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3
FUNCTIONAL AND OPERATING ELEMENTS
3.1 Operating elements
The sensor has an on-button and two LEDs for indicating the
Bluetooth and battery charge status.
On-button
To switch the sensor on and off in Bluetooth mode, the power
button must be pressed for longer than 3s. If the sensor is to
be connected via USB, it is not necessary to press the power
button.
Bluetooth-LED
Flashing red every 2 seconds
Flashing green every 2 seconds
Flashing green every 4 seconds
Battery charge LED
Flashing red every 2 seconds
Illuminated red
Illuminated red
3.2 USB port
The battery, which is permanently installed in the sensor, is
charged via the type C USB port. Furthermore, communica-
tion with a computer takes place via this interface.
3.3 Measurement inputs
On the front of the sensor there is a four-pole connecting
socket to which the supplied electrode can be connected
4
NOTES ON OPERATION
This device fulfils all of the technical requirements that are
compiled in current EC guidelines. The characteristics of this
product qualify it for the CE mark.
The individual connecting leads are each not to be longer
than 2 m.
The instrument can be so influenced by electrostatic charges
and other electromagnetic phenomena (HF, bursts, indirect
lightning discharges) that it no longer works within the given
specifications. Carry out the following measures to reduce or
eliminate the effect of such disturbance: Ensure potential
equalization at the PC (especially with Laptops). Use screen-
ing. Do not operate high frequency emitters (e.g. radio
equipment or mobile radiotelephones) in the immediate vicini-
ty. When a total failure of the instrument occurs, unplug it and
plug it back in again for a reset.
5
HANDLING
This section describes the start-up of the sensor and the re-
cording of measurement data. Please read this section thor-
oughly in order to avoid failures or operating errors.
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Not connected
Connected to the ter-
minal device
Running measurement
Low battery
Active charging process
Charging process com-
pleted
5.1 Charging process
Use a USB-C cable to connect the sensor to a computer or
USB charger (not included).
During the charging process, the battery charge LED lights
up red. When the charging process is complete, the battery
charge LED lights up green. The charging time for a com-
pletely discharged battery is 3 hours maximum.
Disconnect the charger at the latest four hours af-
ter the completion of the charging process. Other-
wise, the service life of the battery may be nega-
tively affected.
5.2 Start-up
Switch on the sensor by pressing the power button for more
than 3s. Now the Bluetooth LED flashes red. Start the soft-
ware and select the sensor.
If the sensor is to be used via the USB interface, it does not
need to be switched on. The sensor is connected directly to
the end device using the supplied USB cable.
There is a 9-digit
code on the back of
the
sensor
(Fig.2).
The last 4 digits of
the code are dis-
played as the sensor
name in the software
(Fig.3). This enables
the precise assign-
ment of the sensors
within the software.
Selection of the sensor via the Bluetooth interface
Make sure that the Bluetooth interface is activated on the
terminal device (PC/Tablet/Smartphone) and that the soft-
ware is allowed to access the interface.
After the sensor has been selected in the software, the LED
flashes green to indicate that the connection has been estab-
lished correctly. After the sensor has been coupled with the
software, the sensor is no longer visible to other users in the
software, and therefore can no longer be selected.
If the sensor is switched on and not connected, it switches off
automatically after 5 minutes.
Selection of the sensor via the USB interface
For this purpose the sensor must be plugged into the USB
port of the end device. It is not necessary to switch on the
sensor. The sensor is automatically recognized and dis-
played. It can be selected and connected directly.
Topping-up the electrolyte solution
The lower end of the electrode can be unscrewed. This cap
covers the actual electrode. The entire cavity between the
cap and electrode must be filled with the liquid electrolyte (3
M KCl). Ensure that no air bubbles are entrapped. The elec-
trode comes supplied in an unfilled state. In addition, the liq-
uid evaporates gradually. This is why the liquid must be
topped up from time to time.
Fig. 2
Fig. 3
2
12933-01 / 4521
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