{"product_id":"627h21tbc1b-mks-instruments-627h-heated-baratron-pressure-transducer","title":"627H21TBC1B MKS Instruments 627H Heated Baratron Pressure Transducer","description":"\u003ch3\u003e\u003cstrong\u003e627H21TBC1B | Heated Absolute Pressure Measurement\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #1565c0;\"\u003eMKS Instruments 627H21TBC1B\u003c\/span\u003e\u003c\/strong\u003e is a heated absolute pressure transducer from the \u003cstrong\u003e627H (600 Series)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis model measures absolute pressure across a \u003cstrong\u003e20 Torr full-scale range\u003c\/strong\u003e. Its sensor operates at a controlled temperature of \u003cstrong\u003e45°C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe heated design helps maintain stable sensor temperature during pressure measurement. Vertical calibration supports installations that require a defined calibration orientation.\u003c\/p\u003e\n\u003cp\u003eThe instrument provides a \u003cstrong\u003e0 to +10 VDC analog output\u003c\/strong\u003e. It operates from a ±15 VDC power supply and uses an Inconel wetted construction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModel Identification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e MKS Instruments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #1565c0;\"\u003e627H21TBC1B\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Family:\u003c\/strong\u003e 627H (600 Series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument Type:\u003c\/strong\u003e Heated Baratron Absolute Pressure Transducer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Range:\u003c\/strong\u003e 0–20 Torr absolute\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Temperature:\u003c\/strong\u003e 45°C controlled\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration Orientation:\u003c\/strong\u003e Vertical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Signal:\u003c\/strong\u003e 0 to +10 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess Connection:\u003c\/strong\u003e 8 VCR Female\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e01 | Measurement Architecture and Performance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe 627H21TBC1B uses a heated Baratron measurement platform. It measures absolute pressure rather than gauge or differential pressure.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Parameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Type\u003c\/td\u003e\n\u003ctd\u003eAbsolute Pressure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull-Scale Range\u003c\/td\u003e\n\u003ctd\u003e20 Torr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e0.12% of Reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.001% of Full Scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNon-Linearity\u003c\/td\u003e\n\u003ctd\u003eIncluded in specified accuracy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHysteresis\u003c\/td\u003e\n\u003ctd\u003eIncluded in specified accuracy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNon-Repeatability\u003c\/td\u003e\n\u003ctd\u003eIncluded in specified accuracy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarm-Up Time\u003c\/td\u003e\n\u003ctd\u003e2 Hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration Position\u003c\/td\u003e\n\u003ctd\u003eVertical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurement Accuracy:\u003c\/strong\u003e The specified accuracy is 0.12% of reading. This specification includes non-linearity, hysteresis, and non-repeatability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurement Resolution:\u003c\/strong\u003e The stated resolution equals 0.001% of full scale. At 20 Torr, this corresponds to 0.0002 Torr.\u003c\/p\u003e\n\u003cp\u003eResolution describes the smallest specified measurement increment. It does not represent absolute measurement accuracy.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e02 | Thermal Control and Measurement Stability\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe sensor maintains a controlled temperature of \u003cstrong\u003e45°C\u003c\/strong\u003e. This heated configuration helps reduce measurement variations associated with sensor temperature changes.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Parameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControlled Sensor Temperature\u003c\/td\u003e\n\u003ctd\u003e45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e15 to 40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarm-Up Time\u003c\/td\u003e\n\u003ctd\u003e2 Hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero Temperature Coefficient\u003c\/td\u003e\n\u003ctd\u003e0.002% FS\/°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpan Temperature Coefficient\u003c\/td\u003e\n\u003ctd\u003e0.02% of Reading\/°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eEngineering Considerations:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAllow the full two-hour warm-up period before critical measurements.\u003c\/li\u003e\n\u003cli\u003eMaintain ambient temperature within the specified operating range.\u003c\/li\u003e\n\u003cli\u003eAvoid rapid temperature changes around the instrument.\u003c\/li\u003e\n\u003cli\u003eCheck zero stability after thermal stabilization.\u003c\/li\u003e\n\u003cli\u003eEvaluate span deviation when ambient conditions change.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe sensor temperature and ambient operating temperature describe different conditions. The 45°C internal setting does not change the specified 15–40°C ambient limit.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e03 | Electrical Interface and Signal Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe transducer provides an analog voltage signal for pressure monitoring systems. Its electrical interface supports integration with compatible industrial measurement equipment.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical Parameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e±15 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Tolerance\u003c\/td\u003e\n\u003ctd\u003e±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current\u003c\/td\u003e\n\u003ctd\u003e0.25 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Output\u003c\/td\u003e\n\u003ctd\u003e0 to +10 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Load Impedance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;10 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Connector\u003c\/td\u003e\n\u003ctd\u003e15-Pin D-Sub\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Retention\u003c\/td\u003e\n\u003ctd\u003eThread Locks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrip Points\u003c\/td\u003e\n\u003ctd\u003eNot Available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater Status LED\u003c\/td\u003e\n\u003ctd\u003eNot Available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eAnalog Signal Interpretation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAssuming a linear 0–10 V output across the 0–20 Torr range:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e0 V corresponds to 0 Torr.