{"product_id":"350900-315-bently-nevada-velocity-acceleration-sensor","title":"350900-315 Bently Nevada Velocity \u0026 Acceleration Sensor","description":"\u003ch2\u003e350900-315 | Bently Nevada 350900 High Temperature Velocity and Acceleration Sensor\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 350900-315\u003c\/strong\u003e High Temperature Velocity and Acceleration Sensor (HTVAS) provides two vibration outputs from one sensing assembly: velocity for machinery protection and acceleration for condition diagnostics. Its architecture separates the high-temperature sensing head from the signal-conditioning electronics, allowing the sensing head to operate near hot machinery while the electronics remain in a suitable cooler location.\u003c\/p\u003e\n\u003cp\u003eThe 350900 family is designed primarily for use with \u003cstrong\u003eBently Nevada 3500\/42M and 3500\/44M monitors\u003c\/strong\u003e. When both outputs connect to the same monitor, assign them to a separate channel pair, such as channels 1 and 3, or use separate monitors. Confirm the monitor configuration and applicable wiring instructions before commissioning.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose the 350900 HTVAS?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eEngineering requirement\u003c\/th\u003e\n\u003cth\u003eSensor capability\u003c\/th\u003e\n\u003cth\u003ePractical value\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHot machinery surfaces\u003c\/td\u003e\n\u003ctd\u003eSensing head rated up to +482°C (+900°F)\u003c\/td\u003e\n\u003ctd\u003eSupports vibration measurement where conventional case-mounted sensors may exceed their temperature limits.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection and diagnostics\u003c\/td\u003e\n\u003ctd\u003eSeparate velocity and acceleration outputs\u003c\/td\u003e\n\u003ctd\u003eSupports velocity-based monitoring alongside acceleration-based vibration analysis.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduced connector-related failure exposure\u003c\/td\u003e\n\u003ctd\u003eSensing head and electronics permanently connected through a hardline cable\u003c\/td\u003e\n\u003ctd\u003eEliminates an intermediate connection between these assemblies as a potential failure point.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtended cable runs\u003c\/td\u003e\n\u003ctd\u003eMaximum cable length: 305 m (1,000 ft), according to the supplied specifications\u003c\/td\u003e\n\u003ctd\u003eSupports remote monitoring installations when the complete cable arrangement meets system requirements.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndustrial mounting\u003c\/td\u003e\n\u003ctd\u003eFour-hole, square mounting pattern\u003c\/td\u003e\n\u003ctd\u003eAllows mounting to a prepared surface with suitable flatness and mechanical rigidity.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eConfiguration Breakdown — 350900-315\u003c\/h2\u003e\n\u003cp\u003eThe part number follows the structure \u003cstrong\u003e350900-AAA\u003c\/strong\u003e. The suffix identifies the integral cable length option.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e350900 — Base model\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Temperature Velocity and Acceleration Sensor (HTVAS)\u003c\/li\u003e\n\u003cli\u003eProvides velocity and acceleration outputs.\u003c\/li\u003e\n\u003cli\u003eSeparates the sensing head from its signal-conditioning electronics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e315 — Integral Cable Length Option\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eSpecified length: 315 inches\u003c\/li\u003e\n\u003cli\u003eMetric equivalent: approximately 8.0 metres\u003c\/li\u003e\n\u003cli\u003eIdentifies the selected integral cable configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOrdering guidance:\u003c\/strong\u003e Verify the complete part number and cable routing requirements before replacing an installed sensor. The 315 suffix specifies the integral cable length; it does not independently confirm monitor compatibility, hazardous-area approval, or the suitability of every mounting arrangement.