|product name:||CH4 gas probe|
|Measurement object:||Methane in the air|
Methane, chemical formula CH4, is the simplest hydrocarbon (tīng, hydrocarbon), the molecule is a regular tetrahedral space configuration, the C-H bond energy is 413 kJ / mol, and the H-C-H bond angle is 109 ° 28 ′. The structural formula of methane only indicates the connection of atoms in the molecule, and it cannot truly represent the relative position of each atom in space. Methane is a colorless, flammable and non-toxic gas under standard conditions. Methane is widely distributed in nature and is one of the main components of natural gas, biogas, pit gas, and gas. It can be used as fuel and raw materials for the production of hydrogen, carbon monoxide, carbon black, acetylene, hydrocyanic acid and formaldehyde.
. 响应速度快，测量精度高，稳定性和重复性好等优点, 并兼容各种控制报警器, PLC, DCS等控制系统, 可以同时实现现场报警预警和, 4-20mA或者RS485标准信号输出,完美控制继电器和电池阀; 高精度显示各项技术指标和气体浓度值; 同时具有多重电路保护功能，是功能实用，操作方便的甲烷气体探头 Imported electrochemical sensors and high-speed processing technology . Fast response speed, high measurement accuracy, good stability and repeatability, etc., and compatible with various control alarms, PLC, DCS and other control systems, can simultaneously achieve on-site alarm and warning, 4-20mA or RS485 standard signal output, perfect control of relays and battery valves; high precision display of various technical indicators and gas concentration values; at the same time, it has multiple circuit protection functions, is a practical and convenient methane gas probe
1）原装进口传感器，自动温度补偿、零点漂移及满量程漂移补偿. ( 1) Original imported sensor, automatic temperature compensation, zero drift and full scale drift compensation.
2）防高浓度甲烷气体冲击的自动保护及传感器故障自检功能. ( 2) Automatic protection against high-concentration methane gas impact and sensor fault self-test function.
3）电路防护设计，大大降低安装和使用过程中的故障率. ( 3) Circuit protection design, greatly reducing the failure rate during installation and use.
4） 全量程范围温度数字自动跟踪补偿，保证测量准确性 . ( 4) Full-range temperature digital automatic tracking compensation to ensure measurement accuracy .
5） 温度补偿、多级校准，能同时符合国标和各个地区 地方、省级计量局标准. ( 5) Temperature compensation and multi-level calibration can meet national standards and local and provincial metrology bureau standards at the same time .
6）仪器配置红外遥控器，通过遥控器实现全菜单操作，无须开盖，简单方便 ( 6) The instrument is equipped with an infrared remote control, which enables full menu operation through the remote control, without the need to open the cover, simple and convenient
0-10、50、100、200、500、1000、2000、50000PPM等（详细量程请联系在线客服） Detection range: 0-10, 50, 100, 200, 500, 1000, 2000, 50000PPM, etc. (For detailed ranges, please contact online customer service)
Minute Distinguish 0.1ppm、0.01PPM、1PPM （根据量程和传感器而定） Rate: 0.1ppm, 0.01PPM, 1PPM (depending on range and sensor)
液晶显示 Display mode: LCD display
扩散式、流通式、泵吸式可选 Detection method: diffusion type, flow type, pumping type are optional
① 4-20mA信号：16位精度4-20mA输出芯片，传输距离1Km Signal output: ① 4-20mA signal: 16-bit precision 4-20mA output chip, transmission distance 1Km
② RS485 signal: using standard MODBUS RTU protocol, transmission distance 2Km
③ Voltage signal: 0-5V, 0-10V output, can be set by yourself
④ Pulse signal: also known as frequency signal, adjustable frequency range (optional)
⑤ Switch signal: 2 sets of relays as standard, optional third group of relays,
① 电缆传输：3芯、4芯电缆线，远距离传输（1-2公里） Transmission method: ① Cable transmission: 3 core, 4 core cable, long distance transmission (1-2 km)
② GPRS transmission: built-in GPRS module, real-time remote transmission of data, (optional)
用户电脑、控制报警器、PLC、DCS、等 Receiving equipment: user computer, control alarm, PLC, DCS, etc.
现场声光报警、外置报警器、远程控制器报警、数据采集报警等 Alarm method: live sound and light alarm, external alarm, remote controller alarm, data acquisition alarm, etc.
标准配置两级报警，可选三级报警；可设置报警方式：常规高低报警、区间控制报警 Alarm setting: standard configuration of two-level alarm, optional three-level alarm; alarm modes can be set: conventional high-low alarm, interval control alarm
3/4″NPT内螺纹、1/2″NPT内螺纹，同时支持2种电器连接方式 Electrical interface: 3/4 ″ NPT internal thread, 1/2 ″ NPT internal thread, and supports 2 electrical connection methods
压铸铝+喷砂氧化/氟碳漆，防爆防腐蚀 Housing material: die-cast aluminum + sandblasted oxidation / fluorocarbon paint, explosion-proof and anti-corrosion
24VDC（12～30VDC） Working power: 24VDC (12 ～ 30VDC)
183×143×107mm(L×W×H）1.5Kg(仪器净重) Dimension and weight: 183 × 143 × 107mm (L × W × H) 1.5Kg (net weight of the instrument)
Methane gas probe applications:
Petroleum and petrochemical, chemical industry, smelting plant, steel plant, mining plant, thermal power plant, pharmaceutical production workshop, environmental monitoring, fire alarm, sewage treatment, gas station monitoring, security inspection, inspection and quarantine, etc. It is mainly used to monitor indoor and outdoor methane gas leaks. When there is a methane gas leak, the detector will detect the leakage information and display the concentration of the leaked methane gas in real time, and timely transmit the relevant data to the controller. When a certain concentration is reached, The controller will prompt the user that a gas leak has been detected, and the associated equipment and related personnel take relevant measures, which are important instruments to ensure the safety of the environment, production, and life and property. If you want to know more detailed product information and related materials, please feel free to contact us!