This 13.8&quot; stainless steel pitot tube can be used to measure flow velocity.

This 19.7&quot; stainless steel pitot tube can be used to measure flow velocity.

This 3.3&#39; stainless steel pitot tube can be used to measure flow velocity.

Pitot tube, stainless steel, 30 in. long, measures velocity with temperature, 3x hoses (15 ft. long) and heat protection plate

<div>The testo 340 standard kit includes the 340 portable 4-gas analyzer with O<sub>2</sub> and CO sensors, transport case, power supply/rechargers, pack of 10 particle filters, 12&quot; probe, 5/16&quot; diameter, 7&#39; Teflon hose assembly&nbsp;T<sub>MAX </sub>= 932 &deg;F.</div>

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<div><strong>Testo 340s are sold through our Authorized Emissions Distributors network.&nbsp; Please contact Testo to find your local distributor. </strong></div>


<div>The ultimate combustion analyzer for commercial and industrial boiler and burners.&nbsp; This kit is configured especially for commissioning, tuning, and testing boilers and burners.</div>

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<div><strong>Testo 340s are sold through our Authorized Emissions Distributors network.&nbsp; Please contact Testo to find your local distributor. </strong></div>


<div>This kit is configured specifically for tuning and pre-testing applications. Special components make it ideal for testing spark or compression ignited RICE in gas compression, oil or refining, power generation, water pumping, and more.</div>

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<div><strong>Testo 340s are sold through our Authorized Emissions Distributors network.&nbsp; Please contact Testo to find your local distributor. </strong></div>


The testo 350 is a rugged, easy to use exhaust gas analyzer for carrying out precise industrial emission measurements and providing proper data administration. &nbsp;The Analysis Box can be operated with up to 6 gas sensors (5 optional). &nbsp;Select from sensors for CO, NO, NO<sub>2</sub>, SO<sub>2</sub>, H<sub>2</sub>S, C<sub>x</sub>H<sub>y</sub> and CO<sub>2</sub>

The testo 350 Control Unit - for wired remote control (or wireless) operation of the testo 350 analyzer box.

The measurements of O2, CO, NO and NO2, combined with automatic calculations (CO2, efﬁciency, excess air), provide fast <strong>boiler and burner tuning solutions</strong>. The 350&#39;s&nbsp;compact design is perfect for working on a platform or small space.&nbsp;

<div>This kit is configured specifically for Compliance testing and ideal for tuning and pre-testing applications. Special components make it the perfect portable Emission analyzer for testing spark or compression ignited RICE in gas compression, oil or refining, power generation, water pumping, and more.</div><div>&nbsp;</div><div><strong>Testo 350s are sold through our Authorized Emissions Distributors network.&nbsp; Please contact Testo to find your local distributor.</strong></div><div>&nbsp;</div><div>&nbsp;</div>

<div>The testo 350 turbine kit is configured to measure the low concentrations of NOx and CO (with higher O2%) encountered in combustion turbines.&nbsp; Low range sensors (0.1 ppm) combined with Teflon sampling lines, special gas paths, Peltier chiller system, and flow-controlled sample gas pumps are just some of the reasons why it achieves high accuracy.&nbsp; The testo 350 is the perfect portable emissions analyzer for testing in power generation, gas compression, oil and gas refining, industrial pumping, and wherever high accuracy emissions readings are needed.</div><div>&nbsp;</div><div><strong>Testo 350s are sold through our Authorized Emissions Distributors network.&nbsp; Please contact Testo to find your local distributor.</strong></div>

<div style="background-color: #f4f3f1;border: 1px solid #e8e6e3;border-top-left-radius: 16px;border-top-right-radius: 16px;padding: 1rem;margin: 0 -1rem 1.5rem;"><b>When you register your product, we will extend the regular manufacturer's warranty by one year. <a href="https://www.testo.com/en-US/services/product-registration-climate">&gt;&gt; Register now and get a warranty extension.</a></b></div>Ideal for Testing, Adjusting and Balancing (TAB) / (Retro)-Commissioning &ndash; Professionals (BSC / RCx) or Cleanroom Performance Tester (CPT) the testo 400 Air Flow kit meets highest standards when it comes down to accuracy and durability for air velocity measurements on HVAC systems.
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<div style="background-color: #f4f3f1;border: 1px solid #e8e6e3;border-top-left-radius: 16px;border-top-right-radius: 16px;padding: 1rem;margin: 0 -1rem 1.5rem;"><b>When you register your product, we will extend the regular manufacturer's warranty by one year. <a href="https://www.testo.com/en-US/services/product-registration-climate">&gt;&gt; Register now and get a warranty extension.</a></b></div>Ideal for Commissioning and IAQ investigation professionals

