Pressure and air flow

Pressure plays an important role as a measurement parameter in air conditioning, ventilation, and refrigeration technology. Our range of measuring instruments goes from absolute and differential pressure measuring instruments, through digital manifolds, to vacuum gauges and leak detectors. You can even use our anemometers or multifunction measuring instruments to measure air flow velocity. Our multifunction measuring instruments are suitable for analyzing indoor air quality, as well.

161 products or recommendations for Pressure and air flow
  • testo 549 - Digital manifold

    Order-Nr. 0560 0550

    The testo 549 digital manifold is a breakthrough value, making analog gauges obsolete. It precisely measures high side / low side pressure and instantly displays the corresponding saturation / evaporation temperatures for 60 refrigerants. With optional temperature probes, automatic superheat and sub-cooling calculations can also be displayed.

    • 60 refrigerant profiles stored in the instrument

    • Rugged design and housing with 5 year warranty with registration

    • Large 2-line backlit display

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

  • testo 549i - Refrigeration pressure wireless Smart Probe

    Order-Nr. 0560 1549

    The testo 549i Smart Probe is a hoseless, wireless pressure probe for measuring refrigerant charge in AC and refrigeration systems.  It is used for servicing, troubleshooting, and documenting the operation of residential or commercial AC and refrigeration systems.  When two testo 549i probes are used in conjunction with two testo 115i pipe-clamp temperature probes, it is easy to monitor superheat and subcooling in AC and refrigeration systems.

    • Measures high-side or low-side refrigerant pressure (or both simultaneously, with 2 probes) in AC and refrigeration systems

    • No hoses required; clean, simple, and accurate

    • Low-loss refrigerant pressure testing!

    • Use with the testo 115i pipe-clamp temperature probes for automatic superheat and subcooling calculations

  • testo 557 - 4-Valve digital manifold kit with Bluetooth and external vacuum gauge

    Order-Nr. 0563 1557

    The testo 557 4-valve digital manifold with 3/8 in. and 1/4 in. vacuum ports comes with a remote vacuum probe for faster and more reliable evacuations, Bluetooth, app connectivity, two clamp temperature probes for instantaneous superheat / subcooling readings, and a convenient service case.

    • External vacuum probe for faster and more reliable system evacuation

    • Bluetooth / app integration for monitoring, report generation, and sending reports and invoices via email

    • Accurate, simultaneous superheat / subcooling measurements

    • Rugged housing with 5 year warranty (upon registration) for reliable testing

  • testo 550 - Digital manifold kit with Bluetooth

    Order-Nr. 0563 1550

    The testo 550 instantly displays superheat and subcooling for up to 60 refrigerants. It also measures high / low side pressures and temperatures. With its free Bluetooth linked app, the testo 550 opens up new possibilities for efficient analysis and documentation.

    • Includes two temperature clamp probes (two channel NTC temperature inputs) and service case

    • Bluetooth / app integration for monitoring, generating reports, and sending reports and invoices via email

    • Large 2-line backlit display

    • Rugged housing with 5 year warranty with registration for reliable service

  • testo Smart Probes Refrigeration Set - Wireless Smart Probe Kit

    Order-Nr. 0563 0002

    The testo AC/R Smart Probe Set is a combination of four instruments that measure high-side and low-side pressures and temperatures of A/C and refrigeration systems.  Configured to be used during the commissioning, servicing, PM, and troubleshooting of A/C and refrigeration systems.  This kit can be operated without the need for any other tools, besides your smartphone to communicate with the instruments.

    • Simultaneously measures high-side and low-side refrigerant pressure and temperatures of AC and refrigeration systems

    • Low-loss AC/R system checks, with no hoses required!

    • Compact wireless AC/R test kit

    • Calculates superheat and subcooling in the Smart Probes app

  • testo 570 - 4-Valve digital manifold kit with data logging

    Order-Nr. 0563 5703

    The testo 570 4-valve digital manifold has an internal vacuum sensor, data logging and printing capabilities, and an additional third probe port for either ambient temperature, current, or oil pressure probes.

    • Internal vacuum sensor

    • Data logging and printing capabilities

    • 999 hours of data for further evaluation on your PC

    • Includes 2 temperature clamp probes, USB cable, and carry case

  • testo 552 - Digital vacuum / micron gauge with Bluetooth

    Order-Nr. 0560 5522

    The testo 552 digital micron gauge is ideal for monitoring the evacuation of air conditioning, refrigeration, and heat pump systems. It is rich in features that make your work faster, easier, and more accurate.

