Transducer
Calibration (cont.)
The display will now show the mv/v signal of the transducer at full range. The default is 2.000 and the
mV/V range can be anywhere between 1.000 and 4.000 mV/V. Enter the actual value by pressing the
Scroll up key to change the value of the blinking digit. Press the Scroll Right key to select a different
digit. When the value is correct, press the Enter key.
Brushless Transducer:
The first digit may also be changed to 5 and 5.000 is the only permitted value. Only set the first digit to 5
if you are calibrating a Brushless transducer (BLRTSX type). These BLRTSX transducers output 5 V at
full range. If you are calibrating a Brush-Less transducer you must use the True Calibration method.
After entering the mv/v signal the display will show “FAST CAL”. If you do not want to use dead weights
press Enter and the TorqueMate® Plus will use the mv/v signal you entered as the full scale span signal
of the transducer.
If you are going to use dead weights press the Scroll Up key to show “TRUE CAL”. Press Enter to
select TRUE CAL.
After selecting TRUE CAL, the display will show “- P0”. This means that the tester is “waiting” for you to
enter Point Zero in the negative (counterclockwise) direction (also referred to as the negative zero offset
of the transducer).
Exercise the transducer three times to full scale in the CCW direction and wait 30 seconds with no load
for the transducer to stabilize. Press the Scroll Right key (not the Enter key) to accept the negative zero
point (offset).
The TorqueMate® Plus will now show “- P1”. This means that it is waiting for the input for the first point
in the CCW direction, always 10% of the full scale range of the transducer. Place the appropriate
weights on the calibration arm and let the weight stabilize.
21
Note: mv/v Input
If you do not know the full scale mv/v signal of the transducer then
select 2.000 and use dead weights to calibrate the transducer. Contact
the manufacturer of the transducer to determine the actual mv/v. The
mv/v value will always show 2.000 even if programmed at a different
i
i
Note: Zeroing Transducer
All transducers have a shift in the “zero” or “zero offset” point when
going from one direction to the other. As a result, it is important to
exercise the transducer in the direction to be calibrated to make
sure the TorqueMate® Plus uses the proper zero point for the asso-
ciated direction. This is a normal characteristic of transducers.