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ch3\u003eGeneral and Electrical Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e350900-315\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct family\u003c\/td\u003e\n\u003ctd\u003e350900 HTVAS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eHigh Temperature Velocity and Acceleration Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of manufacture\u003c\/td\u003e\n\u003ctd\u003eMade in U.S.A. (as specified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegral cable length\u003c\/td\u003e\n\u003ctd\u003e315 in (approximately 8.0 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003e−18 to −30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply for hazardous-area approval options\u003c\/td\u003e\n\u003ctd\u003e−18 to −28 VDC; confirm the specific approval option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent current\u003c\/td\u003e\n\u003ctd\u003e6 mA nominal, no load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrounding\u003c\/td\u003e\n\u003ctd\u003eCase isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransverse sensitivity\u003c\/td\u003e\n\u003ctd\u003eLess than 5% of axial sensitivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplitude linearity\u003c\/td\u003e\n\u003ctd\u003e±1% to 4,900 m\/s² (500 g) peak overall acceleration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounted resonant frequency\u003c\/td\u003e\n\u003ctd\u003eGreater than 15 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum cable length\u003c\/td\u003e\n\u003ctd\u003e305 m (1,000 ft), subject to the specified system conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eVelocity Output\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e3.94 mV\/mm\/s (100 mV\/in\/s) ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response, ±5%\u003c\/td\u003e\n\u003ctd\u003e40 Hz to 1 kHz with 305 m (1,000 ft) of cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response, ±3 dB\u003c\/td\u003e\n\u003ctd\u003e25 Hz to 2 kHz with 305 m (1,000 ft) of cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput bias voltage\u003c\/td\u003e\n\u003ctd\u003e−10.0 ±2.0 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVelocity range\u003c\/td\u003e\n\u003ctd\u003e1,270 mm\/s (50 in\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBroadband noise floor, 5 Hz to 2 kHz\u003c\/td\u003e\n\u003ctd\u003e0.05 mm\/s RMS maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtended-temperature sensitivity stability\u003c\/td\u003e\n\u003ctd\u003eWithin ±10% up to +399°C sensor temperature; within ±15% up to +482°C, with electronics between −54°C and +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAcceleration Output\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e1.02 mV\/(m\/s²), equivalent to 10 mV\/g, ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response, ±5%\u003c\/td\u003e\n\u003ctd\u003e25 Hz to 4 kHz with 305 m (1,000 ft) of cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response, ±3 dB\u003c\/td\u003e\n\u003ctd\u003e10 Hz to 10 kHz with 305 m (1,000 ft) of cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput bias voltage\u003c\/td\u003e\n\u003ctd\u003e−10.0 ±2.0 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcceleration range\u003c\/td\u003e\n\u003ctd\u003e4,900 m\/s² (500 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBroadband noise floor, 5 Hz to 2 kHz\u003c\/td\u003e\n\u003ctd\u003e147 mm\/s² RMS (1.5 mg RMS) maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtended-temperature sensitivity stability\u003c\/td\u003e\n\u003ctd\u003eWithin ±10% up to +399°C sensor temperature; within ±15% up to +482°C, with electronics between −54°C and +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTest conditions:\u003c\/strong\u003e The supplied electrical specifications apply at +20°C to +30°C, with machine casing vibration at 100 Hz and a 10 kΩ load, unless otherwise stated. Frequency-response figures depend on the specified cable arrangement. Confirm the manufacturer's full specification when comparing performance under different loads or installation conditions.\u003c\/p\u003e\n\u003ch2\u003eTemperature Limits and Mechanical Installation\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eComponent or condition\u003c\/th\u003e\n\u003cth\u003eSpecified limit\u003c\/th\u003e\n\u003cth\u003eInstallation consideration\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing head\u003c\/td\u003e\n\u003ctd\u003e−54°C to +482°C (−65°F to +900°F)\u003c\/td\u003e\n\u003ctd\u003ePosition the sensing head at the measurement location without exceeding the rated temperature.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMineral-insulated cable\u003c\/td\u003e\n\u003ctd\u003e−54°C to +482°C (−65°F to +900°F)\u003c\/td\u003e\n\u003ctd\u003eRoute and secure the cable to prevent mechanical damage and avoid exceeding the rating.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-conditioning electronics\u003c\/td\u003e\n\u003ctd\u003e−54°C to +125°C (−65°F to +257°F)\u003c\/td\u003e\n\u003ctd\u003eLocate the electronics in an area that remains within their operating temperature limits.