{"product_id":"631d11t8fh-mks-instruments-baratron-heated-capacitance-manometer","title":"631D11T8FH MKS Instruments Baratron Heated Capacitance Manometer","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eMKS Instruments 631D11T8FH\u003c\/strong\u003e\u003c\/span\u003e is a high-precision \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBaratron® Type 631D\u003c\/strong\u003e\u003c\/span\u003e heated absolute capacitance manometer engineered for demanding semiconductor and industrial vacuum processes. Operating with an internally regulated sensor temperature of either 150°C or 200°C, this vacuum pressure transducer prevents process gas condensation and minimizes zero drift in high-temperature chemical vapor deposition environments.\u003c\/p\u003e\n\u003cp\u003eConstructed with corrosion-resistant Inconel® and Incoloy® wetted surfaces, the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e631D11T8FH\u003c\/strong\u003e\u003c\/span\u003e delivers accurate absolute pressure measurements with a fast 50 msec response time. It outputs a clean, linear 0 to 10 VDC analog signal via a 15-pin D-sub interface while integrating dual adjustable process trip relays for direct interlock control.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eConfiguration \u0026amp; Part Number Architecture\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Series (\u003cspan style=\"color: #0056b3;\"\u003e631D\u003c\/span\u003e):\u003c\/strong\u003e MKS Baratron® Heated Absolute Capacitance Manometer platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Scale Range Identifier (\u003cspan style=\"color: #0056b3;\"\u003e11T\u003c\/span\u003e):\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e11:\u003c\/strong\u003e 10 Torr full-scale absolute measurement range (series supports 1, 2, 10, 30, 100, and 1000 Torr)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT:\u003c\/strong\u003e Measurement calibrated in Torr units\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting \u0026amp; Thermal Configuration (\u003cspan style=\"color: #0056b3;\"\u003e8FH\u003c\/span\u003e):\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e8:\u003c\/strong\u003e 8-VCR® female swivel mechanical vacuum port connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eF:\u003c\/strong\u003e 15-pin D-sub electrical analog and relay interface connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eH:\u003c\/strong\u003e High-temperature heated sensor configuration (200°C \/ 150°C regulated thermal control)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications Matrix\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter Category\u003c\/th\u003e\n\u003cth\u003eEngineering Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer \u0026amp; Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eMKS Instruments Baratron® Type 631D\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e631D11T8FH\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Principle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeated Absolute Capacitance Manometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries Pressure Ranges\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1, 2, 10, 30, 100, and 1000 Torr Full Scale (FS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Controlled Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150°C or 200°C regulated internal heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.50% of Reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution \u0026amp; Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.01% of Full Scale; 50 msec time constant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog Signal Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–10 VDC linear into \u0026gt;10 kΩ load via 15-pin D-sub connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProcess Trip Relays\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwo internal relays, independently adjustable from 0.5% to 100% FS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eZero Temp Coefficient\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150°C: 0.004% FS\/°C (0.008% for 1 Torr) | 200°C: 0.008% FS\/°C (0.016% for 1 Torr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpan Temp Coefficient\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.02% of Reading\/°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWetted Materials \u0026amp; Volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInconel® or Incoloy® nickel alloys; 6.3 cc internal volume\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverpressure Limit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45 psia (310 kPa) maximum safe burst limit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply Requirements\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±15 VDC (±5%) at 1.0 A maximum draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal \u0026amp; Airflow Limits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15°C to 50°C ambient; 50 ft\/min (150°C ver.) or 150 ft\/min (200°C ver.) at 45–50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarm-Up \u0026amp; Compliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 hours thermal stabilization time; CE certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Commissioning Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Stabilization:\u003c\/strong\u003e Allow a full 4-hour warm-up period after applying ±15 VDC power before zeroing the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e631D11T8FH\u003c\/strong\u003e\u003c\/span\u003e transducer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Management:\u003c\/strong\u003e Maintain minimum forced airflow of 150 ft\/min (for 200°C heaters) when cabinet ambient temperatures reach 45°C to 50°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess Plumbing:\u003c\/strong\u003e Mount the transducer vertically with the port pointing downward to prevent particulate or condensate accumulation inside the 6.3 cc cavity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Shielding:\u003c\/strong\u003e Use shielded twisted-pair cabling on the 15-pin D-sub connector and terminate into a high-impedance (\u0026gt;10 kΩ) readout input.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility, Warranty \u0026amp; Logistics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Compatibility:\u003c\/strong\u003e Integrates directly with \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eMKS Instruments\u003c\/strong\u003e\u003c\/span\u003e PDR2000 power supply readouts, Type 651 pressure controllers, and OEM tool racks; cross-compatible with modern 631F series footprints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Coverage:\u003c\/strong\u003e Supplied with a comprehensive 12-month operational warranty from the shipment date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Express Shipping:\u003c\/strong\u003e Immediate international dispatch available via \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eFedEx, UPS, and DHL\u003c\/strong\u003e\u003c\/span\u003e priority courier networks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eMKS Instruments 631D11T8FH\u003c\/strong\u003e\u003c\/span\u003e Heated Baratron® Capacitance Manometer\u003c\/li\u003e\n\u003cli\u003e1 x Protective vacuum port shipping cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Why is a 4-hour warm-up period mandatory before performing a zero adjustment on the 631D11T8FH?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA1: The internal heater must bring the Inconel® diaphragm and capacitance electrode assembly to exact thermal equilibrium at 150°C or 200°C. Zeroing prematurely causes baseline drift as the metallic structure continues expanding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: What happens if the transducer experiences accidental atmospheric venting above its 10 Torr full-scale range?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA2: The sensor diaphragm withstands up to 45 psia (310 kPa) overpressure without permanent mechanical damage. Once re-evacuated below 10⁻⁴ Torr, verify the zero offset before resuming process runs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: How should engineers configure the two internal trip relays for vacuum chamber safety interlocks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA3: Use a precision digital voltmeter at the test points while adjusting the multi-turn potentiometers to set trip thresholds anywhere between 0.5% and 100% of full scale for roughing valve or throttle control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Can this capacitance manometer measure corrosive plasma etch gases accurately regardless of gas species?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA4: Yes, because capacitance manometers measure direct physical force exerted on an Inconel® diaphragm, readings remain completely independent of gas composition or thermal conductivity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Buying Guidance: Should I source a direct 631D11T8FH drop-in unit or upgrade to the MKS 631F series?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA5: Choose the exact \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e631D11T8FH\u003c\/strong\u003e\u003c\/span\u003e model to maintain validated OEM tool recipes, existing 15-pin D-sub pinouts, and mechanical clearance without software or hardware requalification. Transition to the 631F series only when building new tool platforms or conducting full chamber retrofits.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/631D.png?v=1794542479\" alt=\"\"\u003e\u003c\/p\u003e","brand":"MKS Instruments","offers":[{"title":"Default Title","offer_id":68057989251254,"sku":"631D11T8FH","price":336.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/631D11T8FHBB-3.jpg?v=1794542544","url":"https:\/\/www.plcsparehub.com\/products\/631d11t8fh-mks-instruments-baratron-heated-capacitance-manometer","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}