Which is the best stainless steel pressure gauge for ammonia? Let's understand the specific content below. First, let's briefly explain what these two installation methods specifically include. In fact, the on-site installation of stainless steel pressure gauges by Tianchang Mingxuan Instrument Co., Ltd. refers to the use of a pair of wires or buffer rods to directly connect the pressure gauge to the nearest pipeline; The so-called disk mounting usually refers to the connection from the position where pressure measurement is required to the console through a metal hose.
It should be noted that in the current market, stainless steel pressure gauges mainly include two categories, namely pneumatic and hydraulic. When installing these two types of instruments, the connectors used are different. Generally speaking, the term "one measurement" refers to the direct installation of instruments and media, usually indoors or outdoors.
The so-called secondary display instrument is basically installed on the control room panel. Therefore, when applied in practical work, in order to facilitate differentiation, we usually refer to on-site installed instruments as primary instruments for short, while panel mounted display instruments are referred to as secondary instruments. Generally speaking, the dial diameter of a circular stainless steel pressure gauge mounted on a disk is 150 mm.
The dial diameter of on-site indicating instruments is generally 100mm. In addition, if the working environment conditions are not ideal, such as the lighting conditions are not ideal, or if the installation location is high and the indication value is unclear, it is recommended to choose a stainless steel pressure gauge with a dial diameter of 200mm or 250mm.
When calibrating stainless steel pressure gauges, it is sometimes found that there are two different calibration results for instruments with smaller ranges during the calibration process. However, when encountering this situation, we should fully consider the factors affecting the working quality of these two types of stainless steel pressure gauges, or make appropriate corrections to the liquid column difference.
So why does this happen. Why do stainless steel pressure gauges of the same type and specification appear to have different inspection results at the user's site and at the manufacturer's site. So, which party's inspection results are correct. What exactly is the problem. Let's analyze the specific reasons together.
First of all, we found that the pressure of the instrument was relatively low during inspection. Generally, there are two factors that have a significant impact on the accuracy of low range stainless steel pressure indication inspection, namely, the working medium and the calibration temperature. Therefore, after inquiry, we learned that the user used a pressure gauge when testing the instrument, and the working medium used was transformer oil; The calibration was conducted in the workshop, where there is heating but no air conditioning, and the room temperature is estimated to be 15-160C.
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