Are there pressure gauge dials with a diameter of 70mm?
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Are there pressure gauge dials with a diameter of 70mm? Why is the actual measured diameter of the dial on some pressure gauges a decimal value, such as 66 mm, 73 mm, and so on?
The dial diameter of some pressure gauges may have decimal values, such as 66 mm, 73 mm, etc., due to measurement and manufacturing errors. The diameter of the gauge dial is usually designed according to standard sizes, but due to differences in production and usage conditions, certain deviations may occur. These deviations are usually within acceptable limits and do not affect the normal operation of the pressure gauge. .
The diameter of the pressure gauge dial comes in standard and standardized sizes, such as 100, 200, etc. This is done to ensure standardized installation. If a special size is required, it is possible to change the dial diameter or arrange for a custom design, but the cost will be higher.
Find some **manufacturers’ standards; Japanese manufacturers’ dial series: 60, 75, 100, 150. American manufacturers: 40, 50, 63, 100, 160. German manufacturers: 40, 50, 63, 80, 100, 160. The standard specifications for pressure gauges in China are 40, 60, 100, 150, 200, and 250; if these values are not applicable, the supplier and buyer can agree on an alternative arrangement. You can check the manufacturer of the on-site pressure gauge and the standards it complies with. Unit: millimeters.
The values listed above are the diameters provided by manufacturers in various countries, and these are all nominal sizes. You need to pay attention to both the dimensions you measure and the areas where you take the measurements; the dimensions you obtain on-site (as mentioned earlier) are the actual dimensions. Take a look at the picture. Compare them.