{"product_id":"bently-nevada-135613-01-00-expansion-transducer-assembly","title":"Bently Nevada 135613-01-00 Expansion Transducer Assembly","description":"\u003cp\u003eThe \u003cstrong\u003eBently Nevada 135613-01-00\u003c\/strong\u003e operates as a rugged, heavy-duty industrial sensor assembly belonging to the High Temperature Case Expansion (HTCE) product line. This hardware asset is utilized to monitor structural thermal growth on large rotating machinery, specifically tracking shell-to-rotor movement and casing expansion variables on steam turbines, gas turbines, and large industrial pumps within Turbine Supervisory Instrumentation (TSI) layouts.\u003c\/p\u003e\n\u003ch3\u003eHardware 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\u003eProduct Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e135613-01-00\u003c\/td\u003e\n\u003c\/tr\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\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh Temperature Case Expansion Transducer Assembly (DC-powered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLinear Range Option (01)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25.4 mm (1.0 in) linear travel path with an included 127 mm (5.00 in) rod\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpring Return Option (00)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithout spring return (requires rigid mechanical linkage\/anchorage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Scale Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.20 V\/mm (5.0 V\/in) electrical output slope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Linear Measurement Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25.4 mm (1.00 in) total stroke\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response (-3 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBaseline Stability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.125% of full-scale tracking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNon-Linearity Boundary\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25% of full-scale limits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Drift Coefficient\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.05% per °C (0.028% per °F) maximum variance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature Envelope\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-25°C to +85°C (-13°F to +185°F) structural limits\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-55°C to +125°C (-67°F to +257°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApproximate Dimensions (H x W x L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8.89 cm x 11.7 cm x 24.1 cm (3.50 in x 4.60 in x 9.50 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Assembly Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.30 kg (5.07 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEstimated Shipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.50 kg (7.72 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited States (Made in U.S.A.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMechanical Monitoring and TSI Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 135613-01-00 transducer converts macro-level mechanical displacement into a highly linear, proportional DC voltage. When a massive steam turbine transitions from cold startup to full running temperatures, the machine casing expands significantly due to thermal stresses.\u003c\/p\u003e\n\u003cp\u003eBecause the \"00\" spring option designates a configuration \u003ci\u003ewithout\u003c\/i\u003e a spring return, the internal rod assembly does not rely on a spring-loaded tip riding against a surface. Instead, the 127 mm (5.00 in) rod must be rigidly coupled or mechanically linked directly to the moving component of the turbine structure. As the casing grows or moves, it mechanically shifts the internal DC Linear Variable Differential Transformer (LVDT) core.\u003c\/p\u003e\n\u003cp\u003eThe sensor converts this physical stroke across its 25.4 mm range into a steady voltage profile using its $0.20\\text{ V\/mm}$ scale factor. This real-time positioning loop passes back to a dedicated 3500\/45 Position Monitor module, ensuring continuous connection tracking and protection against stress fractures or binding along the structural sliding feet of the machine.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the primary difference between a case expansion transducer \"with\" a spring return and this \"without spring return\" (00) variant?\u003c\/p\u003e\n\u003cp\u003eA: A spring-return transducer relies on internal tension to keep its probe tip compressed against a shifting machinery plate, which is useful for flat-surface touch points. This version without a spring return (Option 00) requires a rigid mechanical pin or clevis connection at the end of the 127 mm rod, forcing it to follow both forward expansion and backward retraction positively.\u003c\/p\u003e\n\u003cp\u003eQ: How is the raw output signal of this transducer calibrated within the 3500 monitoring system?\u003c\/p\u003e\n\u003cp\u003eA: Because the scale factor is precisely set at $0.20\\text{ V\/mm}$, every 5-volt change in the signal indicates exactly 25.4 mm (1 inch) of total structural displacement. Field engineers map the zero-point voltage (typically center-stroke) in the 3500 Rack Configuration software to establish precise absolute tracking baselines for turbine growth.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45064798437491,"sku":"135613-01-00","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-06-03_16-57-08_f767c77f-48cc-4b73-836f-10e7dbcbbbda.png?v=1780477998","url":"https:\/\/www.dcssupplier.com\/products\/bently-nevada-135613-01-00-expansion-transducer-assembly","provider":"DcsSupplier Limited","version":"1.0","type":"link"}