Boards specifications
Measurement board
This section introduces the OhmPi measurement boards. Starting from this year, it has been possible to use any measurement board with the latest OhmPi code. Consequently, the OhmPi group provides a variety of board options tailored to your technical needs (e.g., laboratory measurement, field measurement), budget, and electronic skills.
The characteristics of each measurement board are described in the following table:
Recognize the version of the measurement board
Measurement board V2023.0.1
Measurement board V2024.0.2
Specifications
Parameters |
v2023.0.1 |
v2024.0.2 |
Units |
|---|---|---|---|
Vmn number of channels |
1 |
1 |
|
Operating temperature |
0 to 50 |
-25 to 50 |
°C |
Max. permissible Vab |
24 |
200 |
vdc |
Power supply |
12 |
12 |
vdc |
Current with 2 ohms shunt resistor |
0.11 to 40 |
0.11 to 500 |
mA |
Min pulse duration |
50 |
50 |
ms |
Max pulse duration |
15 |
15 |
second |
Vmn input impedance |
80 |
1000 |
MOhm |
Vmn range |
-/+ 5 |
-/+5 |
volt |
Assemble measurement board (MB)
Multiplexer board
Measurement board are limited to four electrodes (A, B, M and N). Multiplexer board are composed or electrical relay (electronic switches) that enable to route the signal from A, B, M or N from the measurement board towards the specified electrodes. Multiplexer boards are needed for a multi-electrode system.
Recognize the version of the MUX boards
Measurement board V2023.0.1
Measurement board V2024.0.2
Specifications
Parameters |
v2023.X.X |
v2024.X.X |
|---|---|---|
Number of electrodes per board |
64 |
16 (or 8) |
Number of roles (A, B, M or N) per board |
1 |
2 roles (or 4) |
Power supply |
12 V |
12V (or 5V) |