INTRODUCTION
PRO 211 and PRO 215 are differential pressure high class professional handheld meters with a rich set of features, high grade robustness and operating comfort for safe and reliable use.
PRO 215 also has data logging capability.

FEATURES
Display
The multilingual large dot matrix/clear text LCD has ergonomic wide-angle visibility from daylight to darkness, thanks to the backlight.
It displays either large scale values, statistical data or the chart of a variable measurement history.
The HOLD feature allows freezing the measurements on display, while the REL feature allows showing the measurement against the measured value.
Many units of measurement available, depending on measuring range: Pa _ hPa _ kPa _ MPa _ bar _ mbar _ psi _ kg/cm2 _ inHg _ mmHg _ mmH2O.

Data Logging (only PRO 215)
Large storage capacity: up to 1 million data, file system based.
The logged data are store in CVS files that can be easily viewed connecting the instrument to a PC via USB: the instrument is seen by the PC as a mass storage device, the data can be read oud and evaluated without software necessarily needed. Automatic log with configurable interval.
The instruments integrate a Real Time Clock: date and time of each logged sample are stored.

Alarm
Configurable alarm thresholds and optionally hysteresis can be set.
LCD indication and buzzer activation when thresholds are exceeded.

CONFIGURATION & MEASUREMENT
Sensors
The meters have an internal digital differential pressure sensor. Different ranges are available, depending on model.
Zero and slope user corrections allows compensating any possible sensor drift with time, for the best measuring accuracy.
The data logger is supplied with universal barbed pressure ports for connecting 4 and 6 mm inner diameter hose.
The pressure ports are screwed to the meter by a standard G 1/8 thread, allowing the user to change them with a different type of port, if necessary, to fit his specific needs.

Connection to PC
Via the USB C port, for viewing or downloading the files stored in the instrument internal memory (only PRO 215) or connecting to the application software ProXware.

Statistics
Detection of MIN, AVG (average) and MAX. The user can clear the statistical info to start a new statistical calculation.

Storage capacity:

only PRO 215-x: Up to 1 million data sets, file system based
Each data set includes date/timestamp and measurement.
Data are stored in CVS files.

Logging type:

only PRO 215-x: Automatic with manual start/stop

Accuracy:

±0.15 %FSS (*) ± 1 digit typ. @ 25 °C
±1.5 %FSS ± 1 digit max.

Measurement rate:

4 meas/s

Overpressure limit:

PRO 21x-2: ±100 hPa
PRO 21x-3: ±1000 hPa
PRO 21x-4: ±2000 hPa
PRO 21x-5: ±3500 hPa

Temperature drift (ref. 25 °C):

±0.002 %FSS/K typ.

Long-term drift:

±1 %FSS/year max.

Compatible media:

Air and non-aggressive dry gases

Logging interval:

only PRO 215-x: 1, 2, 5, 10, 15, 30 s / 1, 2, 5, 10, 15, 30 min / 1 hour

Clock:

User-adjustable date and RTC function (max. drift 1 min/month @ 25 °C)

User interface:

Multilingual (de, en, it, fr, es)

PC connection:

USB C

Power supply:

4 x AA battery (included in the scope of delivery)
External 5 V DC via USB C (power adapter or PC USB port)

Power consumption:

20 mA typ.

Weight:

340 g incl. battery

Battery autonomy:

> 150 h typ. continuous operation

Auto power off:

Yes, user configurable
Automatically disabled if external power is connected

Housing material:

Shock and impact proof, ABS, TPE (side protection), Polyster (front panel),

Measuring range:

PRO 21x-2: ±20.00 hPa
PRO 21x-3: ±200.0 hPa
PRO 21x-4: ±500.0 hPa
PRO 21x-5: ±2000 hPa

Operating conditions:

-5 ... +50 °C; 0 ... 85 % RH (non-condensing)

Storage temperature:

-25…65 °C (without batteries)

Display:

140 x 160 dot-matrix LCD with backlight / visible area 42 x 50 mm, display of large-digit single values, statistical info (min/avg/max), chart view

Dimensions:

170 x 78 x 38 mm

Standard functions:

Acoustic/optic alarm, automatic switch-off freely configurable by the user (automatically deactivated if external power supply is connected)

Display units:

Pa, hPa, kPa, MPa, bar, mbar, psi, kg/cm2, inHg, mmHg, mmH2O

Resolution:

PRO 21x-2: 0.01 hPa
PRO 21x-3: 0.1 hPa
PRO 21x-4: 0.1 hPa
PRO 21x-5: 1 hPa

Channels:

1 differential
2 x universal barbed pressure ports (+/-) for 4 and 6 mm inner diameter hose
Interchangeable G 1/8 thread connections