Measuring instruments Vernier calipers Measurement and calibration report ** Reason, 2-3 days to complete, the fastest day to issue the certificate.
Requirements for the calibration error of the common caliper of the measuring instrument:
1.The parallelism of the jaw is measured in the knife edge.
The parallelism of the measuring jaw in the knife edge does not exceed 001 mm。
Shenzhen instrument calibration.
2.Zero value error.
Measuring instrument vernier caliper:
1) The graduation value is 002 mm, the "zero" mark coincidence is required to be 0005 mm, the "tail" mark coincidence is required to be 0010 mm.
2) The graduation value is 005mm, the "zero" mark coincidence is required to be 0005 mm, the "tail" mark coincidence is required to be 0020 mm.
3) The graduation value is 0For 10 mm, the "zero" mark coincidence is required to be 0010 mm, the "tail" mark coincidence is required to be 0030 mm.
Measuring instrument with gauge caliper: the measuring instrument round ruler pointer is located in the direction of 12 o'clock, there is no difference of one index on the left and right, the position of the millimeter reading is not greater than the mark width, and the crimping line is not more than half of the mark width.
3.Variability of the indication.
1) The variability of the caliper value of the measuring instrument with meter caliper shall not exceed half of the index value.
2) The digital caliper of the measuring instrument does not exceed 001 mm。
Shenzhen instrument calibration.
4.Drift. The drift of the digital caliper of the measuring instrument is less than 1 index value within 1 hour.
5.Indication error.
The indication error of the general caliper of the measuring instrument is different according to the different indexing values, the measurement range is different, and the corresponding indication error requirements are also different, and the general trend is that the indexing value is large, the measuring range is large, and the indication error is also large.
1）0.01 mm，0.For the 02 mm indexing value, the indication error is 002 mm, in the range of 70 mm -200 mm, the indication error is 003mm, 200 mm -300 mm range, the indication error is 004mm, 300 mm -500 mm range, the indication error is 005mm, 500 mm -1000 mm range, the indication error is 007mm, 1000 mm -1500 mm range, the indication error is 0In the range of 11mm, 1500 mm -2000 mm, the indication error is 014mm。
Shenzhen instrument calibration.
2）0.For the 05 mm indexing value, the indication error is 0 in the range of 0 mm -200 mm05mm, in the range of 200 mm -500 mm, the indication error is 008mm, 500 mm -1000 mm range, the indication error is 0In the range of 10mm, 1000 mm -1500 mm, the indication error is 0In the range of 15mm, 1500 mm -2000 mm, the indication error is 020mm。
3）0.For 10 mm indexing value, the indication error is 0 in the range of 0 mm -500 mmIn the range of 10mm, 500 mm -1000 mm, the indication error is 0In the range of 15mm, 1000 mm -1500 mm, the indication error is 0In the range of 20mm, 1500 mm -2000 mm, the indication error is 025mm。
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