Does 143729-01 use internal or external terminations?

This part uses internal terminations; the official documentation states external termination blocks cannot be used with internal-termination I/O modules.

What transducer inputs are intended for 143729-01?

It accepts Bently-approved positive-voltage pressure transducers used for cylinder-pressure measurements.

What connector headers are listed for 143729-01?

The spares list identifies an eight-pin and a three-pin internal I/O connector header used on this module.

What rack position is required for 143729-01?

The I/O module occupies the full-height rear slot associated with the front monitor module.

What configuration data should be checked for 143729-01?

Verify transducer two-point pressure/voltage data, channel assignment, measured variables and alarm setpoints.

What software baseline applies when commissioning 143729-01?

The 3500/77M documentation specifies minimum firmware and software revisions that must be met or exceeded.

How should replacement of 143729-01 be verified?

Record the original headers and channel wiring, install the module under isolation, restore the configuration and test pressure values and alarms.

143729-01

Name: 143729-01
Brand: Bently Nevada
SKU: 143729-01

3500/77M Cylinder Pressure I/O Module with Internal Terminations

Product image is representative; revision or series may vary. Contact us to request a specific version.

Product Describe：

Bently Nevada 143729-01 is the internal-termination Cylinder Pressure I/O Module for the 3500/77M Recip Cylinder Pressure Monitor. It interfaces approved positive-voltage pressure transducers with the monitor's cylinder-pressure measurement channels.

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Technical specifications for 143729-01

Manufacturer:

Bently Nevada
Product Category:

Machinery Monitoring Systems
Spare Part Number:

143729-01
Estimated shipping dimensions:

2.3x11x24.1cm
Weight:

0.38 kg
Tariff Code:

8537101190
Counliy of origin:

USA
Host monitor:

3500/77M
I/O function:

Cylinder pressure
Termination:

Internal
Input impedance:

50 kohm
Transducer supply:

+23.0 +/-0.8 Vdc
Current limiting:

24.5 mA per channel
Pressure-channel frequency response:

0-5.5 kHz
Operating temperature:

-30 to 65 deg C
Rack position:

Full-height rear slot
Supported transducers:

Bently-approved positive-voltage pressure transducers

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Information

Overview Manuals Common Applications Product Precautions

Installed behind the matched reciprocating-compressor monitor, this I/O assembly brings cylinder-pressure channels into the protected 3500 measurement path.

Provides internal termination for reciprocating-cylinder pressure inputs
Feeds conditioned transducer signals to the paired 3500/77M monitor
Supports the monitored chamber measurements used for compressor protection
Keeps the pressure I/O connection within the 3500 rack architecture

Install 143729-01 in the rear I/O position paired with the correct 3500/77M monitor and use only its internal termination headers. Verify transducer polarity, channel scale data and the required monitor firmware and configuration-software revisions before enabling alarms.

Important Notice: Confirm 143729-01, the paired 3500/77M front module, rear-slot position, internal headers, approved pressure-transducer scale and polarity, rack grounding, firmware/software revisions and alarm functional testing before commissioning.

Apter Power 143729-01 Manuals and Guides

The first document is a model-specific engineering data reference. The second is a distinct installation and commissioning workbook with field checks and acceptance records.

Reciprocating-compressor cylinder monitoring

Connects cylinder pressure transducers used for chamber pressure measurements.

Suction and discharge pressure supervision

Supports monitor calculations used to observe pressure behavior across the compressor cycle.

Rod load protection calculations

Provides input data used by the monitor's peak compression, peak tension and reversal calculations.

Compressor alarm commissioning

Supports channel configuration and alarm testing for a 3500/77M protection installation.

Read the applicable Bently Nevada installation information before work. Verify 143729-01 and the installed 3500/77M Cylinder Pressure I/O Module with Internal Terminations configuration before isolation, wiring or commissioning.

Verify the complete 143729-01 marking and its assigned 3500/77M channel group.

Place the rack and connected pressure circuits in the approved maintenance state.

Use ESD-safe handling for the rear I/O module and connector headers.

Do not connect external termination blocks to this internal-termination module.

Confirm the eight-pin and three-pin internal headers are correctly seated.

Verify each approved pressure transducer's two-point scale information and polarity.

Check required 3500/77M firmware and configuration software before download.

Prove channel values, buffered outputs and configured alarms before returning protection service.

Technical notes

FAQ View All FAQ

Which monitor uses 143729-01?

It is the internal-termination Cylinder Pressure I/O Module for the 3500/77M monitor.
Does 143729-01 use internal or external terminations?

This part uses internal terminations; the official documentation states external termination blocks cannot be used with internal-termination I/O modules.
What transducer inputs are intended for 143729-01?

It accepts Bently-approved positive-voltage pressure transducers used for cylinder-pressure measurements.
What connector headers are listed for 143729-01?

The spares list identifies an eight-pin and a three-pin internal I/O connector header used on this module.

What rack position is required for 143729-01?

The I/O module occupies the full-height rear slot associated with the front monitor module.
What configuration data should be checked for 143729-01?

Verify transducer two-point pressure/voltage data, channel assignment, measured variables and alarm setpoints.
What software baseline applies when commissioning 143729-01?

The 3500/77M documentation specifies minimum firmware and software revisions that must be met or exceeded.
How should replacement of 143729-01 be verified?

Record the original headers and channel wiring, install the module under isolation, restore the configuration and test pressure values and alarms.

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