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Pressure thermometer is a spectrograph for measuring fluid pressure
2012-4-17 11:22:36

的介绍新一代液体压力式温度计以及由此开发的系列化测温仪表,克服了原仪表性能单一,可靠性差以及温包积大的缺点,并将测温元件体积缩小到原来的1/30或1/60,创造性地将传感器热电阻安装于测温元件内,实现了机电一体化的测温功能。 Introduction of pressure type thermometer The new generation of liquid pressure type thermometer and the series of temperature measuring instruments developed from it have overcome the shortcomings of the original instrument's single performance, poor reliability and large temperature envelope, and reduced the temperature measuring element volume to the original / 30 or 1/60, the sensor thermal resistance is creatively installed in the temperature measurement element, and the mechatronic temperature measurement function is realized. Formed a multi-functional serial temperature meter with a liquid pressure thermometer as the basic temperature measuring instrument for remote transmission, anti-vibration, anti-corrosion, electrical contact, and temperature signal transmission. Divided into two series, ordinary type and explosion-proof type.

是依据液体膨胀定律,即一定质量的液体,在体积不变的条件下,液体的压力与温度呈线形。 The pressure thermometer is based on the law of liquid expansion, that is, a certain mass of liquid, under the condition of constant volume, the pressure and temperature of the liquid are linear. The pressure and temperature of gas and steam also have a certain function relationship, so the scale of the pressure thermometer should be evenly divided. The pressure thermometer is composed of a temperature pack filled with a temperature-sensing medium, a pressure transmitting element (capillary) and a pressure sensitive element (spring tube). The pressure type thermometer has the characteristics of accurate temperature measurement, convenient installation and low cost. It is widely used in industrial control. There are two commonly used surfaces: 100mm and 150mm, which can be remotely controlled or displayed on the spot. It is extremely simple and convenient to use and the capillary can be made very long. Pressure thermometers are spectrographs that measure fluid pressure. We usually compare the measured pressure with a reference pressure (such as atmospheric pressure or other given pressure), so the relative pressure or pressure difference is measured.

分类:按办公原理不一样可分为:1、液柱式;2、弹性式;3、传感器式。 Classification of pressure thermometers : According to different office principles, it can be divided into: 1, liquid column type; 2, elastic type; 3, sensor type. 1. Liquid column types such as U-tube pressure gauges and row pressure gauges are based on hydrostatic principles to convert pressure signals into liquid column height signals. Water, ethanol or metallic mercury are often used as pressure measuring fluids. 2. The elastic type, such as the Boden tube pressure gauge, converts the pressure signal into a mechanical deformation of the elastic element, and outputs the signal in the form of a pointer to change the orientation. Such pressure gauges are often used in industrial systems. 3. The principle of the pressure sensor is to convert the pressure signal into some kind of electrical signal, such as the strain type, which changes the resistance through the deformation of the elastic element; the piezoelectric type uses the piezoelectric effect.