Latest Published Instruction Manual7..............
Introduction
The product covered in this document is no longer in production. This document, which includes the latest published
version of the instruction manual, is made available to provide updates of newer safety procedures. Be sure to follow
the safety procedures in this supplement as well as the specific instructions in the included instruction manual.
Part numbers in the included instruction manual should not be relied on to order replacement parts. For replacement
parts, contact your Emerson sales office
For more than 20 years, Fisher products have been manufactured with asbestos‐free components. The included
manual might mention asbestos containing parts. Since 1988, any gasket or packing which may have contained some
asbestos, has been replaced by a suitable non‐asbestos material. Replacement parts in other materials are available
from your sales office.
or Local Business Partner.
Safety Instructions
Please read these safety warnings, cautions, and instructions carefully before using the product.
These instructions cannot cover every installation and situation. Do not install, operate, or maintain this product
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 about these instructions, contact
your Emerson sales office or Local Business Partner before proceeding.
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DVC6200 (HW1) Digital Valve Controller
January 2018
Instruction Manual
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Specifications
This product was intended for a specific range of service conditions‐‐pressure, pressure drop, process and ambient
temperature, temperature variations, process fluid, and possibly other specifications. Do not expose the product toservice conditions or variables other than those for which the product was intended. If you are not sure what these
conditions or variables are, contact your Emerson sales office
product serial number and all other pertinent information that you have available.
or Local Business Partner for assistance. Provide the
Inspection and Maintenance Schedules
All products must be inspected periodically and maintained as needed. The schedule for inspection can only be
determined based on the severity of your service conditions. Your installation might also be subject to inspection
schedules set by applicable governmental codes and regulations, industry standards, company standards, or plant
standards.
In order to avoid increasing dust explosion risk, periodically clean dust deposits from all equipment.
When equipment is installed in a hazardous area location (potentially explosive atmosphere), prevent sparks by proper
tool selection and avoiding other types of impact energy. Control Valve surface temperature is dependent upon
process operating conditions.
WARNING
Control valve surface temperature is dependent upon process operating conditions. Personal injury or property damage,
caused by fire or explosion, can result if the valve body surface temperature exceeds the acceptable temperature for the
hazardous area classification. To avoid an increase of instrumentation and/or accessory surface temperature due to process
operating conditions, ensure adequate ventilation, shielding, or insulation of control valve components installed in a
potentially hazardous or explosive atmosphere.
Parts Ordering
Whenever ordering parts for older products, always specify the serial number of the product and provide all other
pertinent information that you can, such as product size, part material, age of the product, and general service
conditions. If you have modified the product since it was originally purchased, include that information with your
request.
WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Automation Solutions should
not, under any circumstances, be used in any Fisher product. Use of components not supplied by Emerson may void your
warranty, might adversely affect the performance of the product and could result in personal injury and property damage.
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DVC6200 (HW1) Digital Valve Controller
January 2018
Installation
WARNING
Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before mounting
the product:
D Do not install any system component where service conditions could exceed the limits given in this manual or the limits
on the appropriate nameplates. Use pressure‐relieving devices as required by government or accepted industry codes
and good engineering practices.
D Always wear protective gloves, clothing, and eyewear when performing any installation operations.
D Do not remove the actuator from the valve while the valve is still pressurized.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve.
D Vent the pneumatic actuator loading pressure and relieve any actuator spring precompression so the actuator is not
applying force to the valve stem; this will allow for the safe removal of the stem connector.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D The valve packing box might contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids might spray out under pressure when removing the packing hardware or packing rings, or when
loosening the packing box pipe plug. Cautiously remove parts so that fluid escapes slowly and safely.
D The instrument is capable of supplying full supply pressure to connected equipment. To avoid personal injury and
equipment damage, caused by sudden release of process pressure or bursting of parts, make sure the supply pressure
never exceeds the maximum safe working pressure of any connected equipment.
D Severe personal injury or property damage may occur from an uncontrolled process if the instrument air supply is not
clean, dry and oil‐free, or noncorrosive gas. While use and regular maintenance of a filter that removes particles larger
than 40 microns will suffice in most applications, check with an Emerson Automation Solutions field office and Industry
Instrument air quality standards for use with corrosive gas or if you are unsure about the proper amount or method of
air filtration or filter maintenance.
D For corrosive media, make sure the tubing and instrument components that contact the corrosive media are of suitable
corrosiion-resistant material. The use of unsuitable materials might result in personal injury or property damage due to
the uncontrolled release of the corrosive media.
D If natural gas or other flammable or hazardous gas is to be used as the supply pressure medium and preventive
measures are not taken, personal injury and property damage could result from fire or explosion of accumulated gas or
from contact with hazardous gas. Preventive measures may include, but are not limited to: Remote venting of the unit,
re‐evaluating the hazardous area classification, ensuring adequate ventilation, and the removal of any ignition sources.
D To avoid personal injury or property damage resulting from the sudden release of process pressure, use a high‐pressure
regulator system when operating the controller or transmitter from a high‐pressure source.
The instrument or instrument/actuator assembly does not form a gas‐tight seal, and when the assembly is in an
enclosed area, a remote vent line, adequate ventilation, and necessary safety measures should be used. Vent line piping
should comply with local and regional codes and should be as short as possible with adequate inside diameter and few
bends to reduce case pressure buildup. However, a remote vent pipe alone cannot be relied upon to remove all
hazardous gas, and leaks may still occur.
