Emerson Fisher FIELDVUE DPC2K Quick Start Manual page 7

Quick Start Guide
D104559X012
General Mounting Guidelines
If ordered as part of a control valve assembly, the factory will mount the digital process controller on the actuator and
calibrate the instrument. If you purchased the digital process controller separately, you will need a mounting kit. The
following procedures are general guidelines. See the instructions that come with the mounting kit for detailed
information on mounting the digital process controller to a specific actuator model and the magnetic array matched
to the actuator.
NOTICE
The magnet assembly material has been specifically chosen to provide a long-term stable magnetic field.
However, as with any magnet, care must be taken when handling the magnet assembly. Another high powered magnet
placed in close proximity (less than 25 mm) can cause permanent damage. Potential sources of damaging equipment
include, but are not limited to: transformers, DC motors, stacking magnet assemblies.
General Guidelines for use of High Power Magnets with Travel Sensors
Use of high power magnets in close proximity to any travel sensor which is operating a process should be avoided. High
power magnets can affect the sensor's ability to measure the valve travel.
Use of Magnetic Tools with the DPC2K
D Magnetic Tip Screw Drivers - Magnetic tip screw drivers can be used to work on the DPC2K. However, they should not
be brought in close proximity to the magnet assembly (located at the back of the instrument) during process
operations.
D Calibrator Strap Magnets - These are high power magnets used to hold 4-20 mA calibrators and other
equipment. Normally, these calibrators would not be used while an instrument is controlling the process.
High power magnets should be kept at least 15 cm (6 in.) from the DPC2K.
Notes
D
As a general rule, do not use less than 60% of the magnet assembly travel range for full travel measurement. Performance will
decrease as the assembly is increasingly subranged.
D
The linear magnet assemblies have a valid travel range indicated by arrows molded into the piece. This means that the hall
sensor (the center point of the channel on the back of the DPC2K housing) has to remain within this range throughout the entire
valve travel. The linear magnet assemblies are symmetrical. Either end may be up.
D
Mounting the instrument vertically, with the vent at the bottom of the assembly, or horizontally, with the vent pointing down, is
recommended to allow drainage of moisture that may be introduced via the instrument air supply.
Mounting on sliding-stem linear actuators
Bracket Mounted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
667, 657, and GX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuators over 210 mm (8.25 in.es Travel)
Integral Mounted Fisher Actuators
Air-to-Open (667 Size 30i - 76i)
Air-to-Close (657 Size 30i - 70i )
Mounting on quarter-turn rotary actuators
Integral Mounted Fisher Actuators
Remote Mount
Pipestand Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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DPC2K Digital Process Controller
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April 2024
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