UPC Models

Description

For comparative measurements.

Specification

• Standard: EN ISO 3650
• Maximum permissible errors: Provided all the metrological conditions are met, the reliability of the comparator during direct steel gauge block measurement is expressed as follows: WITHOUT HIGH PRECISION OPTION (without calibration certificate) - Repeatability limit (with no effect due to external temperature): 0,025 μm - Measurement uncertainty: +/- (0,10 + 1,0 x L) µm (L in m) Condition involves the use of reference standards whose uncertainty is as follows: - U ≤ ± 0,030 μm when calibrating the comparator - U ≤ ± (0,05 + 0,5 · L) μm (L in m) when calibrating the gauge blocks WITHOUT HIGH PRECISION OPTION - Repeatability limit (with no effect due to external temperature): 0,015 μm - Measurement uncertainty: +/- (0,05 + 0,5 x L) µm (L in m) Condition involves the use of reference standards whose uncertainty is as follows: - U ≤ ± 0,015 μm when calibrating the comparator - U ≤ ± (0,02 + 0,2 · L) μm (L in m) when calibrating the gauge blocks
• Weight: UPC: 23 kg UPT (temperature module): 4 kg
• Function(s): Measuring configuration Two probes with mechanical contact with the measuring face to be probed are connected in sum measurement (function +A+B). Measuring points On the reference gauge block: at the centre of the measuring face (point R). On the gauge block to be measured: at the centre (point 1) as well as the four corners of the measuring face, each lying 2 mm away from the adjacent faces (points 2 to 5). The central length lc is determined by probing both points R and 1. For establishing lengths "at any point", the measurements shall be carried out at points R plus 1 to 5. The variation in length v is obtained from measurements taken at points 1 to 5.
• Included in delivery: On demand: TESA calibration certificate (SCS certificate for the temperature device)