Indo Analogue_In does not work with our sensor

Hi,
We have an issue when reading values from our vibration sensor, we are using a transformer to pass 24V to the sensor, when we put our sensor on CH1 and use Industrino INDO library example Analogue_In it gives us ‘read failed’ error with constant value of 35.050 mA_p that displays without the sensor and if we test with use Industrino INDO library example Indio_Analogue Calibration it also gives us ‘read failed’ error with measured 2047 (raw). Below is a sample of our code:
#include <Indio.h>
#include <Wire.h>
float sensorVal1;
void setup()
{  
  Serial.begin(9600);
   while (!Serial)
   {
     // wait for serial port to connect. Needed for Leonardo only
   }
  Indio.setADCResolution(18); // Set the ADC resolution to 18bit@3.75SPS.
  Indio.analogReadMode(1, mA_p); // Set Analog-In CH4 to % mA mode (4-20mA -> 0-100%)
 
 }
void loop()
{
  sensorVal1=Indio.analogRead(1); //Read Analog-In CH1 (output depending on selected mode)
  Serial.print("CH1: "); //Print "CH" for human readability
  Serial.print(sensorVal1, 3); //Print data in 3 decimal places
  Serial.print("  "); //Add some "  " space
  Serial.print("\r\n"); // Print a new line to serial.
}

We are powering the sensor from 24V transformer and also the INDIO from the same. Connecting the 2 grounds make no difference.
Please assist us with the solution, thank you.

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Lorenzo Boncompagni

Lorenzo Boncompagni

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| 2 1 2

Asked on 1/19/17, 7:28 AM

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Please give brand and model of sensor. ​Also check your analog is not faulty by reading in other modes.

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Stefano Giuseppe Bonvini

on 1/20/17, 10:40 AM

The same sensor works in another arduino environment with 4-20 ma input. We tried all modes in Indio but nothing. I can send you specs on Monday. Thanks.

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Lorenzo Boncompagni

on 1/21/17, 9:43 AM

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