Instruction Manual
D102005X012
846 Transducer
June 2017
7
CAUTION
Do not use sealing tape on pneumatic connections. This instrument contains small passages that may become obstructed
by detached sealing tape. Thread sealant paste should be used to seal and lubricate pneumatic threaded connections.
This section presents information on installing the 846 current‐to‐pressure transducer. Figures 4, 5, 6, and 8 can be
used as references for instructions contained in this section.
When a control valve is ordered with an 846 transducer specified to be mounted on the actuator, the factory‐mounted
transducer is connected to the actuator with the necessary tubing and calibrated to the specifications on the order.
If the transducer is purchased separately for mounting on a control valve already in service, all the necessary mounting
parts are furnished, if ordered. This includes the appropriate bracket for attaching the unit to an actuator boss (with
tapped holes) or for attaching it to the diaphragm casing.
If preferred, mounting parts can be supplied for mounting the transducer on a 51 mm (2‐inch) diameter pipestand, a
flat surface, or a bulkhead.
Transducers also can be ordered separately for mounting on a control valve assembly already in service. The
transducer may be ordered with or without mounting parts. Mounting parts include the appropriate bracket and bolts
for attaching the unit to an actuator boss (with tapped holes) or for attaching it to the diaphragm casing.
Hazardous Area Classifications and Special Instructions for “Safe Use” and
Installation in Hazardous Locations
Refer to the following instruction manual supplements for approval information.
D CSA Approval Information for Fisher 846 Current-to-Pressure Transducers (D104218X012
)
D FM Approval Information for Fisher 846 Current-to-Pressure Transducers (D104219X012
)
D ATEX Approval Information for 846 Current-to-Pressure Transducers (D104220X012
)
D IECEx Approval Information for 846 Current-to-Pressure Transducers (D104221X012
)
D INMETRO Approval Information for Fisher 846 Current-to-Pressure Transducers (D103623X012
)
D NEPSI Approval Information for Fisher 846 Current-to-Pressure Transducers (D103618X012
)
All documents are available from your Emerson sales office, Local Business Partner, or Fisher.com
. Contact your
Emerson sales office or Local Business Partner for all other approval/certification information.
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