Yosemitech Y520 Conductivity Sensor module

Sensor Datasheet

• Manual
• Modbus Instructions

Sensor Constructor

Example Code

The Yosemitech Y520 conductivity sensor is used in the menu a la carte example.

#include <sensors/YosemitechY520.h>

// NOTE: Extra hardware and software serial ports are created in the "Settings
// for Additional Serial Ports" section

// NOTE: Use -1 for any pins that don't apply or aren't being used.
byte          y520ModbusAddress  = 0x20;  // The modbus address of the Y520
const int8_t  y520AdapterPower   = sensorPowerPin;  // RS485 adapter power pin
const int8_t  y520SensorPower    = A3;              // Sensor power pin
const int8_t  y520EnablePin      = -1;              // Adapter RE/DE pin
const uint8_t y520NumberReadings = 5;
// The manufacturer recommends averaging 10 readings, but we take 5 to minimize
// power consumption

// Create a Y520 conductivity sensor object
YosemitechY520 y520(y520ModbusAddress, modbusSerial, y520AdapterPower,
                    y520SensorPower, y520EnablePin, y520NumberReadings);

// Create specific conductance and temperature variable pointers for the Y520
Variable* y520Cond =
    new YosemitechY520_Cond(&y520, "12345678-abcd-1234-ef00-1234567890ab");
Variable* y520Temp =
    new YosemitechY520_Temp(&y520, "12345678-abcd-1234-ef00-1234567890ab");

Classes

class YosemitechY520

The Sensor sub-class for the Yosemitech Y520-A 4-electrode conductivity sensor.

class YosemitechY520_Cond

The Variable sub-class used for the conductivity output from a Yosemitech Y520-A 4-electrode conductivity sensor.

class YosemitechY520_Temp

The Variable sub-class used for the temperature output from a Yosemitech Y520-A 4-electrode conductivity sensor.

Defines

#define Y520_NUM_VARIABLES = 2

Sensor::_numReturnedValues; the Y520 can report 2 values.

#define Y520_INC_CALC_VARIABLES = 0

Sensor::_incCalcValues; we don't calculate any additional values.

Sensor Timing

The sensor timing for a Yosemitch Y520

#define Y520_WARM_UP_TIME_MS = 1600

Sensor::_warmUpTime_ms; time before sensor responds after power - 1600 ms.

#define Y520_STABILIZATION_TIME_MS = 10000

Sensor::_stabilizationTime_ms; time between "StartMeasurement" command and stable reading - 10sec (10,000ms).

#define Y520_MEASUREMENT_TIME_MS = 2700

Sensor::_measurementTime_ms; the Y520 takes ~2700ms to complete a measurement.

Conductivity

The conductivity variable from a Yosemitch Y520

• Range is 1 µS/cm to 200 mS/cm
• Accuracy is ± 1 % Full Scale

#define Y520_COND_RESOLUTION = 1

Decimals places in string representation; conductivity should have 1.

• resolution is 0.1 µS/cm.

#define Y520_COND_VAR_NUM = 0

Sensor variable number; conductivity is stored in sensorValues[0].

#define Y520_COND_VAR_NAME = "specificConductance"

Variable name in ODM2 controlled vocabulary; "specificConductance".

#define Y520_COND_UNIT_NAME = "microsiemenPerCentimeter"

Variable unit name in ODM2 controlled vocabulary; "microsiemenPerCentimeter" (µS/cm)

#define Y520_COND_DEFAULT_CODE = "Y520Cond"

Default variable short code; "Y520Cond".

Temperature

The temperature variable from a Yosemitch Y520

• Range is 0°C to + 50°C
• Accuracy is ± 0.2°C

#define Y520_TEMP_RESOLUTION = 1

Decimals places in string representation; temperature should have 1 - resolution is 0.1°C.

#define Y520_TEMP_VAR_NUM = 1

Sensor variable number; temperature is stored in sensorValues[1].

#define Y520_TEMP_VAR_NAME = "temperature"

Variable name in ODM2 controlled vocabulary; "temperature".

#define Y520_TEMP_UNIT_NAME = "degreeCelsius"

Variable unit name in ODM2 controlled vocabulary; "degreeCelsius" (°C)

#define Y520_TEMP_DEFAULT_CODE = "Y520Temp"

Default variable short code; "Y520Temp".