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Kosmic:
Look at that, my 34401a is reading a PT100 sensor 8)
This is awesome, thanks a lot guys! :)
iMo:
THERMistor:TYPE {2200,5000,10000} <- Thermistor type (in ohms)
With what b-constant?
Hydron:
--- Quote from: imo on January 24, 2023, 07:02:48 pm ---THERMistor:TYPE {2200,5000,10000} <- Thermistor type (in ohms)
With what b-constant?
--- End quote ---
That is a very good question that's rather poorly answered by HPAK, even for instruments that are meant to natively support temperature measurement. The only info I found was "44000 series" in the 34970A data sheet ("Thermistor 44004, 44007, 44006 series"), which has gotta be these: https://br.omega.com/omegaFiles/temperature/pdf/44000_THERMIS_ELEMENTS.pdf
I think a bit of testing is in order to verify it though (especially checking whether "2200 ohms" is actually 2252); I'm gonna stick with RTDs for now as I have a couple of nice 4W PT100 probes.
@Kosmic - I did indeed crib heavily from the 34970A manual - it actually also has the save/recall stuff, I just didn't get it to work first try as I didn't put a number after *SAV/*RCL. :) Note that my questions about custom aperture aren't regarding what the SCPI command is (that works similarly to the 34970A, see the end of the first code block where I put my notes), just that it's behaviour is a bit different to the front-panel option.
iMo:
--- Quote from: Hydron on January 24, 2023, 07:26:17 pm ---
--- Quote from: imo on January 24, 2023, 07:02:48 pm ---THERMistor:TYPE {2200,5000,10000} <- Thermistor type (in ohms)
With what b-constant?
--- End quote ---
.. The only info I found was "44000 series" in the 34970A data sheet ("Thermistor 44004, 44007, 44006 series")
--- End quote ---
Eeach of the above type from that series has a different beta.. :)
PS: 34410A service manual:
Probe types: 2.2 kW, 5 kW, 10 kW thermistors; 0.00385%/ÂșC RTD
Kosmic:
--- Quote from: Hydron on January 24, 2023, 07:26:17 pm ---@Kosmic - I did indeed crib heavily from the 34970A manual - it actually also has the save/recall stuff, I just didn't get it to work first try as I didn't put a number after *SAV/*RCL. :) Note that my questions about custom aperture aren't regarding what the SCPI command is (that works similarly to the 34970A, see the end of the first code block where I put my notes), just that it's behaviour is a bit different to the front-panel option.
--- End quote ---
Ok good good. I thought you were looking at the firmware and poking around in SCPI to find the cmds.
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