Emerson Fisher 4200 Instruction Manual page 15

Instruction Manual
D200354X012
WARNING
On an explosion‐proof instrument, remove electrical power before removing the covers in a hazardous area. Personal
injury or property damage may result from fire or explosion if power is applied to the instrument with the covers removed,
in a hazardous area.
On an intrinsically safe instrument, current monitoring during operation must be with a meter approved for hazardous
areas.
Refer to figure 5 for component locations.
Figure 5. Transmitter Printed Wiring Board Assembly
TOP COMPONENT SIDE (VIEWED FROM TOP SIDE)
1. Remove power from the instrument.
2. Connect the digital voltmeter (DVM) leads as follows:
a . For all transmitters (except a 4212 or 4222) connect between TP3 (+) and TP4 (-) on the printed wiring board.
b . For a 4212 or 4222 transmitter, connect the DVM between TP5 (+) and TP6 (-).
3. Loosen the appropriate set screw connecting the potentiometer shaft to the linkage:
a . For sliding‐stem applications, loosen the set screw (key 26, figure 15) in the operating arm (key 30) on the
potentiometer shaft.
b . For rotary actuator applications, loosen the set screw in the coupling (key 50, figure 19) on the potentiometer
shaft.
c . For long‐stroke applications, leave the coupler (key 100E) rigidly attached to the potentiometer shaft. Loosen
only the coupling screw (key 100F, figures 22 and 23) in the coupler (key 100E) on the transducer shaft.
4200 Transmitters
IDENTIFICATION LABEL
March 2011
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