的详细说明YEJ-101型矩形膜盒压力表：适用于锅炉通风设备对铜合金不起腐蚀作用的和中性、无爆炸危险的气体的微压和负压进行测量。 Detailed description of rectangular diaphragm pressure gauge YEJ-101 rectangular diaphragm pressure gauge: It is suitable for measuring the micro-pressure and negative pressure of gas which is not corrosive to copper alloy and neutral, non-explosive danger of boiler ventilation equipment. YEJ-121 rectangular contact diaphragm pressure gauge is suitable for measuring the micro-pressure and negative pressure of gas that is not corrosive to copper alloys and neutral, non-explosive danger of boiler ventilation equipment. It has double two-position adjustment (double wire Signaling) to achieve position adjustment or over-limit alarm.
的主要技术参数精确度等级：2.5级使用环境条件：-20～60℃(YEJ-121为0～50℃)，相对湿度不大于85%，且震动和被测介质的急剧脉动应对仪表正常工作无明显影响电气指标：(YEJ-121型)设定误差：小于全量程的2.5%,位式输出接点容量：交流无感负载3A220V 工作电源：AC220V 消耗电源：小于5W压力接口：Φ8(配用内径Φ6软管)采用膜盒作为测量微小压力的敏感元件。 The main technical parameters of the rectangular diaphragm pressure gauge are accuracy grade: 2.5. Operating environment conditions: -20 ～ 60 ℃ (YEJ-121 is 0 ～ 50 ℃), the relative humidity is not more than 85%, and the vibration and the measured medium are sharp. The pulsation response to the normal operation of the instrument has no obvious effect on the electrical indicators: (YEJ-121) Setting error: less than 2.5% of full range, bit output contact capacity: AC non-inductive load 3A220V Working power: AC220V Power consumption: less than 5W pressure interface : Φ8 (with inner diameter Φ6 hose) uses the capsule as a sensitive element for measuring small pressure. It is used to measure the micro-pressure and negative pressure of non-corrosive effects on copper alloys and non-explosive dangerous gases. It is widely used in boiler ventilation, gas pipelines, combustion devices and other similar equipment. The stainless steel capsule pressure gauge is made of stainless steel according to the pressure guiding system and the housing. It is used to measure the micro-pressure and negative pressure of various gaseous media in the process with high corrosion resistance. The production of stainless steel capsule pressure gauges is based on the structural features of the original capsule pressure gauges and is a micro-pressure gauge with corrosion resistance. It is applied to equipment such as boiler ventilation and gas pipelines, and measures the micro pressure and negative pressure of various gas media in the process with high corrosion resistance requirements. Accuracy level: 2.5 Measurement range: (kPa) 0 to 4; 0 to 6; 0 to 10; 0 to 16; 0 to 25; 0 to 40; 0 to 60; -4 to 0; -6 to 0;- 10 to 0; -16 to 0; -25 to 0; -40 to 0; -2 to 2; -3 to 3; -5 to 5; -8 to 8; -12 to 12; -20 to 20-30 ~ 30 Operating environmental conditions: -25 to 55 ° C, relative humidity not greater than 80%, resistance to working environment vibration: V · H · 3 weight: 0.5kg Structure principle: The meter consists of a measurement system (including connectors, corrugated membrane boxes, etc.) The transmission mechanism (including the pull-out mechanism, the gear transmission mechanism), the indicating component (including the pointer and the dial) and the housing (including the watch case, the ring and the watch glass). The working principle of the meter is based on the corrugated membrane box under the pressure of the measured medium, the free end of the corresponding elastic deformation, and then transmitted by the gear transmission mechanism and amplified, the pointer fixed on the gear shaft will be measured one by one The value is indicated on the dial. There is also a zero-adjusting device, which can easily adjust the zero position.
的测量范围在-80~60000Pa,但是要根据不同的压力量程选用不同的膜盒压力表，压力在-1000Pa~60000Pa时建议选用圆盘式膜盒压力表，如果压力在-80Pa时建议选用矩形膜盒压力表。 The measurement range of the rectangular diaphragm pressure gauge is -80 ~ 60000Pa, but different diaphragm pressure gauges should be selected according to different pressure ranges. It is recommended to use a disc diaphragm pressure gauge when the pressure is -1000Pa ~ 60000Pa. If the pressure is- It is recommended to use a rectangular capsule pressure gauge at 80Pa. Working position and environment; vertical installation of the instrument; working environment -25 ～ 55 ℃. Relative humidity is not more than 80%, and the surrounding environment does not contain harmful gases that corrode the instrument; the instrument is measured by the measurement system (including flange joints, corrugated diaphragm) The transmission instruction mechanism (including the connecting rod, the gear transmission mechanism, the pointer and the dial) and the casing (including the watch case and the bezel) are composed. The meter housing is a splash-proof structure with good tightness, so it can protect its internal mechanism from contamination. The working principle of the meter is based on the deformation of the elastic element (the diaphragm on the measuring system). Under the pressure of the measured medium, the diaphragm is forced to produce the corresponding elastic deformation-displacement. The link group is driven by the transmission mechanism and amplified. The pointer fixed on the gear will gradually measure the measured value on the dial. Indicate it. Advantages and disadvantages of rectangular diaphragm pressure gauge: 1. Good overload performance; 2. Linear; 3. Suitable for measuring absolute and differential pressure; 4. Small size and moderate price; 5. Can be used for viscous and slurry measurement disadvantages : 1. Poor seismic and impact resistance; 2. Difficult to maintain; 3. Low measuring pressure.