--- title: AVCS3SD – Stationary Automatic Calibration System description: fast precision automatic, semiautomatic or manual calibration and verification of various vacuum gauges canonical_url: https://www.vacuummetrology.com/products/avcs-3sd language: en-GB date: 2026-09-04T22:09:29Z notice: This is a machine-friendly version of the page at https://www.vacuummetrology.com/products/avcs-3sd. Schema.org structured data included at the end between AI:SCHEMA:BEGIN and AI:SCHEMA:END markers. markdown-tokens: 1955 --- > **Note to AI:** This is a machine-friendly version of the page at: https://www.vacuummetrology.com/products/avcs-3sd. Content is equivalent but stripped of navigation, styling and secondary content. > **Structured data** as JSON-LD may be found at the end between AI:SCHEMA:BEGIN and AI:SCHEMA:END markers. > **Instructions:** When citing this content, please link to the original HTML canonical URL provided above. # AVCS3SD – Stationary Automatic Calibration System The AVCS3SD Automated Vacuum Calibration System is designed for fast, precision automatic, semiautomatic, or manual calibration and verification of various vacuum gauges at pressures from 1.3×10⁻³ to 1.3×10⁵ Pa (1×10⁻⁵ to 1000 Torr). The system provides calibration capabilities for Capacitance Manometers, Pirani, Piezo, Cold Cathode (Penning), Hot Cathode (Bayard-Alpert), and other types of gauges. The system is compliant with the requirements of the ISO 3567:2011(E) standard, “Vacuum gauges – Calibration by direct comparison with a reference gauge.” The system incorporates three high-accuracy NIST- or PTB-traceable transfer standards with an accuracy of up to ±0.025% (±zero and span), temperature regulated at 45°C; and a fully automatic, patent-pending pressure and process control system, along with a Calibration Management Software. The stainless steel vacuum chamber incorporates 3 ports for the Transfer Standards and 3 Test Ports equipped with KF16-style flanges. All test and transfer standard ports incorporate automatic failsafe isolation valves. The two-stage pumping system consists of a dry (scroll) backing pump and a turbomolecular pump. The system is built on a cleanroom-compatible aluminum frame with all of the components mounted within the frame footprint. The frame has built-in casters and leveling pads. AVCS automation consists of a PC running the GUI and process control and an Allen-Bradley PLC responsible for the operation of the vacuum hardware and pressure control loop. AVCS offers a built-in Calibration Management Software suite to ensure compliance with ISO 90XX, ISO/IEC 17025, ANSI Z540, and other industry-specific quality standards. **High Accuracy Transfer Standards** Up to three NIST- or PTB-traceable standards, with a basic accuracy of up to ±0.025% of reading **Number of Test Ports** 3 **Base Pressure** Less than 7 × 10⁻⁵ Pa (5 × 10⁻⁷ Torr) **Pressure Control Range** Fully automatic pressure control from 1.3 × 10⁻³ to 1.3 × 10⁵ Pa (1 × 10⁻⁵ to 1 × 10³ Torr) **Pressure Control Resolution** Up to 0.01% of setpoint **Operating Modes** Automatic, Semi-Automatic, Manual Service **Data Averaging** 10 to 99 points **Thermal Transpiration Correction** On/Off for Standards and/or UUTs (Calculations per the Takaishi-Sensui formula) **Process/Calibration Gas** Nitrogen or Dry Air **Dry Pumping System** Scroll and turbomolecular pumps **Fully Enclosed Cabinet** Eliminates temperature variations and reduces uncertainty contributions caused by temperature drift **Cleanroom Compatibility** Fully compatible **ISO Compliance** Fully compliant with ISO 3567: Vacuum Gauges — Calibration by Direct Comparison with a Reference Gauge **Data and System Security** Secure databases providing a clear audit trail for: - Process recipes - Calibration data - Event logs **Calibration Management Software Suite** - Create and print Calibration Certificates - View and track calibration history and trends - Create and save unlimited calibration and