INTRODUCTION
PRO 915-2 is a differential pressure and temperature high class professional handheld data logger with a rich set of features, high grade robustness and operating comfort for safe and reliable use.

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 for each measured parameter: pressure, air speed, air flow rate and temperature.

Data Logging
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
Pressure measurement
The meter has an internal ±20 hPa digital differential pressure sensor.
Zero and slope user corrections allows compensating any possible sensor drift with time, for the best measuring accuracy.

Air speed and flow measurement
In combination with a Pitot tube, it can calculate the air speed.
The tube constant is configurable. If air speed measurement in a duct is performed, setting the duct section in the data logger, the air flow rate is also available.

Temperature measurement
The miniature flat-pin input for connecting K-type thermocouple probes allows the instrument to detect the temperature as well.
This feature also allows taking advantage of Pitot tubes with integrated K thermocouple sensor.

Connection to PC
Via the USB C port, for viewing or downloading the files stored in the instrument internal memory 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:

Up to 1 million data sets, file system based
Each data set includes date/timestamp and measurement.
Data are stored in CSV files.

Logging type:

Automatic with manual start/stop

Accuracy:

Pressure:
±0.1% FSS (*) ± 1 digit typ. @ 25 °C
±1% FSS ± 1 digit max.

Temperature:
±(0.2 °C +0.2% of measured value) ± 1 digit

Cold junction accuracy (TC input):

±0.3 °C

Measurement rate:

4 meas/s

Overpressure limit:

±100 hPa

Temperature drift (ref. 25 °C):

±1 %FSS/year max. (FSS = 2 x full scale pressure)

Long-term drift:

Pressure: ±1 %FSS/year max.
Temperature: ±0.1 °C/year

Compatible media:

Air and non-aggressive dry gases

Logging interval:

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 (cable included), Mass Storage Device

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:

350 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:

Pressure:
±20 hPa

Temperature:
K:-200…+1370 °C
J:-100…+750 °C
T:-200…+400 °C
N:-200…+1300 °C
R:+200…+1480 °C
S:+200…+1480 °C
B:+200…+1800 °C
E:-200…+750 °C

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:

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

Resolution:

Pressure: 0.1 hPa
Temperature: 0.1 °C

Channels:

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

Temperature:1
Miniature female flat-pin TC connector