Extruder Temperature Sensors August 19, 2021 06:22PM |
Registered: 4 years ago Posts: 285 |
Re: Extruder Temperature Sensors August 19, 2021 06:43PM |
Admin Registered: 16 years ago Posts: 13,890 |
Re: Extruder Temperature Sensors August 19, 2021 07:21PM |
Registered: 4 years ago Posts: 285 |
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VDX
... for high-temp measuring and temp-controlling I were using PT100 and NI200 sensors with high resolution 24Bit AD-controllers (AduC847) -- for testing and adjusting I've combined two PT100 "back to back" and heated (and measured) of up to 800°C with them (they were max-rated for 650°C)
Beside the common "flat" type there are cylindrical 2mm-types in a ceramic housing (could be aluminium-oxide), what's easy to insert and clamp into a 2mm-bore ...
Here is a similar type, only rated to 400°C:
[www.temperaturmesstechnik.de]
Re: Extruder Temperature Sensors August 20, 2021 12:53AM |
Admin Registered: 16 years ago Posts: 13,890 |
Re: Extruder Temperature Sensors August 20, 2021 01:50PM |
Registered: 12 years ago Posts: 1,450 |
Re: Extruder Temperature Sensors August 20, 2021 07:51PM |
Registered: 4 years ago Posts: 285 |
Re: Extruder Temperature Sensors August 21, 2021 06:03AM |
Registered: 12 years ago Posts: 1,450 |
Re: Extruder Temperature Sensors August 21, 2021 06:44PM |
Registered: 4 years ago Posts: 285 |
Quote
leadinglights
I did not realize that platinum RTD sensors were available at low cost and in small sizes. The last time I used a PT100 sensor it was fiercely expensive, quite bulky and needed a dedicated amplifier.
For the time being I will stay with my thermocouples for the reasons stated earlier but hope to find a project where I can use a PT1000 sensor.
In passing though, to go with your platinum sensor, silver block and diamond nozzle, you could consider Edit: 24 K gold “O” rings to seal the nozzle and heat break against leakage. Gold “O” rings were used on a Kratos mass spectrometer head that I worked on and they would take being heated up to 500°C
Mike
Re: Extruder Temperature Sensors August 21, 2021 07:03PM |
Admin Registered: 16 years ago Posts: 13,890 |
Re: Extruder Temperature Sensors August 21, 2021 10:24PM |
Registered: 4 years ago Posts: 285 |
Quote
VDX
... when I was at university at end-80, we sometimes used gold-O-rings for UHV assemblies for GSI and Cern ... but as they were pretty expensive, whe had to "track" them constantly and return with "same weight", when dismantling the assemblies eventually
From this time I have only a bunch of Aluminium O-rings for random use ... but, years later, got some 99.999 gold-cylinders (each 2g in weight, meant as electrodes) for a microassembly development project, that weren't recalled after end
Re: Extruder Temperature Sensors August 22, 2021 09:53AM |
Registered: 12 years ago Posts: 1,450 |
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rq3
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Should I gold flash the silver heat block? It's immersion gold, takes 30 seconds. Pros, Cons? Looks cool, costs money, wastes resources, adds corrosion protection (not).