Capsule pressure gauge

product manual:

       1. Product introduction

       The bellows pressure gauge is called a bellows pressure gauge because its pressure sensitive element is composed of two wave-shaped metal diaphragms. It is different from ordinary pressure gauges in that it can measure a relatively small pressure, so it is It is called a micro pressure gauge, and Taiwan calls it a water column gauge or a micro pressure gauge. It is also called a gas pressure gauge because it is usually used in gas equipment and gas pipelines. The pressure sensitive element of this type of mechanical pressure gauge is usually composed of two circular wave-shaped metal diaphragms connected together, and there are also single diaphragm structures. The material is usually copper box gold, such as phosphor copper, beryllium copper For special working environment or special pressure medium, stainless steel or other alloy metal is usually used. Stainless steel usually uses SUS304 type or SUS316 and SUS316L type.

       The working principle of the bellows pressure gauge is to measure the pressure of the medium acting on the inside of the bellows cavity. The resulting elastic deformation and pressure are usually linear. The deformation amplitude of the pressure sensitive element depends on the size of the medium pressure and can be used to indirectly measure the medium. pressure. The pressure value is transmitted to the terminal indicating device (pointer and dial) through gears and connecting rods for display. The bellows pressure gauge is generally used to measure the pressure of gas and the energy to measure the micro pressure. The range and measurement accuracy usually depend on the size of the dial (the size of the bellows) and the material of the pressure sensitive component. Micro pressure gauges usually have The pressure protection device can prevent instrument damage caused by excessive pressure to a certain extent, but its function is limited and cannot rely on this function. You must pay attention when selecting the range to avoid unnecessary losses. When several capsule sensitive components are stacked together, they will produce a larger transmission force to measure the extremely small pressure. The measurement range of the capsule pressure gauge is 0~2.5mbar to 0~1bar, and the measurement accuracy is in 0.1~5 level. Because of the different altitudes in various regions and the different working environment temperature of the instrument, the pressure indicator is extremely sensitive, so the pointer will not be at 0 position. The micro pressure gauge is equipped with a 0 adjustment device, which can be suitable for various working environments.

       Due to the unique structure of the bellows pressure gauge, it will be affected by gravity and tension when measuring liquids, and the accuracy will be greatly reduced. In theory, the bellows pressure gauge is not suitable for measuring the pressure of liquids. If necessary, it must be measured. For liquids with low pressure, please contact our company's technical department, we will serve you wholeheartedly.

       2. Technical parameters

       3. Features

       1. The overpressure prevention structure is adopted, which can effectively prevent damage to the instrument caused by overpressure and prolong the life of the instrument.

       2. The instrument is equipped with a zero adjustment device, which can effectively ensure that the pressure gauge can be used in all regions and can be adjusted to zero at any time.

       3. Different shell materials can make the bellows pressure gauge have a wide range of use space, eliminating the constraints of the working environment on the use of the pressure gauge.

       4. Flexible installation method, easy to disassemble. The bright appearance makes the equipment display value even more.

       5. Numerous pressure ranges can better meet customer requirements.

       6. A variety of capsule materials are available.

       Four, appearance structure

       Five, selection

       ※Ordinary bellows pressure gauge is used to measure the tiny pressure of gas or vapor that is not corrosive to copper and copper alloys.

       ※The diaphragm vacuum gauge pressure gauge is used to measure the tiny negative pressure of gas or vapor that is not corrosive to copper and copper alloys.

       ※The diaphragm pressure vacuum gauge is used to measure the tiny positive and negative pressures of gases or vapors that are not corrosive to copper and copper alloys, and can indicate both positive and negative pressures on the same dial.

       ※Stainless steel bellows pressure gauge is suitable for corrosive gas medium suitable for stainless steel component detection and harsh external corrosive environment or unconventional working environment such as outdoor, open air, high temperature and high humidity, etc., to measure the tiny pressure of gas or steam.

       ※Electric contact bellows pressure gauge is used to measure the tiny pressure of various non-explosive gas media and need to realize automatic control and signal (alarm) purpose for the pressure system under test (control).

       Six, application

       The micro pressure gauge produced by our company is made with advanced technology and sophisticated technology. It is widely used in the air pressure display at the end of the pipeline. It is suitable for measuring the micro pressure and negative pressure of air and gases that are not corrosive to copper alloys. The products are used in gas combustion equipment, painting systems and various industrial gas heating systems, gas and natural gas pipeline engineering, medium and high pressure bellows pressure gauges are also suitable for painting equipment and spraying machinery, air pipelines, gas pipelines, combustion devices and other similar Equipment, such as building surge tanks, natural gas surge stations, gasification stations, burners, boilers, ovens, ovens, kitchen utensils and other industrial equipment gas measurement and display instruments, sometimes also used in switch cabinets in the power industry, precision The type micromanometer can also be used to measure the atmospheric pressure during mountaineering. It can be used as an altimeter to judge the altitude based on the change of atmospheric pressure, and the weather conditions can be estimated based on the change of atmospheric pressure.

       Seven, use and maintenance

       ⑴The meter must be vertical: use a wrench to tighten it during installation, and not force the case to be twisted; collisions should be avoided during transportation.

       ⑵The temperature of the surrounding environment should be -25~55℃.

       ⑶The working environment vibration frequency is less than 25HZ, and the amplitude is not more than 1mm.

       ⑷During use, because the working environment temperature is too high or because of the atmospheric pressure difference and temperature difference between the place of manufacture and the place of use, the indicator value does not return to 0 or the value is out of range. Please adjust it to 0 before use.

       ⑸ The scope of the instrument should be between 1/3 and 2/3 of the upper limit.

       ⑹When measuring corrosive gas media or high-temperature media, please pay attention to use all stainless steel materials and use safety glass mirrors.

       ⑺The instrument should be verified frequently (at least once every three months)

       ⑻A meter for measuring corrosive media is required, and the required conditions such as media material should be indicated when ordering.