User's Manual

Wisen Innovation Technical Doc. No.2021 WiSenMeshWAN® 4-Channel Vibrating Wire Interface Node - User Manual
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B. A gateway must be deployed, powered on and proven to be working properly. Otherwise, the nodes will
need to be switched off, then switched on again after a gateway is switched on. So simply speaking, the rules
to follow to correctly deploy a WiSenMeshWAN® system are:
Gateway first, then nearby nodes, then further nodes.
4) During deployment, the Serial Number, i.e., SN of a node and the orientation of the VW sensors deployed against
their site references must be recorded;
5) The connections between a customer chosen VW sensor and a Wisen VW Interface Node must strictly follow the
rules stated in this document;
6) All the node should have its antenna point upwards.
5.2．Choosing your VW Sensors
Most problems encountered during monitoring are caused by the cabling and the connections of VW sensors,
especially when environment is experiencing strong Electromagnetic (EM) interference, such as power tunnels. The
essential requirements when choosing a VW sensor are listed below:
1) The sensor cable: insulation sleeve, braid screen, 4 coils, one drain wire, where:
A. The braid screen is connected to the box;
B. The 4 coils are connected to the unit signal terminals;
C. The 1 drain wire is connected to the electrical circuit ground.
2) Reputable manufacturers.
(Notice : Wisen can always recommend an updated EMC solution and some suitable manufacturers around the
world to our customers. Please contact Wisen for further information).
5.3．Deployment Procedures
1) Open the box: Take the node out of the package and open its lid;
2) Insert Battery: By default, a node does not contain a D-Cell battery. Therefore the battery needs to be inserted.
Notice : +ve and –ve orientation must be correct, otherwise, the internal circuit may be damaged; As our VW
Interface Nodes has more than one battery installed, special attention must be paid to avoid shorting the battery
by the battery holder.
3) Antenna Installation: Screw the antenna tightly onto the node;
4) Sensor Installation: To ensure a customer chosen VW sensor is deployed onto a structure correctly, please strictly
follow the corresponding manufacturer sensor instructions. Once a VW sensor is deployed and pre-tensioned,