The Bebur AS-300 fixed combustible gas detector is a fixed flammable gas detector that can continuously detect the concentration of combustible gases in the ambient air online. The instrument adopts the catalytic combustion principle and can transmit the real-time gas data detected on site through 4-20mA signals or RS485 signals. It is a standard three-wire fixed combustible gas detector with on-site LCD display and plug-and-play sensor replacement, meeting the application requirements of different industries.
The Bebur AS-300 fixed combustible gas detector is a fixed flammable gas detector that can continuously detect the concentration of combustible gases in the ambient air online. The instrument adopts the catalytic combustion principle and can transmit the real-time gas data detected on site through 4-20mA signals or RS485 signals. It is a standard three-wire fixed combustible gas detector with on-site LCD display and plug-and-play sensor replacement, meeting the application requirements of different industries.
The industries such as petroleum, chemical, metallurgy, environmental protection, paper-making, municipal, biochemical medicine and water treatment.
●Built-in temperature compensation circuit for accurate measurement
● Designed with cover-free style , infrared remote control calibration , operation
●Cast aluminum shell , suitable for various industrial environments
●Easy to install and maintain , sensor replacement on site (plug and play)
● Long service life , low-temperature resistance , strong tolerance to sulfide and silane gas poisoning
●Standard three-wire 4-20mA signal output or RS485 output , compatible with DCS or PLC system
●Field level-2 sound and light alarms , relay output (with the external equipment such as external exhaust connected)
Principle of detection | Catalytic combustion |
Gas for detection | Combustible gases (see gas list for details) |
Repeatability | ≤±3% |
T90 reaction time | ＜30s |
Power supply | 24VDC |
Power consumption | <2.5w<> |
Polarization time | 24h |
Calibration | Every 4-8 months |
Reset | Every 3-6 months |
User interface | Infrared remote control |
Working temperature | -40 ° C-70 ° C (limit); -20 ° C-50 ° C (typical) |
Operating pressure | Standard atmospheric pressure ±10% |
Working humidity | 0-95%RH (no condensation) |
Output signal | Three-wire system 4-20mA , RS485 |
Display | Field LCD display |
Explosion-proof class | Ex db IIC T6 Gb/Ex tb IIIC T80℃ Db |
Protection grade | IP66 |
Standard configuration | Detector host;Audible-visual warning light;Remote control;Instructions |
Accessories installation | Mounting bracket、Rain cover |
Serial No. | Name | Standard range | Resolution |
1 | Combustible gas（Ex） | 0-100%LEL | 0.1 |
2 | Methane（CH4） | 0-100%LEL | 0.1 |
3 | Ethane（C2H6） | 0-100%LEL | 0.1 |
4 | Propane（C3H8） | 0-100%LEL | 0.1 |
5 | Isobutane（C4H10） | 0-100%LEL | 0.1 |
6 | Hydrogen（H2） | 0-100%LEL | 0.1 |
7 | Acetylene（C2H2） | 0-100%LEL | 0.1 |
8 | Cyclohexane（CH2(CH2)4CH2） | 0-100%LEL | 0.1 |
9 | Methanol（CH3OH） | 0-100%LEL | 0.1 |
10 | Ethanol（C2H6O） | 0-100%LEL | 0.1 |
11 | Isopropanol（C3H8O） | 0-100%LEL | 0.1 |
12 | Ether（C2H5OC2H5） | 0-100%LEL | 0.1 |
For more gas types, please contact local sales distributors .
Tel：+86-18001379750
E-mail：sales@bebur.net
Whatsapp：+86-18518487185
Skype：+86-18518487185
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