmental Protection Bureau, other monitoring centers, monitoring equipment, and monitoring computers through local area networks and the Internet, and monitor the concentration of the site in real time through free upper computer software or gas alarm controllers.
● Compatible with all kinds of secondary table, data acquisition module, PLC, DCS system, can directly drive the solenoid valve, fan, alarm and other equipment, can also drive the intermediate relay to drive high-power equipment.
● Standard infrared remote control, can be achieved in dangerous situations without open cover operation.
● 2.5 inch HD color screen (TF) shows real-time concentration, temperature and humidity.
● Automatic zero tracking to prevent drift, temperature compensation, multi-level calibration, can also meet the national standard and local and provincial metrology bureau standards in various regions.
Application Scenarios
Petroleum and petrochemical, chemical plants, smelters, steel plants, coal plants, thermal power plants, pharmaceutical research, pharmaceutical production workshops, tobacco companies, environmental monitoring, school research, building construction, fire alarm, sewage treatment, industrial gas process control, boiler room, Garbage treatment plant, tunnel construction, oil pipeline, gas filling station, underground gas pipeline maintenance, indoor air quality inspection, safety protection in hazardous places, aerospace, military equipment monitoring, etc.
On-line methyl bromide gas concentration detector interface display introduction
The instrument has a total of 3 buttons, namely "add/cancel", "function/confirm", "move right/down" (hereinafter referred to as "add" ("cancel"), "function" ("confirm"), "move right" ("move left")). The three key positions are as follows. Press the "Function" button.
Internal diagram of online methyl bromide gas concentration detector
On-line methyl bromide gas concentration detector can be used stand-alone
or connectionManagement control machine with the use of wiring diagram
| 4-20mA Wiring Definition Chart | RS485 Wiring Definition Chart |
 |
 |
Installation position of online methyl bromide gas concentration detector
According to the specific gravity and wind direction of the gas, the detector should be installed within one meter from the place where the gas may leak, so that the actual reaction speed of the detector is relatively fast. Otherwise, the concentration of methyl bromide gas or toxic and harmful gas at the place where the detector is installed may not exceed the standard, while the local gas at the leak point has exceeded the standard, but the detector and the host cannot alarm.
The height of the detector should be more than 30cm from the ground to prevent water from splashing in. In general, the detection of harmful gases with a specific gravity less than that of the air, the probe should be installed above the house or equipment; the harmful gases with a specific gravity greater than that of the air, the probe should be installed close to the ground. The probe of the detector shall be installed downward. If it is installed outdoors, a rain shield shall be installed above the detector.
Note: The detection range of each probe in the open area is 60 square meters, and factors such as gas diffusion, wind direction, temperature, humidity and regional closure should also be considered. Protection measures such as dustproof, waterproof and high temperature protection should also be considered during installation.
Installation Method
Users can design their own fixed way. However, care should be taken to keep the sensor face of the probe perpendicular to the ground. After the probe is fixed, remove the screws on the upper cover of the shell, and insert the shielded (three-core 3 × 1.5mm) transmission cable through the wire passage. It is recommended to use shielded soft core (3 × 1.5mm) cable and connect the cable to the terminal position. After checking that the wiring is firm, fix the cable and the upper cover of the housing.
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