Model DT333-0700
4-Wire mV/TC Dual Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
- 23 -
http://www.acromag.com
- 23 -
https://www.acromag.com
Calibration
…
CALIBRATION
–
Output
Wire your output monitor to the correct terminal,
voltage or current, for the channel output you wish to
calibrate. Set the nominal output Range to calibrate on
the “
Configuration
” page
and make sure you write your
selection to the unit by clicking
[Send I/O Config].
Select the Output Channel to calibrate, 1 or 2. Click the
[Output x Cal Instructions]
button to begin output
calibration and enable the Output [Zero] and [Full-
Scale] buttons.
Use the Output Course and Fine Adjustment controls to
drive the output to its precise nominal output zero (i.e.
0mA, 4.000mA, -10V, -5V, or 0V, depending on the
output range setting) as indicated by your output
meter. Measure this output level accurately, or
performance will be degraded. At the precise output
range zero, click Output
[Zero]
of the Calibration
Output section to calibrate the output zero.
Use the Output Course and Fine Adjustment controls to
drive the output to its precise nominal range full-scale
(i.e. 20.000mA, 5V, or 10V, depending on the output
range setting). Measure this output level accurately, or
performance will be degraded. At the precise output
range full-scale, click Output
[Full-Scale]
of the
Calibration Output section to calibrate the output full-
scale level.
If the output acts erratic or appears imprecise, you may
need to repeat input or output calibration for the
channel, being very careful to connect and select the
correct channel, take accurate measurements, and
adjust correct signal levels. For current outputs, if you
are measuring a voltage across an output load resistor,
make sure that you use the exact load resistance when
calculating the load current being measured.
CALIBRATION - Temperature Reference (T/C Inputs)
You must already have the Type J TC range accurately
calibrated for the channel to accomplish CJC calibration.
Click Temperature Reference Calibration
[Instructions]
to begin CJC reference calibration. Select Channel 1 or
Channel 2 reference. You will be prompted to connect
a TC Type J ice point reference to input 1 or 2
depending on the Channel. Follow the on-screen
instructions to complete CJC calibration.
