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VD84 - Digital Compact Vacuum Meter / Data Logger

Absolute Pressure 100 mbar to 1 x 10-3 mbar (=hPa), 75 Torr to 1 x 10-3 Torr

VD84 digital Pirani vacuum meter with external, exchangeable sensor head VSP841/2 reads absolute pressure in the fine vacuum range. It is equipped with USB interface and can be used as data logger (up to 2000 measurements).
VD84 can be operated with battery or external power supply making it ideal for either portable or stationary applications.


  • Temperature compensated Pirani sensor with durable helix filament
  • Min/Max memory: Storage and display of high and low values
  • Excellent reproducibility
  • Gas correction factors for correct pressure readings
  • Long battery life due to clocked measurement
  • The sensor is well protected against condensed solvents
  • Automatic switch off or continuous operation
  • Pressure units mbar, Torr, hPa

Typical Applications

  • Cyclic monitoring of vacuum insulations of liquid gas tanks or pipelines
  • Evacuation of brake and air-conditioning systems
  • Check and setup of vacuum appliances
  • Diagnosis and service of vacuum pumps
  • Coating plants
  • Speed vacs
  • Vacuum evaporators
Technical Data
Measuring Principle Pirani, depending on gas type
Materials In Contact With Vacuum Stainless steel 1.4305, tungsten, nickel, glass
Measurement Range 100 - 1 x 10-3 mbar (75 - 1 x 10-3 Torr),
max. overpressure 4 bar absolute
Resolution 2-digit plus exponent
Accuracy < 30% from reading: 100 - 20 mbar
< 10% from reading: 20 - 1 x 10-2 mbar 
< factor 2: < 1 x 10-2 mbar
Measuring Rate 1.0 s
Data Logging Rate 1...999 s
Operating Temperature +5...+50°C
Storage Temperature -20...+60°C
Power Supply 9 V block battery (alt. NiCd rechargeable battery) or 15 VDC external
Electrical Connection Jack for external power supply
Power Consumption Approx. 110 mW 
Operating Time Max. 100 h with 9 V lithium battery,
max. 40 h with 9 V Alkali-Mangan battery
Sensor Connection External Sensor connected with a spiral cable, length max. 1,20 m
Vacuum Connection Stainless steel small flange DN 16 ISO-KF or 1/8" NPT male thread
Protection Class IP40
Display LCD 12mm
Weight Approx. 200 g (battery included)

Additional Info

Additional Info

2.00 LBS
Calculated at Checkout