Problem mit INA3221

#include <Wire.h>

#include <Beastdevices_INA3221.h>

#include <SoftwareSerial.h>

#define shunt 100

double volt_B0, volt_B1, volt_B2;

Beastdevices_INA3221 ina_B(INA3221_ADDR41_VCC);

void setup()

{

  Serial.begin(9600);

  ina_B.begin(); ina_B.reset();

  ina_B.setShuntRes(shunt, shunt, shunt);

  ina_B.setFilterRes(10, 10, 10);

  ina_B.setShuntMeasEnable();

  ina_B.setBusMeasEnable();

}

void loop()

{

    volt_B0 = ina_B.getVoltage(INA3221_CH1);

    volt_B1 = ina_B.getVoltage(INA3221_CH2);

    volt_B2 = ina_B.getVoltage(INA3221_CH3);      

    Serial.print(volt_B0); Serial.print("\t");

    Serial.print(volt_B1); Serial.print("\t");

    Serial.print(volt_B2); Serial.print("\t");

    Serial.println();

    delay(200);

}