Who makes a gauss meter?
10-15-2014, 02:26 PM
#4
10-15-2014, 02:36 PM
#5
10-15-2014, 03:14 PM
#6
It is based on a SS495A
http://docs-europe.electrocomponents...6b8009a37c.pdf
Working at 5v the zero point is at 2.5v. On one side there is a potmeter to adjust t0 zero. The calculated resistors for the 200mV digital meter is only to use the full range of the meter with the range of the hall sensor. Ideal to measure the differences between several rotors or with stockracing to detect illigal rotors.
If you want the real Gauss scale you need to calculate the right resistors.
The sensor needs to be on a 5~10mm distance of the rotor.
http://docs-europe.electrocomponents...6b8009a37c.pdf
Working at 5v the zero point is at 2.5v. On one side there is a potmeter to adjust t0 zero. The calculated resistors for the 200mV digital meter is only to use the full range of the meter with the range of the hall sensor. Ideal to measure the differences between several rotors or with stockracing to detect illigal rotors.
If you want the real Gauss scale you need to calculate the right resistors.
The sensor needs to be on a 5~10mm distance of the rotor.
10-16-2014, 10:10 PM
#7
Tech Fanatic
Look here for most all motor measuring needs http://racersmeasurementsystems.com/main.sc
10-17-2014, 01:43 AM
#8
Saw those on Superior Hobbies' website; however, they were always out of stock. So I bought the Fantom Facts Machine 2. While not technically a gauss meter, it does compare rotor strength (both the + and - sides) and provides gauss like numbers for each. Also provides stator coil resistance.
10-17-2014, 10:13 AM
#9
Tech Fanatic
08-07-2017, 11:57 PM
#10
It is based on a SS495A
http://docs-europe.electrocomponents...6b8009a37c.pdf
Working at 5v the zero point is at 2.5v. On one side there is a potmeter to adjust t0 zero. The calculated resistors for the 200mV digital meter is only to use the full range of the meter with the range of the hall sensor. Ideal to measure the differences between several rotors or with stockracing to detect illigal rotors.
If you want the real Gauss scale you need to calculate the right resistors.
The sensor needs to be on a 5~10mm distance of the rotor.
http://docs-europe.electrocomponents...6b8009a37c.pdf
Working at 5v the zero point is at 2.5v. On one side there is a potmeter to adjust t0 zero. The calculated resistors for the 200mV digital meter is only to use the full range of the meter with the range of the hall sensor. Ideal to measure the differences between several rotors or with stockracing to detect illigal rotors.
If you want the real Gauss scale you need to calculate the right resistors.
The sensor needs to be on a 5~10mm distance of the rotor.
(Magnetic Range (Typical) -670 Gauss to + 670 Gauss [-67 mT to +67 mT])
Surely a hall sensor is required that can measure up to around 1700 such as the SS94A2D?
I built one with the Allegro A1302 but it seems to top out at around 1350 for all rotors I tested.
Your circuit differs to mine. Do the resistors increase the range? It seems even combined, the range could only be 1340?
08-08-2017, 01:16 AM
#11
I use the SS495 sensor on a small distance. The resistor devider is just to get the output range of the sensor within the 200mV input range of the panel meter. I am not interested in a Gauss value because when building several you need to set the sensor with all on the excact distance, I just have build them so people can compare rotors with their meter.
With a LRP X11 17.5 turns stock rotor I have over here I set the readout op arround 1000 by moving the distance of the sensor, that is the middle of the total range of the meter.
With a LRP X11 17.5 turns stock rotor I have over here I set the readout op arround 1000 by moving the distance of the sensor, that is the middle of the total range of the meter.
08-08-2017, 01:27 AM
#12
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