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BENTLY NEVADA · 3500 MACHINERY MONITORING
3500/77M
176449-07
Reciprocating Cylinder Pressure Monitor designed for four-channel pressure monitoring in the Bently Nevada 3500 machinery monitoring system.
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MONITOR ROLE
Reciprocating Cylinder Pressure
Accepts 1 to 4 approved positive-voltage pressure-transducer channels and conditions the signals for pressure-related measurements and configurable alarm functions.
3500 Rack Integration
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Functional Core
The 3500/77M is a four-channel monitor for reciprocating-compressor cylinder pressure applications. It accepts approved pressure-transducer signals, conditions the signals, produces pressure-related measured variables, and compares configured values with user-programmable alarm setpoints.
Measured variables
Discharge Pressure
Suction Pressure Maximum Pressure Minimum Pressure Compression Ratio Peak Rod Compression Peak Rod Tension Degree of Rod Reversal |
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Front Panel & Output Layer
OK LED — indicates proper monitor operation.
TX/RX LED — indicates communication with other modules in the 3500 rack.
Bypass LED — indicates Bypass Mode.
Buffered transducer outputs — one coaxial connector for each channel; each connector is short-circuit protected.
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Environmental & Mechanical
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Monitor Module
176449-07
3500/77M Recip Cylinder Pressure Monitor occupying one full-height front slot.
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I/O Options
143729-01 / 143737-01
Cylinder Pressure I/O configurations for internal or external terminations.
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Pressure Transducer
165855-XX family
The monitor is intended to operate with approved positive-voltage pressure transducers.
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ORDER CHECKPOINT
For a quotation, please provide the following five items so the required configuration and delivery arrangement can be checked efficiently:
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SERVICE TERMS
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READY TO CHECK 176449-07?
Send the part number, quantity, destination, required date and machine/system details for a faster quotation.
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Can 3500/77M 176449-07 be treated as a direct replacement for every 3500/77M installation?
The 176449-07 identifies the 3500/77M Recip Cylinder Pressure Monitor. Replacement should still be matched to the installed 3500 rack position, Cylinder Pressure I/O arrangement, pressure-transducer configuration and applicable software or firmware requirements.
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Why does 3500/77M 176449-07 require attention to the rear I/O module?
The monitor works with Cylinder Pressure I/O hardware. The 3500/77M supports internal-termination and external-termination I/O arrangements, and these arrangements are not interchangeable. The installed I/O type should therefore be confirmed before a replacement is ordered.
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What should be checked when matching pressure transducers to 3500/77M 176449-07?
The monitor accepts 1 to 4 approved positive-voltage pressure-transducer channels. The transducer scale factor and the configured pressure range need to correspond with the application; the published ranges extend from 100 psia to 10,000 psia.
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Which 3500/77M 176449-07 configuration detail matters when a compressor runs at low speed?
The standard product has a lower machine-speed limit of 60 RPM. For applications requiring operation down to 30 RPM, the published ordering data specifies modification 135M8200-01. This should be checked against the actual machine requirement before replacement.
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What should be preserved before replacing 3500/77M 176449-07 in an operating system?
Record the installed monitor position, I/O termination arrangement, pressure-transducer range and scale factor, active channel configuration, alarm settings and applicable software or firmware revision. After installation, verify the intended pressure channels and alarm behavior before returning the compressor monitoring function to normal service.
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| AFTER-SALES CARE | Please contact us within 7 days after receiving the items if any issue occurs. Returned items should remain in their original condition and include the specific reason for return. A return or replacement will be arranged after the returned item is received and reviewed. The buyer is responsible for shipping costs incurred during the return process. |
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