Absolute pressure

Also known as relative or static pressure, absolute pressure applies to the vacuum of free space. Calculating absolute pressure is relatively tricky, as it involves adding gauge pressure to atmospheric pressure. Absolute pressure serves as a point of reference for HVAC technicians.

For example, depending on system settings, building location and other factors, atmospheric pressure is not constant across different situations. Static pressure eliminates this variability by providing a constant point of citation. Testo’s absolute pressure meters is the preferred choice among HVAC technicians. 
 
Did you know: Absolute pressure relates to the vacuous space of the universe (zero pressure).

37 products or recommendations for Absolute pressure
  • testo 511 - Pressure Meter Absolute 

    Order-Nr. 0560 0511

    Small, handy and practical: the testo 511 absolute pressure meter measures absolute pressure and is also suitable for measuring the barometric altitude between two points. 
    • Calculation of barometric air pressure 

    • Barometric altitude measurement 

    • 8 switchable pressure units 

    • Easy to use; backlit display for use in all lighting conditions 

    $288.00
    incl. GST  $316.80
  • testo 635-1 - Thermohygrometer 

    Order-Nr. 0560 6351

     
    • Dual Probe Measurement 

    • Measurement of air moisture, material equilibrium moisture, pressure dew point 

    • U - Value probe connection 

    • Protection class IP54 

    $583.00
    incl. GST  $641.30
  • testo 622 - Indoor Climate Meter 

    Order-Nr. 0560 6220

    The Testo 622 indoor climate meter is designed to provide you with an at-a-glance look at the air temperature, relative humidity and air pressure. Ideal for monitoring the ambient air, especially in laboratories. 
    • Measures air temperature, relative humidity and pressure 

    • Alarm alerts when threshold is exceeded 

    • Real time measurement values with date and time 

    • Automatic calibration reminder 

    $406.00
    incl. GST  $446.60
  • testo 176 P1 - Pressure Data Logger 

    Order-Nr. 0572 1767

    The Testo 176P1 is a 5 channel data logger. It has an internal absolute pressure sensor and connection possibilities for two external temperature/humidity probes. 
    • 3 Parameters in 1 Temperature, Humidity & Pressure 

    • Large memory, 2 Million Readings 

    • Data transfer possible using the USB port
      or SD card (Optional) 

    • Simple and large easy to read display 

    $986.00
    incl. GST  $1 084.60
  • testo 550 - Refrigeration Gauge 

    Order-Nr. 0563 1550

    Are you familiar with the current version?
    Why not enjoy the benefits that it has to offer: >> To the new version
    • 60 Built in refrigerants 

    • Additional 12 month (3 year) product
      warranty with registration 

    • On-site Reporting/ Monitoring Via Testo Refrigeration App 

    • Simplified menu structure 

    Price on Request
  • testo 635-2 - Temperature and moisture meter

    Order-Nr. 0563 6352

    The Testo 635-2 is an instrument designed for measuring air moisture, material equilibrium moisture and pressure dewpoint in compressed air systems. Moisture characteristics can be recorded in the instrument memory and analysed and displayed in graphics or tables. Precision probes up to -60°C tpd are available to check pressure dewpoint in compressed air systems. 
    • Dual Probe Measurement 

    • Measurement of air moisture, material equilibrium moisture, pressure dew point 

    • U - Value probe connection 

    • Internal Memory 10,000 Readings 

    $865.00
    incl. GST  $951.50
  • testo 549 - Digital manifold for beginners

    Order-Nr. 0560 0550

    The testo 549 digital manifold offers many advantages in comparison with analog manifolds: the instrument will make it easier for you to work on refrigeration systems and heat pumps. With its integrated temperature measurement and automatic calculation of superheating/subcooling, you can now do away with additional measurements and manual comparisons (when using an optional clamp probe). You can also use the manifold for 60 current refrigerants.
    • 60 current refrigerants stored in the instrument

    • Additional 12 month (3 year) product warranty with registration 

    • Large 2-line backlit display 

    • Digital accuracy performs more reliably than analog manifold gauge sets for more precise readings 

    Price on Request
  • testo 552 - Digital vacuum gauge with Bluetooth®

    Order-Nr. 0560 5522

    Extremely precise, rugged and practical: the testo 552 digital vacuum gauge. Ideal for evacuating refrigerant systems or heat pumps.
    • Measurement data monitoring via testo Smart Probes App

    • Measurement data dispatch via testo Smart Probes App

    • Extremely precise, extremely rugged, extremely practical – with visual alarm and backlit display

    • Measures pressure and calculates the evaporation temperature of H2O automatically

    Price on Request
  • testo 550i - App-controlled digital manifold with Bluetooth and 2-way valve block

    Order-Nr. 0564 2550

    The testo 550i app-controlled digital manifold with Bluetooth ®, 2-way valve block and sturdy hook offers extensive measurement technology in an exceptionally compact format. Use this extremely robust manifold to carry out your everyday work on refrigeration and air conditioning systems and heat pumps wirelessly, with ease and reliability. All using the testo Smart App on your smartphone or tablet.
    • All activities, from measurement through to documentation, using the testo Smart App on your Smartphone

    • The smallest digital manifold on the market

    • Maximum reliability thanks to the extremely robust housing with IP54 protection class

    • Optionally expandable with testo Smart Probes for temperature, humidity and vacuum

