Campbell RainVUE10 topic

Introduction

The RainVUE10 is an SDI-12 tipping bucket rain gage in the RainVUE™ family of products. Advanced algorithms and digital processing within the sensor compensate for errors caused by high-intensity rain and provide accurate precipitation and intensity measurements.

The sensor is implemented as a sub-classes of the SDI12Sensors class. It requires a continuous 6 to 18 Vdc power supply. As backup, an internal 240 mAh lithium battery (3V Coin Cell CR2032) provides up to 15 days of continual operation after power loss. It draws < 80 µA when inactive and 1 mA while measuring.

Sensor Datasheet

The specifications and datasheet are available at https://www.campbellsci.com/rainvue10

Build flags

Sensor Constructor

Example Code

The Campbell RainVUE10 is used in the menu a la carte example.

Classes

class CampbellRainVUE10

The Sensor sub-class for the Campbell RainVUE10 precipitation sensor.

class CampbellRainVUE10_Precipitation

The Variable sub-class used for the precipitation output from a Campbell RainVUE10 precipitation sensor.

class CampbellRainVUE10_Tips

The Variable sub-class used for the tip count output from a Campbell RainVUE10 precipitation sensor.

class CampbellRainVUE10_RainRateAve

The Variable sub-class used for the average rainfall rate output from a Campbell RainVUE10 precipitation sensor.

class CampbellRainVUE10_RainRateMax

The Variable sub-class used for the maximum rainfall rate output from a Campbell RainVUE10 precipitation sensor.

Sensor Variable Counts

The number of variables that can be returned by RainVUE10

#define RAINVUE10_NUM_VARIABLES = 5

Sensor::_numReturnedValues; the RainVUE10 can report 5 values (although we only keep 4).

#define RAINVUE10_INC_CALC_VARIABLES = 0

Sensor::_incCalcValues; The RainVUE calculates averages and other stats on board, but we don't calculate any additional values.

Sensor Timing

The sensor timing for a Campbell RainVUE10

• Readings transferred from the tipping bucket to the logger are from past tips, so there is no need to wait for stability or measuring.

#define RAINVUE10_WARM_UP_TIME_MS = 100

Sensor::_warmUpTime_ms; the RainVUE10 warms up in >100ms.

#define RAINVUE10_STABILIZATION_TIME_MS = 0

Sensor::_stabilizationTime_ms; the RainVUE10 is stable as soon as it warms up (0ms stabilization).

#define RAINVUE10_MEASUREMENT_TIME_MS = 100

Sensor::_measurementTime_ms; the RainVUE10 takes >100ms to complete a measurement.

#define RAINVUE10_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 RainVUE requires no extra time.

Precipitation Accumulated Depth

The intensity-corrected accumulation variable from a Campbell RainVUE10 For the "-IN" Option (English units)

• Range is 0 to 1000 mm/h (0 to 40 in./h).
• Resolution is 0.254 mm (0.01 in.)
• Accuracy is ±1% at 0 to 500 mm/h intensity (0 to 19.7 in./h intensity) For the "-MM" Option (Metric units)
• Range is 0 to 500 mm/h (0 to 19.7 in./h)
• Resolution is 0.1 mm (0.004 in.)
• Accuracy is ±3% at 0 to 300 mm/h intensity (0 to 11.8 in./h intensity) ±5% at 300 to 500 mm/h intensity (11.8 to 19.7 in./h intensity)

#define RAINVUE10_PRECIPITATION_RESOLUTION = 2

Decimals places in string representation; depth should have 2 (resolution is 0.01 inches).

#define RAINVUE10_PRECIPITATION_VAR_NUM = 0

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

#define RAINVUE10_PRECIPITATION_VAR_NAME = "precipitation"

Variable name in ODM2 controlled vocabulary; "precipitation".

#define RAINVUE10_PRECIPITATION_UNIT_NAME = "inch"

Variable unit name in ODM2 controlled vocabulary; "inch" (in_i)

#define RAINVUE10_PRECIPITATION_DEFAULT_CODE = "RainVUEPrecipitation"

Default variable short code; "RainVUEPrecipitation".

Tip Count

Defines for tip count variable from a tipping bucket counter

• Range and accuracy depend on the tipping bucket used.

#define RAINVUE10_TIPS_RESOLUTION = 0

Decimals places in string representation; the number of tips should have 0 - resolution is 1 tip.

#define RAINVUE10_TIPS_VAR_NUM = 1

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

#define RAINVUE10_TIPS_VAR_NAME = "precipitation"

Variable name in ODM2 controlled vocabulary; "precipitation".

#define RAINVUE10_TIPS_UNIT_NAME = "event"

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

#define RAINVUE10_TIPS_DEFAULT_CODE = "RainVUETips"

Default variable short code; "RainVUETips".

Rainfall Rate Average

The average rainfall rate variable from a Campbell RainVUE10, defined as average precipitation intensity since last measurement. For the "-IN" Option (English units)

• Range is 0.01 to 1000 mm/h (0.0004 to 39.4 in./h)
• Resolution is 0.254 mm (0.01 in.)
• Accuracy is ±1% For the "-MM" Option (Metric units)
• Range is 0.01 to 500 mm/h (0.0004 to 19.7 in./h)
• Resolution is 0.1 mm (0.004 in.)
• Accuracy is ±3.5% at 0 to 300 mm/h (0 to 11.8 in./h) ±5% at 300 to 500 mm/h (11.8 to 19.7 in./h)

#define RAINVUE10_RAINRATEAVE_RESOLUTION = 2

Decimals places in string representation; the rainfall intensity has 2.

#define RAINVUE10_RAINRATEAVE_VAR_NUM = 3

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

#define RAINVUE10_RAINRATEAVE_VAR_NAME = "rainfallRate"

Variable name in ODM2 controlled vocabulary; "instrumentStatusCode".

#define RAINVUE10_RAINRATEAVE_UNIT_NAME = "inchPerHour"

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

#define RAINVUE10_RAINRATEAVE_DEFAULT_CODE = "RainVUERateAve"

Default variable short code; "RainVUERateAve".

Rainfall Rate Maximum

The maximum rainfall rate variable from a Campbell RainVUE10, defined as maximum precipitation intensity since last measurement.

• Range & Accuracy same as for sensor_rainvue_rainratemax {{ CampbellRainVUE10_RainRateMax::CampbellRainVUE10_RainRateMax }}

#define RAINVUE10_RAINRATEMAX_RESOLUTION = 2

Decimals places in string representation; the rainfall intensity has 2.

#define RAINVUE10_RAINRATEMAX_VAR_NUM = 4

Sensor variable number; average intensity is stored in sensorValues[4].

#define RAINVUE10_RAINRATEMAX_VAR_NAME = "rainfallRate"

Variable name in ODM2 controlled vocabulary; "instrumentStatusCode".

#define RAINVUE10_RAINRATEMAX_UNIT_NAME = "inchPerHour"

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

#define RAINVUE10_RAINRATEMAX_DEFAULT_CODE = "RainVUERateMax"

Default variable short code; "RainVUERateAve".

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