{"product_id":"bently-nevada-140734-02-3500-42m-proximitor®-seismic-monitor","title":"Bently Nevada 140734-02 3500\/42M Proximitor®\/Seismic Monitor","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e3500\/42M\u003c\/strong\u003e, designated under spare component assembly \u003cstrong\u003e140734-02\u003c\/strong\u003e, is a four-channel machinery protection hardware instrument designed to process inputs from proximity and seismic transducers. The module acts as an analytical safety layer within the 3500 Machinery Protection System, conditioning analog wave inputs to calculate variables such as radial vibration, thrust position, eccentricity, or velocity, and executing comparisons against user-programmable alarm setpoints. Programmed in paired channel groups through the 3500 Rack Configuration Software, it drives automated alarms when configured safety limits are violated. The hardware supplies individual +4 to +20 mA current recorder loops for each channel to transmit real-time static values directly to distributed control networks and operational archiving servers without interrupting primary protective operations.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFour independent processing channels supporting multiple concurrent vibration and positional function types.\u003c\/li\u003e\n\u003cli\u003eFlexible transducer matching accommodating standard eddy current proximity probes, accelerometers, and velocity sensors.\u003c\/li\u003e\n\u003cli\u003ePairwise channel programming architectures permitting distinct mathematical operations across channel pairs 1-2 and 3-4.\u003c\/li\u003e\n\u003cli\u003eConfigurable Alert and Danger setpoint assignment supporting granular machine safety limits across all calculated static values.\u003c\/li\u003e\n\u003cli\u003eIndividual, front-panel coaxial buffered transducer connections engineered with short-circuit protection for structural diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial steam turbine rotor shaft radial vibration tracking and thrust position observation.\u003c\/li\u003e\n\u003cli\u003eLarge-scale centrifugal gas compressor casing seismic velocity monitoring and mechanical trip protection.\u003c\/li\u003e\n\u003cli\u003ePower generation gas turbine shaft absolute vibration and rotor eccentricity monitoring.\u003c\/li\u003e\n\u003cli\u003eHeavy industrial fluid pump rolling element bearing health analysis using specialized REBAM logic.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOption Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e3500\/42-AXX-BXX\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eProximitor® Seismic Monitor\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eA: I\/O Module Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e01\u003c\/td\u003e\n\u003ctd\u003eProx\/Seismic I\/O Module with Internal Terminations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e02\u003c\/td\u003e\n\u003ctd\u003eProx\/Seismic I\/O Module with External Terminations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e03\u003c\/td\u003e\n\u003ctd\u003eTMR Prox\/Seismic I\/O Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e04\u003c\/td\u003e\n\u003ctd\u003eI\/O Module with Internal Barriers (4 x prox.\/accel. ch's) and Internal Terminations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e05\u003c\/td\u003e\n\u003ctd\u003eI\/O Module with Internal Barriers (2 x prox.\/accl. + 2 x Velomitor® channels) and Internal Terminations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e06\u003c\/td\u003e\n\u003ctd\u003eI\/O Module with Internal Barriers (4 x Velomitor® channels) and Internal Terminations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e07\u003c\/td\u003e\n\u003ctd\u003eShaft Absolute I\/O Module with Internal Terminations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e08\u003c\/td\u003e\n\u003ctd\u003eShaft Absolute I\/O Module with External Terminations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e09\u003c\/td\u003e\n\u003ctd\u003eProx\/Velom I\/O Module with Internal Terminations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003eProx\/Velom I\/O Module with External Terminations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eB: Agency Approval Option\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e00\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e01\u003c\/td\u003e\n\u003ctd\u003eCSA\/NRTL\/C (Class 1, Div 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e02\u003c\/td\u003e\n\u003ctd\u003eATEX\/CSA (Class 1, Zone 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpares\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e140734-02\u003c\/td\u003e\n\u003ctd\u003e3500\/42M Proximitor®\/Seismic Monitor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3500\/42M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140734-02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAccepts 1 to 4 proximity, velocity, or acceleration transducer signals \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard Input Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 kΩ for Proximitor and Acceleration inputs \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBussed TMR Input Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 kΩ effective impedance with 3 channels wired in parallel \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Power Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.7 Watts typical \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Panel Status Indicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOK LED, TX\/RX LED, Bypass LED \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBuffered Output Ports\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 short-circuit protected coaxial connectors (1 per channel) \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 Ω \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransducer Power Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-24 Vdc \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecorder Current Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+4 to +20 mA DC individual loop per channel \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecorder Voltage Compliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to +12 Vdc range across load \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecorder Load Resistance Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 600 Ω \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog Bit Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.3662 µA per bit \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData Update Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 ms or less \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThrust\/Diff. Expansion Filter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect filter: -3 dB at 1.2 Hz | Gap filter: -3 dB at 0.41 Hz \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStatic Value Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin ±0.33% of full-scale typical, ±1% maximum \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm