Kearsarge 502 Process Timer - Overrun and 4/5 Digit Button Explanation

Todd Barlow · Nov 28, 2023

Hello all:
Does any have a Kearsarge 502 Process Timer?
If so, can you advise what the function of the "Overrun" and the "4/5 Digit" buttons are?
Thanks in advance.

PS: If you have a manual that would be great as well!
Todd

Hilo · Nov 29, 2023

This is guessing the answer to your question. Perhaps Overrun cancels whatever exposure time you entered?

You'd find out when you enter any exposure, and then push the button Overrun. Doing the same using the 4/5 button should explain that function.

I use three Kearsarge 301 timers between four enlargers. I have had these since the 1980ties. Great timers.

Patrick Robert James · Nov 29, 2023

I have a couple Kearsarge timers but they are a different model. I couldn't tell you what the overrun is but the 4/5 digit button is for full seconds or seconds and tenths of a second.

Todd Barlow · Nov 29, 2023

@Patrick Robert James, yes I see now that the switch allows you to enter 1/10's of a second or full seconds. Thanks for your response.
@Hilo, it seems with the Overrun button is engaged then after the time entered has expired it starts counting up until the user stops the timer. Thanks for your response.
All the best

Todd

Shaps · Jun 28, 2024

I too am looking for a manual. A friend has this timer and has recently started getting dementia and cannot remember a lot. I’m trying to help but this timer has a lot of options that are hard to figure out. Any help would be appreciated.

Kearsarge 502 Process Timer - Overrun and 4/5 Digit Button Explanation

Todd Barlow

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