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2024-08-21 16:27:36
in reply to

F4JWJ, Pierre on Nostr: Weston cell. EPLEY is the manufacturer ? I've (somewhere...) a ancient voltage ...

Weston cell.
EPLEY is the manufacturer ?

I've (somewhere...) a ancient voltage reference unit containing 4 Weston Cells, with calibration certificates.
It has a battery powered, temperature controlled housing.

The contacts are 99.99% pure copper, and all cabling is supposed to be pure copper too (dissimilar metals => extra galvanic voltage, thermocouple).

These cells don't like high temperatures nor supplying any current.
If this happens, it can take months to stabilize again.
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