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectronics soak-back survivability\u003c\/td\u003e\n\u003ctd\u003e+155°C (+311°F) for four hours\u003c\/td\u003e\n\u003ctd\u003eSurvival does not guarantee electrical performance during this exposure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShock survivability\u003c\/td\u003e\n\u003ctd\u003e19,620 m\/s² (2,000 g) peak maximum\u003c\/td\u003e\n\u003ctd\u003eDo not interpret shock survivability as a continuous operating condition.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative humidity\u003c\/td\u003e\n\u003ctd\u003e100% condensing, non-submerged\u003c\/td\u003e\n\u003ctd\u003eThe case is hermetically sealed; this does not mean the sensor can operate submerged.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum use altitude\u003c\/td\u003e\n\u003ctd\u003e2,000 m (6,561 ft) above sea level\u003c\/td\u003e\n\u003ctd\u003eCheck site elevation against the stated operating limit.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting-hole pattern\u003c\/td\u003e\n\u003ctd\u003e30.2 mm (1.188 in) square\u003c\/td\u003e\n\u003ctd\u003eUse the specified four-hole mounting layout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting-hole diameter\u003c\/td\u003e\n\u003ctd\u003e7.2 mm (0.283 in)\u003c\/td\u003e\n\u003ctd\u003eVerify hole size and fastener fit before installation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting surface finish\u003c\/td\u003e\n\u003ctd\u003e32 microinch RMS\u003c\/td\u003e\n\u003ctd\u003ePrepare a flat, stable mounting surface to support reliable mechanical coupling.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eNickel alloy 600\u003c\/td\u003e\n\u003ctd\u003eCheck the manufacturer's installation drawing for material and assembly details.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutdoor installation\u003c\/td\u003e\n\u003ctd\u003eProtected enclosure with wiring protected in conduit is the standard arrangement\u003c\/td\u003e\n\u003ctd\u003eOptional splash boots may provide additional protection where required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eSystem Integration: Using Both Outputs Correctly\u003c\/h2\u003e\n\u003cp\u003eThe 350900 HTVAS is useful when a machine requires a velocity signal for protection while retaining an acceleration signal for diagnostic analysis. These outputs have different sensitivities and frequency-response ranges, so configure each input according to the intended measurement.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVelocity channel:\u003c\/strong\u003e Apply the specified sensitivity of 3.94 mV\/mm\/s when scaling and interpreting the velocity output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcceleration channel:\u003c\/strong\u003e Apply the specified sensitivity of 1.02 mV\/(m\/s²) when scaling and interpreting acceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel allocation:\u003c\/strong\u003e When connecting both outputs to a 3500\/42M or 3500\/44M, use the required separate channel pair, such as channels 1 and 3, or use separate monitors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable verification:\u003c\/strong\u003e The selected integral cable is approximately 8.0 m. Include the complete cable arrangement when checking the maximum permitted length and system response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower and grounding:\u003c\/strong\u003e Verify the required negative DC supply and confirm the case-isolated grounding arrangement against the installation documentation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not treat the velocity and acceleration outputs as interchangeable inputs. Their sensitivity, frequency range, scaling, and diagnostic purpose differ. Confirm the monitor channel type and configuration before connecting either signal.\u003c\/p\u003e\n\u003ch2\u003eEquipment and Application Scenarios\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-temperature rotating machinery:\u003c\/strong\u003e Applications where the measurement point approaches the sensing head's rated temperature limit and the electronics can remain within their own limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurbines and hot-section auxiliary equipment:\u003c\/strong\u003e Potential use where the OEM-approved measurement location and machinery monitoring design require vibration measurements at elevated temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial process equipment:\u003c\/strong\u003e Suitable for evaluated applications where both velocity-based monitoring and acceleration-based diagnostics provide useful condition information.