The company's sales department often receives phone calls, and some users inquire about the vacuum drying oven, and how much Pa is reflected by the vacuum meter reading. Can it be displayed with intuitive numbers?
(1) "0" on the vacuum gauge of the vacuum drying oven means positive atmospheric pressure, and "-0.1" means absolute vacuum. The indicated value on the vacuum gauge does not indicate the absolute value of the vacuum degree, but only the relative value of the vacuum degree.
Conversion of vacuum; according to the scale of this table, the absolute value and relative value of vacuum
P = 1 Ã— 105 (1-Î´ / 0.1) P-absolute value of vacuum degree (Pa)
Î´- The absolute value of the scale of the vacuum gauge
Example 1: The indicated value of the table is O, then P = 1 Ã— 105 (1-O / 0.1) = 1 Ã— 105 Pa = 1 atmosphere
Example 2: The indicated value of the table is 0.1, then P = 1 Ã— 105 (1-0.1 / 0.1) = 0 Pa is absolute vacuum.
(Absolute vacuum does not exist)
Example 3: The indicated value of the table is 0.08, then P = 1 Ã— 105 (1-0.08 / 0.1) = 2 Ã— 104 Pa
The vacuum degree of the product mainly depends on the performance of the matching vacuum pump.
The conversion of vacuum measurement unit is as follows:
0.1Mpa = 1 Ã— 105 Pa = 760mmHg = 1 atmosphere
1 Torr = 1mmHg = 133.33Pa
2 Torr = 0.00026666Mpa â‰ˆ267Pa
(2) The vacuum gauge reading of the vacuum drying oven can be displayed with intuitive numbers. But the price is relatively expensive, generally applicable to scientific research institutions. There are four vacuum drying oven models provided by Beijing Yashilin, the corresponding models are: DZF-6020, DZF-6050, DZF-6090, DZF-6210,
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