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Vacuum gauge DVR 3pro

The DVR 3pro is a fully electronic, versatile vacuum gauge with ATEX approval for use in areas with potentially explosive atmospheres (ATEX category 2).

Thanks to the easy operation and the combined digital/analog pressure display, measured values can be viewed fast and precisely. The DVR 3pro has an integrated pressure sensor made of aluminum oxide ceramic with excellent corrosion resistance and high long-term stability. A particular advantage is the flexible use with 9V battery power supply (mains-independent operation). Approved batteries are available from retail outlets. The removable cover at the back of the gauge allows for easy battery replacement. (Note: battery replacement must be done outside the hazardous ATEX area.)

Performance features

  • Flexible application range due to mains-independent operation of the fully electronic vacuum gauge with ATEX approval
  • Large, graphical analog display combined with precise digital readout allows users to detect and view tendencies easily
  • Improved functionality within the navigation menu helps to save energy and to increase the life cycle of the battery; battery easily replaceable; no lithium battery
  • High reliability, low EMI emission level near detection limit, high degree of immunity to electromagnetic interference, suitable for use in industrial environments
  • Capacitive ceramic diaphragm vacuum sensor made of aluminum oxide with excellent chemical resistance, accuracy and long-term stability
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Technical Data

Technical data Unit DVR 3pro
Vacuum sensor   Integr.
Upper measuring limit mbar/torr 1060 / 795
Lower measuring limit mbar/torr 1 / 1
Measurement principle   Ceramic diaphragm (alumina), capacitive, gas indep., absolute pressure
Accuracy of measurement   < +- 1 mbar/hPa/torr / +- 1 digit (after adjustment, constant temp.)
Temperature coefficient   < 0.15 mbar/hPa/0.11 torr /K
Ambient temperature range (operation) °C 10 - 40
Ambient temperature range (storage) °C -10 - 60
Max. media temp. for continuous operation / short times °C 40 / 80
Automatic switch-off   User-selectable: 1-600 min (default 5 min) or continuous operation
Measurement cycle   User-selectable: Automatic or 1 x per 3s, 1 x per 1s, 3 x per 1s
Material of outer housing   Robust plastic housing with good chemical resistance
Degree of protection   IP 40
Power supply   9 V battery
Typical battery lifetime   4.000 h, stand-by: 30.000 h
Dimensions (L x W x H) mm 117 x 117 x 91
Weight kg 0.4
ATEX-approval   II 2G EX ib IIC T4 Gb
Items supplied   Vacuum gauge complete with integrated vacuum sensor, including battery, hex key, connecting parts and manual.
Accessories   PTFE tubing KF DN 16 (1000 mm: 20686031)
DAkkS calibration with first delivery (20900214)
DAkkS recalibration (20900215)
Rubber vacuum tubing DN 6 mm (20686000)
9 V battery (20612891)

-Technical data are subject to change without notice-


Ordering Information
Product name Mains voltage and frequency Plug * Order no.
DVR 3pro 9 V= - 20682907

* As part of the implementation process of our new ERP system in 2018 our catalog numbers were extended to 8 digits in length by adding the digits “2” or “20” to the beginning of the old catalog numbers.

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