Rockwell Automation 1442 Eddy Current Probe System - Manual (Page 16)

16 Rockwell Automation Publication ICM-UM004C-EN-E - February 2014
Chapter 1 Installation
The characteristics of output (V) and gap (mm) are as shown in the graph below.
Speed Measurements
Assumes measurements are made with a 5 mm or 8 mm probe.
Figure 2 - Dimension of target (recommended for rotational speed measurement):
mm mils
Recommended dimension of
target (mm) A
≥ 6
A
≥ 236
B
≥ 7
B
≥ 275
C
≥ 2.5
C
≥ 98
D
≥ 15
D
≥ 590
Recommended set gap (mm) 1.0...1.5 39...59
D A
B
C
D D
A
C
B
C