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Battery Impedance Meters
BRS
Messtechnik GmbH
Page 25 of 36
Version 1.7 / April2015
5.6 Measuring and monitoring voltage
Measurement
In parallel to measuring impedance, the terminal voltage is
measured. The measurement range can be switched between
5V and 60V.
As long as the voltage values are within the voltage monitoring
range (see section 4.5), the button is green. If the value goes above or below this
range, the colour changes to red. When monitoring is switched off, the button turns
grey.
Monitoring
The battery voltage can be monitored
in order to avoid overdrives or complete
dis
charge. To do this, click on the “ex-
tras” tab and turn monitoring “ON”. You
can now enter a lower and upper volt-
age limit in the right-hand boxes and
set them using the (<==) button.
When the values exceed the limits set, the green button next to the battery voltage
display turns red. At the same time, the measurement current is turned off and the
discharge of the battery caused by the impedance measurement ends. The voltage
and temperature measurements continue.
The digital output is also turned off. In other words, a switch is closed. This switch is
a potentially isolated transistor switch and can be used as both a high-side and a
low-side switch. The output is electrically isolated and relays or SPS inputs can be
connected.
Notes:
When inputting voltage values, use the decimal point to separate decimals.
A grey button next to the voltage display indicates that the voltage monitoring is
switched off.
When the measurement current is switched off, there is still a slight discharge
caused by the input resistance of the voltage measurement (ca. 50kΩ).
The two voltage limits are not permanently stored. When the current
is interrupted, the default values (0V, 60V) are reset.
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