<div style="background-color: #f4f3f1;border: 1px solid #e8e6e3;border-top-left-radius: 16px;border-top-right-radius: 16px;padding: 1rem;margin: 0 -1rem 1.5rem;"><b>When you register your product, we will extend the regular manufacturer's warranty by one year. <a href="https://www.testo.com/en-US/services/product-registration-climate">&gt;&gt; Register now and get a warranty extension.</a></b></div>The testo 400 IAQ Kit is ideal for Commissioning and IAQ investigation professionals verifying building HVAC system performance parameters.

The CEC compliant testo 420 air flow capture hood with Bluetooth is the accurate, lightweight, and convenient solution for measuring volume flows at supplies and returns. Handling this air flow capture hood with its flow straightener and tiltable display is especially easy, with its low weight of less than 6.4 lbs, 24&quot; x 24&quot; included hood dimensions, and ergonomic handles.<br />
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<strong>*First NIST Calibration FREE with purchase of testo 420 through the testo Web Shop!</strong>

Use the CEC compliant testo 420 differential pressure measuring instrument to carry out simple, efficient tests on filters. You can also use this instrument in conjunction with a pitot tube to easily measure flow velocity and volume flow in ventilation ducts

Precise, reliable measurement of all air velocity and IAQ parameters with just one measuring instrument &ndash; the testo 440 dP.&nbsp;This multifunction measuring instrument is intuitive and easy to use, thanks to its integrated differential pressure sensor and clearly structured measurement menus. Adjusting air conditioning and ventilation systems, monitoring air quality, and carrying out comfort level measurements are all possible without the hassle of juggling different devices and tools. Enjoy the versatility of using your choice of high quality digital probes with just one measuring instrument.

<div style="background-color: #f4f3f1;border: 1px solid #e8e6e3;border-top-left-radius: 16px;border-top-right-radius: 16px;padding: 1rem;margin: 0 -1rem 1.5rem;"><b>When you register your product, we will extend the regular manufacturer's warranty by one year. <a href="https://www.testo.com/en-US/services/product-registration-climate">&gt;&gt; Register now and get a warranty extension.</a></b></div>Carry out measurements without any annoying cables: use the kit to handle all relevant measurements in ventilation ducts and at air/ceiling outlets. You will receive the testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor and the 100 mm vane probe head and hot wire probe head (&Oslash; 9 mm) for attachment to the universal Bluetooth handle supplied.&nbsp; To make measurements more convenient, both probe heads can be combined with the telescope included in the kit. The equipment can be transported safely and conveniently in the robust case.

<div style="background-color: #f4f3f1;border: 1px solid #e8e6e3;border-top-left-radius: 16px;border-top-right-radius: 16px;padding: 1rem;margin: 0 -1rem 1.5rem;"><b>When you register your product, we will extend the regular manufacturer's warranty by one year. <a href="https://www.testo.com/en-US/services/product-registration-climate">&gt;&gt; Register now and get a warranty extension.</a></b></div>Carry out measurements without any annoying cables: use the kit to handle all relevant measurements in ventilation ducts and at air/ceiling outlets. You will receive the testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor, two vane probe heads (&Oslash; 100 mm and &Oslash; 16 mm) and a humidity/temperature probe head &ndash; all three can be attached to the universal Bluetooth&lt;sup&gt;&amp;reg;&lt;/sup&gt; handle supplied. To make measurements more convenient, both vane probe heads can be combined with the telescope included in the kit. The equipment can be transported safely and conveniently in the robust case.

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

<div style="background-color:#dae4ea; border: 1px solid #648798; padding: 10px;"><b>Product no longer available. Have you checked out its successor?<br/>Why not enjoy the benefits that it has to offer: <a href="…/p/0563-1512">>> To the product</a></b></div>

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The high precision testo 521-1 differential pressure measuring instrument is ideal for accurate differential pressure measurements in air conditioning and ventilation technology, for pressure drop on filters, for instance, for checking fans and extractors, or for pitot tube measurements.

