主要用于机车车辆上用来测量液压系统或储气缸的压力，也可用于对铜合金、锡铅合金钎焊无腐蚀性，非结晶和凝固的各种介质的压力测量。 YZS-102 double needle pressure gauge is mainly used for measuring the pressure of hydraulic system or storage cylinder on rolling stock. It can also be used for non-corrosive, non-crystalline and solidified pressure of copper alloy and tin-lead alloy brazing. measuring. The two-needle pressure gauge can measure two same or different pressures at the same time (the difference between the two should generally not be greater than 1/3 of the limit on the scale range).
The so-called double needle pressure gauges (Double needle pressure gauges) refer to double-needle double-tube pressure gauges, which is a more typical special pressure gauge. This instrument is provided with two interfaces of the measured objects, which can be connected to the two measured objects at the same time, and the pressure of the two measured objects is indicated by the color separation pointer at the same time. It is especially suitable for two measurement objects that require simultaneous reading comparison. The internal structure of the dual-needle pressure gauge is also very characteristic. It cleverly combines the two measuring mechanisms organically and is independent of each other. These two independent measuring mechanisms each drag their own pointers to indicate their respective pressures on the same dial. The comparison error is effectively minimized from the indicating device, and the comparison reading accuracy of the two measured objects is obviously improved.
，是一种双针双面单管压力表。 There is also a two-needle pressure gauge , which is a two-needle double-sided single-tube pressure gauge. The double-sided pressure gauge is designed and manufactured to meet the requirements of multi-directional readings. It has only one interface for the measured object, a set of measuring mechanisms and a special transmission amplification mechanism, and two sets of indicating devices are distributed on both sides. The transmission magnification mechanism of this double-sided pressure gauge is unique in design, which allows you to obtain the same reading effect on both sides. Diaphragm pressure gauges (Isolation membrane pressure gauges) is another type of pressure gauge for measuring specific media. Diaphragm pressure gauge is a combination of pressure gauge and isolation device. The material used to make the pressure gauge has nothing to do with the measured medium, because the pressure gauge itself does not touch those specific media. It is an indirect measurement of the pressure of a specific medium in an isolated state. Therefore, this pressure gauge has many excellent characteristics. Its accuracy can be higher, and its range of adapting to media objects can be wider, as long as the corresponding dielectric isolation diaphragm is selected. Diaphragm pressure gauge provides a variety of connection structure types, such as: screw connection, flange connection and so on. The flange connection includes flat flange, angle flange and I-shaped flange. Since the diaphragm pressure gauge is a combined pressure gauge, it can provide a very flexible combination method, which greatly increases its selection space.
Vibration-resisting pressure gauges is a kind of pressure gauge that can work normally under the environment of vibration and medium pulsation. The housing of this vibration-resistant pressure gauge is filled with damping fluid to relieve external environmental vibration. A damper is provided at the interface. The pulsating medium is filtered by the damper before entering the elastic sensitive element to ensure the vibration-resistant pressure gauge. Normal work and accurate readings by the observer.
Resistance to shake pressure gauges is a kind of pressure gauge suitable for working in environments with strong vibration. It has some vibration resistance mechanism of vibration resistance pressure gauge, and further improves its seismic performance from the aspect of structural design. In order to meet the higher vibration resistance requirements, most of the anti-vibration pressure gauges adopt a turntable type to increase the damping performance of the indicating mechanism and maximize the balance of the moment of inertia of the indicating component under the vibration state. In layman's terms, during the work process, the pressure of the medium is indicated by the rotation of the dial. There are also diaphragm-type and pointer-type seismic pressure gauges, whose seismic performance is slightly lower than that of turntable seismic pressure gauges.
结构原理 Structure principle of double needle pressure gauge
1. The meter consists of two sets of independent measuring systems and indicating devices.
2. The working principle of the meter is based on the elastic deformation of the elastic element (spring tube in the measurement system). That is, under the pressure of the measured medium, the ends of the two spring tubes are forced to have corresponding displacements. The levers are used to drive and magnify the transmission through the wheel transmission mechanism. The red and black pointers fixed on the wheel shaft will separate the two The measured value is indicated on the dial.