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.

129 Products found
  • 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 549 i - Refrigeration Pressure Smart and Wireless Probe

    Order-Nr. 0560 1549

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

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

    • No hoses required - clean, simple, accurate

    • Low-loss refrigerant pressure testing!

    • Use with 115i pipe-clamp temperature probes for automatic superheat / sub-cooling calculations

  • testo Smart Probes Refrigeration set - Smart and Wireless 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 commissioning, servicing, PM and troubleshooting A/C and refrigeration systems. This kit can be operated with no tools other than your smart phone to communicate with the instruments.

    • Measures high-side & low-side refrigerant pressure & temperatures (simultaneously) of AC and refrigeration systems

    • Low-loss AC/R system checks. No hoses required!

    • Compact wireless AC/R test kit

    • Calculates superheat and subcooling in the Smart Probe App

  • 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 smart phone 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

    Order-Nr. 0563 1550

    The testo 550 instantly displays superheat and sub-cooling 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, report generation, and sending reports and invoices via email

    • Large 2-line backlit display

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

  • testo 557 - 4 Valve Digital manifold kit with Bluetooth and Ext. Vacuum Gauge

    Order-Nr. 0563 1557

    The testo 557 4-valve with 3/8 vacuum port digital manifold comes with a remote vacuum probe for faster and more reliable evacuations, Bluetooth App, two clamp temperature probes for instantaneous superheat / sub-cooling readings, and 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 / sub-cooling measurements

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

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

    Order-Nr. 0563 5703

    The testo 570-2 4-valve with 3/8 vacuum port 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

    • 2-clamp temperature sensor, USB cable and carry case

  • testo 417 Kit - Rotating Vane Anemometer

    Order-Nr. 400563 4170

    With readings of up to 4,000 fpm and the attached large vane, the testo 417 rotating vane anemometer kit is ideal for collecting reliable measurements for air velocity, CFM, and temperature at both supply and return grills. The included soft carrying case ensures the air flow meter is protected against light drops and the elements.

    • Soft carrying case for worry-free transportation

    • Air velocity, CFM, and temperature measurements

    • Multi-point and timed average calculations for in-duct readings

    • Bright backlit display provides easy viewing in any environment

  • testo 420 - Flow Hood

    Order-Nr. 0563 4200 / 400563 4200

    The testo 420 accurate, lightweight flow hood with Bluetooth is the precise and convenient solution for measuring volume flows at supplies and returns. Handling this capture hood with flow straightener and tiltable display is especially easy with the low weight of less than 6.2 lbs. and ergonomic handles.

    • Rugged and tough flow hood that weighs less than 6.2 lbs. (2.9 kg.)

    • Large, easy to read, tiltable, backlit display (removable) makes it easy to see the readings

    • Flow straightener for more precise measurement at turbulent outlets

    • App integration via Bluetooth for fast and easy monitoring and reporting on site

  • testo 435-2 - Multifunction meter w/ memory and software

    Order-Nr. 0563 4352

    The testo 435-2 multifunction meter is perfect for monitoring, analyzing, and diagnosing indoor air quality, wherever you need to take important IAQ measurements. In addition, you can easily pinpoint and troubleshoot problems with HVAC systems, and immediately see the results of corrections. Commissioning, validating, benchmarking, or simpy adjusting HVAC systems are all easy with the testo 435-2.

    • Built-in memory stores up to 10,000 measurements

    • Optional wireless (RF) temperature and humidity probes for remote measurement

    • Backlit LCD for easy viewing

    • Optional printer allows for easy documenting of measured data

  • 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 435-4 - Multifunction meter w/ memory, software, and differential pressure

    Order-Nr. 0563 4354

    The testo 435-4 multifunction meter is perfect for monitoring, analyzing, and diagnosing indoor air quality, wherever you need to take important IAQ measurements. In addition, you can easily pinpoint and troubleshoot problems with HVAC systems, and immediately see the results of corrections. Commissioning, validating, benchmarking, or simpy adjusting HVAC systems are all easy with the testo 435-4.

    • Integrated differential pressure measurements for flow velocity

    • Optional wireless (RF) temperature and humidity probes for remote measurement

    • Backlit LCD for easy viewing

    • Built-in memory stores up to 10,000 measurements

  • testo 635-2 - Temperature and moisture meter

    Order-Nr. 0563 6352

    The testo 635-2 temperature and moisture meter measures the temperature and moisture of different types of materials, surfaces, and environments, with a wide range of optional sensors.

    • Optional sensors for moisture / temperature / pressure dew point / absolute pressure measurements

    • 2 plug-in and 3 wireless sensors

    • Super-size memory for up to 10,000 readings

    • USB cable, PC software for logging and archiving measuring data

  • testo 511 - Pocket-sized abolute pressure measuring instrument

    Order-Nr. 0560 0511

    Small, handy, and practical, the testo 511 absolute pressure meter is also suitable for measuring the barometric altitude between two points.

    • Calculation of barometric air pressure

    • Barometric altitude measurement

    • Accuracy of +/- 3 hPa

    • 8 switchable pressure units: hPa, mbar, Pa, mmH2O, mmHg, inH2O, inHg, psi

  • testo 6383 - Differential Pressure Transmitter

    Order-Nr. 0555 6383

    testo 6383 differential pressure transmitter in cleanroom-conform panel design, optionally with humidity/temperature, accuracy ±0.3% of measuring range final value, automatic zero-point adjustment, selectable measuring range between 10 to 10hPa, selectable signal outputs, optional display, output of all relevant pressure and humidity parameters

    • Flat housing enables flush surface integration in the cleanroom wall

    • Low measuring range from 10 Pa ensures very high precision at the lowest pressures

    • Pressure transmitter for measuring differential pressure, as an option: humidity and temperature

    • Automatic zero-point adjustment guarantees high temperature-independent accuracy and long-term stability

  • 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 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 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 417 - Rotating vane anemometer

    Order-Nr. 0560 4170

    With readings of up to 4,000 fpm, the testo 417 rotating vane anemometer is ideal for collecting air velocity, CFM, and temperature measurements at supply and return grills. Having a larger vane, this air flow meter can cover a larger surface area, ensuring accurate measurements with each use.

    • Air velocity, CFM, and temperature measurements

    • Multi-point and timed average calculations for in-duct readings

    • Bright backlit display provides easy viewing in any environment

    • “Hold” button freezes readings for easy recording

  • 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

129 Products found
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