j biesinger
TVWBB Platinum Member
hmmm, I guess bimetal therms are the analog dials. What I was thinking of was a thermistor therm.
the pen is a thermocouple
and yes, thermocouples do beat thermistors by MILES.
from thermoworks:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content"> Other digital thermometers found today in retail outlets use a very cheap sensor called a thermistor. The only problem with that is they’re relatively slow, taking 20 to 30 seconds to read a complete temperature. Many are even advertised as “Instant Read” and some packages boast a 1 second response time. This is misleading. What they really mean is the display updates at once per second. You still have to wait until the sensor comes to the full temperature of the food you’re measuring. Because a thermistor is made from carbon and epoxy; and it requires a tube size of 1/8" diameter, it really takes 20 seconds or longer to reach the full temperature. If you already have one of these, you can test its true response time by immersing it in a cup of ice water (mostly ice with only enough water to fill the gaps between the ice) and checking how long it takes to reach 32°F. You’ll be surprised. Now you know how long your thermometer takes to read a temperature. You can see that if you placed it in a cooking meat, read it after 1 second, and concluded that was the true temperature; you will have a reading that is much too low and you are going to overcook that meat! </div></BLOCKQUOTE>
man...Bill, you got me working hard today.
<- me tired, but more knowledgeable in the inner workings of thermometer.
the pen is a thermocouple
and yes, thermocouples do beat thermistors by MILES.
from thermoworks:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content"> Other digital thermometers found today in retail outlets use a very cheap sensor called a thermistor. The only problem with that is they’re relatively slow, taking 20 to 30 seconds to read a complete temperature. Many are even advertised as “Instant Read” and some packages boast a 1 second response time. This is misleading. What they really mean is the display updates at once per second. You still have to wait until the sensor comes to the full temperature of the food you’re measuring. Because a thermistor is made from carbon and epoxy; and it requires a tube size of 1/8" diameter, it really takes 20 seconds or longer to reach the full temperature. If you already have one of these, you can test its true response time by immersing it in a cup of ice water (mostly ice with only enough water to fill the gaps between the ice) and checking how long it takes to reach 32°F. You’ll be surprised. Now you know how long your thermometer takes to read a temperature. You can see that if you placed it in a cooking meat, read it after 1 second, and concluded that was the true temperature; you will have a reading that is much too low and you are going to overcook that meat! </div></BLOCKQUOTE>
man...Bill, you got me working hard today.
