Which installed system position is intended for 990-04-70-01-01?

Install 990-04-70-01-01 only in the documented 990 vibration transmitter system position and compare the complete catalog marking with the approved hardware list.

What field signals or controlled function does 990-04-70-01-01 handle?

Its documented role is radial vibration 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 990-04-70-01-01?

Match 990-04-70-01-01 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 990-04-70-01-01?

Verify full-scale range: 0 to 100 um peak-to-peak. Do not transfer limits from another catalog number.

What configuration should be recorded before replacing 990-04-70-01-01?

Record the as-found position, conductors, addressing, firmware and software revision, then restore only the approved 990 vibration transmitter system configuration.

Which isolation and handling controls apply to 990-04-70-01-01?

Isolate all documented supply and field energy, use ESD controls and protect keyed connectors before handling 990-04-70-01-01.

How should an engineer commission 990-04-70-01-01?

Power up in a controlled sequence, review device and host diagnostics, then prove the intended pump radial-vibration monitoring function.

Can 990-04-70-01-01 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.

990-04-70-01-01 | Bently Nevada | 990 two-wire vibration transmitte

Name: 990-04-70-01-01
Brand: Bently Nevada
SKU: 990-04-70-01-01

990-04-70-01-01

990 two-wire vibration transmitter

In Stock

Ships by Tuesday, September 22

Fast Shipping Available

Technical specifications for 990-04-70-01-01

Manufacturer:

Bently Nevada

Product Category:

Machinery Monitoring System

Spare Part Number:

990-04-70-01-01

Estimated shipping dimensions:

10x7.3x6cm

Weight:

0.44 kg

Tariff Code:

8537101190

Counliy of origin:

USA

Full-scale range:

0 to 100 um peak-to-peak

System length:

7.0 m

Mounting:

DIN-rail clip

Agency approval:

CSA Division 2

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

Frequency response:

5 Hz to 6 kHz, +0/-3 dB

Loop accuracy:

+/-1.5%

Prox Out scale factor:

7.87 mV/um (200 mV/mil)

Prox Out impedance:

10 kohm for 10 Mohm load

Maximum loop lead resistance:

1000 ohm at 35 V DC

Current limit:

23 mA typical

Not OK current:

Below 3.6 mA

Power-up inhibit:

3.6 mA for 2 to 3 s

Information

Overview Manuals Common Applications Product Precautions

Bently Nevada 990-04-70-01-01 is 990 two-wire vibration transmitter. It converts radial vibration 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 vibration output
Offers a buffered Prox Out for waveform checks
Adds CSA Division 2 approval to the 100 um configuration

990-04-70-01-01 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 Pump radial-vibration monitoring, Compressor shaft-vibration trending, DCS machinery condition input, 990 transmitter replacement.

Important Notice: Verify 990-04-70-01-01, the selected full-scale vibration range, total transducer length, mounting hardware, loop polarity and alarm scaling before removal; confirm Prox Out waveform and 4–20 mA scaling after installation.

Apter Power Bently Nevada 990-04-70-01-01 Manuals and Guides

Apter Power Bently Nevada 990-04-70-01-01 Product Technical Reference PDF Apter Power Bently Nevada 990-04-70-01-01 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.

Pump radial-vibration monitoring

Transfers radial shaft vibration into a standard analog loop.

Compressor shaft-vibration trending

Tracks vibration trends on rotating compressors.

DCS machinery condition input

Presents a machinery variable to plant control and historian systems.

990 transmitter replacement

Restores a documented loop while retaining range and transducer matching.

Read the applicable Bently Nevada instructions before work. Verify 990-04-70-01-01 and the installed 990 vibration transmitter system configuration.

Verify the complete 990-04-70-01-01 marking and its assigned 990 vibration transmitter system position before work.

Place the connected pump radial-vibration monitoring process in the approved maintenance state.

Isolate applicable power and radial vibration 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 shaft-vibration trending function and retain the final test result.

FAQS

Which installed system position is intended for 990-04-70-01-01?

Install 990-04-70-01-01 only in the documented 990 vibration transmitter system position and compare the complete catalog marking with the approved hardware list.
What field signals or controlled function does 990-04-70-01-01 handle?

Its documented role is radial vibration 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 990-04-70-01-01?

Match 990-04-70-01-01 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 990-04-70-01-01?

Verify full-scale range: 0 to 100 um peak-to-peak. Do not transfer limits from another catalog number.
What configuration should be recorded before replacing 990-04-70-01-01?

Record the as-found position, conductors, addressing, firmware and software revision, then restore only the approved 990 vibration transmitter system configuration.
Which isolation and handling controls apply to 990-04-70-01-01?

Isolate all documented supply and field energy, use ESD controls and protect keyed connectors before handling 990-04-70-01-01.
How should an engineer commission 990-04-70-01-01?

Power up in a controlled sequence, review device and host diagnostics, then prove the intended pump radial-vibration monitoring function.
Can 990-04-70-01-01 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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990-04-70-01-01

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Technical specifications for 990-04-70-01-01

Technical specifications for 990-04-70-01-01

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