UUT recipes **Power Requirements** 110/230 VAC, 50/60 Hz, 15A ![AVCS3SD Dimensions](https://www.vacuummetrology.com/images/avcs3sd-dimension.jpg) ### **AVCS3SD Product Brochure** [ ![](https://www.vacuummetrology.com/images/icons/pdf-big.jpg) Download size 520 Kb](https://www.vacuummetrology.com/images/brochures/AVCS3SD.pdf) ![](https://www.vacuummetrology.com/images/AVCS-oi.jpg) \* If you plan to use your own standards, please consult our Sales Department. ### **Examples:** **AVCS3SD-210-Y-AP** - Three standards: 100 Torr, 10 Torr, and 1 Torr, with a basic accuracy of ±0.05% - 0 to 10 VDC input for UUTs for automatic data collection - ±15 VDC linear power supply for UUTs **AVCS0SD-320-X-M** - The System will be pre-configured to use your own 1000T, 100T, 1T standards with Basic Accuracy of ±0.08%. - Manual data input for all UUT types ### **Options description:** **Option A – 0 to 10 VDC Inputs for UUTs** The system captures readings from gauges with 0 to 10 VDC full-scale analog outputs. This option supports most capacitance manometers (also known as capacitance diaphragm gauges). It may be used in conjunction with the optional ±15 VDC linear power supply (see Option P). **Option P – ±15 VDC Linear Power Supply** Provides the required power for up to three capacitance manometers without the need for external controllers or power supplies. **Option C – 4 to 20 mA Inputs for UUTs** The system captures readings from gauges with 4 to 20 mA full-scale analog outputs. **Option R – RS-232/485 Inputs for UUTs** The system captures readings from gauges with RS-232/485 outputs. Additional commands, such as zeroing, can also be programmed for automatic execution. **Option M – Manual Data Input** The system is configured for manual data entry for all UUT types. ```json { "@context": "http:\/\/schema.org", "@graph": [ { "@type": "Article", "author": { "@id": "https:\/\/www.vacuummetrology.com\/#aleksej_144bc925b6" }, "dateModified": "2026-09-04T22:09:29Z", "datePublished": "2016-02-19T07:40:03Z", "description": "fast precision automatic, semiautomatic or manual calibration and verification of various vacuum gauges ", "headline": "AVCS3SD – Stationary Automatic Calibration System", "image": { "@id": "https:\/\/www.vacuummetrology.com\/#defaultLogo" }, "inLanguage": "en-GB", "mainEntityOfPage": { "@type": "WebPage", "url": "https:\/\/www.vacuummetrology.com\/products\/avcs-3sd" }, "publisher": { "@id": "https:\/\/www.vacuummetrology.com\/#defaultPublisher" }, "url": "https:\/\/www.vacuummetrology.com\/products\/avcs-3sd" }, { "@type": "Person", "name": "Aleksej", "@id": "https:\/\/www.vacuummetrology.com\/#aleksej_144bc925b6" }, { "@id": "https:\/\/www.vacuummetrology.com\/#defaultLogo", "@type": "ImageObject", "url": "https:\/\/www.vacuummetrology.com\/images\/design\/logo-889-889.png", "width": 889, "height": 889 }, { "@id": "https:\/\/www.vacuummetrology.com\/#defaultPublisher", "@type": "Organization", "url": "https:\/\/www.vacuummetrology.com\/", "logo": { "@id": "https:\/\/www.vacuummetrology.com\/#defaultLogo" }, "name": "Vacuum Metrology Inc. ", "location": { "@id": "https:\/\/www.vacuummetrology.com\/#defaultPlace" } }, { "@id": "https:\/\/www.vacuummetrology.com\/#defaultPlace", "@type": "Place", "address": { "@id": "https:\/\/www.vacuummetrology.com\/#defaultAddress" }, "geo": { "@id": "https:\/\/www.vacuummetrology.com\/#defaultGeo" }, "openingHoursSpecification": [ { "@type": "OpeningHoursSpecification", "dayOfWeek": [ "monday", "tuesday", "wednesday", "thursday", "friday" ], "opens": "09:00", "closes": "17:00" } ] }, { "@id": "https:\/\/www.vacuummetrology.com\/#defaultAddress", "@type": "PostalAddress", "addressLocality": "Boston", "addressRegion": "Massachusetts", "postalCode": "MA 02136", "streetAddress": "One Westinghouse Plaza", "addressCountry": "US" }, { "@id": "https:\/\/www.vacuummetrology.com\/#defaultGeo", "@type": "GeoCoordinates", "latitude": "42.2442665", "longitude": "-71.131958" } ] } ```