round 45mm photovoltaric ? where ?

[oz2cpu]

i need a 45mm round photovoltaric any one seen that ?

https://youtu.be/wRORiFsNX2U

[DavidKo]

Are you sure that the detector is damaged? Maybe you can try to connect the meter directly to the cell and measure the current. It can be bad contact. between cell and wiring.

Edit: or something can be shortening the photocell.

[oz2cpu]

like i show in the video, the meter works, but the sensor dont deliver any current,
the sensor deliver plenty of voltage when unloaded, but the meter unly use very little current,
in the range of what i guess it normal for that time,
so i am sure it is the sensor it self,
i think it was allready up before, something about photovoltaric, specially the old ones dont live forever.

[jdragoset]

Plenty of these
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2505460.m570.l1313&_nkw=weston+light+sight+meter&_sacat=0
out there elements appear to be 45 mm
Check with DVM on milliamp scale connected to sensor for current output.
The Weston elements use circular contact rings that are subject to contact resistance problems.
Since the back side of the sensor disc is directly connected to one wire, the front contact ring may be high resistance.
Try slight rotation of the sensor disc while slight pressure is applied to the back spring.
The Weston 703's function can be restored by slight rotation of the top glass.