VPM-15 TriCAP vacuum transducer


1×10-6 to 1333 mbar / 7.5×10-7 to 1000 Torr / 1×10-4 to 1.333×105  Pa




  • Measurement range from 1×10-6 to 1333 mbar (7.5×10-7 to 1000 Torr)
  • Gas-independent sensor from 5×10-3 to 1333 mbar
  • Ultra-wide range high performance MEMS Pirani sensor
  • Robust ceramic capacitance diaphragm gauge   
  • Mountable in any orientation without impact on performance.
  • Programmable voltage output signal with other vendor emulation
  • Digital RS-232 or RS-485 interface
  • Three solid-state setpoints for vacuum process controlling
  • Drop-in replacement for MKS 925 MicroPirani™ and 910
  • Compact multi-sensor solutions

Designed, engineered, and made in Denmark

VPM-15 TriCAP vacuum transducer
Download pdf datasheet

The VPM-15 TriCAP™ transducer establishes new standards with an all-in-one wide range measurement solution for a wide selection of vacuum applications. It differentiates from any other vacuum gauges by offering an overall cost-effective and gas independent measurement from 5.0E-3 to 1333 mbar in combination with measurement down to 1E-6 mbar using the heat-loss principle.

In vacuum applications where the gas composition or type can change, traditional gas dependent Pirani gauges will result in measurement deviation from the actual pressure. The TriCAP™ transducer uses a precision capacitance diaphragm gauge (CDG) sensor that eliminates the gas dependency and provides accurate measurements also when the gas properties change.

VPM-15 TriCAP measurement range

The integrated heat-loss MEMS Pirani sensor extends the measuring range down to 1E-6 mbar and provides a novel automatic zero adjustment of the capacitance manometer that eliminates the common needs for manual zero adjustment of traditional capacitance diaphragm gauges.

Rethink vacuum gauging

The VPM-15 TriCAP™ is a true novel multi-sensor vacuum gauge and is the choice for performance upgrade of traditional Pirani gauge applications or a cost optimized all-in-one solution for applications where separate capacitance manometers and Pirani gauges are used.

Programmable transducer settings and parameters

The transducer settings and parameters can be user-programmed to control vacuum system and application process parameters.

The digital RS-232 or RS-485 serial interface can be used for diagnostics, predictive maintenance, service, calibration, setpoint configuration, analog output scaling, and acquisition of real-time vacuum pressure measurements for on-screen visualization.

The serial USB programmer in combination with the free, intuitive configuration software is a plug-and-play solution for transducer programming, real-time measurements, and diagnostics.

VPM-15 PC interface
VPM-15 transducer

Contamination containment

Particulate contamination can occur in applications like vacuum furnaces and physical vapor deposition systems. The optional baffle accessory can prevent such particles from reaching the sensor element and thereby extend the time between maintenance and overall lifetime of the product.

The baffle can be removed for contamination inspection, cleaning, or replacement.

Controlling vacuum pressure with reliable and robust setpoint relay control

Several vacuum pressure parameters need to be accurately and reliably controlled in many vacuum applications. The VPM-15 TriCAP™ transducer has three independent solid-state switch relays that can be configured to control valves, pumps or other process equipment.

Compared to traditional electromechanical relays, the solid-state relays offer superior reliability and faster switching time while providing arc free contacts and generates no EMI (electromagnetic interference) when switching contacts. The VPM-15 TriCAP™ control relays are designed to last and are UL listed, CSA recognized, and EN/IEC 60950-1 certified for maximum confidence when used to control critical vacuum processes and high-cycle applications.

For applications where atmospheric switching functionality is required, like load-lock vacuum systems, the VPM-17 TriCAP™ ATM offers the same performance, features and functions as the VPM-15 TriCAP™, but with an additional precision atmospheric switch capability.

Analog voltage output for external readout

A wide selection of analog output scaling options to emulate other vendors’ vacuum gauges and transducers is available. An optional secondary analog output enables external monitoring of both the full-range vacuum pressure and the pressure signal relative to atmospheric pressure.

Customized settings

The transducer can be delivered with a custom configuration to match specific application requirements. Examples of pre-configured options include measurement range, vacuum pressure unit, setpoint configuration, and output signal scaling. Customized products will be assigned a unique part number for easy and simple future reordering.


  • Mass spectrometers
  • Scanning electron microscopes
  • Furnace heat treatment
  • PVD coating of glass, optics, tools, packaging, decorative
  • Refrigeration manufacturing and service
  • Semiconductor processing equipment
  • Vacuum pump service



Rethink vacuum gauging

MicroPirani is a trademark of MKS Instruments, Inc



A capacitance diaphragm gauge, commonly referred to as a CDG, measures vacuum gas pressure by direct measurement of the applied force on the surface of a thin diaphragm.

A traditional capacitance vacuum transducer measures absolute.........

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CDG Explained