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachinery using Bently Nevada 3500 monitoring systems:\u003c\/strong\u003e Primarily intended for the 3500\/42M and 3500\/44M, subject to the correct input arrangement and system configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote signal-conditioning installations:\u003c\/strong\u003e Useful when the sensing head must remain near a hot machine surface while the electronics sit in a cooler, accessible location.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese scenarios are application examples, not confirmation that every turbine, compressor, or machine accepts this sensor. Verify the machinery manufacturer's requirements, mounting arrangement, monitor compatibility, hazardous-area conditions, and expected vibration spectrum before selection.\u003c\/p\u003e\n\u003ch2\u003eField Diagnostics: What to Check When Readings Look Wrong\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSymptom\u003c\/th\u003e\n\u003cth\u003eLikely investigation area\u003c\/th\u003e\n\u003cth\u003eRecommended check\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVelocity and acceleration trends disagree\u003c\/td\u003e\n\u003ctd\u003eDifferent frequency ranges, channel scaling, or signal-processing settings\u003c\/td\u003e\n\u003ctd\u003eCheck each channel's sensitivity, units, frequency filtering, and measurement purpose before assuming a sensor failure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoth signals drift after a hot restart\u003c\/td\u003e\n\u003ctd\u003eTemperature exposure, mounting changes, cable stress, or electronics operating conditions\u003c\/td\u003e\n\u003ctd\u003eCompare actual sensing-head and electronics temperatures with their respective limits; inspect mounting and cable routing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOne output is missing while the other remains available\u003c\/td\u003e\n\u003ctd\u003eOutput-specific wiring, input configuration, or monitor channel issue\u003c\/td\u003e\n\u003ctd\u003eReview the affected channel's wiring and configuration against the manufacturer's drawing. Isolate the system safely before testing connections.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-frequency vibration appears inconsistent\u003c\/td\u003e\n\u003ctd\u003eAcceleration channel bandwidth, cable conditions, mounting rigidity, or monitor filtering\u003c\/td\u003e\n\u003ctd\u003eCheck the acceleration channel's response range, configured filters, mounting surface, and complete cable length.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReadings change after maintenance\u003c\/td\u003e\n\u003ctd\u003eSensor reinstallation, mounting surface condition, routing changes, or channel reassignment\u003c\/td\u003e\n\u003ctd\u003eConfirm the sensor is mounted correctly, wiring matches the original design, and channel assignments remain valid.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal problems appear after prolonged heat exposure\u003c\/td\u003e\n\u003ctd\u003eElectronics temperature or exposure beyond the specified operating conditions\u003c\/td\u003e\n\u003ctd\u003eReview temperature records. The +155°C four-hour soak-back rating describes survivability, not guaranteed measurement performance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eField-engineering recommendation:\u003c\/strong\u003e Record baseline readings for both outputs under stable operating conditions. During troubleshooting, compare each output independently, review monitor configuration, and correlate anomalies with machine speed and temperature. Follow site safety procedures and the manufacturer's test instructions before disconnecting protection channels.\u003c\/p\u003e\n\u003ch2\u003eGlobal PLC Spare HUB's Insight\u003c\/h2\u003e\n\u003cp\u003eThe key selection issue for the 350900-315 is thermal separation, not simply the sensor's maximum temperature rating. The sensing head and mineral-insulated cable can withstand higher temperatures than the signal-conditioning electronics, so the installation must control heat exposure across the entire assembly.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMap the thermal gradient:\u003c\/strong\u003e Measure or estimate temperatures at the sensing head, cable route, and electronics mounting location separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreserve dual-signal functionality:\u003c\/strong\u003e Decide which monitor channels will receive velocity and acceleration before installation, and verify their configuration individually.