ETH-messtehnik GMV2-K, Руководство по эксплуатации

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ETH-messtechnik gmbh D-74415 Gschwend P.O. 16
Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0
Subject to change without prior notice
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7.4 Speed measurements
This measuring mode is a variation of the tracking measurement and is not a separate operating mode!
It is only a function in its own right in "Menu-> Measure-> Track-> Speed" (parameter set no. 0). During parameter set
programming, speed measurement is activated by selecting tracking measurement without angle measurement and finally
starting speed measurement with "yes". You can select between 60 and 360 pulses per revolution: this allows you to record
the speed for torque transducers with angle measurement.
Notes:
• The speed is determined for the duration of a second.
• Maximum speed: 30, 000
-1
• Accuracy: ±1 digit;
7.5 Power measurement
This mode is an extra function under tracking measurements and is not an operating mode in its own right!
It is only a separate function under “Menu-> Measure-> Track-> Power” (parameter set 0).
Power measurement can be started when programming the parameter set after speed measurement has been enabled.
Selecting the format determines the maximum power that can be displayed. If the scale range is exceeded, “-----” is
displayed.
Note:
• The accuracy of the power measurement function is a function of the accuracy and resolution of the torque and speed
measurements.
• Since the speed per second is measured, additional measurements errors may occur from the time shift during periods
of rapid speed changes.
A sufficiently large filter should be used as a remedial measure here
.
7.6 Peak measuring
This measuring mode is mainly used in screwing technology. Not only does it allow the largest occurring torque to be
detected, but also offers numerous functions for assembly automation: time-based measuring, screwdriver control,
OK/NOK assessment with setpoint values and automatic storing and erasing of measured values. The status of the
measurement is shown to the left on the bottom of the screen. See Sec. 2.2, page 7.
Explanation of symbols:
*
new measurement, before start-up suppression
t
start-up suppression is running, no measurement
1
ready for measurement, peak storage
<
angle trigger exceeded, angle counting operative
0
shutoff activated
X
Measurements stopped (
“
after time
”
terminated) / bend detected on torque wrench
!
error condition, device not ready for measurements
-
device not ready (zeroadjust, etc.)
The adjustable parameters are explained in sec. 9.8 "Parameter set". The time-based sequence is shown in sec. 10.1.
7.7 Torque wrench measurements
This operating mode has been specially designed to check the torque values of torque wrenches.
Only clockwise
measurements can be made.
The peak torque until the yielding point is reached is displayed. Any further increase in
torque after this point has no effect on the measurement results. Due to the mechanical properties of the wrench,
the
yielding torque can only be determined precisely by slowly and smoothly operating the torque wrench
. Status “1”
–
indicating that the device is ready “
–“
is displayed before the measuring process starts. If a bend is detected, “X” is output
as status. The transducer should be selected, so that the minimum wrench torque to be measured is at least 2% of the
transducer full scale value. If a parameter set is programmed, all memory settings such as erasure time can be made.
Note:
•
Peak measuring has to be used for torque wrenches not having any torque drop
•
The angle measurement is always de-activated here.