The high precision testo 521-2 differential pressure measuring instrument is ideal for accurate differential pressure measurements in air conditioning and ventilation technology, for pressure drop on filters, for instance, checking fans and extractors, or for pitot tube measurements.

<div style="background-color:#dae4ea; border: 1px solid #648798; padding: 10px;"><b>Product no longer available. Are you familiar with the alternative?<br/>Why not enjoy the benefits that it has to offer: <a href="…/p/0563-1512">>> To the product</a></b></div>

Ideal for checking pressure in sensitive industrial processes, the testo 526-1 high precision differential pressure measuring instrument&nbsp;has a measuring accuracy of &plusmn;0.1% of the final value. It also has two probe inputs for additional pressure and temperature probes.

The testo 526-2 high precision differential pressure measuring instrument is ideally suited for checking pressure in sensitive industrial processes, thanks to a measuring accuracy of &plusmn; 0.05% of the final value. Two additional pressure and temperature probes can be attached.

The testo 400 is the universal measuring instrument for all TAB / Commissioning and IAQ professionals. Measure, analyze and document Air flow, air pressure,&nbsp; IAQ and comfort level parameters using just one instrument &ndash; simply, conveniently and in compliance with the standards. High-quality measuring technology, intuitive measurement assistants, versatile documentation options and a comprehensive selection of air flow, comfort and IAQ probes make the testo 400 the perfect partner for your day-to-day work.

<div style="background-color: #f4f3f1;border: 1px solid #e8e6e3;border-top-left-radius: 16px;border-top-right-radius: 16px;padding: 1rem;margin: 0 -1rem 1.5rem;"><b>When you register your product, we will extend the regular manufacturer's warranty by one year. <a href="https://www.testo.com/en-US/services/product-registration-climate">&gt;&gt; Register now and get a warranty extension.</a></b></div>Ideal kit for IAQ professionals, with a focus on indoor air quality and comfort level. You will receive the testo 400 universal IAQ measuring instrument with intuitive measurement menus, one CO₂ probe (with Bluetooth<sup>&reg;</sup> handle), one turbulence probe and one globe thermometer Ø 150 mm (both with fixed cable). Use the measuring tripod to ensure standard-compliant positioning of the probes. In combination with the IAQ data logger, which is available to order separately, long-term measurements up to 2 weeks can be recorded, even without the IAQ measuring instrument.

<div>Complete kit for all-round engineers in the field of heating, air conditioning, refrigeration and ventilation: The kit contains all the testo&nbsp;Smart Probes and is ideal for carrying out functional checks or for plant maintenance, in conjunction with your smartphone/tablet. The testo&nbsp;Smart&nbsp;App enables you to work more easily and efficiently: Automatically calculate numerous parameters such as superheating/subcooling, target superheat, cooling/heating load, differential temperature or mold indication. Measurement data reports can be emailed directly as a PDF or Excel file.<br />
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<strong>**NOTE** The testo 115i, 549i, and 605i Smart Probes now have an extended Bluetooth range of up to 350 Feet!*</strong></div>


For heating engineers: Compact kit containing three measuring instruments for carrying out your most important measuring tasks involving heating systems. The testo&nbsp;Smart App enables you to work more easily and efficiently: Use the measurement menus for pressure drop test with alarm function or for non-contact IR temperature measurement with image documentation including measuring value and measurement spot marking. Measurement data reports can be emailed directly as a PDF or Excel file.

This silicone hose connects a pitot tube to a pressure probe.

This connection hose is made of silicone, is 16.4 feet long, and has a maximum load of up to 281 inH<sub>2</sub>O (700 hPa).

Dimensions	length: 196.85 in., ø: 0.28 in. / length: 5000 mm, ø: 7 mm
Diameter probe shaft	0.276 in. / 7 mm
Housing	silicone
Length probe shaft	16.404 ft. / 5 m
Product colour	white
Weight	5.43 oz. / 154 g

Connection hose, 16.4 ft, load up to 281 inH₂O - silicone

Connection hose, 16.4 ft, load up to 281 inH₂O - silicone

General technical data