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nuckolls.bob(at)aeroelect
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 Posted: Tue Dec 04, 2012 1:20 pm Post subject: TM-902C Digital LCD K Type Thermometer meter |
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At 02:57 PM 12/4/2012, you wrote:
| Quote: | --> AeroElectric-List message posted by: marvin haught <handainc(at)madisoncounty.net>
I saw the thread a while back on this temp meter, and guess I missed most of it. I just ordered 10 of the units for resale (I am a distributor for Stewart Systems Aircraft Finishes) and decided the meter was a cheap alternative for the $25 multimeter that I've been selling for calibrating irons used to shrink fabric. I thought I saw a message where someone calibrated the meter using boiling water? Is my memory correct? Can someone either send that message to me again or steer me to it? |
From my archives:
------------------------------------
The procedure I used was to immerse the probe in ice water and adjust the display to 0 deg C. Next was to immerse the probe in boiling water and adjust the display to 100 deg C. Repeat until no further adjustment is needed.
On 10/24/2012 05:07 PM, rayj wrote:
| Quote: | Greetings,
I calibrated the 3 TM-902C hand held instruments. I was able to adjust them to read the same at both 0 and 100 deg C. It seemed to take 2-3 cycles from cold to hot and back to get them to settle down, but once they did they all were very consistent at both ends of the range tested.
As I reviewed Bob's posting I noticed that the boards in mine are a different layout than the one pictured. I'll include a picture of mine if I can get to upload.
On mine one adjustment point is to the left of the yellow connector (6:30 position) near the edge of the board. The second is located at the 3:00 position.
The 6:30 position adjusts the readout at 0 deg C. The 3:00 position adjusts the readout at 100 deg C. As I mentioned earlier it seemed to take 2-3 cycles before it becomes stable.
On both adjustments turning clockwise lowered the value displayed. CCW raised it.
| Quote: | --
Raymond Julian
Kettle River, MN
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Bob . . . [quote][b]
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handainc(at)madisoncounty
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| Posted: Tue Dec 04, 2012 3:34 pm Post subject: TM-902C Digital LCD K Type Thermometer meter |
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Thanks Bob - Just what I needed.
M. Haught
On 12/4/2012 3:19 PM, Robert L. Nuckolls, III wrote:
[quote] At 02:57 PM 12/4/2012, you wrote:
| Quote: | --> AeroElectric-List message posted by: marvin haught <handainc(at)madisoncounty.net> (handainc(at)madisoncounty.net)
I saw the thread a while back on this temp meter, and guess I missed most of it. I just ordered 10 of the units for resale (I am a distributor for Stewart Systems Aircraft Finishes) and decided the meter was a cheap alternative for the $25 multimeter that I've been selling for calibrating irons used to shrink fabric. I thought I saw a message where someone calibrated the meter using boiling water? Is my memory correct? Can someone either send that message to me again or steer me to it? |
From my archives:
------------------------------------
The procedure I used was to immerse the probe in ice water and adjust the display to 0 deg C. Next was to immerse the probe in boiling water and adjust the display to 100 deg C. Repeat until no further adjustment is needed.
On 10/24/2012 05:07 PM, rayj wrote:
| Quote: | Greetings,
I calibrated the 3 TM-902C hand held instruments. I was able to adjust them to read the same at both 0 and 100 deg C. It seemed to take 2-3 cycles from cold to hot and back to get them to settle down, but once they did they all were very consistent at both ends of the range tested.
As I reviewed Bob's posting I noticed that the boards in mine are a different layout than the one pictured. I'll include a picture of mine if I can get to upload.
On mine one adjustment point is to the left of the yellow connector (6:30 position) near the edge of the board. The second is located at the 3:00 position.
The 6:30 position adjusts the readout at 0 deg C. The 3:00 position adjusts the readout at 100 deg C. As I mentioned earlier it seemed to take 2-3 cycles before it becomes stable.
On both adjustments turning clockwise lowered the value displayed. CCW raised it.
| Quote: | --
Raymond Julian
Kettle River, MN
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------------------------------------
Bob . . . [b]
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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