Re: [Artisan-user] thermocouple discrepancy and other phidget settings
by corneel@boemboemklap.nl
Dustin,
You can always 'calibrate' thermocouples by boiling a pot of water and
measuring the temperature with your meter and thermocouple. This should
measure around 212 degrees F (or 100 degrees C) so any offset will
become clear.
Corneel
artisan-user-request(a)lists.einfachkaffee.de schreef op 29.06.2017 12:00:
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> 1. thermocouple discrepancy and other phidget settings (Dustin
> Fluke)
> 2. Re: thermocouple discrepancy and other phidget settings
> (Frans Goddijn)
> 3. Re: thermocouple discrepancy and other phidget settings
> (Marko Luther)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 28 Jun 2017 10:13:06 -0500
> From: "Dustin Fluke" <dustin(a)bluejazzjava.com>
> Subject: [Artisan-user] thermocouple discrepancy and other phidget
> settings
> To: <artisan-user(a)lists.einfachkaffee.de>
> Message-ID: <004b01d2f021$0c730fe0$25592fa0$@com>
> Content-Type: text/plain; charset="us-ascii"
>
> I'm relatively new to artisan. Been using RoastLogger for years but now
> that
> I have my phidget 1048 I don't need the camera/ocr feature anymore.
>
>
>
> I haven't been able to locate the help file or information about the
> settings under Config-Device - Phidgets tab. For instance, Async check
> boxes, raw data, change etc. I've found everything on the github page,
> but
> maybe I just haven't been successful in pinpointing the proper area to
> look.
>
>
>
> Secondly- I'm roasting on a Diedrich IR-24, which has a thicker J
> thermocouple than the one I've hooked up to artisan, which is a K type
> 1/8in
> I purchased here:
> https://www.automationdirect.com/adc/Shopping/Catalog/Sensors_-z-_Encoders/T
> emperature_Sensors_-a-_Transmitters/Thermocouple_Sensors/Probes_(with_Lead_W
> ire_Transition)/THMK-T06L06-01
>
>
>
> The temperatures are around 30 degrees F higher on the thinner K
> thermocouple than what the roaster is reporting, even though my
> thermocouples in the roaster are mounted next to each other (didn't
> want to
> piggyback on BT of the roaster to phidgets)
>
>
>
> Does anyone have any experience in this area? Perhaps the simple fact
> that
> the probe is thinner means the readings will be different, but I do not
> know. It would appear that the readings on the roaster are accurate
> while
> the other is much hotter.
>
>
>
> Just getting started, and appreciate any guidance.
>
>