Testing The Battery Condition - Benning SUN 2 Bedienungsanleitung

8.1.1 Switching the BENNING SUN 2 ON/OFF
- Press the keys 3 and 4 at the same time for approx. 2 seconds to switch the BENNING
SUN 2 on. This will be confirmed by an acoustic signal. Press the keys again for > 2 seconds
to switch the device off.
- The BENNING SUN 2 is switched off automatically after approx. 2 minutes (APO, Auto-
Power-Off). It switches on again when the keys 3 and 4 are actuated.
8.1.2

Testing the battery condition

- During switch-on and operation, the BENNING SUN 2 carries out an automatic battery test.
- Discharged batteries are indicated by a battery symbol
battery symbol
section 9.2).
- For testing the battery condition, press the key 7 for > 5 seconds to call the data logger.
"LOG" appears on the digital display.
- Alternately, the display shows the occupied / free memory space as well as the battery volt-
age / the measuring interval in minutes.
- As soon as the battery voltage falls below 1.8 V, immediately replace the batteries by new
ones in order to prevent incorrect measurements (see section 9.2).
- Press the key 3 or 4 to exit the data logger.
8.1.3 Measuring the insolation (solar irradiance)
- After having switched the BENNING SUN 2 on, the insolation is displayed continuously on
the digital display 2 .
- Solar irradiance below 100 W/m² are not indicated. Display: "- - - ".
- Place the BENNING SUN 2 onto the surface of the photovoltaic module and press the
key 7 , if necessary, to store the measured value temporarily in the digital display.
- To store the insolation value for a longer period of time, please use the data logger as de-
scribed in section 8.2.
8.1.4 Measuring the module temperature and the ambient temperature
- Connect the module / ambient temperature sensor   to the BENNING SUN 2 by means
of the jack .
- Press the key 3 to display the module temperature (TPV) and the ambient temperature
(TA).
- Bring the module temperature sensor  into contact with the PV module and wait until the
temperature sensor has measured the temperature of the PV module.
- To store the module temperature and ambient temperature values for a longer period of time,
please use the data logger as described in section 8.2.
PV module temperature
8.1.5 Measuring the angle of inclination
- Press the key 4 to display the angle of inclination and the compass bearing.
- The angle of inclination with respect to the horizontal is indicated continuously on the digital
display 2 .
- Place the BENNING SUN 2 onto the surface of the photovoltaic module and press the HOLD
key 7 , if necessary, to store the measured value temporarily in the digital display.
03/ 2012
appears, the batteries have to be replaced by new ones immediately (see
insolation
ambient temperature
insolation
angle of inclination
compass bearing
BENNING SUN 2
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on the LC display. As soon as the
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