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.

132 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 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 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 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

  • High-pressure set testo 312-4

    Order-Nr. 0563 1328

    Differential pressure gauge testo 312-4

    Hose set for testo 312-4

    Balloon pump with release screw

    Conical test plug 1/2"

    Conical test plug 3/4"

    IR report printer

    Pressure set for gas pressure measurements on heating systems

    High-pressure plug 3/8" and 3/4"

    High-pressure plug 1/2" and 1"

    High-pressure probe 1up to 5 bar

    System case

  • Basic set testo 312-4

    Order-Nr. 0563 1327

    Differential pressure gauge testo 312-4

    Hose set for testo 312-4

    Balloon pump with release screw

    Conical test plug 1/2"

    Conical test plug 3/4"

    IR report printer

    Pressure set for gas pressure measurements on heating systems

    System case

  • testo 635-1 - Humidity measuring instrument

    Order-Nr. 0560 6351

    The testo 635-1 temperature and humidity measuring instrument enables you to measure the temperature, air humidity, and dew point – in compressed air as well. State of the art technology and a large selection of probes, which are available optionally, allow for a wide variety of measuring possibilities.

    • Probes available as an option mean you can measure air humidity, temperature, absolute pressure, and dew point in compressed air

    • Measures air moisture, material equilibrium moisture, pressure dew point

    • Calculates dew point and dew point distance

    • Cyclical printing of readings once a minute, for example

  • 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 6321 - Differential Pressure Transmitter

    Order-Nr. 0555 6321

    The perfect solution for automated air conditioning and ventilation applications at an affordable price. Measure differential pressure in industrial and commercial buildings, offices, schools, hotels, museums, restaurants, libraries and more!

    • Pressure transmitter for measuring differential pressure in the 100 Pa to 2 bar measuring range

    • Magnetic valve for automatic zero-point adjustment guarantees high temperature independent accuracy and long-term stability

    • Alignment and analysis save time and costs for commissioning and maintenance

    • Available with and without display

  • testo 6351 - High Accuracy Differential Pressure Transmitter

    Order-Nr. 0555 6351

    testo 6351 Differential Pressure Transmitter

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

    • Low measuring range down to 50 Pa ensures very high precision at the lowest pressures

    • Measurement of differential pressure, flow velocity and volume flow

    • Configurable alarm management with adjustable response delay and alarm acknowledgement
       

  • testo 511 - Pocket-sized absolute 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.

    • High-precision absolute pressure measurement, with an accuracy of ±3 hPa

    • Suitable for barometric altitude measurements

    • Calculates barometric air pressure

    • 8 pressure units available, including Pa, hPa, mbar, mmHg, mmH2O, inHg, inH2O, and 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

132 Products found
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