Wiren Board 5: ADC Extension Module

Universal module ADC. 12 bits. Adjustable gain (1-12 times) can accurately measure even small voltage

Three modes of operation:

1. ADC mode (jumpers open). Range of measurement is 0-3,3 V.

2. "Current" jumper installed . Mode input current up to 70 mA. Measurement accuracy - 1%. Range - up to 70 mA. Connection of current sensors.

3. "Resistance" jumper installed . Measurement of resistance of 0.1-10 ohms. Measuring accuracy up to 0.2% (with R ~ 1k).

Connection of sensors type Pt100, Pt1000, thermistor from 100 ohms to 10K.

4. Connect the sensor type Pt100, Pt1000 for three-wire system. Only one jumper closed "Resistance 1". Wiring in the figure. This connection allows you to take into account the resistance of the lead wires, the measurement more accurate.

O1 - GND. O2 - INPUT2 О3 - INPUT1

Operation

To be done