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Induction Heating Probe
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To: tesla-at-grendel.objinc-dot-com
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Subject: Induction Heating Probe
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From: adams-at-intranet.ca
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Date: Tue, 16 Apr 1996 22:55:12 -0400
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>Received: from hal.intranet.on.ca (root-at-hal.intranet.on.ca [204.101.75.2]) by uucp-1.csn-dot-net (8.6.12/8.6.12) with ESMTP id VAA18567 for <tesla-at-grendel.objinc-dot-com>; Tue, 16 Apr 1996 21:55:29 -0600
Hi All,
Further to my suggestion for an induction heating probe made under the
Primary Coil Design thread initiated by Jeff W. Parisse:
Using a graphite tube 0.875 inches long, 0.375 inches outside diameter and
approximately 0.25 inches inside diameter, which was epoxied to the probe of
an alcohol thermometer (-20 to 130 degrees centigrade) I achieved the
following response.
With an Ameritherm 2.5 kW induction heater putting out a measly 50 watts,
and the graphite tube/thermometer located in the centre of a 1 inch ID, 5
turn solenoid the indicated temperature of the probe rose at a rate of 45
degrees centgrade in 1 minute. So about 1 degree C per minute per Watt
under these conditions or 1.8 degrees F/min/Watt.
IIIIII alcolhol thermometer
OOOOOOHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
IIIIII
^graphite tube epoxied to thermometer bulb
I would be interested to hear how this works at picking up RF hot spots on a
high power coil.
Harry Adams
adams-at-intranet.ca