VEGAPULS C 21 topic

Introduction

VEGAPULS C 21 is the ideal sensor for non-contact level measurement in simple applications where a high degree of protection is required. It is particularly suitable for use in water treatment, pumping stations and rain overflow basins, for flow measurement in open channels and level monitoring. In bulk solids the sensors are used in small bulk solids silos or open containers.

The sensor is implemented as a sub-classes of the SDI12Sensors class. It requires a 8 to 30 Vdc power supply, which can be turned off between measurements. It pulls 25 mW in low-power mode and 100 mW in standard mode.

Sensor Datasheet

The specifications and datasheet are available at https://www.vega.com/api/sitecore/DocumentDownload/Handler?documentContainerId=1006748&languageId=2&fileExtension=pdf&softwareVersion=&documentGroupId=58354&version=03-04-2023

Build flags

Sensor Constructor

Example Code

The VEGAPULS C 21 is used in the menu a la carte example.

Classes

class VegaPuls21

The Sensor sub-class for the VEGAPULS C 21 radar level sensor.

class VegaPuls21_Stage

The Variable sub-class used for the temperature output from a VEGAPULS C 21 radar level sensor.

class VegaPuls21_Distance

The Variable sub-class used for the temperature output from a VEGAPULS C 21 radar level sensor.

class VegaPuls21_Temp

The Variable sub-class used for the temperature output from a VEGAPULS C 21 radar level sensor.

class VegaPuls21_Reliability

The Variable sub-class used for the reliability output from a VEGAPULS C 21 radar level sensor.

class VegaPuls21_ErrorCode

The Variable sub-class used for the error code output from a VEGAPULS C 21 radar level sensor.

Sensor Variable Counts

The number of variables that can be returned by the VEGA PULS 21

#define VEGAPULS21_NUM_VARIABLES = 5

Sensor::_numReturnedValues; the VEGA PULS 21 can report 5 values.

#define VEGAPULS21_INC_CALC_VARIABLES = 0

Sensor::_incCalcValues;.

Sensor Timing

The sensor timing for a VEGAPULS C 21

#define VEGAPULS21_WARM_UP_TIME_MS = 5200

Sensor::_warmUpTime_ms; the VEGA PULS 21 warms up in ~5200ms.

#define VEGAPULS21_STABILIZATION_TIME_MS = 0

Sensor::_stabilizationTime_ms; the VEGA PULS 21 is stable as soon as it warms up (0ms stabilization).

#define VEGAPULS21_MEASUREMENT_TIME_MS = 6050

Sensor::_measurementTime_ms; the VEGA PULS 21 takes ~6000ms to complete a measurement.

#define VEGAPULS21_EXTRA_WAKE_TIME_MS = 0

Extra wake time required for an SDI-12 sensor between the "break" and the time the command is sent. The VEGA PULS 21 requires no extra time.

Stage

The stage variable from a VEGAPULS C 21

• Accuracy is ≤ 2 mm (meas. distance > 0.25 m/0.8202 ft)

#define VEGAPULS21_STAGE_RESOLUTION = 3

Decimals places in string representation; stage in meters should have 3 - resolution is 1mm.

#define VEGAPULS21_STAGE_VAR_NUM = 0

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

#define VEGAPULS21_STAGE_VAR_NAME = "gageHeight"

Variable name in ODM2 controlled vocabulary; "gageHeight".

#define VEGAPULS21_STAGE_UNIT_NAME = "meter"

Variable unit name in ODM2 controlled vocabulary; "meter" (m)

#define VEGAPULS21_STAGE_DEFAULT_CODE = "VegaPulsStage"

Default variable short code; "VegaPulsStage".

Distance

The distance variable from a VEGAPULS C 21

• Accuracy is ≤ 2 mm (meas. distance > 0.25 m/0.8202 ft)

#define VEGAPULS21_DISTANCE_RESOLUTION = 3

Decimals places in string representation; distance in meters should have 3 - resolution is 1mm.

#define VEGAPULS21_DISTANCE_VAR_NUM = 1

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

#define VEGAPULS21_DISTANCE_VAR_NAME = "distance"

Variable name in ODM2 controlled vocabulary; "distance".

#define VEGAPULS21_DISTANCE_UNIT_NAME = "meter"

Variable unit name in ODM2 controlled vocabulary; "meter" (m)

#define VEGAPULS21_DISTANCE_DEFAULT_CODE = "VegaPulsDistance"

Default variable short code; "VegaPulsDistance".

Temperature

The temperature variable from a VEGAPULS C 21

#define VEGAPULS21_TEMP_RESOLUTION = 1

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

#define VEGAPULS21_TEMP_VAR_NUM = 2

Sensor variable number; temperature is stored in sensorValues[2].

#define VEGAPULS21_TEMP_VAR_NAME = "temperature"

Variable name in ODM2 controlled vocabulary; "temperature".

#define VEGAPULS21_TEMP_UNIT_NAME = "degreeCelsius"

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

#define VEGAPULS21_TEMP_DEFAULT_CODE = "VegaPulsTemp"

Default variable short code; "VegaPulsTemp".

Reliability

The reliability variable from a VEGAPULS C 21

#define VEGAPULS21_RELIABILITY_RESOLUTION = 1

Decimals places in string representation; reliability should have 1 (resolution is 0.1 dB).

#define VEGAPULS21_RELIABILITY_VAR_NUM = 3

Sensor variable number; reliability is stored in sensorValues[3].

#define VEGAPULS21_RELIABILITY_VAR_NAME = "reliability"

Variable name in ODM2 controlled vocabulary; "reliability".

#define VEGAPULS21_RELIABILITY_UNIT_NAME = "decibel"

Variable unit name in ODM2 controlled vocabulary; "decibel" (dB)

#define VEGAPULS21_RELIABILITY_DEFAULT_CODE = "VegaPulsReliability"

Default variable short code; "VegaPulsReliability".

Error Code

The error code variable from a VEGAPULS C 21

• Significance of error code values is unknown.

#define VEGAPULS21_ERRORCODE_RESOLUTION = 0

Decimals places in string representation; the error code has 0.

#define VEGAPULS21_ERRORCODE_VAR_NUM = 4

Sensor variable number; error code is stored in sensorValues[4].

#define VEGAPULS21_ERRORCODE_VAR_NAME = "instrumentStatusCode"

Variable name in ODM2 controlled vocabulary; "instrumentStatusCode".

#define VEGAPULS21_ERRORCODE_UNIT_NAME = "dimensionless"

Variable unit name in ODM2 controlled vocabulary; "dimensionless".

#define VEGAPULS21_ERRORCODE_DEFAULT_CODE = "VegaPulsError"

Default variable short code; "VegaPulsError".

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