• TrolMaster PCT-3 Inline EC & Temp Sensor | Nutrient Conductivity Probe for Aqua-X & Tent-X
  • TrolMaster PCT-3 Inline EC & Temp Sensor | Nutrient Conductivity Probe for Aqua-X & Tent-X
  • TrolMaster PCT-3 Inline EC & Temp Sensor | Nutrient Conductivity Probe for Aqua-X & Tent-X
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TrolMaster PCT-3 Inline EC & Temp Sensor | Nutrient Conductivity Probe for Aqua-X & Tent-X

£209.95
£209.95
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Maintain surgical precision over your nutrient strength with the TrolMaster PCT-3 Heavy-Duty EC and Temperature Probe. Engineered for high-performance irrigation systems, the PCT-3 provides real-time, dual-parameter monitoring of both Electrical Conductivity (EC) and water temperature.
Unlike standard sensors, the PCT-3 features a revamped, compact design specifically built for inline installation. Its threaded body allows for a seamless, leak-proof fit into standard 3/4" PVC tee fittings, making it the perfect choice for recirculating hydroponic systems, fertigation skids, and commercial nutrient reservoirs.
Engineering Upgrades for Professional Growers
TrolMaster has redesigned the PCT-3 to solve the common pain points of reservoir management:
  • Streamlined Form Factor: A reduced diameter protective sleeve and shorter probe length allow it to fit into tight plumbing manifolds and small reservoirs where other probes fail.
  • Enhanced Stability: Featuring an improved sensor element, the PCT-3 delivers more consistent, "drift-free" readings, ensuring your nutrient dosing is always accurate.
  • Inline or Drop-in Versatility: Whether you need a submerged probe for a tank or a pressurized inline sensor for a feed line, the PCT-3 is built to handle both applications with ease.
System Compatibility
The PCT-3 uses a Mini DIN terminal for a secure, noise-free connection to your TrolMaster ecosystem via the AMP-2 or AMP-3 sensor boards. It is fully compatible with:
  • Aqua-X Series: (NFS-1, NFS-2, NFS-3)
  • Tent-X: (TCS-1)
  • Green-X: (GCS-1)
Key Technical Specifications
  • Cable Length: 3.6 Meters (11.8ft) for maximum reach.
  • Fitting Requirement: Compatible with standard 3/4" PVC Tee fittings.
  • Operating Range: Temperature 32-122°F | Humidity <90%.
  • Applications: Hydroponics, Aquaponics, Laboratory Testing, and Aquariums.
Maximize your plant potential. The TrolMaster PCT-3 ensures your nutrient solution is always within the "goldilocks zone" for maximum uptake and explosive growth.
Pro Maintenance for Maximum Accuracy
To ensure the longest lifespan and most reliable data from your PCT-3 and PPH-1 sensors, follow these industry best practices:
  • Never Store Dry: pH probes must stay hydrated. Always use the storage cap filled with KCl storage solution—never RO or distilled water, which can damage the sensor's reference gel.
  • Monthly Cleaning: Prevent "sensor drift" by removing mineral scale and biofilm. Soak tips in a mild probe cleaner and gently brush EC pins with a soft tool. Never touch the pH glass bulb with your fingers.
  • Eliminate Signal Interference: Keep sensor cables away from high-voltage power lines for LEDs or pumps. Crossing cables at 90-degree angles prevents electrical "noise" from causing jumping readings.
  • Precision Calibration: Calibrate every 2–4 weeks using fresh buffer solutions. Always pour a small amount into a separate container to avoid contaminating your main supply.
  • Thermal Equilibrium: Allow sensors to sit in the reservoir for 5–10 minutes before calibrating to ensure the temperature compensation (ATC) is fully acclimated to the water.
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Monitor Your Nutrient Solution with Confidence

Whether you're growing vegetables, herbs or ornamental plants, maintaining the correct nutrient strength and water temperature is essential for healthy growth. The TrolMaster PCT-3 provides accurate EC and temperature monitoring in one compact sensor, helping you make informed adjustments and maintain a more consistent growing environment.

Designed for use with compatible TrolMaster control systems, the PCT-3 can be installed in-line or placed directly into your irrigation system, making it a practical choice for hydroponics, indoor gardens and automated growing environments.

Shop Temp Sensor here

Frequently Asked Questions

The PCT-3 accurately measures both electrical conductivity (EC) and nutrient solution temperature, helping you monitor your irrigation water and maintain consistent growing conditions.

The PCT-3 works with TrolMaster AMP-2 and AMP-3 sensor modules, making it compatible with supported Aqua-X, Green-X and Tent-X systems. Always check your controller and sensor board compatibility before installation.

Yes. The PCT-3 is designed for both in-line and drop-in installation. Its threaded body fits standard 3/4-inch PVC tee fittings, making installation quick and straightforward in many irrigation systems.

Monitoring EC helps you keep nutrient levels consistent, while tracking water temperature can support healthier root development and a more stable growing environment. Together, these readings make it easier to manage your irrigation system effectively.

For the most accurate readings, keep the sensor clean and free from residue. Following the manufacturer's cleaning and maintenance recommendations will help ensure reliable long-term performance.

Absolutely. The PCT-3 is ideal for hydroponic systems, indoor gardens, research environments and other applications where accurate EC and water temperature monitoring is important.

The sensor includes a 3.6 metre cable, giving you flexibility when positioning it within reservoirs or irrigation pipework.

Yes. Its robust construction, improved sensing element and compatibility with TrolMaster's irrigation systems make it suitable for both hobby growers and commercial installations.