24-11-2023, 03:54 AM
Thanks to Howard's photos and information I have modified the posts of my ammeters terminals to allow it to be attached to the body with 5BA screws that go down the centres of the wire terminal posts:
Modified Ammeter.jpg (Size: 128.4 KB / Downloads: 199)
One thing I need to tell members to be aware of and check especially if you have had a short with your ammeter develop at some time is the following:
When working with my gauge I noticed that the mechanism was slightly loose and not tight to the body and could be moved about a bit. I checked for contact of each post to the body with a voltmeter and discovered that it was shorting to the body as a closed circuit instead of being open. This would go away if I moved the post in relation to the body. Both posts have to be insulated from the body. I intend to secure the mechanism in a position were it does not make contact with a suitable fixative.
Cheers,
Stephen
Modified Ammeter.jpg (Size: 128.4 KB / Downloads: 199)
One thing I need to tell members to be aware of and check especially if you have had a short with your ammeter develop at some time is the following:
When working with my gauge I noticed that the mechanism was slightly loose and not tight to the body and could be moved about a bit. I checked for contact of each post to the body with a voltmeter and discovered that it was shorting to the body as a closed circuit instead of being open. This would go away if I moved the post in relation to the body. Both posts have to be insulated from the body. I intend to secure the mechanism in a position were it does not make contact with a suitable fixative.
Cheers,
Stephen