BENTLY 159840-01 | Genuine AccInt Module for Machinery Monitoring

• Model: 159840-01
• Brand: Bently Nevada
• Series: Bently Nevada machinery condition monitoring
• Core Function: Interfaces charge-output accelerometers for vibration measurement
• Type: Acceleration Interface Module (AIM)
• Key Specs: 50 pC/g input sensitivity; 25 Hz high-pass; 350 Hz low-pass

Product Introduction

BENTLY 159840-01 is an Acceleration Interface Module used with charge-output accelerometers in industrial machinery vibration monitoring systems. Current supplier references identify it with the newer 86517-01-01-01-02 product number.

The module conditions the accelerometer signal by providing amplification and filtering, with the documented configuration using 50 pC/g transducer sensitivity, a 25 Hz high-pass corner, and a 350 Hz low-pass corner. The module also provides a DC signal proportional to vibration.

Key Technical Specifications

BENTLY 159840-01

The electrical and dimensional values above are reported for 86517-01-01-01-02, which supplier documentation explicitly identifies as the 159840-01 Acceleration Interface Module.

Application Scenarios

The module is suited to machinery-monitoring installations where vibration signals from charge-output accelerometers must be conditioned before being passed into the monitoring system.

Typical applications include:

• Turbomachinery vibration monitoring
• Compressor monitoring
• Pump and motor condition monitoring
• Rotating-equipment protection
• Industrial machinery diagnostic systems
• Replacement of legacy acceleration interface hardware

For a replacement project, confirm the existing accelerometer’s charge sensitivity and the installed signal-conditioning configuration. A physical fit alone does not establish electrical compatibility.

Replacement Compatibility

One important purchasing detail stands out: 159840-01 is associated with 86517-01-01-01-02 in current supplier documentation. One technical supplier specifically describes 86517-01-01-01-02 as the current part number and 159840-01 as the older reference.

Before ordering, compare:

• Original module part number
• Replacement/current part number
• Board or module revision
• Accelerometer sensitivity
• Filter configuration
• DC bias requirement
• Connector and mounting arrangement
• Existing monitoring-system configuration

Do not substitute solely because the enclosure looks identical.

Quality Inspection Before Shipment

For this type of vibration-interface module, inspection should include:

1. Inbound inspection
   • Verify part-number traceability.
   • Check serial/identification labels.
   • Inspect the housing and connectors for damage, corrosion, or repair marks.
   • Confirm supplied accessories where applicable.
2. Electrical inspection
   • Verify the applicable 24 VDC supply requirement.
   • Check supply current against the documented configuration.
   • Inspect connector continuity and visible PCB condition.
3. Functional testing
   • Power-up test where a compatible test setup is available.
   • Verify accelerometer signal-interface operation.
   • Check filter response where suitable test equipment is available.
   • Record the test results.
4. Configuration verification
   • Record the exact part number and revision.
   • Photograph identification markings before shipment.
5. Final QC
   • ESD-safe packaging.
   • Protective cushioning.
   • QC record and inspection photographs available upon request.

Bently Nevada documentation for its monitoring modules also emphasizes careful receiving inspection and ESD precautions when handling circuit boards.

Technical Pitfalls

1. Confusing 159840-01 with the current part number

This is the first thing to check. 159840-01 and 86517-01-01-01-02 are linked in current supplier references, but procurement documents should retain the exact requested number and verify the replacement relationship before shipment.

2. Accelerometer sensitivity mismatch

The documented configuration uses 50 pC/g. If the installed accelerometer has a different charge sensitivity, the signal chain may not behave as expected.

Check the accelerometer nameplate and original system documentation.

3. Filter configuration

The specified configuration uses 25 Hz high-pass and 350 Hz low-pass filtering. Don’t assume every visually similar interface module has the same filtering.

4. DC bias

The documented configuration uses -10 VDC DC signal bias. This is another parameter worth checking when replacing an older module.

5. ESD handling

Circuit boards and electronic interface modules are susceptible to electrostatic damage. Use an ESD-safe workstation, wrist strap, and suitable packaging during removal and installation.

Quick Conclusion

• BENTLY 159840-01 is an Acceleration Interface Module.
• It is associated with 86517-01-01-01-02 in current supplier references.
• The documented configuration uses 50 pC/g, 25 Hz high-pass, and 350 Hz low-pass filtering.
• Reported power requirements are 24 VDC / 138 mA, with approximately 1.3 W consumption.
• Confirm the accelerometer, filter, bias, revision, and connector configuration before replacement.

FAQ

What is BENTLY 159840-01?

It is an Acceleration Interface Module (AIM) used to interface charge-output accelerometers with industrial machinery vibration-monitoring equipment.

Is 159840-01 the same as 86517-01-01-01-02?

Current supplier documentation identifies 86517-01-01-01-02 as the current product number associated with the older 159840-01 reference. Confirm the exact revision and ordering configuration before purchasing.

What accelerometer sensitivity does it support?

The documented configuration specifies 50 pC/g transducer charge-input sensitivity.

What are the filter frequencies?

The documented configuration has a 25 Hz high-pass corner and 350 Hz low-pass corner.

What power does the module require?

Supplier technical data for the associated current part number specifies 24 VDC, approximately 138 mA, or 1.3 W.

Is 159840-01 suitable as a direct replacement?

It may be, particularly where the existing installation calls for the same interface configuration, but the accelerometer sensitivity, filtering, bias, revision, and system wiring should be checked before installation.