The Testo 816-1 is perfect for sound level measurements in various environments like workplaces, industrial halls, and public areas. It offers easy switching between Slow and Fast modes and between frequency weighting curves A and C, reflecting human ear sensitivity and low-frequency evaluation respectively. Its built-in data memory stores over 30,000 measurements, managed through convenient PC software. Additionally, the software supports online measurements over extended periods. With the optional sound calibrator and adjustment accessory, recalibration can be done on-site.

The Testo 635 allows testing and analyzing air humidity, material moisture, U-value, and dewpoint in compressed air systems. It supports both traditional and wireless measurements, with wireless probes available for temperature and humidity. Up to three wireless probes can be used simultaneously. The device features intuitive operation and a clear menu structure, with the Testo 635-2 version offering extended functions such as an instrument store, PC software, and direct display of material humidity. It also allows for allocation of measurement values to respective sites and switching between user profiles for long-term and material moisture measurements.

The sensor in the testo 540 is adapted to the spectral sensitivity of the eye. This makes the testo 540 ideally suited to the measurement of light intensity at workplaces. The hold-function allows the comfortable readout of the measurement values. Max. and min. values are displayed at the press of a button. The clip-on protective cap, wrist strap and belt holder ensure safekeeping of the instrument. Testo 540 is very handy, small and easy to operate.

Indoor air quality relies heavily on monitoring carbon dioxide levels. The compact Testo 535 CO₂ measuring instrument, with its convenient app connection, ensures easy and efficient measurements, promoting comfort and a healthy indoor environment. Utilizing long-term stable infrared sensor technology, it provides repeatable and comparable measurements, ideal for ongoing assessments. Additionally, the Testo Smart App displays data as tables or graphs, facilitating storage and documentation. This versatile app not only configures the instrument but also transforms your smartphone into a secondary display.

Air flow and IAQ measurement improved to the max. The new universal IAQ instrument testo 400. Smarter. Faster. Better: The new generation of air flow and IAQ measurement technology. Simply exchange probes during the measurement without a re-start. Smart support for errorfree measurement.

Over time, gas and water systems may develop leaks, necessitating regular checks for safety and tightness in compliance with DVGW, ÖVGW, and UNI regulations. The Testo 324 facilitates precise load, tightness, and serviceability tests, ensuring proper functionality of pipes and valves, especially during adjustments or significant changes. This digital measuring instrument features advanced sensors for accuracy and combines all necessary elements in one convenient case. By introducing gas into the system, the risk of dangerous gas-air mixtures is minimized. DVGW-G-5952 tested for reliability.

Gas leak testing is crucial to prevent explosions and fires caused by leaky gas pipelines. Even small leaks, undetectable by odor, lead to higher consumption and increased accident risks over time. Leaks can result from hairline cracks or deteriorating hemp sealants in pipelines. With advancements in technology, gas pipeline tests can now be conducted quickly using test instruments. If a leak is detected, gas leak detectors swiftly and reliably identify the leak site, aiding in prompt repair and maintenance.