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Technical specifications for 3500/72M 176449-08
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Manufacturer:Bently Nevada
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Product Category:Machinery Monitoring Systems
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Spare Part Number:3500/72M 176449-08
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Estimated shipping dimensions:2.5x25.8x24cm
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Weight:0.8 kg
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Tariff Code:8537101190
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Counliy of origin:USA
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Part number:176449-08
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Input channels:1 to 4 proximity probe signals
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Input impedance:10 kOhm
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Power consumption:7.7 W nominal
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Rod-position scale factors:0.79 / 3.94 / 7.87 mV/um
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Front buffered outputs:1 coaxial connector per channel
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Buffered-output impedance:510 Ohm
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Transducer supply:-24 V DC
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Peak-to-peak filter:1 to 600 Hz
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Gap filter:-3 dB at 0.09 Hz
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Position amplitude accuracy:+/-0.33% FS typical; +/-1% maximum
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Position angle accuracy:+/-1 degree typical; +/-3 degrees maximum
Information
Overview
Manuals
Common Applications
Product Precautions
Bently Nevada 3500/72M 176449-08 is a four-channel reciprocating-rod position monitor. It conditions proximity signals and calculates rod-position and rod-drop measurements for compressor protection.
- Conditions up to four proximity-probe signals on reciprocating compressors
- Calculates rod position, rod drop, gap, crank angle, and harmonic data
- Compares conditioned measurements with configured alarm setpoints
- Returns dynamic and static values through the 3500 rack communication path
3500/72M 176449-08 installs with 3500 rack and power supply, compatible proximity transducers, keyphasor or crank-reference input, approved internal or external I/O module in an engineered 3500 machinery protection system configuration.
The commissioning workflow covers installed-hardware matching, controlled start-up and functional verification for this 3500/72m recip rod position monitor.
Important Notice: Confirm the complete 3500/72M 176449-08 marking, installed-system configuration, field connections and controlled functional test before commissioning or replacement.
Apter Power 3500/72M 176449-08 Manuals and Guides
Apter Power 3500/72M 176449-08 Product Technical Reference PDFBently Nevada 3500/72M 176449-08 Official Manual PDF
The first document is an Apter Power model-specific technical reference. The second supports model-specific installation, configuration and engineering verification.
Reciprocating-compressor rod positionConditions up to four proximity-probe signals on reciprocating compressors
Rod-drop trendingCalculates rod position, rod drop, gap, crank angle, and harmonic data
Hyper compressor displacement monitoringCompares conditioned measurements with configured alarm setpoints
Compressor rider-band and clearance assessmentReturns dynamic and static values through the 3500 rack communication path
Read the applicable Bently Nevada installation instructions before work. Verify 3500/72M 176449-08 and the installed 3500 machinery protection system configuration.
1Verify 3500/72M 176449-08 and its I/O module before rack work.
2Place compressor protection in the approved maintenance state.
3Record channel pairing, full-scale range, scale factor, and alarms.
4Preserve probe polarity and crank-reference assignment.
5Use ESD controls and inspect rack and I/O connectors.
6Confirm the selected measurement type for every channel pair.
7Compare gap, rod position, and angle with controlled mechanical conditions.
8Prove alarms, bypass status, relay voting, and historian values before service.
Technical notes
Configure channel pairs for the selected rod-position function, match transducer scale factor and crank reference, and prove gap, phase, alarm, and trip behavior during controlled compressor commissioning.
FAQ View All FAQ
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What commissioning evidence should be retained for 3500/72M 176449-08?Retain the full 3500/72M 176449-08 identity, as-left wiring and settings, measured functional-test results, final diagnostics, and authorization to return the affected equipment to service.
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Which installed hardware must be matched before fitting 3500/72M 176449-08?Match the complete 3500/72M 176449-08 marking to 3500 rack and power supply and compatible proximity transducers, then confirm the assigned 3500 machinery protection system position and approved system configuration.
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How should the field connections for 3500/72M 176449-08 be recorded before replacement?Record terminal or connector identity, polarity, shield, cable tag, channel assignment, and the as-found diagnostic state before disconnecting 3500/72M 176449-08.
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What isolation is required before installing 3500/72M 176449-08?Place reciprocating-compressor rod position in the approved maintenance state, isolate every applicable power, signal, and stored-energy source, and prove the work area safe.
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Which configuration check is essential when commissioning 3500/72M 176449-08?Restore only the approved model-specific channel, range, address, scale, or interface settings and compare them with the physical installation before enabling the process function.
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How can an engineer function-test 3500/72M 176449-08 after installation?Apply a controlled input, reference, or limited output appropriate to 3500/72m recip rod position monitor, observe the system indication and diagnostics, and confirm the intended process response.
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What should be checked if 3500/72M 176449-08 reports an unstable or incorrect value?Check seating, supply, grounding, shielding, matched components, mechanical installation, and the signal path before changing configuration or replacing additional hardware.
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Can 3500/72M 176449-08 be replaced by a visually similar model without review?No. Verify the complete part number, electrical execution, connector arrangement, companion hardware, and approved software or rack configuration.
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