Sensor Cable Guidelines
Entek 9000 Series Sensor Installation Guide 11
Cable length
The nomograph below provides a simple, graphical method for obtaining the expected
maximum frequency capability of an IEPE measurement system. The maximum peak signal
voltage amplitude, cable capacitance, and supplied constant current must be known or
presumed.
V
I
c
- 1
(Rate of Maximum
Output Voltage from
Sensor to Available
Constant Current)
Frequency (Hz)
f
max
= Maximum frequency given the following characteristics
C = Cable capacitance (pF) I
c
= Constant current level from power unit (mA)
V = Maximum output voltage from sensor (volts 10
9
= Scale factor to equate units
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