Electronic – arduino – Soft i2c with Sensirion SHT21 sensors on Arduino Mega

I have tried checking with an oscilloscope on the analogue pins when the sensor is plugged in and I don't seem to get anything as I normally would.

The hardware i2c channel works just fine on the mega, its the soft ones I am trying to use that don't seem to work

#include <Wire.h>
#include <Ports.h>
#include <PortsSHT21.h>
#include <SHT2x.h>

//Define soft i2c channels for 3 sensors
  SHT21 hsensor2 (2); // pins A1 and D5 - Sensor 2
  SHT21 hsensor3 (3); // pins A2 and D6 - Sensor 3
  SHT21 hsensor4 (4); // pins A3 and D7 - Sensor 4

//define variables for temp data
  float h, t;


void setup() 
{
    Wire.begin();
   Serial.begin(9600);
}

void loop()
{
   // Get data from first sensor hard I2C channel
    float hum1 = (SHT2x.GetHumidity());
    float temp1 = (SHT2x.GetTemperature());
    Serial.println("temp1");
    Serial.println(temp1); 

  // Get data from second sensor soft I2C
  hsensor2.measure(SHT21::HUMI);
  hsensor2.measure(SHT21::TEMP);
  hsensor2.calculate(h, t);
    float hum2 = (h);
    float temp2 = (t);
    Serial.println("temp2");
    Serial.println(temp2);     

   // Get data from third sensor soft I2C
  hsensor3.measure(SHT21::HUMI);
  hsensor3.measure(SHT21::TEMP);
  hsensor3.calculate(h, t);
    float hum3 = (h);
    float temp3 = (t);
    Serial.println("temp3");
    Serial.println(temp3);     

 // Get data from fourth sensor soft I2C  
  hsensor4.measure(SHT21::HUMI);
  hsensor4.measure(SHT21::TEMP);
  hsensor4.calculate(h, t);  
    float hum4 = (h);
    float temp4 = (t);
    Serial.println("temp4");
    Serial.println(temp4);
    Serial.println("");
    Serial.println("");
    delay(500);
}