Model DT333-0700
4-Wire mV/TC Dual Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
- 22 -
http://www.acromag.com
- 22 -
https://www.acromag.com
Calibration (Optional)
Once you’ve configured your unit,
you are ready to install it in
the field, as the unit has already been factory calibrated. But if
you later encounter error that is out of specification, click the
Calibration
tab to display the Calibration control page shown at
left.
IMPORTANT:
The unit has already had its inputs, outputs, and
temperature reference channels factory calibrated with a high
level of precision. If you attempt to recalibrate, you could
degrade performance if
you don’t do it
properly, or you do it
using low grade equipment. Consider your decision to
recalibrate carefully.
Calibration of this any section of this model is a simple two-part
process initiated by simply clicking the Input, output, or
Temperature Reference
“
...
Instructions”
button to begin and
following the on-screen prompts.
CALIBRATION
–
Input
Wire your input signal source to TB1 (Channel 1) or TB3 (Channel
2). Before attempting input calibration at a channel, set the
nominal Input Range to calibrate
on the “
Configuration
” page
and make sure you write your selection to the unit by clicking
[Send I/O Config].
After selecting a channel and setting its nominal input range, click
[Input Cal Instructions]
to begin input calibration and enable the
Input [Zero] and [Full-Scale] buttons.
Click Input
[Zero]
and you will be prompted to input the
minimum signal of your nominal input range at TB1 or TB3. This
will be the range minimum for your T/C type/range selected
(calibration does not use scaled range zero, but nominal range
zero). Once you input the zero precisely, click the
[OK]
button
and follow the on-screen prompt to calibrate zero.
Click Input
[Full-Scale]
and you will be prompted to input the full-
scale value of your nominal input range at TB1 or TB3. This will
be the range maximum and varies with the T/C type/range
(calibration does not use scaled range full-scale, but nominal
range full-scale). Once you input full-scale precisely, click the
[OK]
button and follow the on-screen prompt to calibrate full-
scale.
CAUTION-Input Calibration:
Driving inputs outside of the
nominal input range of the unit will not be acceptable for
calibration of zero or full-scale. Since input levels cannot be
validated during calibration, incorrect signal levels will produce
an undesired output response.
