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

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.

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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. 

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