I am testing the current sensor, but the current range is not sufficient.

Kits
1

I am testing the current sensor, which is SEN-12040 (INA169 current sensor), but the current range is not sufficient.

My interesting range is 0.2A ~ 40A.

So, could you recommend the product (or products), which can cover my current range?

2

I recommend checking out this product to see if it may fit your needs: https://www.sparkfun.com/products/16407

3

Thank you for your answer. I think it might work but, I want to know about the uncertainty.

Furthermore, I want to get the detailed circuit (inside chip) and sample circuit (with arduino, led, resister, etc).

Detailed datasheet and user guide is supplied for SEN-12040, but I can not find the detailed document of SEN-16407.

4

The data sheet for the INA-169 is at http://www.ti.com/lit/ds/symlink/ina169 … 9414410121

More info on the board can be found at https://www.kr4.us/KR-Sense-45A-Current … _3636.html

To connect it to an Arduino, you would connect Vout and Iout to analog pins on the Arduino and ground to ground. The INA-169 is powered from the source being measured.

/mike

5

Thank you.

6

I understand how to connect the chip to the Arduino.

However, I don’t know how to connect the chip with my circuit.

My simplified circuit is below.

https://ibb.co/4YTjj5C

I think I should connect the end of circuit to the chip. But I don’t know where to connect.

Please inform me like to somewhere and to somewhere.

Thank you.
7

Assuming that the resistor in your diagram is the load, connect the battery to the left side of the board (1 and GND) and the load to the right side (2 and GND). The sensor measures current flowing between 1 and 2, and voltage between 1 and GND (and is powered by 1 and GND as well). 3, 4, and 5 are all GND

/mike

8

Thank you.

So, you mean that I should split & into two strands, and connect to <1&3> and <2&5>?

9

No. Connect the battery between 1 (+) and 3 (-). Connect the load between 2 and 5.

10

Okay, I got it.

Thank you. Have a good day!