How to measure heater block temperature? August 08, 2017 05:41PM |
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Re: How to measure heater block temperature? August 08, 2017 06:15PM |
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Re: How to measure heater block temperature? August 08, 2017 07:52PM |
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Re: How to measure heater block temperature? August 08, 2017 08:00PM |
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Re: How to measure heater block temperature? August 09, 2017 10:23AM |
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Re: How to measure heater block temperature? August 09, 2017 11:16AM |
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Re: How to measure heater block temperature? August 09, 2017 02:46PM |
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Re: How to measure heater block temperature? August 09, 2017 03:55PM |
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Quote
PeterHi
I had the same problem, the hotend temperature was not in sync with the recommended temperature for the PLA.
You can measure the temperature from aluminum with a IR gun, but you have to adapt the emission factor to the material. The range for aluminum is quite large, it depends on the surface.In addition the measuring spot on my IR thermometer is several cm² and measuring reliable such a small object like a hotend is not possible.
It has a K-Type Thermocouple in addition, but the probe is pipe which is appr. 3mm thick. Great to measure fluids, not so great to measure hotends.
I got myself a thermocouple amplifier from Adafriut and a Type K Thermocouple with a small head of the probe. You can add the small probe under the screw which holds the NTC of the hotend.
The amplifier connects to an Arduino and here is detailed description how to do it.
You get the amplifier and probe also cheaper from China, but I deliberately went for the more expensive one hopping they are using an original MAX31856
With the thermocouple I created a new NTC table for the Marlin and now the recommendations for the PAL are in sync with the hotend temperature. At high temperatures it was almost 20°C off
Peter
Re: How to measure heater block temperature? August 09, 2017 08:04PM |
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Re: How to measure heater block temperature? August 09, 2017 08:10PM |
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