Fisher 846 Electro-Pneumatic Transducer
Fisher 846 Electro-Pneumatic Transducer
Detailed parameters
|
Item |
Specification |
|
Area Classification |
Explosion Proof, Intrinsically Safe, Non-incendive, General Purpose, Flame Proof |
|
Certifications |
CSA, FM, ATEX, IECEx, CUTR, Regional |
|
Communication Protocol |
4-20mA Analog |
|
Data Interface |
Wired |
|
Diagnostics |
No |
|
Input Signal |
Electric |
|
Max Outlet Pressure |
35 psig |
|
Mounting Type |
Remote Mount, Actuator Mount |
|
Operating Temperature |
Standard Temperature |
|
Position Control |
Modulating Control |
|
Power Source |
Local |
|
Supply Media |
Air |
Fisher 846 Product Features
•Vibration-resistant: Lightweight pilot stage with a mechanical damping design keeps output steady-even under heavy vibration.
•Handles contaminants: Large nozzles, unrestricted flow paths, and big internal air passages mean dirt buildup and wear won't stop it.
•Self-correcting: Built-in feedback loop watches the pneumatic output. If something's off, it fixes itself-no waiting, no guessing.
•Easy fixes: All key parts live in one swap-out module. Replace it in the field and you're back online fast.
•Simple check: The Stroke Port vents a small amount of air through the cover. Cover it with your finger-if output changes, everything's working. Quick way to test the system or even stroke the actuator without extra gear.
application
Oil & Gas - Converts electronic signals into pneumatic output for accurate control of valves and actuators in wellheads, separators, and gas regulating pipelines.
Refining & Petrochemical - Delivers precise modulation in hydrogen units, distillation columns, FCC units, and auxiliary loops.
Power & Industrial Utilities - Ensures reliable actuator performance in boiler feedwater systems, steam headers, reactors, cooling circuits, and utility distribution networks.
Our advantages
•Best value - Competitive prices through our global supply network.
•Fast delivery - Short lead times, always on schedule.
•1-year warranty - Full coverage, no surprises.
•Expert help - Engineers ready to assist anytime.
•Shipping options - Air, sea, express, or consolidated.
•Safe packaging - Sturdy boxes, secure transit.
•Global reach - Trusted by customers and distributors worldwide.
FAQ
Q: What input signals work with the Fisher 846?
A: Standard is 4–20 mA. Some models also accept voltage input.
Q: My 846 responds slow or output pressure is low. What should I check?
A: Start with supply pressure-make sure it's in range. Dirty air is the usual culprit. Check your filter and make sure air quality meets ISA S7.0.01.
Q: Is the 846 rated for SIS use?
A: It's stable, but don't assume. Check the official docs for SIL ratings and any restrictions before using it in SIS loops.
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