Setpoint Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin 0.13% of the desired value \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlert Alarm Delay Scope\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 to 60 seconds in 1 second intervals \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDanger Alarm Delay Scope\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 seconds or 1 to 60 seconds in 0.5 second intervals \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temp (Standard I\/O)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-30 Celsius to +65 Celsius (-22 Fahrenheit to +150 Fahrenheit) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temp (Barrier I\/O)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 Celsius to +65 Celsius (32 Fahrenheit to +150 Fahrenheit) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature Limits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 Celsius to +85 Celsius (-40 Fahrenheit to +185 Fahrenheit) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Humidity Bounds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e95% noncondensing relative humidity \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMonitor Module Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.91 kg (2.0 lbs) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O Module Weight (Non-barrier)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.20 kg (0.44 lbs) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O Module Weight (Barrier)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.46 kg (1.01 lbs) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMonitor Module Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e241.3 mm x 24.4 mm x 241.8 mm \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O Module Dimensions (Standard)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e241.3 mm x 24.4 mm x 91.1 mm \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O Module Dimensions (Barrier)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e241.3 mm x 24.4 mm x 163.1 mm \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRack Allocation Footprint\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 full-height front slot and 1 full-height rear slot \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\u003eTerminal \/ Connector Pin\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction\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 Connectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShort-circuit protected buffered output for dynamic signal diagnostics \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProx\/Seismic I\/O Terminals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRear interface wire blocks for direct internal termination sensor hookups \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExternal Termination Headers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDedicated multi-pin headers interfacing to standalone terminal blocks \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecorder Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDedicated loop connection points for +4 to +20 mA proportional telemetry \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\u003eNoise Suppression: Ensure sensor shielding parameters are thoroughly maintained by tying instrumentation ground wires to the specified chassis ground points on the I\/O block to limit electromagnetic coupling.\u003c\/li\u003e\n\u003cli\u003eAlignment Mapping: Confirm that the main card assembly \u003cstrong\u003e140734-02\u003c\/strong\u003e slides cleanly along the guide tracks of the front rack slot, seating firmly into the rear data backplane lines.\u003c\/li\u003e\n\u003cli\u003eTermination Rules: Never mix external termination blocks with I\/O modules explicitly designed and coded for internal termination applications.\u003c\/li\u003e\n\u003cli\u003eSpace Allotment: Maintain clear tracking lines on both the forward and rear margins of the chassis rack frame to promote unrestricted ambient airflow through the module housings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCE Low-Voltage Directives: EN61010-01 safety requirements for industrial monitoring equipment.\u003c\/li\u003e\n\u003cli\u003eEMC Emissions Shielding: Certified under IEC\/EN 61000-6-4 and EN 55011 Class A standards.\u003c\/li\u003e\n\u003cli\u003eEMC Susceptibility Criteria: Meets EN 61000-4-2 Electrostatic Discharge (Criteria B) and EN 61000-4-3 Radiated Susceptibility (Criteria A).\u003c\/li\u003e\n\u003cli\u003eHazardous Area Approvals: CSA\/NRTL\/C Class I, Division 2, Groups A, B, C, D (T4 rating at Ta = -30 Celsius to +65 Celsius).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical \u0026amp; Procurement FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this component function as an absolute overspeed machinery shutdown mechanism?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, this device is explicitly designed to handle dynamic proximitor and seismic acceleration\/velocity metrics rather than the high-frequency speed wheel edge triggers needed for deterministic overspeed protection loops.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the underlying distinction between the 3500\/42M designation and part number 140734-02?\u003c\/strong\u003e A: The 3500\/42M reflects the official overall functional system monitor series classification, whereas the code 140734-02 governs the exact ordering catalog number for the internal replacement main circuit board.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will an unexpected short circuit across the +4 to +20 mA recorder loop disrupt machinery protection?\u003c\/strong\u003e A: No, the analog current loop circuitry is internally isolated, meaning the processing logic, monitor functionality, and protective safety alarms continue operating normally if a field recorder loop shorts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is it possible to program channel 1 to calculate radial vibration while channel 2 evaluates thrust position?\u003c\/strong\u003e A: No, monitoring channels are configured software-wise in distinct functional pairs, meaning channels 1 and 2 must execute the same baseline behavioral function, while channels 3 and 4 can handle another.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What happens to the front panel indicators if the module experiences an internal processing error?\u003c\/strong\u003e A: The green OK LED will drop out of its constant illuminating status, signaling a hardware exception condition and initiating a safe system bypass state to avoid false over-limit trips.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666517717355,"sku":"3500\/42M 140734-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-3500-42m-140734-02-proximitor-seismic-monitor-pwa-r0numhbecec_3ab792c9-f156-41de-b90f-53ed4538fa1b.jpg?v=1765440108","url":"https:\/\/www.plcprotech.com\/products\/bently-nevada-140734-02-3500-42m-proximitor%c2%ae-seismic-monitor","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}