Remote Control Instructions For Pressure Transducers - Setra Systems 204 Operating Instructions Manual

5.0 Remote control instructions for pressure transducer
Cable leads indicated below are connected into the transducer circuitry on this transducer as
ordered.
Connection of the remote control leads extends the internal zero and sensitivity adjustments.
The transducer was factory calibrated with the remote control wiring disconnected.
The remote control leads directly access active circuit elements. Inadvertent short-circuiting
to each other, to ground, or other mis-wiring may cause immediate circuit damage. Keep
remote control wiring either free of other contact or else keep the leads properly wired as
shown below.
Note: All resistance elements are 0.1 watt or greater. All remote circuits have voltages less
than 10 volts and currents less than 1 mA.
Yellow
Blue
Violet
*Red
(M239 w/Option 621/622
*Red (M239 w/option E/G and M)
and 642)
*Brown (M204 w/option E/G and M)
*Brown
(M204 w/option 621/622 and 642)
CAUTION
Remote zero adjustment (standard, red 9
conductor cable)
The transducer has been preset with the regular
internal zero adjustment potentiometer. If remote
zero control is desired, connect the orange, green
and black leads as shown with external resistors
and potentiometers.
Remote sensitivity adjustment (option M)
The transducer has been preset with the regular
internal sensitivity adjustment potentiometer. If
remote sensitivity control is desired (Option M),
10K
connect the yellow, blue and violet* leads and
adjustable resistance as shown.
*For Models 239 and 204 w/options E/G and M,
replace violet lead as shown.
Remote calibration signal (option R)
Two types of calibration signal zero offset are
offered:
Fixed calibration signal closing red to black leads.
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