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReview frequency needs:\u003c\/strong\u003e The acceleration output extends to a higher specified frequency than the velocity output. Select and configure channels according to the diagnostic objective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck cable length end to end:\u003c\/strong\u003e The 315 suffix specifies an approximately 8.0 m integral cable. Verify the complete signal path against the maximum permitted cable length and performance requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate survival from performance:\u003c\/strong\u003e Short-duration electronics exposure at +155°C does not mean the unit maintains normal electrical performance at that temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a replacement inquiry, provide the complete part number, existing monitor model, intended channel arrangement, measured temperatures, and cable-routing requirements. These details help establish whether the replacement matches the installation rather than relying on the model name alone.\u003c\/p\u003e\n\u003ch2\u003eWarranty, Packing and Shipping\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct condition:\u003c\/strong\u003e New, original item, subject to order confirmation and availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-month warranty against qualifying product defects, subject to the applicable sales terms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of manufacture:\u003c\/strong\u003e USA, as specified for this product.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePacking:\u003c\/strong\u003e Protective packing suitable for industrial spare-part shipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping methods:\u003c\/strong\u003e FedEx, UPS, and DHL, subject to destination and service availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder verification:\u003c\/strong\u003e Confirm the full part number, required quantity, delivery destination, and any applicable export or documentation requirements before dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003e1. Why does the 350900 provide both velocity and acceleration instead of only one vibration output?\u003c\/h3\u003e\n\u003cp\u003eThe two outputs serve different monitoring purposes. Velocity supports machinery protection and overall vibration assessment, while acceleration provides a broader high-frequency response for diagnostic analysis. Using both can improve the information available to maintenance teams, provided each channel uses the correct sensitivity and configuration.\u003c\/p\u003e\n\u003ch3\u003e2. Can the electronics be mounted next to the sensing head at +482°C?\u003c\/h3\u003e\n\u003cp\u003eNo. The sensing head and mineral-insulated cable have a specified upper temperature limit of +482°C, while the electronics have a maximum operating temperature of +125°C. Plan the installation so the electronics remain within their own temperature range, including heat soak after shutdown.\u003c\/p\u003e\n\u003ch3\u003e3. How should I verify whether the 8.0 m cable version is long enough?\u003c\/h3\u003e\n\u003cp\u003eMeasure the actual route from the sensing head to the electronics and onward through the required monitoring connection. Allow for routing, securing, and service access, then verify the complete cable arrangement against the manufacturer's maximum cable-length and performance requirements. The 315 suffix alone does not guarantee suitability for every installation.\u003c\/p\u003e\n\u003ch3\u003e4. What information should I provide when requesting a replacement quotation?\u003c\/h3\u003e\n\u003cp\u003eProvide the complete part number, monitor model, required velocity and acceleration channels, cable length, operating temperatures, mounting details, and hazardous-area requirements if applicable. A photograph of the nameplate and existing installation can also help identify configuration differences before ordering.\u003c\/p\u003e\n\u003ch3\u003e5. Can I connect the velocity and acceleration outputs to adjacent channels on a 3500 monitor?\u003c\/h3\u003e\n\u003cp\u003eDo not assume that any two adjacent channels are acceptable. The supplied guidance requires the two outputs to use a separate channel pair, such as channels 1 and 3, or separate monitors. Confirm the applicable 3500\/42M or 3500\/44M configuration and wiring documentation before commissioning.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/350900_fb65f2c7-45ac-4327-9fd5-744aab50200b.png?v=1792049666\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":67644554346678,"sku":"350900-315","price":169.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/350900-3942_0a8a26b7-3eb0-461a-8e9a-5d190c0b11bf.jpg?v=1792049643","url":"https:\/\/www.plcsparehub.com\/products\/350900-315-bently-nevada-velocity-acceleration-sensor","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}