How to Convert Liquid pH Detection Sensor Module output to pH scale using NI LABVIEW and NI ELVIS II

[Abhishek_Haith]

Hello,

I'm trying to measure pH of liquid using NI LABVIEW and NI ELVIS II. I'm using Liquid pH Detection Sensor Module with pH Electrode Probe (https://hacktronics.co.in/ph-sensor/liquid-ph-detection-sensor-module-with-ph-electrode-probe-for-aq...).

Please help me to convert the sensor module output to corresponding pH scale.

Thank you.

[Alexander_Sobolev]

Its documentation should have Voltage to pH conversion rule. Most probably you can setup a scale in Elvis configuration - enter the provided coefficients into correct scale type (linear, polynomial, table, etc).

Otherwise you need to calibrate it manually - assume scale type, have several standards (fixed pH), measure their voltages and figure out coefficients.