Minco
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are set, the Zero and Span trim pots should provide sufficient adjustments to calibrate the
transmitter.
In the event that the trim pots do not have sufficient adjustments, the switch settings should
then be changed. In the above example, if the Zero trim pot cannot adjust the transmitter
current down to 4mA with the 30°F Zero switch settings, then the Zero switch settings should
then be changed to 37°F (OFF, ON, OFF and ON) which is the next higher range. Likewise if the
Span trim pot does not have sufficient adjustment, then the Span switch settings should be
changed.
