Calibration

The wasserleser is calibrated during the initial setup process to ensure accurate water consumption measurements.

Initial Calibration

Calibration happens automatically during app setup when you:

1. Enter the requested values in the configuration screen
2. Confirm the blue LED indicator
3. Complete the device setup

What Gets Calibrated

During calibration, the wasserleser:

• Detects pulse rate: Measures how many rotations equal one liter
• Establishes baseline: Sets the reference point for measurements
• Validates sensor position: Confirms the sensor can detect the rotating metal disc
• Synchronizes readings: Aligns app readings with your physical meter

Calibration Values

You'll be asked to provide:

• Current meter reading: The exact reading from your physical water meter
• Meter type/size: Specifications of your water meter (if applicable)
• Pulse rate: Rotations per liter (usually pre-configured based on meter type)

See Initial Reading for detailed instructions on entering these values.

Verifying Calibration

After calibration, verify accuracy by:

1. Noting your physical meter reading
2. Using a known amount of water (e.g., fill a 10-liter bucket)
3. Checking the app reading increased by approximately 10 liters
4. Comparing the app reading to your physical meter after 24 hours

When to Recalibrate

You may need to recalibrate if:

• Readings become inaccurate over time
• The device was powered off for extended periods
• The wasserleser was physically moved or repositioned
• After performing a factory reset

See Recalibration for detailed instructions.

Calibration Accuracy

The wasserleser typically achieves:

• ±2-3% accuracy for typical household water consumption
• Higher accuracy for steady flow rates
• Slight variations during very low flow (dripping taps)

Troubleshooting Calibration Issues

Readings seem incorrect:

• Verify sensor is positioned exactly over the metal disc
• Check that the metal disc rotates freely
• Ensure the initial meter reading was entered correctly
• See Recalibration

No readings at all:

• Confirm the sensor is properly positioned
• Check power connection
• Verify WiFi connectivity
• See LED Indicators for factory reset if issues persist

Readings drift over time:

• Minor drift is normal and can be corrected by updating the initial reading
• Large drift may indicate sensor positioning issues
• Consider recalibrating the device

Fine-Tuning Accuracy

For optimal accuracy:

1. Ensure stable mounting (no vibration or movement)
2. Keep the sensor surface clean
3. Verify the metal disc rotates smoothly
4. Periodically compare app readings to physical meter
5. Update initial reading if drift is detected