a级国产乱理伦片在线观看al,久久亚洲AV成人无码国产最大,欧美日韩精品一区二区视频,AV激情亚洲男人的天堂,婷婷精品国产亚洲AV麻豆不片,国产未成满18禁止免费看,人人超人人超碰超国产,羞羞影院午夜男女爽爽应用,白丝爆浆18禁一区二区三区,国产SUV精品一区二区

Introduction

Thermal gas mass flow meter contains two platinum resistance temperature sensors. The thermal principle operates by monitoring the cooling effect of a gas stream as it passes over a heated sensor. Gas flowing through the sensing section passes over two sensors one of which is used conventionally as a temperature sensor, whilst the other is used as a heater. The temperature sensor monitors the actual process values whilst the heater is maintained at a constant differential temperature above this by varying the power consumed by the sensor. The greater the gas velocity, the greater the cooling effect and power required to maintain the differential temperature. The measured heater power is therefore a measure of the gas mass flow rate.

Features

• Measuring the mass flow or volume flow of gas

• Do not need to do temperature and pressure compensation in principle?with accurate measurement and easy operation.

• Wide range: 0.5Nm/s～100Nm/s for gas. The meter also can be used for gas leak detection

• Good vibration resistance and long service life. No moving parts and pressure sensor in transducer, no vibration influence on the measurement accuracy.

• Easy installation and maintenance. If the conditions on site are permissible, the meter can achieve a hot-tapped installation and maintenance. (Special order of custom-made)

• Digital design, high accuracy and stability

• Configuring with RS485 or HART interface to realize factory automation and integration

Technical parameters