Keller Acculevel module

Sensor Datasheet

• Manual
• Datasheet

Sensor Constructor

Example Code

The Keller Acculevel is used in the menu a la carte example.

#include <sensors/KellerAcculevel.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 acculevelModbusAddress  = 0x01;  // The modbus address of KellerAcculevel
const int8_t  acculevelPower = A3;    // Acculevel Sensor power pin
const int8_t  alAdapterPower = sensorPowerPin;  // RS485 adapter power pin
const int8_t  al485EnablePin = -1;              // Adapter RE/DE pin
const uint8_t acculevelNumberReadings = 5;
// The manufacturer recommends taking and averaging a few readings

// Create a Keller Acculevel sensor object
KellerAcculevel acculevel(acculevelModbusAddress, modbusSerial, alAdapterPower,
                          acculevelPower, al485EnablePin,
                          acculevelNumberReadings);

// Create pressure, temperature, and height variable pointers for the Acculevel
Variable* acculevPress = new KellerAcculevel_Pressure(
    &acculevel, "12345678-abcd-1234-ef00-1234567890ab");
Variable* acculevTemp = new KellerAcculevel_Temp(
    &acculevel, "12345678-abcd-1234-ef00-1234567890ab");
Variable* acculevHeight = new KellerAcculevel_Height(
    &acculevel, "12345678-abcd-1234-ef00-1234567890ab");

Classes

class KellerAcculevel

The Sensor sub-class for the Keller Acculevel sensor.

class KellerAcculevel_Pressure

The Variable sub-class used for the gauge pressure (vented and barometric pressure corrected) output from a Keller Acculevel.

class KellerAcculevel_Temp

The Variable sub-class used for the temperature output from a Keller Acculevel.

class KellerAcculevel_Height

The Variable sub-class used for the gauge height (water level with regard to an arbitrary gage datum) output from a Keller Acculevel.

Sensor Timing

The sensor timing for a Keller Acculevel

#define ACCULEVEL_WARM_UP_TIME_MS = 500

Sensor::_warmUpTime_ms; the Acculevel takes about 500 ms to respond.

#define ACCULEVEL_STABILIZATION_TIME_MS = 5000

Sensor::_stabilizationTime_ms; the Acculevel is stable after about 5s (5000ms).

#define ACCULEVEL_MEASUREMENT_TIME_MS = 1500

Sensor::_measurementTime_ms; the Acculevel takes 1500ms to complete a measurement.

Pressure

The pressure variable from a Keller Acculevel

• Range is 0 to 11 bar
• Accuracy is Standard ±0.1% FS, Optional ±0.05% FS

#define ACCULEVEL_PRESSURE_RESOLUTION = 5

Decimals places in string representation; pressure should have 5 - resolution is 0.002%.

#define ACCULEVEL_PRESSURE_DEFAULT_CODE = "kellerAccuPress"

Default variable short code; "kellerAccuPress".

Temperature

The temperature variable from a Keller Acculevel

• Range is -10°C to 60°C
• Accuracy is not specified in the sensor datasheet

#define ACCULEVEL_TEMP_RESOLUTION = 2

Decimals places in string representation; temperature should have 2 - resolution is 0.01°C.

#define ACCULEVEL_TEMP_DEFAULT_CODE = "kellerAccuTemp"

Default variable short code; "kellerAccuTemp".

Height

The height variable from a Keller Acculevel

• Range is 0 to 900 feet
• Accuracy is Standard ±0.1% FS, Optional ±0.05% FS

#define ACCULEVEL_HEIGHT_RESOLUTION = 4

Decimals places in string representation; height should have 4 - resolution is 0.002%.

#define ACCULEVEL_HEIGHT_DEFAULT_CODE = "kellerAccuHeight"

Default variable short code; "kellerAccuHeight".