Hi,

Early 2998 have radium lume plots and hands.

Does anyone know hoe much Micro Sieverts per hour ( µSv/h) it should emit ?

 

+1

I would love to hear from members what the results are, and what the watch actually looks like.

Me? I dont have a Geiger counter, and welcome suggestions.

 

You should buy one William. Compared to the value of your watches its just a friction (around 150 Pounds)

I use this one: https://www.amazon.co.uk/One-Compac...UTF8&qid=1529924922&sr=8-1&keywords=radex+one

Nico

 

I have this one and it's very simply to use
https://www.amazon.it/dp/B00MJBX8Y8...0MJBX8Y8&linkCode=df0&hvdev=c&hvnetw=g&hvqmt=

 

+1 for SOEKS as I have the same model.

Having said that they’re probably all good enough at doing what they’re meant to do.

 

+1 for the soeks

and it counts arround 17 on my 2998-4

within 2998-4/5 the switch from radium to tritium should have happend

 

17 µSv/h?

 

yep

 

Yeah, 17, 18 or so.

I use a gmc-320

https://www.ebay.com/p/GQ-GMC-320-Plus-Nuclear-Radiation-Detector/1658126926?iid=281259657729Purchases made through these links may earn this site a commission from the eBay Partner Network

 

I guys, I do work into a nuclear facility so I do have devices to measure a dose rate.
If you have a 2998 to give me, I can measure it for you

 

the geiger is not the single source of truth, one has to consider the number (17-20) and the behavior of the lume under UV light.
in case your geiger is below the number then get suspicious maybe hand(s) have been changed, which u can see in UV light

 

sorry my first thought was

 

I know, my friends just laugh of me all the time with this joke

 

When my 2913 reached 10 µSv/h I stopped it and immediately looked on the internet for a lead box.

 

OK... 10 µSv/h is not a big deal (on the health view).
Concerning the measure itself, the dose rate depends (among others) upon two main factors:

1) the distance from the source
2) the "shields" or "screens" between the source and the measurement device

So, what do you measure ? Are you measuring at the contact of the "naked" dial of at 1-2 cm from it ?
We use to say the dose rate decreases as a function of 1/d² with d the distance from the source. So, if you perform you measurement at 2 cm from the plots, the dose rate just dramatically drops from its original value (from the source).

Do you measure through the crystal ? If so, as part of the emitted radiations are "screened" by the atoms (whatever the physical state) it meets, the dose rate will be (highly) decreased by the crystal itself.

Once more, 10 µSv/h is not a big deal. The main problem with those radionucleides is more their (high) chemical toxicity...





Me working:

 

that seems very low for a 2913 ... mine shots to 24

 

130 uSv/h for a 2913... Seems a lot....

https://www.instagram.com/p/BkZp8h1HGtx/?utm_source=ig_share_sheet&igshid=2d8eyzfp8gqc

 

FYI, The above video is probably a PAF Railmaster with a Seamaster Dial. It is basically a 2914 RM.

While a vintage early 2914 Railmaster and 2913 Seamaster share similar lumed BA hands and dial plots, a proper original 2913 Seamaster has an additional lume (radiation) source that the 2914 Railmaster does not.
An uncovered radium Pipper dot at 12 o’clock on the bezel. Therefore, all other things being equal, the 2913 would have a higher reading.

See below 2913-1

 

I like the old ones. Here's some of mine.

https://www.youtube.com/channel/UCdBIn-eTU4Wa7ttfSTy_G5A