User manual

Operating Instructions OPUS20E For external sensors
6
EN
When the acoustic function is activated, an alarm signal alerts the user when
an alarm incident occurs. The alarm for one or more than one measurement
must have been previously set using the SmartGraph software.
When the acoustic function is activated, the data logger also emits a tone each
time the mode selection key is pressed while navigating through the individual
levels or when a specific mode is selected.
The data logger also emits a tone when you leave the settings level without a
previous selection having been made.
7. Connecting and Configuring
External Sensors
The data logger has a 5-pin, circular connector (M12) for connecting digital,
bus-compatible sensors (BUS sensors) and a 10-pin connector with two inde-
pendent input channels for connecting up to two analog sensors.
7.1 BUS Sensors
7.1.1 Connecting BUS Sensors
Attach the BUS sensor to the 5-pin circular connector on the data logger (see

, chapter 3). The sensor is powered via the connector.
By using up to three Y-junctions (option), up to four digital
BUS sensors can be connected to the data logger.
You will find more information about the BUS sensors
that are currently available in the technical data
in chapter 11.
7.1.2 Configuring BUS Sensors (M6x)
In order to use BUS sensors with the data logger, each BUS sensor first has to
be individually logged on to the data logger.
The configuration process is only available when the data logger is not
in the logging mode (M3 or M4).
You can configure BUS sensors on the data logger as described below. Alterna-
tively, you can also do this directly using the SmartGraph software. You will
find more detailed information about configuring sensors using the software
in the software manual, which you can call up using the Help function of
your SmartGraph software.
To configure on the data logger, connect the first BUS sensor to be logged on to
the 5-pin circular connector

of the data logger and then - as described in
chapter 6.2 - use the mode selection key to navigate to configuration mode
M6x. The option to register the BUS sensor is shown on the display (n1 for the
first sensor to n4 for the fourth sensor).
You can initiate the registration of the BUS sensor by briefly pressing the mode
selection key. The display then switches to the scan mode and the connected
BUS sensor is automatically detected and identified.
On identification the sensor is given a four digit BUS ID. The first two digits of
this ID represent the sensor type (for example 71 for TFF sensors).
S
elect acoustic function M53 Display example of the acoustic function M53
The last two digits represent the sensor number and are assigned automatically
according to the log on sequence - from 01 for the first logged on sensor to 04
for the fourth logged on sensor.
Once the sensor has been logged on, a message indicating the BUS ID is also
shown for your information – the message symbol flashes in the lower right cor-
ner of the display. You can close this message display by briefly pressing the
mode selection key.
R
Tip: For future measurements, make a note of the
BUS ID directly on the sensor.
If several sensors are to be used, in accordance with this procedure each indi-
vidual sensor must first be connected to the data logger, logged on and registered
with a BUS ID.
Alternatively, you can also configure the BUS sensors directly
using the SmartGraph software.
You will find more detailed information on the software-related aspects
concerning the configuration of BUS sensors in the software manual which
you can call up using the Help function of your SmartGraph software.
7.1.3 Logging off BUS Sensors (M7x)
To log off a BUS sensor that was previously logged on to the data logger, use
the mode selection key to navigate to configuration mode M7x. The option to re-
move the first BUS sensor is displayed.
It is not necessary to connect the sensor to the device in order to log off.
If several BUS sensors were logged on earlier and you want to remove a sensor
other than the first one, press the mode selection key repeatedly until the
BUS ID of the sensor to be removed is displayed.
You can now initiate the logging off of the BUS sensor by briefly pressing the
mode selection key. Once the sensor has been logged off, a message indicating
the BUS ID is also shown for your information – the message symbol flashes in
the lower right corner of the display. You can close this message display by
briefly pressing the mode selection key.
7.2 Connecting Analog Sensors
The data logger has a 10-pin connector with two independent input channels
for connecting up to two analog sensors. Input channel 1 with pins 1, 3, 5, 7
and 9 and input channel 2 with pins 2, 4, 6, 8 and 10 (see

, chapter 3).
Each of the two input channels supports the sensor configurations detailed
in the following sub-sections.
D
isplay example: Select log on function
M61 to log on the first BUS sensor (n1).
D
isplay example: Message display
indicating the BUS ID (71.01) for the first
l
ogged on BUS sensor.
Display example: Select log off function
M70 to log off the first logged on sensor.
Display example: Message display
indicating the BUS ID (71.01) of the
logged off BUS sensor.