The PRO 211 and PRO 215 are top-class professional differential pressure handheld measuring devices equipped with a variety of functions, high robustness, and user-friendly operation for safe and reliable use. The PRO 215 also offers data logging capabilities.

The measuring devices feature an internal digital differential pressure sensor. Depending on the model, different 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 is equipped with 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 of G 1/8, allowing the user to replace them with another connection type if needed to suit specific requirements.

The multilingual large dot matrix/clear text LCD display offers ergonomic wide-angle visibility from daylight to darkness thanks to the backlighting and can show either large scale values or the graph of a variable measurement trend. The HOLD function allows freezing of measurements 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.

The data logging feature (available only on the PRO 215) has a large storage capacity of up to 1 million data points, based on a file system.