    • Precise and reliable vacuum measurements, 1 micron resolution

    • Displays the saturation temperature of H2O to ensure full and proper evacuation

    • Illuminated, backlit display with visual alarm for evacuation pressure

    • Wireless Bluetooth communication to smartphone or tablet provides powerful analysis and reporting to display data, create reports, and send via email or SMS

  • testo 550 digital manifold kit - with Bluetooth® and set of 3 hoses

    Order-Nr. 0563 2550

    The complete kit for work on air conditioning and refrigeration systems, as well as on heat pumps: the testo 550 digital manifold, including a set of 3 hoses. This kit enables you to get down to work right away! The instrument can be used for 60 refrigerants, automatically calculating superheating/subcooling and can be connected to your smartphone/tablet via the testo refrigeration App. You can also use the powerful testo Refrigeration App to monitor the manifold via your smartphone/tablet and to store the measurement results or send them by e-mail as a complete report.

    • Complete Kit: set of 3 hoses, 2 x pipe clamp temperature probes and transport case

    • Automatic calculation of superheating/subcooling for 60 refrigerants: no hassle of manual calculations

    • Connection to smartphone/tablet Refrigeration App: remote monitoring, measurement documentation and refrigerant updates

    • Temperature-compensated leakage test

  • testo 557 digital manifold kit - with Bluetooth® and set of 4 hoses

    Order-Nr. 0563 2557

    The complete kit for work on air conditioning and refrigeration systems, as well as on heat pumps: the testo 557 digital manifold, including a set of 4 hoses! This kit enables you to get down to work straight away! The testo 557 digital manifold fulfils numerous functions in just one instrument: including superheating/subcooling calculation, vacuum measurement and temperature-compensated leakage test. You can also use the powerful testo Refrigeration App to monitor the manifold via your smartphone/tablet and to store the measurement results or send them by e-mail as a complete report.

    • Complete kit: set of 4 hoses, 2 x pipe clamp temperature probes, precise external Pirani gauge for vacuum measurement and transport case

    • Automatic calculation of superheating and subcooling in real time for 60+ refrigerants: no hassle of manual calculations

    • Connection to smartphone/tablet App: remote monitoring, measurement documentation and refrigerant updates

    • Temperature-compensated leakage test and automatic ambient pressure measurement

  • testo 510 - Digital manometer

    Order-Nr. 0563 0510

    With the testo 510, performing system tests has never been easier using our single, easy to use, rugged, compact digital manometer. Its small form factor, bright backlit display, and magnetic backing will enable the 510 to be used in a wide variety of applications.

    • Temperature and air density compensation for accurate airflow measurements

    • Measures differential pressure to 40 in. H2O

    • Backlit display ensures easy readability in low light situations

    • Temperature compensated pressure sensor

  • testo 425 - Hot wire anemometer

    Order-Nr. 0560 4251

    The testo 425 hot wire anemometer can measure cubic feet per minute (CFM) when conducting duct testing, as well as easily switch between flow and temperature readings. The telescoping handle of the thermal probe on this CFM meter makes it easy to reach ductwork above your head.

    • Telescoping hot wire probe

    • Measures velocity, volume flow (CFM), and temperature

    • Timed and multi-point average flow calculations

    • Auto-off function saves battery life

  • testo 405i - Hot-wire anemometer wireless Smart Probe

    Order-Nr. 0560 1405

    The testo 405i Smart Probe is a wireless instrument for measuring air flow velocity, temperature, and volume flow.  It is equipped with a telescopic shaft, which extends to 15” for easy in-duct testing.  You can reliably determine timed and multipoint flow traverses.

    • Measures air velocity, volume flow, and temperature

    • Measures in-duct air flow, and automatically calculates volume flow (simply enter the duct dimensions)

    • Small diameter (<0.5”) and 15” telescopic shaft length is ideal for in-duct flow averaging and timed traverse

    • Perform air duct leakage tests

  • testo Smart Probes VAC Set - Wireless Smart Probe Kit

    Order-Nr. 0563 0003

    The testo VAC Smart Probe Set provides a combination of four Smart Probe instruments, used with your smartphone or tablet to test and balance multi-outlet ventilation systems.  Two types of anemometers give you the capacity to measure in-duct air flow, and the flow from each vent.  Using the IR temperature probe for surface temperatures will show you motor and electrical equipment conditions, also allowing for easy checking of each outlet.  Lastly, the thermohygrometer provides an assessment of the humidity and dewpoint levels throughout the system.

