Bently Nevada 5110 Mod 709V

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5110 modified for radial vibration display 5110 Mod 709V for Bently Nevada Produced from (?) to (?) Manuals (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

Mod 709V appears to be an adaptation of 5110 scopes for radial vibration display made by Tektronix in Beaverton for Bently Nevada.

The modification touches several components:

Mainframe:
- Bently Nevada name & logo
- Graticule illumination added with Tektronix control knob
- Intensity input BNC changed to yellow binding post
- Right vertical signal routed to horizontal plugin (implied)

5B10N:
- External input BNC changed to green binding post
- "Display" color key area expanded to include what appears to be a three-way switch with positions
  - Normal
  - L vs R <unintelligible>
  - L vs R

5A19N (two):
- Inverting input red binding posts changed to light blue

Advertised serial numbers:

B1217xx
B1303yy

Sources

Noted in February 2021 on eBay and found also listed by but not available from NRI Industrial Sales. Photos come from these two public listings.

Case

Both noted examples include a robust travel case, but the cases differ.

Findings

This page describes connecting "Bently equipment" X & Y "Proximitor" signals and a "Keyphasor" signal via an "Oscilloscope Interface" to an unspecified oscilloscope. Bently Nevada, now "a Baker Hughes business", continues to sell current Proximitor and Keyphasor products per linked literature dated 2019 and 2020. The Bently Nevada TK21 Oscilloscope Interface appears to have superseded the modified oscilloscope. Details for that device appear consistent with Mod 709V.

Pictures

Key Specifications

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