  • testo Smart Probes AC & refrigeration test kit plus

    Order-Nr. 0563 0002 41

    For refrigeration engineers: The kit contains two testo 549i high-pressure gauges, two testo 605i thermohygrometers and two testo 115i clamp thermometers. Used in conjunction with your smartphone/tablet, the kit is ideal for servicing, troubleshooting and installing air conditioning and refrigeration systems. The testo Smart Probes App makes your work easier and more efficient: over 90 stored refrigerants, automatic calculation of superheating/subcooling, target superheat and cooling/heating power, emailing of measurement data reports as PDF or Excel files.
    • Application-specific measurement menus for superheating/subcooling, target superheat, heating/cooling power

    • More than 90 common refrigerants plus refrigerant updates in the testo Smart Probes App

    • 100 m Bluetooth® range for particularly flexible applications

    • Transmission and analysis of measurement data via testo Smart Probes App

  • testo Smart Probes AC & refrigeration test kit

    Order-Nr. 0563 0002 10

    For refrigeration engineers: Compact kit containing testo 549i high-pressure gauge and testo 115i clamp thermometer (two of each). Used in conjunction with your smartphone/tablet, the kit is ideal for servicing, troubleshooting and installing air conditioning and refrigeration systems. The testo Smart Probes App makes your work easier and more efficient: over 90 stored refrigerants, automatic calculation of superheating/subcooling, emailing of measurement data reports as PDF or Excel files.
    • Application-specific measurement menus for superheating/subcooling

    • More than 90 common refrigerants plus refrigerant updates in the testo Smart Probes App

    • 100 m Bluetooth® range for particularly flexible applications

    • Transmission and analysis of measurement data via testo Smart Probes App

  • testo 190-P1 - CFR Pressure data logger

    Order-Nr. 0572 1900

    Use the testo 190-P1 CFR pressure data logger for efficient monitoring of sterilization and freeze-drying processes. Designed for the pharmaceutical industry, the testo 190-P1 CFR data logger is ideally suited for tightness or overpressure testing in autoclaves and freeze-drying systems.
    • High-precision monitoring of absolute pressure in the 1 mbar to 4 barabs range

    • Durable, robust, reliably tight, even after changing the battery

    • Changing the battery takes just seconds, saving time and increasing efficiency

    • Simultaneous programming and readout of several CFR data loggers via the multifunction case

    Price on Request
  • testo 191-P1 - HACCP pressure data logger

    Order-Nr. 0572 1916

    Use the testo 191-P1 HACCP pressure data logger, which is certified by HACCP International, for efficient monitoring of pasteurization and sterilization processes. Designed for food production, the testo 191-P1 is ideally suited for efficient saturated steam pressure testing in pasteurization and sterilization processes.
    • High-precision monitoring of absolute pressure in the 1 mbar to 4 barabs range

    • Durable, robust, reliably tight, even after changing the battery

    • Changing the battery takes just seconds, saving time and increasing efficiency

    • Simultaneous programming and readout of several HACCP data loggers via the multifunction case

    Price on Request
  • testo 552i - App-controlled wireless vacuum probe

    Order-Nr. 0564 2552

    Use the testo 552i vacuum probe with Bluetooth to measure vacuum wirelessly with speed, ease and precision via just one service port – with no loss of refrigerant. The testo Smart App supports you with numerous intelligent features – for example, you can see the vacuum by simply glancing at the graphic illustration in the app or on the manifold’s display. Thanks to its robust, convenient housing and proven measuring technology, the vacuum probe is compact and reliable when carrying out your vacuum measurements on refrigeration and air conditioning systems and heat pumps.
    • Identify vacuum quickly and easily by means of the graphical display in the App or on the digital manifold screen

    • Connects automatically via Bluetooth® to the testo Smart App and digital manifolds

    • Exceptionally compact and reliable thanks to the robust, easy-to-handle housing with IP 54 protection class

    • Easy installation at any service port thanks to the integrated 45° angle

  • testo 549i - High-pressure gauge operated via smartphone

    Order-Nr. 0560 2549 02

    The professional and compact testo 549i high-pressure gauge can be controlled via the testo Smart Probes App using your smartphone or tablet, and is ideal for carrying out servicing and troubleshooting on air conditioning and refrigeration systems. The App also enables evaporation and condensation temperatures to be calculated automatically.
    • Measurement of high and low pressure

    • Low refrigerant loss – since no hoses are required for measurements

    • Measurement data displayed in the form of a graph or table, and sent via testo Smart Probes App

    • Problem-free application at measuring points that are a long distance apart thanks to Bluetooth® range up to 100 m

  • Comfort level probe - for degree of turbulence measurement according

    Order-Nr. 0628 0143

    The comfort probe (with the appropriate measuring instrument) is ideally suited for determining indoor air turbulence in accordance with EN 13779.
    • Turbulence measurement in accordance with EN 13779

    • Determination of air velocity and draught risk

    • Integrated temperature and ambient pressure measurement

    • Intelligent calibration concept

    $1 274.00
    incl. GST  $1 401.40
  • ComSoft Professional - software

    Order-Nr. 0554 1704

    The ComSoft Professional software means you get software for programming and readout of Testo data loggers and for archiving data. It offers analysis and display possibilities over and above the basic functions.
    • Professional software for programming and readout of Testo data loggers and for archiving data

    • Graphic and tabular display of all measurement parameters

    • Effortless creation and management of reports

    • Intuitive user interface for efficient work

    $512.00
    incl. GST  $563.20
  • testo ComSoft Basic v5 SP 6.3 - Logger software

    Order-Nr. 0572 0580

    Free download: testo ComSoft Basic for programming and reading Testo data loggers.
    • Programme and read out Testo data loggers using the basic software

    • Particularly clear: graphic and tabular display of readings

    • Convenient export functions, e.g. for further processing of data in Microsoft Excel or generation of a PDF

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