Manufacturer: Bently Nevada
Product No.: 3500/77M-03-00 176449-07
Country of origin:United States
Product Type: Cylinder Pressure Monitor
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 1110g
Dimensions: 241.3 mm x 24.4 mm x 241.8 mm
Shipping port: Xiamen
Warranty: 12 months
The 3500/77M-03-00 functions as a complete, full-height compressor diagnostic system combining the 176449-07 front processing monitor and the matching rear cylinder pressure I/O module with internal terminations. This integrated four-channel hardware set accepts balanced dynamic inputs from approved positive-voltage third-party pressure transducers (psia) installed on reciprocating machinery. The front 176449-07 processing card executes advanced parallel signal conditioning to resolve eight measured variables per channel, tracking suction pressure, discharge pressure, maximum/minimum peak boundaries, and real-time compression ratios. Concurrently, the rear interface card routes raw signals, grounds shields, and distributes internal transmitter power loops. By comparing live data against independent alert and danger setpoints, this paired monitor system ensures reliable machinery protection and automated emergency trip execution for reciprocating assets.
| Parameter | Specification Details |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| System Model | 3500/77M-03-00 |
| Front Module Component | 176449-07 Main Board |
| Rear Module Component | Cylinder Pressure I/O Module (Internal Terminations) |
| Product Type | Complete Reciprocating Cylinder Pressure Monitor System |
| Channel Input Count | 1 to 4 channels of positive voltage 3rd-party pressure transducers (psia) |
| Scale Factor Range (100 psia) | 95,000 mV/psi |
| Scale Factor Range (250 psia) | 38,000 mV/psi |
| Scale Factor Range (500 psia) | 19,000 mV/psi |
| Scale Factor Range (1000 psia) | 9,500 mV/psi |
| Scale Factor Range (2500 psia) | 3,800 mV/psi |
| Scale Factor Range (5000 psia) | 1,900 mV/psi |
| Scale Factor Range (10,000 psia) | 950 mV/psi |
| Transducer Voltage Calibration | Assumes +0.5 Vdc at 0 psia and +10.0 Vdc at full-range psia value |
| System Input Impedance | 50 kOhm |
| Channel Frequency Response | 0 to 5.5 kHz on all configured pressure channels |
| Pressure Accuracy (at +25 degC) | Within plus/minus 0.5% of pressure transducer full-range (9.5 Volts: From +0.5 to +10.0 Volts) |
| Pressure Accuracy (Full Range) | Within plus/minus 1.0% of pressure transducer full-range over -30 to +65 degC |
| System Power Consumption | 7.8 Watts with transducer supplies operating at full load |
| Transducer Power Output | +23.0 plus/minus 0.8 Vdc |
| Transducer Current Limit Protection | 24.5 mA current limiting on each individual channel |
| Front Panel Buffered Outputs | Inverted and offset by -2.265 Vdc due to rear I/O network scaling |
| Buffered Output Impedance | 550 Ohm (short-circuit protected) |
| Operating Temperature Range | -30 to +65 degC (-22 to +150 Fahrenheit) |
| Storage Temperature Range | -40 to +85 degC (-40 to +185 Fahrenheit) |
| System Humidity Tolerance | 95%, non-condensing relative humidity |
| Front Processing Module Weight | 0.91 kg (2.0 lb) |
| Front Processing Module Size | 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in) |
| Rear I/O Module Weight | 0.20 kg (0.44 lb) |
| Rear I/O Module Size | 241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in) |
| Chassis Front Slot Requirement | 1 full-height front slot |
| Chassis Rear Slot Requirement | 1 full-height rear slot directly behind front module |
| Connector Interface Location | Function and Terminal Assignment |
|---|---|
| Front Panel Coaxial Sockets | Channels 1 to 4 independent short-circuit protected inverted buffered transducer outputs |
| Rear Card Internal Terminations | Multi-point terminal blocks for field sensor wiring, shielding bonds, and power loops |
What components are included under the 3500/77M-03-00 part number?
This is a pre-paired kit that includes both the 176449-07 front processing monitor card and the rear cylinder pressure I/O module with internal termination blocks.
How do the front card and rear card interconnect within the system?
They insert into the same physical slot location from opposite sides of the chassis, completing connection loops via the integrated rack backplane assembly.
What specific type of sensor input does this combined set process?
The system is built to process signals from approved positive-voltage third-party absolute pressure transducers (psia).
Why are the front panel buffered outputs inverted?
The rear internal termination I/O circuitry applies an electronic scale shift, which causes the front diagnostic outputs to be inverted and offset by -2.265 Vdc.
What specific chamber parameters are managed by the front processing hardware?
The card computes discharge pressure, suction pressure, maximum pressure, minimum pressure, and the absolute compression ratio for each active chamber.
How does the system generate cross-channel rod measurements?
The front-end processing unit combines live pressure channel inputs with user-configured mechanical properties to track peak rod compression, tension, and reversal angles.
What level of built-in power protection exists for field instrumentation?
The rear interface supplies +23.0 Vdc field power equipped with a safety current limiting circuit locked at 24.5 mA per channel.
Can this front and rear module combination be used with hazardous area barriers?
The -03-00 designation features standard internal termination blocks without integrated barriers, intended for general or non-barrier field cabling.
How many slots does this complete monitor kit occupy in the 3500 rack?
It occupies exactly one full-height slot location on the front of the rack and one full-height slot location on the rear backplane.
What is the maximum allowed operational temperature for this hardware set?
The paired front and rear cards are fully rated to perform in environmental temperatures peaking up to +65 degC.
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Returns & Warranty
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| Color pattern |
Greyish White
Silver
|
| Country of origin |
United States
|
| Power source |
DC Power
|
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