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E-mail
marketing@gassensor.com.cn
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Phone
13296672587
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Address
No. 3 Fenghuangyuan 3rd Road, Fenghuangyuan Industrial Park, Donghu New Technology Development Zone, Wuhan City, Hubei Province
Product Categories
Sifang Optoelectronics Co., Ltd
NMP gas leak alarm
NegotiableUpdate on 12/19
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Overview
The NMP gas leak alarm Gasboard-2063 is a high-performance gas leak alarm based on the non dispersive infrared principle (NDIR) independently developed by Sifang Optoelectronics. Suitable for detecting the concentration of central gas in drying equipment and exhaust pipes, the sampling instrument body and display part adopt an integrated explosion-proof structure design, which is convenient for installation and disassembly. At the same time, the instrument has the characteristics of automatic calibration, long-term maintenance free and long service life. It has industrial 4-20mA current output, RS485 external communication and concentration limit alarm output functions, and can be applied to complex and harsh high-temperature industrial environments.
Product Details
NMP gas leak alarmGasboard-2063 features:
Long lifespan, maintenance free, automatic calibration
The temperature of the gas being tested ranges from 0 to 160 ℃
Anti interference, good long-term stability
Integrated design, direct insertion into the furnace
Adopting a pressure resistant and explosion-proof structure, meeting the Ex db IIC T3 Gb explosion-proof rating
NMP gas leak alarmGasboard-2063 Technical Parameters:
Detection Principle |
Non dispersive infrared principle (NDIR) |
Detecting gas objects |
NMP (N-methyl-2-pyrrolidone) |
Concentration display |
7-segment LED (4-digit) |
Testing Scope |
0-99%LEL |
display resolution |
0.5%LEL |
sampling method |
Differential pressure inlet type inside the furnace |
Alarm setting value |
15% LEL~50% LEL (default 25% LEL, adjustable) |
External output |
Gas concentration signal/alarm contact |
contact method |
DC4-20mA (resistive load below 300 Ω), RS485 (default 9600 baud rate) |
Alarm accuracy |
±5% LEL@15 %LEL~50%LEL |
Alarm delay |
T90＜ 30s@15 %LEL~50%LEL |
Alarm contact capacity |
250VAC * 0.2A/30VDC * 1.5A (impedance load) |
alarm action |
auto-reset |
Working Voltage |
24VDC±10% |
Average working current |
＜1.0A（@25℃，24VDC） |
warm-up time |
≤30min |
Operating Temperature |
Tested gas temperature: 0-160 ℃ (usually) |
service life |
>5 years |
structure |
In furnace direct insertion type |
explosion-proof structure |
Explosion proof structure |
Explosion-proof rating |
ExdbIICT3Gb |
External dimensions/weight |
418mm * 178mm * 110mm/approximately 6kg |
Please refer to the official product technical specifications for the above functions and specifications.
Technical principle:
The tested gas exhibits strong absorption of infrared radiation at specific wavelengths, and its absorption intensity follows the Lambert Beer law. When a light wave corresponding to a characteristic absorption wavelength of a gas passes through the tested gas, its intensity will significantly decrease. The degree of intensity attenuation is related to the concentration of the gas, and the relationship between the two follows the Lambert Beer law.
Comparison of comprehensive advantages and disadvantages of the product:
