User's Manual

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Measurement limits. The app allows setting measurement limits. When a measurement value is in
between the specified limits it will be displayed with black. If the measurement is outside of the specified limits
(less than the low limit or more than the high limit) it will be displayed in red. This feature allows for easy
identification of parameters that are not within normal limits. In order to configure the limits, tap on the top
right corner menu button when on the scan screen. The voltage limits set here are also used in the main screen.
Connect to PowerMon devices. In order to connect to a device, tap on it in the scan list. The app will
switch to the main screen which can be used for all the interactions with a connected device. The main screen
displays the real-time electric parameter measurements. By long-tapping on a parameter tab, the user can
access a menu that is specific for that parameter. This will allow to set measurement limits, zero the current
offset, calibrate the current reading, reset the power and the charge meters and manually control the power
relay.
Zero the current offset. Due to the high sensitivity of the current measurement circuitry inside the
PowerMon-5S device, the value displayed may have a small offset (measurement is different than zero even
when the actual current is zero). Typically, this is less than 0.1A. In situations where the measurement precision
is critical, the offset can be zeroed. To do this, disconnect the LOAD terminal wire from the device or make sure
the actual current is zero. This can also be achieved by turning the power relay off from the application (in case
the system is wired with a relay). Tap on the “Current” tab and then “Zero Current”. The operation will take 3
seconds to complete during which do not allow any current to pass through the device. Also, do not zero the
current offset if the actual current is greater than zero. Doing so will introduce a very large offset. Basically, any
current that is flowing through the shunt when the Zero Current operation is performed will become the new
indicated zero.
Current calibration. Typically, the device can measure current with better than 1% precision. If higher
precision is required, the current measurement can be calibrated allowing better than 0.5% precision. To
calibrate the current reading, a multimeter capable of measuring current with a precision better than 0.5% is
required. Connect the multimeter leads in series with the current to be measured and read the actual value of
the current. Tap on the “Current” tab, “Calibrate Current” and then type the actual value measured by the
multimeter. The sign of the current does not matter. Once calibrated, the only way to change the calibration is
to reset the device to factory defaults or re-calibrate. The device will not accept a calibration current different
from the actual current reading by more than 10%.
Renaming the device. Renaming the device can be achieved using the top right menu button and taping
on “About”. The maximum name length is 8 characters.
Timers. From the “Timers” screen, users can create new timers, edit or delete them.