Gill Instruments Ltd
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MetPak/MetPak RG and MetPak Pro Base Stations
Page | 16
Issue 1
Doc. No. 1723-PS-0023
October 2018
4.2.
Base Station Anemometer 10 Metre Cable Assembly.
Base Station variants come with an integral 10 Metre, Belden 8104 cable (7 wires and a screen)
fitted to the hub box connector J4, (RS422 interface).
The cable is terminated in connector solder contacts for installing into a WindSonic Option 2/3/M
with Clipper Connector or WindMaster/WindMaster Pro Clipper Connector (connectors supplied
with the Wind Sensor).
This Anemometer RS422 cable can be extended using twisted pair screened cable if required
within the bounds of RS422 communication limits and ensuring the anemometer receives its
minimum supply voltage.
The cable provides communication and DC power to the Wind Sensor. Care must be taken
not to short out contacts should the base station be powered before a connector is fitted.
If used with a WindObserver or WindSonic M with Analogue Outputs the 10 metre cable contact
pins will need to be cut off and wire stripped/soldered for use with their respective connectors or
termination into the optional Heater Power Interface Box.
If shortening the 10 Metre cable to a required length, strip and prepare as follows:-
1. Trim back the screened cable outer PVC sheath to 52mm.
2. Trim back the braid and drain wire to 20mm from the outer sheath.
3. Separate braid and drain wire from the foil and cores. Twist braid and drain wires
together.
4. Trim the twisted braid and drain wire to 15mm from the outer sheath and tin ends
5mm.
5. Cut the foil and White/Green wire back to within 5mm of the outer sheath.
6. Strip and tin one end of the White/Green wire removed to 5mm.
7. Locate White/Green wire to twisted braid and drain wire and solder.
8. Insulate the White/Green wire joint.
9. Strip back the connection wires by 4mm and tin solder.
10. Solder the contact pins supplied with the connector to the wires.
11.
Note
that the hub box sensor connector supplies the correct strain relief for
cables with an outside diameter of 6-12mm.
4.2.1.
WindSonic and WindMaster Clipper Connector Assembly Details
Route the cable through the connector parts as in direction shown below (WindSonic connector
shown, the WindMaster Connector is similar).
Cable Sleeve
Contact Pin
