4200 Series Transmitters
Instruction Manual
Form 5596
November 2006
2
Do not install, operate or maintain a 4200 Series
electronic position transmitter without first
D
being
fully trained and qualified in valve, actuator and
accessory installation, operation and maintenance,
and
D
carefully reading and understanding the
contents of this manual. If you have any questions
about these instructions, contact your Emerson
Process Management
t
sales office.
Description
The 4200 Series electronic position transmitters
combine Fisher
R
field-proven electronic and
mechanical expertise in a versatile, accurate
instrument. It senses the position of a sliding stem
actuator, rotary actuator, vent, damper, or other
device and sends a standard (4 to 20 milliampere)
output signal to an indicating device, a process
control system or programmable logic controller. The
4200 Series 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
Type 4215 transmitter, all types of transmitters use a
single potentiometer for position input. The Type
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 cable/pulley assembly
senses linear motion of the actuator stem or other
device.
For instruments equipped with position switches, the
high relay position switch can be set at any point of
travel. The low relay position switch can be offset
from the high relay position switch trip point by as
little as 1/20 of the travel. In the event of a power
loss both position switch relays de-energize,
indicating loss of transmitter power.
Specifications
Specifications for the 4200 Series transmitters are
listed in table 1.
WARNING
This product is intended for a specific
current range, temperature range and
other application specifications.
Applying different current, temperature
and other service conditions could
result in malfunction of the product,
property damage or personal injury.
Educational Services
For information on available courses for 4200 Series
electronic position transmitters, as well as a variety
of other products, contact:
Emerson Process Management
Educational Services, Registration
P.O. Box 190; 301 S. 1st Ave.
Marshalltown, IA 50158
−
2823
Phone: 800
−
338
−
8158 or
Phone: 641
−
754
−
3771
FAX: 641
−
754
−
3431
e-mail: [email protected]
Note
Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use and maintenance of any
product. Responsibility for the
selection, use and maintenance of any
product remains with the purchaser
and end-user.
