6850-001 Impact Meter
Installation Manual
DOC# 100850 • REV B (April 2018)
6850 connected
to an IT6810
The 6850 Impact Meter is designed for quick
check out or adjustment of Metrix Impact
transmitters, either on an operating ma
-
chine, or with the transmitter removed.
Simply connect the Meter to an Impact
transmitter, toggle the Power switch, and
select Pulse-Time, 4-20mA, or Peak Detect
mode. In Pulse-Time mode, the transmit
-
ter’s Threshold level (milli-volts), and Sam
-
ple Time (seconds) are displayed, and may
be adjusted while observing the changes.
Switching to 4-20mA mode displays the
current output directly, while Peak Detect
mode displays the peak vibration level, in
milli-volts, detected by the transmitter.
The Peak Detect mode is provided for
measuring and displaying the amplitude of
Impact peaks present at the measurement
location. Peak Detect mode is most useful
when “fine tuning” a transmitter for a par
-
ticular machine. An Impact Threshold Level
2X to 3X the base line PD level has proven to
provide good machinery protection moni
-
toring. While the Pulse Time is a function
of machine operating speed, calculated as
follows: 960 divided by machine RPM = the
Pulse Time (in seconds).
OVERVIEW