Ametek TR-2100, Operation Manual

Page: 68 / 105

TR-2100 User Manual 62
Accuracy Verification
12. The accuracy of the changed channel should now be checked with a stable input
source. This can be done quickly by setting the Full Scale Value (if voltage
or current) to any level you wish to use. To calculate your Full Scale Values,
use the following two formulas.
Voltage:
Value Scale Full RMS AC V Ratio PT
= ×
12 . 212
Current:
Ratio Scale Full Ratio CT Value Shunt al No
= × ×
20 min
13. To test the accuracy of the channel, input .707 V AC RMS into a Current input or
106.06 V AC RMS into a Voltage Channel (directly into the back to the
recorder). Note that these values are fifty percent of the maximum input we
can put into the channels. The value you read under Real Time Values (in
the DS32 Configuration screen) should be within 0.10% of the required
value. The required value should be 50% of whatever you calculated for
your Full Scale Value.
14. If the error is less than 0.5%, the full-scale value of a channel can be corrected to
adjust the value that is being read in the Real Time display, the Trigger
section, or a Record. This can easily be done without recalibrating the unit.
Using DS32 software, change the Configuration (Full Scale of any channel)
of the TR-2100. Note that the new configuration change must be downloaded
before it will take affect.
Value Scale Full config New Scale Full Current
record screen the on reading Actual
read should record screen the on value the What
.
/
/
= ×
15. If the error is more than 0.5%, then the channel in that unit should be recalibrated
using the MFR CALIBRATION program. Refer to Chapter 5 of this manual
for details about this procedure. Please note that the unit must be OFF LINE
before running the Calibrate program. This is very important, as the program
will not work correctly if the unit is left on-line.