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4200 Transmitters
September 2022
Introduction
Scope of Manual
This instruction manual provides installation, operating, calibration, maintenance, and parts ordering information for
Fisher 4200 electronic position transmitters (figure 1). Refer to separate instruction manuals for information on the
actuator and valve.
Do not install, operate, or maintain a 4200 electronic position transmitter without being fully trained
and qualified in valve, actuator, and accessory installation, operation, and maintenance. To avoid
personal injury or property damage, it is important to carefully read, understand, and follow all of the
contents of this manual, including all safety cautions and warnings. If you have any questions regarding
these instructions contact your
Description
4200 electronic position transmitters combine Fisher field‐proven electronic and mechanical expertise in a versatile,
accurate instrument. They sense the position of a sliding‐stem actuator, rotary actuator, vent, damper, or other device
and send a standard (4‐20 mA) output signal to an indicating device, a process control system or programmable logic
controller. 4200 transmitters are available as a transmitter only, as a transmitter with integral high and low position
switches, or with high and low position switches only. Refer to the nameplate to determine the type of transmitter.
Use the Type number and table 2 to determine the output and travel ranges available from the transmitter.
When the instrument is mounted, the potentiometer shaft (figure 2) is mechanically connected to the device to sense
mechanical motion. Except for the 4215 transmitter, all types of transmitters use a single potentiometer for position
input. The 4215 transmitter uses dual potentiometers mounted on the same shaft. This permits using individual
potentiometers for the transmitter and the position switch circuits, providing additional electrical isolation. For
long‐stroke applications, a multi‐turn potentiometer attached to a travel transducer assembly senses linear motion of
the actuator stem or other device.
Figure 2. Transmitter Dimensions
51
(2.00)
51
(2.00)
BOTTOM VIEW
19A7968-E
B1910-4
2
Emerson sales office
PORT 1/2 NPT
(2 PLACES)
5/16‐18UNC
13 DEEP
(0.53)
CAP
(2 PLACES)
6 (0.25)
DIA.
END VIEW
before proceeding.
TRANSMITTER
COMPARTMENT
102
(4.00)
(4.00)
(1.38)
(3.00)
67
(2.62)
21
(0.81)
ALLOW 254 mm (10 INCHES)
FOR MAINTENANCE (2 PLACES)
Instruction Manual
FIELD WIRING
COMPARTMENT
159
(6.25)
102
35
75
67
(2.62)
SIDE VIEW
D200354X012
POTENTIOMETER
SHAFT
mm
(INCH)
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