\u003c\/li\u003e\n\u003cli\u003e2.5 V corresponds to 5 Torr.\u003c\/li\u003e\n\u003cli\u003e5 V corresponds to 10 Torr.\u003c\/li\u003e\n\u003cli\u003e7.5 V corresponds to 15 Torr.\u003c\/li\u003e\n\u003cli\u003e10 V corresponds to 20 Torr.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse the actual instrument transfer function when configuring the receiving system. Verify the output scaling before commissioning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePLC and Data Acquisition Integration:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse a compatible voltage input channel.\u003c\/li\u003e\n\u003cli\u003eConfirm the input impedance exceeds 10 kΩ.\u003c\/li\u003e\n\u003cli\u003eProvide the required bipolar ±15 VDC supply.\u003c\/li\u003e\n\u003cli\u003eVerify signal common and grounding arrangements.\u003c\/li\u003e\n\u003cli\u003eUse shielded wiring where the installation requires it.\u003c\/li\u003e\n\u003cli\u003eCheck electrical noise before adjusting measurement scaling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e04 | Process Connection and Wetted Construction\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe pressure boundary uses \u003cstrong\u003eInconel wetted materials\u003c\/strong\u003e. The process connection features an 8 VCR female fitting.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMechanical Parameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWetted Material\u003c\/td\u003e\n\u003ctd\u003eInconel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcess Fitting\u003c\/td\u003e\n\u003ctd\u003e8 VCR Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Volume\u003c\/td\u003e\n\u003ctd\u003e6.3 cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverpressure Limit\u003c\/td\u003e\n\u003ctd\u003e45 psia (310 kPa) or 120% FS, whichever is greater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e3.15 in (80.0 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Height\u003c\/td\u003e\n\u003ctd\u003e3.87 in (98.4 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStem Length\u003c\/td\u003e\n\u003ctd\u003e1.38 in (35.1 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Space:\u003c\/strong\u003e Allow sufficient clearance for the sensor body, stem, process fitting, and electrical connector.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePressure Protection:\u003c\/strong\u003e The overpressure limit does not represent a normal operating pressure range. Avoid pressure excursions beyond the specified limit.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e05 | Installation and Commissioning Procedure\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMechanical Installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eConfirm the mounting position matches the vertical calibration orientation.\u003c\/li\u003e\n\u003cli\u003eCheck the 8 VCR female connection against the process line.\u003c\/li\u003e\n\u003cli\u003eInspect sealing surfaces before connecting the pressure line.\u003c\/li\u003e\n\u003cli\u003eUse compatible VCR sealing components.\u003c\/li\u003e\n\u003cli\u003eAvoid excessive mechanical loading on the instrument body.\u003c\/li\u003e\n\u003cli\u003eKeep the installation within the specified pressure limits.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eVerify the bipolar ±15 VDC power supply.\u003c\/li\u003e\n\u003cli\u003eCheck supply polarity and voltage tolerance.\u003c\/li\u003e\n\u003cli\u003eInspect the 15-pin D-sub connector.\u003c\/li\u003e\n\u003cli\u003eSecure the connector using its thread locks.\u003c\/li\u003e\n\u003cli\u003eConnect the analog output to a suitable voltage input.\u003c\/li\u003e\n\u003cli\u003eVerify signal common and grounding arrangements.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eCommissioning Sequence\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eApply the specified power supply.\u003c\/li\u003e\n\u003cli\u003eAllow at least two hours for warm-up.\u003c\/li\u003e\n\u003cli\u003eConfirm stable ambient temperature.\u003c\/li\u003e\n\u003cli\u003eCheck the zero-pressure reference under suitable conditions.\u003c\/li\u003e\n\u003cli\u003eApply known pressure points using a calibrated reference.\u003c\/li\u003e\n\u003cli\u003eCompare the output voltage with the expected pressure.\u003c\/li\u003e\n\u003cli\u003eConfirm the receiving controller displays the correct engineering units.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e\u003cstrong\u003e06 | Diagnostic Checks and Maintenance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePractical Troubleshooting Reference\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eObserved Condition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Inspection\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo Analog Output\u003c\/td\u003e\n\u003ctd\u003eCheck ±15 VDC supply, connector wiring, and receiving input.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Does Not Reach Expected Value\u003c\/td\u003e\n\u003ctd\u003eVerify pressure reference and analog scaling.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero Reading Drifts\u003c\/td\u003e\n\u003ctd\u003eCheck warm-up completion and ambient temperature stability.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnstable Pressure Display\u003c\/td\u003e\n\u003ctd\u003eInspect pressure connections, grounding, and signal wiring.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlow Stabilization\u003c\/td\u003e\n\u003ctd\u003eCheck thermal stabilization and process pressure conditions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnexpected Calibration Deviation\u003c\/td\u003e\n\u003ctd\u003eVerify mounting orientation and calibration reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eMaintenance Recommendations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInspect process fittings during scheduled maintenance.\u003c\/li\u003e\n\u003cli\u003eCheck supply voltage before investigating measurement errors.\u003c\/li\u003e\n\u003cli\u003eKeep the electrical connector clean and secure.\u003c\/li\u003e\n\u003cli\u003eRecord zero and span verification results.\u003c\/li\u003e\n\u003cli\u003eUse suitable reference equipment for calibration checks.\u003c\/li\u003e\n\u003cli\u003eFollow MKS service procedures for internal repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis model has no trip points or heater status LED. Engineers should verify operating conditions through external measurements and system diagnostics.