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6.
The place directly below the ultrasonic probe should avoid to be put in some position to reduce the impact on measurement
accuracy. For example, the position that the liquid level is violently fluctuating such as the water inlet and outlet, and the position
that foam floats are easy to accumulate.
7.
There should be no obstacles within the radiation range of the ultrasonic beam to avoid affecting the measurement. For example,
when installing in a well, it should avoid escalators, water inlet and outlet pipes and other facilities in the well.
8.
The installation site should be far away from the equipment that produces strong electromagnetic interference.
9.
The user only needs to disassemble and assemble the new battery when installing it.
Please do not touch the waterproof adhesive strip, waterproof fixing head, waterproof LED light and waterproof bottom during the
process of assembling the battery. After the installation of the battery, an electric screwdriver with a torque of 4kgf must be used to
assemble the shell screws (if there is no electric screwdriver, please use a cross screwdriver with an appropriate screw to assemble
and lock to ensure that the upper cover and the lower cover are assembled tightly), otherwise the air tightness after assembly will
be affected. When disassembling and assembling the device, it is recommended to understand the internal structure of the device
first to avoid device damage.
8. Information about Battery Passivation
Many of Netvox devices are powered by 3.6V ER14505 Li-SOCl2 (lithium-thionyl chloride) batteries that offer many advantages
including low self-discharge rate and high energy density.
However, primary lithium batteries like Li-SOCl2 batteries will form a passivation layer as a reaction between the lithium anode and
thionyl chloride if they are in storage for a long time or if the storage temperature is too high. This lithium chloride layer prevents rapid
self-discharge caused by continuous reaction between lithium and thionyl chloride, but battery passivation may also lead to voltage
delay when the batteries are put into operation, and our devices may not work correctly in this situation.
As a result, please make sure to source batteries from reliable vendors, and the batteries should be produced within the last three
months.
If encountering the situation of battery passivation, users can activate the battery to eliminate the battery hysteresis.
8.1 To determine whether a battery requires activation
Connect a new ER14505 battery to a 68ohm resistor in parallel, and check the voltage of the circuit.
If the voltage is below 3.3V, it means the battery requires activation.
