Absolute Pressure 200 mbar to 0.1 mbar (=hPa), 150 Torr to 0.1 Torr

The VCC200 capacitance vacuum transducer is used for measuring absolute pressure with high accuracy and independent of gas type even below 20 mbar. Due to its durable ceramic sensor it is nearly insensitive to dirt and contamination.

Benefits

• Excellent accuracy
• High resolution
• Corrosion resistant aluminum oxide ceramic sensor
• Measurement is independent of gas type
• Resistant to dirt
• Robust metal housing with protection class IP54
• Vacuum connection over a stainless steel small flange DN 16 ISO-KF with G1/4 female thread

Typical Applications

• Chemical process engineering
• Vacuum insulations
• Evacuation and filling
• Packing machines
• Appliance engineering
• Vacuum furnaces

Absolute Pressure 1000...100 mbar to 1 x 10^-3 mbar, 750...75 Torr to 1 x 10^-3 Torr

The VSP841 and VSP842 Pirani half bridges measure absolute pressure in the fine vacuum range. The robust heat conduction sensor is compact, pre-adjusted and temperature compensated.
It is suitable for controlled and passive bridge circuits and as sensor for monitoring of vacuum isolations, readout of measurements with VD84.

Benefits

• Economical Pirani sensor
• Good long time stability
• Durable sensor, elastic helix filament
• Filament protected from condensing solvents by a metal screen
• Sensor pre-adjusted
• Extremely small sensor volume
• Screwable, electric connector
• Proposal for evaluation circuit available on request

Typical Applications

• Monitoring of vacuum insulations
• Appliances with integrated electronics for regulation and evaluation
• Apparatus engineering
• Chemical process engineering
• Analysis instruments
• Freeze drying
• Concentrators

Absolute Pressure 1000 mbar to 5 x 10^-9 mbar (=hPa), 750 Torr to 5 x 10^-9 Torr

The compact VSM72 Pirani/cold cathode combination transducer measures absolute pressure from atmosphere to ultrahigh vacuum.
The intelligent, micro processor driven Smartline transducers automatically control the appropriate interaction of both vacuum sensors regarding measurement ranges and switching points to achieve high accuracy.

Benefits

• Combination sensor with wide measuring range
• Patented pulsed Pirani sensor with extended range allows operation of the cold cathode at lower pressure and increase of lifetime
• Robust cold cathode sensor, insensitive against inrush of air
• Logarithmic signal output 0 - 10 V and RS485 interface
• Replaceable sensor head
• Excellent ignition behavior
• Correct pressure readings by means of separate gas type correction factors for Pirani and cold cathode sensors
• Two independent, dry relay switch points

Typical Applications

• Analysis instruments
• Coating plants and vapor deposition
• Mass spectrometry
• Process engineering
• Sputtering plants
• Vacuum furnaces

Absolute Pressure 1400 mbar to 1 mbar (=hPa), 1050 Torr to 1 Torr

The compact VSC43 piezo transducer is used for measuring absolute pressure in the rough vacuum range. Due to its durable ceramic sensor it is nearly insensitive to dirt and contamination.

Benefits

• Chemically resistant ceramic sensor with Viton® sealing
• High reliability, long term stability and accuracy
• Short response time
• Insensitive against contamination
• Temperature compensated
• Standardized, linear output signal current or voltage
• Easy connection to PLCs and other system controllers
• Vacuum connection over a stainless steel small flange DN 16 ISO-KF with G1/4 female thread

Typical Applications

• Appliance engineering
• Medical technology
• Packing machines
• Plant engineering
• Chemical process engineering
• Vacuum furnaces
• Operation control and documentation of vacuum plants and pumps
• Vacuum drying