{"product_id":"bently-nevada-3500-77m-03-00-176449-07-cylinder-pressure-monitor","title":"Bently Nevada 3500\/77M-03-00 176449-07 Cylinder Pressure Monitor","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e3500\/77M-03-00\u003c\/strong\u003e functions as a complete, full-height compressor diagnostic system combining the \u003cstrong\u003e176449-07\u003c\/strong\u003e 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 \u003cstrong\u003e176449-07\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Processing and Terminal Set:\u003c\/strong\u003e Combines the front-panel \u003cstrong\u003e176449-07\u003c\/strong\u003e processing monitor and the rear-panel internal termination I\/O card into a single synchronized system kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReciprocating Diagnostics Package:\u003c\/strong\u003e Tracks eight key dynamic variables per channel, including direct chamber pressure profiles and mechanical cross-channel rod stress variables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Tier Boundary Alarms:\u003c\/strong\u003e Enables independent software setpoints for alert alarms across all active variables, and danger-level protection limits for any two selected variables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegulated Sensor Power Loops:\u003c\/strong\u003e Features dedicated on-board power generation on the rear card, supplying +23.0 Vdc with 24.5 mA current limiting per channel to drive field transmitters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInverted Diagnostic Outputs:\u003c\/strong\u003e Provides short-circuit immune coaxial front connectors that present an inverted and offset (-2.265 Vdc) buffered representation of the raw transducer signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Network Integration:\u003c\/strong\u003e Communicates via the rack-standard VME bus backplane to relay vital diagnostic information to operators, managed via dedicated front status LEDs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefinery Hydrocracking Compressors:\u003c\/strong\u003e Complete slot-pair protection tracking head-end and crank-end pressures on high-pressure hydrogen reciprocating machinery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural Gas Transmission Stations:\u003c\/strong\u003e Continuous calculation of rod reversal angles, peak rod tension, and compression ratios on multi-stage line boosters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePetrochemical Production Assets:\u003c\/strong\u003e High-speed protection loop monitoring to isolate hyper-compressor cylinders from severe thermodynamic or structural loading faults.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Gas Manufacturing Plants:\u003c\/strong\u003e Dedicated diagnostic monitoring of suction and discharge pressure boundaries on multi-stage process reciprocating loops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3500\/77M-AA-BB Cylinder Pressure Monitor System\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA: I\/O Module Type\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e03: Cylinder Pressure I\/O Module with Internal Terminations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eB: Agency Approval Option\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e00: None (Standard Configuration)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpares and Accessories\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e176449-07: 3500\/77M Cylinder Pressure Monitor Main Front Board (Front-Card Module Component)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBently Nevada (Baker Hughes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3500\/77M-03-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Module Component\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e176449-07 Main Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear Module Component\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCylinder Pressure I\/O Module (Internal Terminations)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eComplete Reciprocating Cylinder Pressure Monitor System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannel Input Count\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 to 4 channels of positive voltage 3rd-party pressure transducers (psia)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScale Factor Range (100 psia)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e95,000 mV\/psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScale Factor Range (250 psia)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38,000 mV\/psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScale Factor Range (500 psia)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e19,000 mV\/psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScale Factor Range (1000 psia)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9,500 mV\/psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScale Factor Range (2500 psia)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3,800 mV\/psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScale Factor Range (5000 psia)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,900 mV\/psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScale Factor Range (10,000 psia)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e950 mV\/psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransducer Voltage Calibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAssumes +0.5 Vdc at 0 psia and +10.0 Vdc at full-range psia value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Input Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannel Frequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 5.5 kHz on all configured pressure channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePressure Accuracy (at +25 degC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin plus\/minus 0.5% of pressure transducer full-range (9.5 Volts: From +0.5 to +10.0 Volts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePressure Accuracy (Full Range)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin plus\/minus 1.0% of pressure transducer full-range over -30 to +65 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Power Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.8 Watts with transducer supplies operating at full load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransducer Power Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+23.0 plus\/minus 0.8 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransducer Current Limit Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24.5 mA current limiting on each individual channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Panel Buffered Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInverted and offset by -2.265 Vdc due to rear I\/O network scaling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBuffered Output Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e550 Ohm (short-circuit protected)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-30 to +65 degC (-22 to +150 Fahrenheit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 degC (-40 to +185 Fahrenheit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Humidity Tolerance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e95%, non-condensing relative humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Processing Module Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.91 kg (2.0 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Processing Module Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear I\/O Module Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.20 kg (0.44 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear I\/O Module Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis Front Slot Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 full-height front slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis Rear Slot Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 full-height rear slot directly behind front module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections\/Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eConnector Interface Location\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction and Terminal Assignment\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Panel Coaxial Sockets\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannels 1 to 4 independent short-circuit protected inverted buffered transducer outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear Card Internal Terminations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMulti-point terminal blocks for field sensor wiring, shielding bonds, and power loops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlot Alignment Configuration:\u003c\/strong\u003e Slide the \u003cstrong\u003e176449-07\u003c\/strong\u003e processing board into a full-height slot in the front of the 3500 chassis, ensuring it shares the identical slot index with its rear card.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear Component Pairing:\u003c\/strong\u003e Secure the associated internal termination I\/O module into the rear of the rack frame directly behind the front processor module to complete the internal circuit paths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Mapping and Inversion:\u003c\/strong\u003e Account for an electronic signal inversion and an offset of -2.265 Vdc when capturing raw wave data from the front panel buffered diagnostic ports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Venting Clearance:\u003c\/strong\u003e Ensure the cabinet enclosure maintains adequate air current and stays strictly between the -30 and +65 degC operating threshold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransducer Factor Verification:\u003c\/strong\u003e Check that the specific two-point calibration values (voltage vs. absolute pressure) match the sensor datasheet and are correctly mapped in the 3500 Rack Configuration Software.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat components are included under the 3500\/77M-03-00 part number?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do the front card and rear card interconnect within the system?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThey insert into the same physical slot location from opposite sides of the chassis, completing connection loops via the integrated rack backplane assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat specific type of sensor input does this combined set process?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe system is built to process signals from approved positive-voltage third-party absolute pressure transducers (psia).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are the front panel buffered outputs inverted?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat specific chamber parameters are managed by the front processing hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe card computes discharge pressure, suction pressure, maximum pressure, minimum pressure, and the absolute compression ratio for each active chamber.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the system generate cross-channel rod measurements?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe front-end processing unit combines live pressure channel inputs with user-configured mechanical properties to track peak rod compression, tension, and reversal angles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat level of built-in power protection exists for field instrumentation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe rear interface supplies +23.0 Vdc field power equipped with a safety current limiting circuit locked at 24.5 mA per channel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this front and rear module combination be used with hazardous area barriers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe -03-00 designation features standard internal termination blocks without integrated barriers, intended for general or non-barrier field cabling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many slots does this complete monitor kit occupy in the 3500 rack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt occupies exactly one full-height slot location on the front of the rack and one full-height slot location on the rear backplane.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum allowed operational temperature for this hardware set?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe paired front and rear cards are fully rated to perform in environmental temperatures peaking up to +65 degC.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666865451371,"sku":"3500\/77M-03-00 176449-07","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-3500-77m-03-00-176449-07-cylinder-pressure-monitor-111vjrd4ted_08ed9aa3-f1b4-44df-9f78-fd09fe192aaf.jpg?v=1765449428","url":"https:\/\/www.plcprotech.com\/products\/bently-nevada-3500-77m-03-00-176449-07-cylinder-pressure-monitor","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}