Which installed system position is intended for 991-25-70-01-00?

Install 991-25-70-01-00 only in the documented 991 thrust transmitter system position and compare the complete catalog marking with the approved hardware list.

What field signals or controlled function does 991-25-70-01-00 handle?

Its documented role is axial displacement converted to a 4–20 ma current-loop signal; preserve the assigned channel, network or controller function during service.

Which companion hardware must be matched to 991-25-70-01-00?

Match 991-25-70-01-00 with 3300 NSv probe and matched extension cable and Proximitor Sensor, including the documented rack, cable and project identity.

Which electrical rating must be checked before wiring 991-25-70-01-00?

Verify full-scale range: 25-0-25 mils. Do not transfer limits from another catalog number.

What configuration should be recorded before replacing 991-25-70-01-00?

Record the as-found position, conductors, addressing, firmware and software revision, then restore only the approved 991 thrust transmitter system configuration.

Which isolation and handling controls apply to 991-25-70-01-00?

Isolate all documented supply and field energy, use ESD controls and protect keyed connectors before handling 991-25-70-01-00.

How should an engineer commission 991-25-70-01-00?

Power up in a controlled sequence, review device and host diagnostics, then prove the intended turbine thrust-position monitoring function.

Can 991-25-70-01-00 replace a visually similar module without an engineering review?

No automatic substitution is assumed; compare the complete catalog number, interfaces, ratings and approved system revision.

991-25-70-01-00 | Bently Nevada | 991 two-wire thrust transmitte

Name: 991-25-70-01-00
Brand: Bently Nevada
SKU: 991-25-70-01-00

991-25-70-01-00

991 two-wire thrust transmitter

In Stock

Ships by Tuesday, September 22

Fast Shipping Available

Technical specifications for 991-25-70-01-00

Manufacturer:

Bently Nevada

Product Category:

Machinery Monitoring System

Spare Part Number:

991-25-70-01-00

Estimated shipping dimensions:

10x7.4x6cm

Weight:

0.5 kg

Tariff Code:

8537101190

Counliy of origin:

USA

Full-scale range:

25-0-25 mils

System length:

7.0 m

Mounting:

DIN-rail clip

Agency approval:

None

Transmitter type:

2-wire, loop powered

Supply voltage:

+12 to +35 V DC

Process output:

4 to 20 mA

Input system:

3300 NSv proximity transducer system

Loop accuracy:

+/-1.5%

Buffered output:

BNC Prox Out

Buffered output impedance:

10 kohm for 10 Mohm load

Not OK current:

Below 3.6 mA

Not OK response:

Within 100 us

Recovery time:

Within 0.1 s

Humidity:

Up to 100%, condensing

Adjustments:

Zero and span

Power-up inhibit:

Provided

Information

Overview Manuals Common Applications Product Precautions

Bently Nevada 991-25-70-01-00 is 991 two-wire thrust transmitter. It converts axial shaft displacement from a matched 3300 NSv proximity system into a 4–20 mA process signal.

Accepts a matched 3300 NSv transducer signal
Provides a loop-powered 4–20 mA displacement output
Supplies a buffered BNC Prox Out for diagnostics
Uses the 25-0-25 mil range with a 7.0 m system

991-25-70-01-00 operates with 3300 NSv probe, matched extension cable and Proximitor Sensor, 12 to 35 VDC current loop, PLC or DCS analog input.

Engineered applications include Turbine thrust-position monitoring, Compressor axial-displacement trending, DCS thrust-alarm integration, 991 transmitter replacement.

Important Notice: Confirm the complete 991-25-70-01-00 marking, MOD identity where present, matched 3300 NSv system length, mounting hardware, loop polarity and approved axial range; set zero and span only against the documented mechanical reference.

Apter Power Bently Nevada 991-25-70-01-00 Manuals and Guides

Apter Power Bently Nevada 991-25-70-01-00 Product Technical Reference PDF Apter Power Bently Nevada 991-25-70-01-00 Installation and Verification Workbook PDF

The first document presents model-specific technical and system data. The second provides a separate installation, connection, commissioning and acceptance workflow.

Turbine thrust-position monitoring

Tracks rotor axial movement at thrust-bearing locations.

Compressor axial-displacement trending

Provides a continuous displacement trend for compressor protection.

DCS thrust-alarm integration

Transfers the thrust variable into plant control and historian systems.

991 transmitter replacement

Restores a documented transmitter loop while preserving polarity and transducer matching.

Read the applicable Bently Nevada instructions before work. Verify 991-25-70-01-00 and the installed 991 thrust transmitter system configuration.

Verify the complete 991-25-70-01-00 marking and its assigned 991 thrust transmitter system position before work.

Place the connected turbine thrust-position monitoring process in the approved maintenance state.

Isolate applicable power and axial displacement converted to a 4–20 ma current-loop signal field energy before disconnecting conductors.

Record connector, conductor, address, firmware and software identities before removal.

Use ESD controls and protect keyed interfaces, exposed contacts and electronic assemblies.

Confirm the installed 3300 NSv probe and matched extension cable and Proximitor Sensor against the approved project.

Restore power in a controlled sequence and review device, network and host diagnostics.

Prove the intended compressor axial-displacement trending function and retain the final test result.

FAQS

Which installed system position is intended for 991-25-70-01-00?

Install 991-25-70-01-00 only in the documented 991 thrust transmitter system position and compare the complete catalog marking with the approved hardware list.
What field signals or controlled function does 991-25-70-01-00 handle?

Its documented role is axial displacement converted to a 4–20 ma current-loop signal; preserve the assigned channel, network or controller function during service.
Which companion hardware must be matched to 991-25-70-01-00?

Match 991-25-70-01-00 with 3300 NSv probe and matched extension cable and Proximitor Sensor, including the documented rack, cable and project identity.
Which electrical rating must be checked before wiring 991-25-70-01-00?

Verify full-scale range: 25-0-25 mils. Do not transfer limits from another catalog number.
What configuration should be recorded before replacing 991-25-70-01-00?

Record the as-found position, conductors, addressing, firmware and software revision, then restore only the approved 991 thrust transmitter system configuration.
Which isolation and handling controls apply to 991-25-70-01-00?

Isolate all documented supply and field energy, use ESD controls and protect keyed connectors before handling 991-25-70-01-00.
How should an engineer commission 991-25-70-01-00?

Power up in a controlled sequence, review device and host diagnostics, then prove the intended turbine thrust-position monitoring function.
Can 991-25-70-01-00 replace a visually similar module without an engineering review?

No automatic substitution is assumed; compare the complete catalog number, interfaces, ratings and approved system revision.

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991-25-70-01-00

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Technical specifications for 991-25-70-01-00

Technical specifications for 991-25-70-01-00

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