Philip Eden wrote:
"Richard Dixon" wrote in message

I would have thought the response time of an automatic thermometer to a
short-period change would be much shorter than a standard mercury
thermometer? I'm no expert, I'm sure others on here with
instrumentation knowledge would say more. But if this is the case, for
the same day, if there are short-term fluctuations in temperature on
top of the daily "sine wave" of temperature, then surely the modern


I can only speak from about 25 years ago when developing early AWSs at
Beaufort Park, but I can't remember any attempt to filter readings from
the standard Pt100 sensors to match the thermal time constants of mig
thermometers.

Martin

Philip