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-friendly operation for safe and reliable use. The PRO 215 also includes data logging capabilities.

Pressure Measurement
The measuring devices are equipped with an internal digital differential pressure sensor. Depending on the model, various measurement 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 to achieve the best 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.

Display
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 a 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 the measurement against a user-defined value. Many units of measurement are available depending on the measurement range.

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