Products > Test Equipment
Measuring the temperature of a soldering iron tip
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KungFuJosh:

--- Quote from: DaneLaw on August 21, 2023, 04:15:00 am ---(no idea where mine is)

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Search for Hakko 191212 and you can get replacements.

Direct from Hakko: https://hakkousa.com/191-212-replacement-sensor-for-fg-100b-100-101-tip-themometer.html

I think the generic sets are under $10 on eBay.
wraper:
Chinese sensors should be just fine, It's quite difficult to screw up when making type K thermocouple. On other hand, screwing up with the device is much easier, especially when you cannot be bothered with calibration and don't care about cold junction (room temperature) compensation.
AmnevaR:

--- Quote from: KungFuJosh on August 21, 2023, 02:45:33 am ---Two things to also consider regarding accuracy: the tip sensors are disposable, and can only accurately measure a limited amount of times. It is also sometimes helpful to use a drop of solder as a heat bridge.

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You are absolutely right.
I have to measure temperature of soldering irons at work once a month.
I want to add that those sensors are crap. I can't get more than 20 measurements out of one sensor. The temperature reading starts jumping all over the place when the sensor starts to fail. Of course, I didn't overheat them - one measurement is no longer than 10 seconds.

We bit the bullet and bought a few of these "better" AS5000 sensors: https://uk.farnell.com/hakko/as5000/long-life-sensor-soldering-thermometer/dp/3585821
I have already taken several hundred measurements with one sensor without any problems.
If you want to frequently measure temperature of soldering irons I would recommend to get a better sensor and save money in a long run.
jonpaul:
Most accurate is type K thermocouple, thin guage wire , Fluke temperatur meters like model Fluke 51 or Kiethley 871.

Jon
JimKnopf:
@AmnevaR

--- Quote from: AmnevaR on August 21, 2023, 01:54:26 pm ---
We bit the bullet and bought a few of these "better" AS5000 sensors: https://uk.farnell.com/hakko/as5000/long-life-sensor-soldering-thermometer/dp/3585821
I have already taken several hundred measurements with one sensor without any problems.
If you want to frequently measure temperature of soldering irons I would recommend to get a better sensor and save money in a long run.

--- End quote ---

Feels a bit like putting lipstick on a pig, i paid 40 Euro, double the price of the FG-100 clone, but i will try the result for educational purpose.
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