AnalogElecConductivity.h file
Encapsulates an Electrical Conductivity sensors using an anlog input and onboard ADC and ADC ref.
- Reference
-
Detailed Descriptions
Classes
- class AnalogElecConductivity
- Class for the analog Electrical Conductivity monitor.
- class AnalogElecConductivity_EC
- The variable class used for electricalConductivity measured using an analog pin connected to electrodes submerged in the medium.
Defines
- #define ANALOGELECCONDUCTIVITY_NUM_VARIABLES = 1
- Sensor::
_numReturnedValues; we only get one value from the analog conductivity sensor. - #define ANALOGELECCONDUCTIVITY_INC_CALC_VARIABLES = 0
- Sensor::
_incCalcValues; we don't calculate any additional values - though we recommend users include a temperature sensor and calculate specific conductance in their own program. - #define ANALOG_EC_ADC_RESOLUTION = 10
- Default resolution (in bits) of the voltage measurement.
- #define ANALOG_EC_ADC_MAX = ((1 <<
- The maximum possible value of the ADC - one less than the resolution shifted up one bit.
- #define ANALOG_EC_ADC_RANGE = (1 <<
- The maximum possible range of the ADC - the resolution shifted up one bit.
- #define ANALOG_EC_ADC_REFERENCE_MODE = DEFAULT
- The voltage reference mode for the processor's ADC.
- #define ANALOG_EC_ADC_REFERENCE_MODE = AR_DEFAULT
- The voltage reference mode for the processor's ADC.
- #define RSERIES_OHMS_DEF = 499
- The default resistance (in ohms) of the measuring resistor. This should not be less than 300 ohms when measuring EC in water.
- #define SENSOREC_KONST_DEF = 1.0
- Cell Constant For EC Measurements.
Sensor Timing
The timing for analog conductivity via resistance.
- #define ANALOGELECCONDUCTIVITY_WARM_UP_TIME_MS = 2
- Sensor::
_warmUpTime_ms; giving 2ms for warm-up. - #define ANALOGELECCONDUCTIVITY_STABILIZATION_TIME_MS = 1
- Sensor::
_stabilizationTime_ms; we give just a tiny delay for stabilization. - #define ANALOGELECCONDUCTIVITY_MEASUREMENT_TIME_MS = 0
- Sensor::
_measurementTime_ms; we assume the analog voltage is measured instantly.
Electrical Conductance
The humidity variable from an AOSong DHT
- Range: low 100's when open air, for short circuit: a high number
- Accuracy: needs determining for each combination of ADC. ADC_REF, and series R. its designed as a very simple relative EC measurement
Construct a new AnalogElecConductivity_
AnalogElecConductivity_EC(AnalogElecConductivity* parentSense,
const char* uuid = "",
const char* varCode = ANALOGELECCONDUCTIVITY_
Parameters
parentSense
The parent AnalogElecConductivity providing the result values.
uuid
A universally unique identifier (UUID or GUID) for the variable; optional with the default value of an empty string.
varCode
A short code to help identify the variable in files; optional with a default value of "anlgEc".
- #define ANALOGELECCONDUCTIVITY_EC_RESOLUTION = 1
- Decimals places in string representation; EC should have 1.
- #define ANALOGELECCONDUCTIVITY_EC_VAR_NUM = 0
- Sensor vensor variable number; EC is stored in sensorValues[0].
- #define ANALOGELECCONDUCTIVITY_EC_VAR_NAME = "electricalConductivity"
- Variable name in ODM2 controlled vocabulary; "electricalConductivity".
- #define ANALOGELECCONDUCTIVITY_EC_UNIT_NAME = "microsiemenPerCentimeter"
- Variable unit name in ODM2 controlled vocabulary; "microsiemenPerCentimeter" (µS/cm)
- #define ANALOGELECCONDUCTIVITY_EC_DEFAULT_CODE = "anlgEc"
- Default variable short code; "anlgEc".