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Technical specifications for 3500/45 140072-04
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Manufacturer:Bently Nevada
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Product Category:Machinery Monitoring Systems
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Spare Part Number:140072-04
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Estimated shipping dimensions:2.6x25.8x24cm
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Weight:0.9 kg
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Tariff Code:8537101190
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Counliy of origin:USA
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Signal inputs:1 to 4
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Supported transducers:Proximitor; RPT; DC LVDT
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Power consumption:7.7 W typical
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Power with internal barriers:8.8 W typical
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Proximitor/RPT input impedance:10 kOhm
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DC LVDT input impedance:1 MOhm
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Proximitor/RPT excitation:-24 Vdc
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DC LVDT excitation:+15 Vdc
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Recorder output:4-20 mA
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Recorder load:0-600 Ohm
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Recorder resolution:0.3662 uA per bit
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Recorder update rate:100 ms or less
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Thrust sensitivity:3.94 or 7.87 mV/um
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Differential expansion sensitivity:0.394 or 0.787 mV/um
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Direct-filter response:-3 dB at 1.2 Hz
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Gap-filter response:-3 dB at 0.41 Hz
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Measurement accuracy:+/-0.33% FS typical; +/-1% maximum
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Alarm setpoint accuracy:Within 0.13% of desired value
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Operating temperature:-30 to +65 degC
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Storage temperature:-40 to +85 degC
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Relative humidity:95% non-condensing
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Front rack space:1 full-height slot
Information
Overview
Manuals
Common Applications
Product Precautions
Bently Nevada 3500/45 140072-04 is a four-channel Position Monitor for the 3500 rack. It converts position-transducer inputs into machinery displacement values, recorder outputs and protection alarms.
- Processes four channels of machine-position and displacement measurements
- Supports thrust, differential-expansion, case-expansion and valve-position channel pairs
- Conditions Proximitor, rotary-position-transducer and DC-LVDT signals
- Compares measured position with configured Alert and Danger setpoints
3500/45 140072-04 installs with 3500 rack, 135137-01 or approved Position I/O module, Proximitor, RPT or DC LVDT sensors, 3500 Rack Configuration Software in an engineered 3500 Machinery Protection System configuration.
The commissioning workflow covers installed-hardware matching, controlled start-up and functional verification for this four-channel position monitor.
Important Notice: Confirm the complete 3500/45 140072-04 marking, installed-system configuration, field connections and controlled functional test before commissioning or replacement.
Apter Power 3500/45 140072-04 Manuals and Guides
Apter Power 3500/45 140072-04 Product Technical Reference PDFBently Nevada 3500/45 140072-04 Official Manual PDF
The first document is an Apter Power model-specific technical reference. The second supports model-specific installation, configuration and engineering verification.
Turbine thrust-position protectionProcesses four channels of machine-position and displacement measurements
Differential-expansion monitoringSupports thrust, differential-expansion, case-expansion and valve-position channel pairs
Case-expansion measurementConditions Proximitor, rotary-position-transducer and DC-LVDT signals
Steam-valve position supervisionCompares measured position with configured Alert and Danger setpoints
Read the applicable Bently Nevada installation instructions before work. Verify 3500/45 140072-04 and the installed 3500 Machinery Protection System configuration.
1Confirm 140072-04 and the paired rear I/O execution before removing the monitor.
2Isolate transducer excitation and recorder loops before disturbing rack connections.
3Record every channel-pair function, scale, zero, polarity and alarm delay.
4Do not interchange Proximitor, RPT and DC-LVDT excitation arrangements.
5Use ESD controls and protect buffered-output connectors during handling.
6Restore the approved position-monitor configuration for the exact machine train.
7Move each sensor through a controlled range and verify direction plus scaling.
8Prove Alert, Danger and recorder response before enabling shutdown logic.
Technical notes
Confirm channel-pair function, sensor excitation, scale, mechanical zero and travel direction; then prove recorder scaling and Alert/Danger action through the full controlled movement range.
FAQ View All FAQ
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Which sensor families can be configured on 3500/45 140072-04?Configure only the documented Proximitor, rotary-position-transducer or DC-LVDT interface supported by the installed rear I/O execution.
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How are channel pairs used on 3500/45 140072-04?Assign each pair to the approved thrust, differential-expansion, case-expansion or valve-position function and preserve its scale and polarity.
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What should be checked before zeroing 3500/45 140072-04?Verify sensor mounting, mechanical reference, excitation, travel direction and gap or position signal before changing electronic zero.
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How is the recorder output from 3500/45 140072-04 verified?Move the sensor through controlled positions and compare the monitor value with the connected recorder or control-system scaling.
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Can a DC LVDT channel be exchanged with a Proximitor channel on 3500/45 140072-04?Only after the approved I/O hardware, excitation, configuration and wiring are changed for the actual sensor; the circuits are not directly interchangeable.
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What causes an incorrect travel direction on 3500/45 140072-04?Review sensor polarity, mechanical linkage orientation, channel configuration and the recorded as-found direction before altering alarm logic.
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How should alarms be tested after replacing 3500/45 140072-04?Exercise each configured position channel with a controlled stimulus and prove Alert, Danger, delay and bypass behavior without defeating safeguards.
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What replacement records are required for 3500/45 140072-04?Retain sensor identity, channel pair, scale, zero, polarity, travel test, recorder response and final alarm-test results.
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