On-line Pre-treatment Monitoring System for Hydrogen H2 Gas at Plant Boundary of Chimney Pipeline
Category: Products Flue gas pretreatment system Simple Pretreatment Online Monitoring System
Key words: Products
Model: SK/MIC-7500-H2
Measurement object: Hydrogen
Product Description
Operation process
The sampled gas first passes through the filter, filters dust and impurities, and then passes through the sampling pump to control the flow rate of the extracted gas through the flowmeter (the flow rate of the flowmeter is generally controlled at 0.3~0.5L/Min.), Finally, the instrument is tested (the working environment of the instrument needs to be used in the working condition of -20 ° ~ 60 °).
Consumables
The service life of the sensor is about 1 to 3 years, which is a consumable, and the specific use time is determined according to the detection environment.
2. The color of the chip inside the filter changes and needs to be replaced. The service life is about 3 months, depending on the detection environment.
3. Sampling air pump about 1 year service life
Features
1. Detector detection principle: according to the demand range customization, and can provide customized products according to user needs, without tools to achieve sensor exchange, off-line calibration and zero self-calibration
2. A variety of signal output, which can be easily connected to PLC/DCS and other industrial control systems, can also be used as a stand-alone control (switch output, RS485 output, 4-20mA output)
3. Local alarm indication, integrated sound and light detector (optional)
4. The instrument has over-range and reverse polarity protection, which can avoid the danger caused by improper operation
5. Dust filter, filter dust, when there is water, stored with peristaltic pump for discharge
6. Sampling pump, the longest sampling distance can reach 100 meters, it is recommended to be within 20 meters
7. Flow meter, control the gas flow rate, avoid the gas flow too fast to wash the sensor.
Product parameters of simple hydrogen pretreatment online monitoring system
| 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 | Hydrogen gas | Detection principle | Electrochemistry |
| Range selection | 0-1000PPM (more range inquiry customer service) | Resolution | 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 |
| Instrument size | 220*205*97（L*W*H）1.5Kg | Service life | 1 to 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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Ordinary stainless steel box can be customized explosion-proof box
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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 hydrogen 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 hydrogen gas concentration detector
On-line hydrogen 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 |
 |
 |
Can be configured according to the needs of the seven-inch LCD touch screen
Pipe Description
There are 4 pipe connections:
One sampling air inlet;
2 water outlets, with a throttle valve on the water outlet, which is usually tightened and normally closed. Check regularly. If there is water in the water outlet pipeline, water can be discharged through the valve;
1 air outlet;
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