Advantage Controls MegaTronMT Manual page 22

3.1. 4-20mA Out
Units with a 4-20mA output option will have a menu for setting up the 4-20mA output. The 4mA and 20mA
of 8.0.
3.2 4-20mA Input
3.3 4-20mA Output Calibration
SIGNAL SOURCE - Select which probe reading the
mA will use as its reading source.
4 mA VALUE - What the 4mA signal equals
20mA VALUE - What the 20mA signal equals on the
assigned signal sources scale.
SET POINT - What reading turns the relay on
DIFFERENTIAL - Amount reading changes by before
HIGH ALARM - What reading generates a High alarm
LOW ALARM - What reading generates a Low alarm
DISABLER - Selected input will disable High/LOW
4-20mA outputs can be calibrated to insure that the
output generated by the controller and received by the
external device match. With a volt meter connected
across the out and return wires (see page 7) of the
4-20mA output channel to be calibrated go into the
The number displayed in the Calibration dialog box can
range from 0-4095 with 800 equal to 0 mA output and
4030 equal to 20 mA. This number range of 0-4095 is
the raw digital to analog (D/A) values and is strictly used
for a reference. The D/A numbers you get will vary based
on your installation conditions.
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