    • Measures air velocity, temperature, relative humidity, wet bulb / dew point, and calculates volume flow

    • Kit includes instruments to measure, balance, troubleshoot, and optimize ventilation systems performance

    • RH & air flow measurements in-duct and at registers, viewed simultaneously in the testo Smart Probes app (405i, 410i, 605i)

    • App calculates system enthalpy with air flow & RH probes; app allows you to photograph objects with a smart device, capturing measurement marker and temperature values for reference and reporting (805i)

  • testo 510i - Differential pressure manometer wireless Smart Probe

    Order-Nr. 0560 1510

    The testo 510i Smart Probe is a wireless differential pressure probe used for accurate low-pressure measurements.  The testo 510i is great for measuring pressure in manifolds, static pressure, and pressure drops in buildings or ventilation systems.  Use it to measure the pressure drop across coils and filters, or in ducts and systems.

    • Measures static pressure, air flow, and volume flow (pitot tube not included)

    • Measures manifold pressure and pressure drop across filters and coils, and has a measurement menu in the Smart Probes app that includes pressure drop alarms

    • Easy configuration and calculations for volume flow (enter pitot tube factor and dimensions easily)

    • Magnetic back holds instrument for hands-free operation

  • testo 405 - Pocket-sized thermal anemometer

    Order-Nr. 0560 4053

    Use the testo 405 thermal anemometer to measure air velocity, volumetric flow, and air temperature. It is suitable for carrying out quick check measurements in ventilation ducts, and for measuring the air velocity in rooms, such as at drafty windows.

    • Volume flow calculation of up to 99,990 m3/h

    • Easily read data at any angle with rotating display

    • Telescopic handle up to 300 mm

    • Ideal for measurements in ducts

  • testo 416 - Small vane anemometer

    Order-Nr. 0560 4160

    The testo 416 small vane anemometer (air flow meter) accurately and easily measures air velocity and volume flow (CFM) for in-duct and a variety of HVAC applications above 120 fpm. As vane technology is inherently air density independent, the testo 416 handheld digital vane anemometer provides repeatable and reliable readings test after test.

    • Small (0.63 inch) vane for in-duct measurement

    • Direct display of volume flow (CFM)

    • Multi-point and timed average calculations make fast and simple work of duct traverses

    • Bright backlit display provides easy viewing in any environment

  • testo 480 - Digital temperature and humidity meter

    Order-Nr. 0563 4800

    Air flow measurements in ventilation ducts, temperature measurements in laboratories, humidity measurements in production, pressure difference measurements in clean rooms – the testo 480 temperature and humidity meter comes with a wide range of optional sensors that allow you to measure, analyze, and log these and a variety of other parameters with only one device.

    • High quality optional sensors for measuring air flow / temperature / humidity / pressure / degree of turbulence / heat radiation / CO2 / illumination intensity / PMV / PPD / WBGT

    • High precision, integrated pressure difference sensor included

    • Pro-software for easy and efficient analysis and logging included

    • Intelligent calibration concept

  • testo 410-2 - Vane anemometer with humidity measurement

    Order-Nr. 0560 4102

    The testo 410-2 handheld anemometer with humidity measures air flow, air temperature, and humidity quickly, easily, and accurately. The compact testo 410-2 air and humidity meter is ideal for fast comfort spot checks and timed averaging calculation.

    • Integrated RH sensor provides %rH, wet bulb, and dew point readings

    • Small 1.5 inch vane meter

    • Hold, Min, Max, and Timed averaging

    • Lens cover and leather belt case keep it protected - even in your tool box

  • testo 410-1 - Vane anemometer

    Order-Nr. 0560 4101

    The testo 410-1 pocket anemometer measures air flow and air temperature quickly, easily, and accurately. The integrated 1.5 inch vane makes this economical air flow instrument ideal for fast air velocity measurement spot checks.

    • Integrated, small 1.5 inch vane

    • Hold, Min, Max, and Timed averaging

    • Bright backlit display for easy viewing, no matter the environment

    • Lens cover and leather belt case keep it protected

  • testo 622 - Thermohygrometer and barometer

    Order-Nr. 0560 6220

    The testo 622 thermohygrometer and barometer is designed to provide you with an at-a-glance look at the air temperature, pressure, and RH. Ideal for monitoring the ambient air, especially in laboratories during calibration and experimental setups.

    • Measures air temperature / pressure / RH

    • Ideal for monitoring the air, especially in laboratories

    • Alarm alerts when threshold is exceeded

    • Table or wall mount

161 Products found
Show More