How to Use Pressure Gauge Reading

Configuration (one-time setup)

In the Panel Reader, expand ⚙️ Configuration:

1. API key - the same one used for leaf analysis (Roboflow)
2. Detection model - choose:
   • ⭐ Analog Gauge Meter v11 - recommended for pressure gauges
3. Gauge scale:
   • Min/Max value: e.g. 0 and 6 (bar)
   • Angles: the default 225°-315° works for most gauges

Reading a pressure gauge

1. Select the Device type: e.g. “PetNat pressure gauge”
2. Upload a photo of the gauge
3. Click Analyze panel

Result:

📊 Readings:
Gauge reading: 2.35 bar (confidence: 51%)

🔧 Debug:
  Needle angle: 267.5°
  Position on scale: 47.2%
  Tip used: ✓ Yes (more accurate)

Correction and model training

If the reading is incorrect:

1. Expand 📊 Save to training dataset
2. Enter the actual value (e.g. 2.5)
3. Choose the unit (bar)
4. Click 💾 Save

This data helps train a better model over time.

Scale calibration

If readings are consistently off:

1. Take a photo of the gauge at its minimum (0)
2. Note the angle from the debug output (e.g. 225°)
3. Take a photo at its maximum
4. Note the angle (e.g. 315°)
5. Enter these angles in the configuration

Tips

• Take the photo straight on (not at an angle)
• Use good lighting (no glare on the glass)
• The analog-gauge-meter/11 model detects the Gauge Head (tip) - more accurate than the center of the needle