Emerson Machinery Health PR 642 Series, Installation Manual

Page: 24 / 40

5.2 Measuring ranges and sensitivity
Sensor PR 6422 PR 6423 PR 6424 PR 6425 PR 6426
Nominal
measuring
range, static
measurement
s ±0,5 mm ±1,0 mm ±2,0 mm ±2,0 mm ±4,0 mm
Nominal
measuring
range,
dynamic, peak
− peak
(recommende
d)
25 ... 250 µm 50 ... 500 µm 100 ... 1000
µm 100 ... 1000
±m ---
Sensitivity for
42 Cr Mo 4 16 V/mm 8 V/mm 4 V/mm 4 V/mm 2 V/mm
Approximate
value for
nominal
distance at the
center point of
converter
output signal * approx. 0,8
mm approx. 1,5
mm approx. 2,7
mm approx. 2,6
mm approx. 5,5
mm
Basic air gap * approx.
0,15 ... 0,35
mm
approx. 0,4 ...
0,7 mm approx.
0,55 ... 0,95
mm approx. 0,5 ...
1,0 mm approx. 1,2 ...
1,8 mm
* With standard measuring ranges (not valid for use of extended measuring ranges)
The sensor PR 6423 corresponds to the API 670 / DIN 45670 standard.
Calibration: If no other material was stated, sensor and converter are adjusted on the
standard material (42 Cr Mo 4), refer to section
Measuring chain and material of
measuring target .
Technical data Installation Guide
January 2020 MHM-97857
24 MHM-97857, Rev 1.5