ITTSB.EU Blog Forum
Special meters: Temperature | Distance | Data loggers => Temperature Thermocouple (Sensor) K Type, Pt100, Pt1000 => Topic started by: Kiriakos GR on April 08, 2024, 12:52:27 PM
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Hakko recently replaced old design of 191-212 Sensor with AS5000 Sensor.
Most to all times in a product review, actual product sample required for a close inspection, but not in this case.
Hakko marketing started talking in favor of AS5000, as this to be their next BIG THING.
I am very sorry Hakko, I do not see any magic in this new design, other than it footprint if this thing does not properly recycled when goes bad.
Just a careful visual inspection, will prove that AS5000 this not have any magical properties.
All that there is in there, it is a simple pair of thermocouple wire which has a different placement over the thermometer.
And also there is to it one washer of fireproof material, which this will lower the temperature recovery time of the sensor.
I can also describe this fireproof washer, as add-on heatsink or a cooling radiator.
I also think that measurement precision marketing of Hakko in favor of AS5000 as a simple firework.
Thermocouple wire this is standardized at production factory, then it sold by the kilogram.
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Hakko AS5000 Sensor Review
It appears that previews manufacturing process of old 191-212 Sensor this were leaving some room for error.
191-212 Sensor this is just two pieces of thermocouple wire, and the way that this would be anchored ( twisted pairs), it can not be uniform all times.
In order to make a number of ten identically manufactured 191-212 Sensor it is required high precision machinery too, and production site inspection so the customer to not receive product with defects.
In the case of AS5000 Sensor, its obvious that Hakko looked their own benefit as first, of a more easy manufacturing process for them.
And now they toss away their manufacturing cost at the side of consumer.
Therefore and in conclusion, YES identically formed sensor they do deliver identical results, even with out thinking electrical calibration.
Its all about identical use of thermocouple wire length, identical use of thermocouple wire termination (end to end), and the identical dimensions of this fireproof washer.
Unfortunately for Hakko, thermocouple wire specification alone, the best ones has +/- 1.2 C or percent of error.
And most Hakko thermometer these has +/- 3.0 C or percent of error.
This is a total of +/- 4.2 C or percent of error.
Example at 400C
400 + 16.8 = 416,8 Celsius
and or
400 - 16.8 = 395,8 Celsius
I am glad that Hakko dare to speak of electrical calibration, because my math producing an total of Error window of 21 Celsius :P
While electronic component manufacturer they require Error at soldering temperature of 10 Celsius as max.
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