Ams Ez 1000 Converter With Zener Barriers - Emerson Machinery Health AMS EZ 1000 Operating Manual

Operating Manual
MHM-97884
Figure 7-4: Reduced static distance measurement
A. Output voltage
B. Nominal output voltage range: -2.0 V to -18 V
C. Reduced output voltage range: -2.0 V to -16 V
D. Beginning of the measuring range
E. End of the measuring range when using an Ex isolation transmitter
F. Nominal end of the measuring range without Ex isolation transmitter
G. Time
Dynamic distance measurement
Ensure that the distance between sensor and measuring object is adjusted so that a
connected multimeter reads a DC voltage of approximately -10 V (see
measuring chains at the
at high vibration amplitudes.
7.3.1

AMS EZ 1000 Converter with Zener barriers

Zener barriers, such as listed below, can be used to install the AMS EZ 1000 Converter in
accordance to the approvals in hazardous areas, as specified in
installation.
• Stahl 9001/00-280-020|085-101 (U
• Stahl 9002/00-260-138-001 (U
• MTL 7796 (U
The maximum voltage U
Converter and a measuring card, has an influence on the output signal of the converter. An
output signal of less than -16 V causes Zener barriers with a maximum voltage of U
to clip the output signal. Zener barriers with a maximum voltage of U
output signal at approximately -18 V, so the nominal output of -18 V of the AMS EZ 1000
Converter can be reached. See
MHM-97884, Rev. 1.8
Hazardous location installation – application notes
machine). This standard adjustment avoids clipping of the signal
0
= 26 V)
0
= 28 V)
0
of the Zener barrier, installed between an AMS EZ 1000
0
Figure 7-5.
Hazardous location
= 28 V)
October 2023
Adjustment of
= 26 V
0
= 28 V clip the
0
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