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TEHAUX
Ampermetro Sensible G Tabla Galvanmetro Ampermetro Microampermetro Fsica para
- Color Color Variado
- Size 13.3X9.8cm
- Weigth 165.0Grams
Viene completo en una carcasa de poliestireno personalizado.
Diseado para medir la corriente dbil o la diferencia potencial en el circuito de cc.
Un galvanizmetro es un dispositivo para indicar corrientes elctricas de cc muy pequeas.
Se puede utilizar para experimentos de induccin electromagntica, puente de piedra de trigo, termopar e induccin electromagntica
Adoptado de material, duradero y de uso.
Viene completo en una carcasa de poliestireno personalizado.
Diseado para medir la corriente dbil o la diferencia potencial en el circuito de cc.
Un galvanizmetro es un dispositivo para indicar corrientes elctricas de cc muy pequeas.
Se puede utilizar para experimentos de induccin electromagntica, puente de piedra de trigo, termopar e induccin electromagntica
Arthur Zatarain
Comentado en los Estados Unidos el 17 de agosto de 2024
The photo and online description indicates plus/minus 30ua. But the meter and "user manual" indicate the meter to be plus/minus 300 micro amps. I tested it with a digital micrometer and it was indeed off by a factor of 10. I'm returning it.
Mike B.
Comentado en los Estados Unidos el 18 de diciembre de 2024
I upgraded it with parts I had in stock.I replaced the fake banana jacksI replaced the 3rd connection with a switch that has 3 resistors in parallel (100, 100, 150) that I shunt for x100 readingsI made a laser engraved plate for labeling
Michael WR
Comentado en los Estados Unidos el 1 de septiembre de 2024
I needed a good meter to test the thermocouple on my pellet stove, this meter fits the bill. First, I wanted to test the accuracy of it. I set up a test scenario with one volt, actually 1.0007 volts, next, I found a very close tolerance 10k resistor, actually a 10.020K resistor. Remember I’m shooting for accuracy. Ohm’s law says Current through a circuit equals voltage over resistance, so I plugged in the numbers,1.0007 volts divided by 10020 ohms. This says I’m drawing 99.87 microamps. The Galvanometer is plus/minus 300 microamps so the meter should land right on, or close to the ‘10’ on the face.The meter is actually a “-300-0-300” movement but it’s labeled “-30-0-30”, just understand what it means. You can see the meter pointer is spot on even after I reversed the polarity of the setup. I know it looks a bit off, but that was due to a parallax error. Believe me, it was VERY close. The main thing about Thermocouples is, you mainly need to test if they work, meaning, do they create a voltage when heated? You rarely need an accurate voltage reading. The problem with regular volt-ohm-meters is, they usually only read down into millivolts, and thermocouples only output voltage in the microvolt region.So now I’ve got a great Galvanometer to test my thermocouples. The meter is not made from many vintage Bakelite meters, it is plastic but it seems built pretty well. The main thing is, you’ll never beat the price for this sort of accuracy. I’m very happy with it~!~Check out my photos, if you look closely the calculator reads .0001 Amp, but if you look at the bottom line it says, 9.9870259481038E-5, this is notation and if you do the decimal magic, it means 99.87 microamps (rounded of course). Also, I set the voltage at one volt, then I measured it with a very accurate standard meter. Then I took an accurate resistance reading of my 10k resistor, it read 10020 ohms.So, there it is… get one while their available, and you can beat it for the money.
Joe
Comentado en los Estados Unidos el 24 de agosto de 2023
After using and testing the item I found out that the item is not as accurate as the website claims, I needed more info all for the item. the manual was in Chinese language there is no manual in English to download or a link to English ManualJoe
KP
Comentado en los Estados Unidos el 20 de julio de 2023
I have this for a shelf decoration,in my office to just change it up between all the books.
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