How to read readings from the mechanical meter (except for image recognition)?

There is a gauge having a dial and an arrow. It is necessary to consider his statement. Is there any options to do
it's like that, except for recognition of pictures of the dial?
July 9th 19 at 11:11
4 answers
July 9th 19 at 11:13
If the sensor detects something electric, it is possible to measure the value of the right from the entrance.
If it's something like a water meter or pressure sensor in the water...
To disassemble the sensor can be (access-wise)?
July 9th 19 at 11:15
Would you a theme more revealed.
Much input can be:
1. Which sensor? - for measuring all electrical quantities are easier to turn on parallel for example, and take readings. For non-electric this option, of course - is not suitable.
2. What precision is needed? This very different approach to the evidence.
3. Is it possible to get to the insides? If he sealed and certified the approach the other.
4. How often to shoot? If, for example - need to detect jump arrow keys - need a fundamentally different approach compared to the shooting of smooth readings.
5. The surrounding conditions (noise, vibration, dust, high humidity, the conditions of the hot shop, street conditions, etc.)?
6. How far is the data transfer?
etc.
You need a clever engineer, hike, and not a Council forum.
If it comes to practical implementation, then Yes, you need engineers. Still need a workable theoretical solution. The questions will clarify will add to the cap. - terrence.Mraz commented on July 9th 19 at 11:18
July 9th 19 at 11:17
To check availability contact, electronically measure the resistance, a different way to determine the position of the needle, it all depends on the sensor.
July 9th 19 at 11:19
Waiting for comments on the type of sensor.

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