Vaisala AWS310 Technical Note Download Page 6

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Checking Weather Station Grounding

While visiting the site, check also that the enclosure and the sensor cables are properly grounded.

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Checking Enclosure Grounding

Check that the enclosure grounding cable is connected to the system grounding point.

Cable lug with hole Ø 6.2 mm (0.24 in)

System grounding point

AC (mains) cable

Enclosure grounding cable

Technical Note

M212202EN-A

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Summary of Contents for AWS310

Page 1: ...Improving Grounding of Stainless Steel Flanges page 2 Improving Grounding of Rubber Flanges page 5 Checking Weather Station Grounding page 6 M212202EN A Technical Note Improving Weather Station Ground...

Page 2: ...Flanges Serrated lock washer A8 4 DIN6798 8 pcs Torque wrench 1 5 Nm 1 Loosen the screws 4 pcs that hold the flange at the bottom of the enclosure until you can remove the counter ribs inside the enc...

Page 3: ...2 Push the screws back to place and insert the serrated lock washers on the screws 3 Insert the counter ribs on the screws Technical Note M212202EN A 3 11...

Page 4: ...4 Tighten all the screws lightly one by one 5 Tighten all the screws to 4 Nm 6 Repeat the procedure on the second flange of the enclosure Technical Note M212202EN A 4 11...

Page 5: ...Rubber Flanges Torque wrench 1 5 Nm 1 Check that the screws with which the rubber flange is attached to the bottom of the enclosure are tightened to 2 6 3 0 Nm 2 Tighten the screws if needed Technical...

Page 6: ...ion Checking Enclosure Grounding page 6 Checking Sensor Cabling and Grounding page 8 Checking Enclosure Grounding 1 Check that the enclosure grounding cable is connected to the system grounding point...

Page 7: ...the enclosure grounding cable is connected to a grounded location such as grounding connector 1 2 3 4 1 System grounding point 2 Enclosure grounding cable 3 Grounding connector 4 Grounding cables Tec...

Page 8: ...ing tool Pipette rubber flange only Ferrules Shrinkable tubes or electrical tape Make sure that you prepare or connect only de energized wires WARNING To avoid strain on the connector make sure you co...

Page 9: ...s insert the pipette through one of the feed through rondels in the flange and pull the cable through If the weather station has stainless steel flanges strip the cables first c Strip the cable to exp...

Page 10: ...grounded to the cable glands In cable glands with EMC springs the cable shield must be firmly connected to the EMC spring 1 2 1 Cable gland 2 EMC spring In cable glands without EMC springs the cable s...

Page 11: ...s with rubber flanges check that the sensor cable shields have been grounded to the grounding rail 4 Check that all unused wires have been isolated with a shrinkable tube or electric tape Technical No...