PH & TDS METER TECHNICAL TCE

Technical Data Sheet –  PH & TDS Meter

1. Product Description

A rugged, waterproof handheld meter equipped with a combined probe for measuring pH, electrical conductivity (EC/TDS), and temperature—ideal for testing irrigation water, hydroponics solutions, and environmental samples.

2. Technical Specifications

📌 pH Measurement

  • Range: –2.00 to +16.00 pH

  • Resolution: 0.01 pH

  • Accuracy: ±0.02 pH (±0.1 pH for less precise models)Calibration: 1–2 point auto calibration; commonly uses standard buffer solutions (pH 4.01 / 7.01 / 10.01 or 4.01 / 6.86 / 9.18) 

📌 EC (Conductivity) & TDS Measurement

  • EC Range: 0 to 3999 μS/cm (or up to 20 mS/cm for high-range devices)  

  • EC Resolution: 1 μS/cm or 0.01 mS/cm 

  • EC Accuracy: ±2% full scale 

  • TDS Range: 0 to 2000 ppm (or up to 10 ppt in high-range meters) 

  • TDS Resolution: 1 ppm or 0.01 ppt 

  • TDS Accuracy: ±2% full scale 5

  • Conversion Factor (EC→TDS): Selectable between 0.45–1.00 or fixed 0.5/0.7 

📌 Temperature Measurement

  • Range: –5.0 to +105.0 °C (–22 to 221 °F) 

  • Resolution: 0.1 °C

  • Accuracy: ±0.5 °C  

  • Temperature Compensation: Automatic for pH and EC/TDS readings 

3. Probe & Meter Features

  • Combined Three-in-One Probe: Measures pH, conductivity/TDS, and temperature; pre-amplified to reduce electrical noise 

  • Waterproof Rating: IP67, suitable for humid and field conditions 

  • Display: Backlit LCD, includes stable reading indicator and HOLD/watermark signals k+3

4. Power & Physical Details

  • Battery: 3×AAA (standard models); runtime approx. 600 hours

  • Auto-Off Options: Set to 8 min, 60 min, or disabled to save power 

  • Physical Dimensions: ~154 × 63 × 30 mm; Weight: ~196 g (6.9 oz) 

5. Calibration & Diagnostics

  • Automatic calibration for pH (1–2 points) and EC/TDS (1-point) 

  • Probe diagnostics: electrode health check, last calibration timestamp 

6. Applications

  • Monitoring irrigation water (pH balance, salinity levels)

  • Hydroponics, aquaponics, greenhouse water testing

  • Environmental and educational water quality analysis

7. Usage Recommendations

  • Rinse probe after each use; store pH sensor in storage solution

  • Calibrate regularly using appropriate buffer/standard solutions

  • Avoid exposure to extreme temperatures or shocks

  • Check batteries and seals for waterproof integrity

✅ Why It’s Valuable

  • Combines multiple key measurements in one portable unit

  • High accuracy and reliable auto-temperature compensation

  • Rugged design suitable for field environments

  • Long battery life with power-saving features