D Personal injury or property damage can result from the discharge of static electricity when flammable or hazardous
gases are present. Connect a 14 AWG (2.08 mm
flammable or hazardous gases are present. Refer to national and local codes and standards for grounding
requirements.
D Personal injury or property damage caused by fire or explosion may occur if electrical connections are attempted in an
area that contains a potentially explosive atmosphere or has been classified as hazardous. Confirm that area
classification and atmosphere conditions permit the safe removal of covers before proceeding.
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) ground strap between the instrument and earth ground when
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DVC6200 (HW1) Digital Valve Controller
January 2018
D For instruments with a hollow liquid level displacer, the displacer might retain process fluid or pressure. Personal injury
or property damage due to sudden release of pressure, contact with hazardous fluid, fire, or explosion can be caused by
puncturing, heating, or repairing a displacer that is retaining process pressure or fluid. This danger may not be readily
apparent when disassembling the sensor or removing the displacer. Before disassembling the sensor or removing the
displacer, observe the appropriate warnings provided in the sensor instruction manual.
D Personal injury or property damage, caused by fire or explosion from the leakage of flammable or hazardous gas, can
result if a suitable conduit seal is not installed. For explosion‐proof applications, install the seal no more than 457 mm
(18 inches) from the instrument when required by the nameplate. For ATEX applications use the proper cable gland
certified to the required category. Equipement must be installed per local and national electric codes.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
D If installing into an existing application, also refer to the WARNING in the Maintenance section.
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Special Instructions for Safe Use and Installations in Hazardous Locations
Certain nameplates may carry more than one approval, and each approval may have unique installation requirements
and/or conditions of safe use. Special instructions are listed by agency/approval. To get these instructions, contact
Emerson sales office
or Local Business Partner. Read and understand these special conditions of use before installing.
WARNING
Failure to follow conditions of safe use could result in personal injury or property damage from fire or explosion, or area
re‐classification.
Operation
With instruments, switches, and other accessories that are controlling valves or other final control elements, it is
possible to lose control of the final control element when you adjust or calibrate the instrument. If it is necessary to
take the instrument out of service for calibration or other adjustments, observe the following warning before
proceeding.
WARNING
Avoid personal injury or equipment damage from uncontrolled process. Provide some temporary means of control for the
process before taking the instrument out of service.
Maintenance
WARNING
Before performing any maintenance operations on an actuator‐mounted instrument or accessory:
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Instruction Manual
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D To avoid personal injury, always wear protective gloves, clothing, and eyewear.
D Provide some temporary measure of control to the process before taking the instrument out of service.
D Provide a means of containing the process fluid before removing any measurement devices from the process.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve.
D Vent the pneumatic actuator loading pressure and relieve any actuator spring precompression so the actuator is not
applying force to the valve stem; this will allow for the safe removal of the stem connector.
D Personal injury or property damage may result from fire or explosion if natural gas or other flammable or hazardous gas
is used as the supply medium and preventive measures are not taken. Preventive measures may include, but are not
limited to: Remote venting of the unit, re‐evaluating the hazardous area classification, ensuring adequate ventilation,
and the removal of any ignition sources. For information on remote venting of this instrument, refer to the Installation
section.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D The valve packing box might contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids might spray out under pressure when removing the packing hardware or packing rings, or when
loosening the packing box pipe plug. Cautiously remove parts so that fluid escapes slowly and safely.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
D On an explosion‐proof instrument, remove the electrical power before removing the instrument covers in a hazardous
area. Personal injury or property damage may result from fire and explosion if power is applied to the instrument with
the covers removed.
DVC6200 (HW1) Digital Valve Controller
January 2018
Instruments Mounted on Tank or Cage
WARNING
For instruments mounted on a tank or displacer cage, release trapped pressure from the tank and lower the liquid level to a
point below the connection. This precaution is necessary to avoid personal injury from contact with the process fluid.
Instruments With a Hollow Displacer or Float
WARNING
For instruments with a hollow liquid level displacer, the displacer might retain process fluid or pressure. Personal injury
and property might result from sudden release of this pressure or fluid. Contact with hazardous fluid, fire, or explosion can
be caused by puncturing, heating, or repairing a displacer that is retaining process pressure or fluid. This danger may not
be readily apparent when disassembling the sensor or removing the displacer. A displacer that has been penetrated by
process pressure or fluid might contain:
D pressure as a result of being in a pressurized vessel
D liquid that becomes pressurized due to a change in temperature
D liquid that is flammable, hazardous or corrosive.
Handle the displacer with care. Consider the characteristics of the specific process liquid in use.Before removing the
displacer, observe the appropriate warnings provided in the sensor instruction manual.
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DVC6200 (HW1) Digital Valve Controller
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Instruction Manual
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Non‐Fisher (OEM) Instruments, Switches, and Accessories
Installation, Operation, and Maintenance
Refer to the original manufacturer's documentation for Installation, Operation and Maintenance safety information.
Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Fisher and FIELDVUE are marks owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson
Automation Solutions, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their
respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not
to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are
governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.
Emerson Automation Solutions
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Cernay, 68700 France
Dubai, United Arab Emirates
Singapore 128461 Singapore
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E 2018 Fisher Controls International LLC. All rights reserved.