User's Manual

Wisen Innovation Technical Doc. No.2021 WiSenMeshWAN® 4-Channel Vibrating Wire Interface Node - User Manual
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Figure 4. VW Sensor Connections (VW+, VW-, T+, T-, GND).
Notice 1: The cable gland diameter of the 1-VW Interface Node is 8mm.
Notice 2: All the 5 wires must be connected, to minimise electrical interference and possible loss of precision.
Notice 3: Within any electrically noisy environment, nodes with sensors must be >= 0.3m away from the source of
the noise.
6) Power On: Once all the VW sensors are connected, turn the switch on. Now you should be able to see 3 LEDs
flashing 3 times, which means the node is on properly. Then switch off the node to save power if the gateway is
off;
7) Tighten the 4 Cap-Hex-Head screws of the lid to secure the enclosure IP rating;
8) To validate the sensor data, please visit Wisen Visualisation Platform for further details.
5.4．Mounting Options
VW Interface Node can be deployed with various methods. However, the priciple is to make sure it is firmly attached to
the installation surface.
6. General Maintenance and Notification
1) Once a node is installed in the field, please minimise any man-made disturbance so that data quality
can be maintained;
2) Radio communication will be impaired if the antenna is covered by metal or very moist soil material;
3) Due to the discharge characteristics of the recommended battery, a battery replacement should be carried out
when a node reported voltage reaches 2.7V, at which point you have approximately 3 weeks to change the
battery;
4) Our product will use all the possible capacity in a battery down to a stop (minimum) voltage, which has been
specified in the Features table. When this occurs, our WiSenMeshWAN® protocol will send you a warning then it
will enter a deep sleep mode until a new battery is installed;
5) If the data from nodes are showing unexpected results or are not being sent back to the Wisen gateway, then
please carry out investigation using the following two stage procedure:
A. Remote Inspection of historical data, to identify the following: