The PRO 211 and PRO 215 are top-class professional differential pressure handheld measuring devices featuring a wide range of functions, high robustness, and user comfort for safe and reliable use. The PRO 215 also offers data recording capabilities.

The measuring devices are equipped with an internal digital differential pressure sensor. Depending on the model, various measuring ranges are available:

• PRO 21x-2: ±20 hPa
• PRO 21x-3: ±200 hPa
• PRO 21x-4: ±500 hPa
• PRO 21x-5: ±2000 hPa

The device features a peak functionality to detect sudden fluctuations in pressure measurement. User-adjustable zero point and slope corrections allow for compensation of any potential sensor drift over time, ensuring optimal measurement accuracy. The data logger comes with universal pressure connections with hooks for connecting hoses with an inner diameter of 4 and 6 mm. The pressure connections are screwed onto the device with a standard thread G 1/8, allowing the user to replace them with another connection type if needed to suit their specific requirements.

The multilingual large dot matrix/clear text LCD display offers ergonomic wide-angle visibility from daylight to darkness, thanks to its backlighting, and can show either large scale values or the graph of a variable measurement trend. The HOLD function allows measurements to be frozen on the display, while the REL function enables the display of measurements against a user-defined value. Many units of measurement are available, depending on the measuring range.

In addition to CSV files, a free, user-friendly PC-based application software allows for the analysis of a large amount of recorded data, with the option to display any recorded variable in a user-selectable interval.