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e07 | Application and System Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe 20 Torr absolute measurement range suits low-pressure monitoring applications. The analog output supports integration with compatible pressure monitoring systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSemiconductor Equipment:\u003c\/strong\u003e Pressure monitoring in compatible process chambers and vacuum equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVacuum Systems:\u003c\/strong\u003e Absolute pressure measurement within the configured range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThin-Film Processes:\u003c\/strong\u003e Pressure feedback for suitable deposition equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Delivery Systems:\u003c\/strong\u003e Pressure monitoring in compatible low-pressure gas lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Instrumentation:\u003c\/strong\u003e Analog pressure measurement through PLC and data acquisition interfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eApplication suitability depends on process gas compatibility, pressure conditions, installation design, and required measurement performance.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e08 | Model Selection and Ordering Verification\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eSeveral configuration details determine whether this instrument matches an existing installation. Verify the complete model number before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Range:\u003c\/strong\u003e Confirm the required 20 Torr full scale.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Type:\u003c\/strong\u003e Verify absolute pressure measurement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Configuration:\u003c\/strong\u003e Confirm the 45°C sensor temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e Check the vertical calibration requirement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e Confirm the 0–10 VDC signal interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e Verify the ±15 VDC supply availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Confirm the 8 VCR female fitting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Check Inconel compatibility with the process.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOrdering Tip:\u003c\/strong\u003e A matching 20 Torr range alone does not guarantee interchangeability. Compare the electrical interface, calibration orientation, heating configuration, and process connection.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e09 | Compliance and Package Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCE compliant.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the applicable declaration and documentation for the exact supplied configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 × \u003cstrong\u003eMKS Instruments 627H21TBC1B\u003c\/strong\u003e Heated Baratron Pressure Transducer.\u003c\/li\u003e\n\u003cli\u003eAdditional accessories and documentation depend on the confirmed order configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePower cables, mating connectors, calibration certificates, and mounting accessories require separate confirmation.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e10 | Technical FAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Why does the installation require vertical calibration orientation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCalibration orientation defines the reference position for specified measurement performance. Mechanical orientation can affect pressure sensor readings in certain designs.\u003c\/p\u003e\n\u003cp\u003eInstall the instrument in its specified vertical position. If the equipment requires another orientation, consult MKS before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: How should engineers distinguish sensor resolution from system accuracy?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eResolution describes the smallest specified measurement increment. Accuracy describes how closely the measured value represents the actual pressure.\u003c\/p\u003e\n\u003cp\u003eFor this model, resolution is 0.0002 Torr. Its specified accuracy is 0.12% of reading.\u003c\/p\u003e\n\u003cp\u003ePLC input resolution and signal noise can reduce the effective measurement resolution of the complete system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What can cause an incorrect pressure reading after replacing the transducer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCommon causes include incorrect signal scaling, unsuitable mounting orientation, and incompatible power supplies.\u003c\/p\u003e\n\u003cp\u003eEngineers should also check the 8 VCR connection and the receiving instrument configuration.\u003c\/p\u003e\n\u003cp\u003eCompare the analog output against a calibrated pressure reference before changing controller parameters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Why should engineers wait two hours before performing calibration checks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe internal sensor uses controlled heating at 45°C. Its thermal condition needs time to stabilize after power-up.\u003c\/p\u003e\n\u003cp\u003ePerforming calibration checks too early can introduce misleading zero or span deviations.\u003c\/p\u003e\n\u003cp\u003eAllow the specified warm-up period before evaluating measurement performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: What should buyers verify when selecting this model for vacuum equipment?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFirst, confirm that 20 Torr absolute pressure covers the actual process operating range.\u003c\/p\u003e\n\u003cp\u003eNext, verify the vertical calibration, 45°C heating configuration, and 0–10 VDC output.\u003c\/p\u003e\n\u003cp\u003eCheck the available ±15 VDC supply and 8 VCR female connection. Also confirm Inconel compatibility with the process media.\u003c\/p\u003e\n\u003cp\u003eFor replacement projects, provide the original nameplate photograph and equipment interface details before ordering.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/627H.png?v=1794207658\" alt=\"\"\u003e\u003c\/p\u003e","brand":"MKS Instruments","offers":[{"title":"Default Title","offer_id":68019605536950,"sku":"627H21TBC1B","price":214.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/627H21TBC1B.jpg?v=1794207779","url":"https:\/\/www.plcsparehub.com\/products\/627h21tbc1b-mks-instruments-627h-heated-baratron-pressure-transducer","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}