For long term indication of in-service maximum temperatures Anyone know of (UK preferably ) supplier of labels with more range and less precision than the likes of the usual 5 temperatures in small ranges like,
116-138 degC 171-193 degC 204-260 degC say 5 temperature range of 70,100,130,160,200 on single labels-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on
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I may make my own rough indicators. So a few common tested materials
Photocopier toner wiped onto paper label starts fusing about 90 degrees C White soap rubbed onto paper label turns brown at about 160 degrees. From a selection of those small circular sticky backed paper circles of different colours, the blue one changed most to very dark blue at about 200 deg C and flourescent green one became ordinary green. Mylar plastic sheet starts crinkling up at 120 deg C , totally melting by
180 deg. Any other ideas ?-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on
A simple Google search for crayon temperature uk found this site. There were others.
Charlie
like,
200One other material I'd overlooked is thermal paper for fax or till roll
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on
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by
The till roll paper I tried started to go blue at 75 deg C , so an assorment of punched out paper dots with appropriate coatings/impregnations and high temp glue should give a reasonable idea of max temps
You can buy ready made temp sensitive labels you know.
Ron(UK)
Do a search on temp-spy+adhesive. There are several results.
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"Model TS3 covers a narrow range of approximately 20°C with 3 indicators." I'm already perfectly aware of such labels but my OP referred to a much more extended range of temps, which I've yet to see examples of or be pointed to.
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on
In message , N Cook writes
Have you clicked on 'Catalog'? Whal seem to have a fair selection of ranges. Ian.
-- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida
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