Model TT339-0700
4-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
[
23
]
http://www.acromag.com
Calibration (Optional)
Once you’ve configured the transmitter, you are ready to install
it in the field, as the transmitter has already been factory
calibrated. If you later encounter error that is out of
specification, you can click the
“Calibration”
tab to display the
Calibration control page shown at left.
CALIBRATION – Output
IMPORTANT:
This transmitter has already been factory
calibrated with a high level of precision. If you attempt to
recalibrate the output channel, you could degrade its
performance if it is not done properly, or it is done using lower
grade equipment. Consider your decision to recalibrate
carefully.
Before attempting to recalibrate the output channel, first make
sure the selected Output Range you wish to calibrate has been
selected on the “I/O Config” tab. Additionally, make sure you
write your selections to the transmitter by clicking the [Send I/O
Config] button.
Click the
[Output Cal Instructions]
button to begin output
calibration and enable the Output [Zero-Scale] and [Full-Scale]
buttons.
For output zero-scale endpoint adjustment, click the
[Zero-
Scale]
button to open the zero-scale configuration pop-up. Use
a current meter or digital volt meter to accurately measure the
transmitter output signal and enter the measurement in the
input field provided. Click the
[Submit Measurement]
button to
send the calibration to the transmitter.
For output full-scale endpoint adjustment, click the
[Full-Scale]
button to open the full-scale configuration pop-up. Use a
current meter or digital volt meter to accurately measure the
transmitter output signal and enter the measurement in the
input field provided. Click the
[Submit Measurement]
button to
send the calibration to the transmitter.
NOTE:
To measure current, you can alternatively connect a
voltmeter across a precision load resistor, and then accurately
read the output current as a function of the IR voltage drop
produced in the resistor (recommended for current outputs).