Processing method that affects the accuracy of pressure gauge measurement - News - Global IC Trade Starts Here Free Products

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First, the impact of temperature

Pressure gauge pressure is the effect of pressure to deform the spring bend. If the temperature of the medium entering the spring bend is high, the effect of the temperature will also cause the bend to deform. Moreover, the high temperature medium acts on the spring bend for a long time, and the bend is permanently deformed. All of this will have an adverse effect on the measurement. The prevention method is to install different types of trap pipes between the pressure gauge and the drum to accumulate condensed water and prevent the steam from directly entering the spring bend.

Second, the impact of freezing and vibration

The pressure gauge is installed outside the boiler and is greatly affected by external conditions. If the outside temperature is too low, frozen, or from various vibrations inside the boiler body and pressure gauge, it will affect the sensitivity and accuracy of the gauge pointer. Precautionary measures: First, install the insulation device; second, install the buffer device. For example, the three-way cock is an anti-shock device.

Third, the impact of overload

Elastic components such as spring bends and hairsprings in pressure gauges, such as often at or near the limit. Long-term work can lead to weakening or loss of elasticity, and even permanent deformation. If the gauge pointer is often close to or greater than 2/3 of the dial's full scale, it will be detrimental to the long-term operation of the gauge. The way to prevent it is, when the pressure gauge is selected first, the range should be selected reasonably, and the working pressure is at 1/2 of the range. Secondly, it is necessary to strictly prevent overpressure operation of the boiler.