TRANSDUCER METHOD OF CALIBRATION FOR THE THREE POINT BORE GAUGE


CALIBRATION PROCEDURE

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General Description

Methods of Operations

Transducer methods of calibration
Slip Gauge methods of Calibration
Calibration procedure for the True Cal Unit

CONSIDER THE CALIBRATION OF 50-60mm HEAD.


USE THESE INSTRUCTIONS IN CONJUNCTION WITH INSTRUCTION SHEET REF25003 & GENERAL NOTES.

  1. Transducer and digital readout system can be used as length standard for calibration of three point micrometer.

    The range of transducer must be 1.5 times the range of the head.

    i.e. 10mm head range will require 10x1.5 = 15mm range of transducer.

    & 25mm head range will require, 25x1.5 ≈ 38mm range of transducer.



  2. When using the transducer method, the slip gauges used are of nominal value only and need not be calibrated.


    Slip gauges are primarily used for conveniently locating positions on which calibration is to be carried out.


  3. To obtain calibration point, the Ro (readout reading) is divided by 1.5 (Ro/1.5) each time to calculate R2. R2 is reading at calibration point.


  4. Deviation is calculated from R2-R1.


  5. After setting up zero point, the subsequent readings are taken by reducing the size of Slip block by suitable amount and Slider anvil is clamped in this position. Take micrometer readings (R1) and repeat process. Refer table 2.
1 22/04/07 INFOR. ISSUE M.S.S
ISSUE No. ISSUE. DATE MOCIFICATIONS APP.BY
INSTRUCTION SHEET REF 25004 1 0FF 1




ALL READINGS IN (mm)
Reding No Slip Block Size
(Calibrated)
Readout Reading
Ro
(Ro/1.5= R2)
R2
Deviation
(R2-R1)
1 20 0.000 0.000
2 17    
3 14    
4 11    
5 8    
6 5    
Pl. note: The illustrations and specificatins may be changed without prior notice.

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