- 1 × Inline EC & Temperature Sensor (PCT-2)
TrolMaster PCT-2 Inline & Reservoir EC & Temperature Sensor
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/mo.
- Monitors EC and temperature with a 12 foot reach into lines or tanks
- Mini DIN terminal connects directly to AMP 2 boards for a clean signal path
- Compatible with TrolMaster Aqua X, Green X, and Tent X control systems
- 3-year warranty on all mechanical and electronic components
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Who This Is For
- You are moving to inline EC monitoring because your current reservoir-only setup misses spikes in the feed lines.
- You are installing a dual-use probe because you need the option to swap between tank and pipe without buying new gear.
- You are wiring into an AMP-2 board because you want live nutrient data feeding directly into your central controller.
What We Found
- We like this model because it lets you switch from reservoir to inline monitoring without buying a whole new sensor.
- The 12 foot cable gives you enough slack to reach a central controller even in larger multi tent configurations.
- The Mini DIN plug is much more secure than those flimsy barrel connectors that tend to wiggle loose during cleaning.
What Users Say
- Growers using the inline setup say they finally stopped guessing what the nutrient mix looks like inside the pipes.
- Users who moved to live tracking report catching chiller failures immediately instead of discovering warm water later.
TrolMaster PCT-2 Inline & Reservoir EC & Temperature Sensor
The TrolMaster PCT-2 is a dual-use EC and temperature probe that monitors nutrient concentration and water temperature either inline within an existing PVC piping system or as a drop-in in a reservoir — giving you more installation flexibility than a reservoir-only probe without requiring a full replumb. It connects directly to the AMP-2 sensor board via Mini DIN terminal, feeding live EC and temperature readings to your TrolMaster controller for real-time monitoring across your irrigation or nutrient delivery system. A 3.6-meter cable provides flexible positioning in either configuration.
For setups requiring installation into standard ¾" PVC tee fittings or compatibility with the AMP-3 sensor board, we recommend the TrolMaster PCT-3.
Compatibility: TrolMaster Aqua-X (NFS-1 via AMP-2), Green-X (GCS-1 via AMP-2), and Tent-X (TCS-1 via AMP-2)
What's Included
Features
⚗️
Inline & Reservoir EC & Temp Monitoring
Dual-use probe supports both inline PVC piping installation and reservoir drop-in use — track EC and temperature where it matters most without additional hardware.
🔌
Mini DIN Direct Connection
Mini DIN terminal connects directly to the AMP-2 sensor board — no additional adapters or converters required for a clean, secure signal path to the controller.
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Wide Application Range
Suitable for hydroponics, aquariums, laboratories, and any environment requiring consistent EC and temperature monitoring. 3.6m cable for flexible placement.
TrolMaster PCT-2 Specifications
| Specification | Value |
|---|---|
| Measurement Parameters | EC (Electrical Conductivity) & Water Temperature |
| Cable Length | 3.6 meters (~12 ft) |
| Connector Type | Mini DIN |
| Installation Type | Inline (PVC piping) or Drop-in reservoir |
| Compatible Sensor Board | AMP-2 |
| Working Environment | Temperature 32–122°F (0–50°C), Humidity ≤90% |
| Package Dimensions | 275mm (L) × 87mm (W) × 94mm (H) |
| Compatibility | TrolMaster Aqua-X (via AMP-2), Green-X (via AMP-2), Tent-X (via AMP-2) |
Support & Manuals
Warranty
TrolMaster backs the PCT-2 with a 3-year warranty from the original date of purchase, covering all mechanical and electronic components under normal operating conditions. Components that fail due to abnormal or improper usage are excluded from this coverage.
FAQs
What does the PCT-2 measure?
The PCT-2 measures electrical conductivity (EC) and water temperature — either inline within a PVC piping system or submerged in a reservoir. When connected to an AMP-2 sensor board, both readings are passed to the TrolMaster controller and displayed on the sensor board's LCD and the master controller screen simultaneously.
What is the difference between the PCT-1, PCT-2, and PCT-3?
All three probes measure EC and water temperature via Mini DIN terminal, but they differ in installation capability and sensor board support. The TrolMaster PCT-1 is a reservoir drop-in probe compatible with AMP-2 only. The PCT-2 adds inline PVC piping compatibility alongside reservoir drop-in use, also on AMP-2. The PCT-3 is a redesigned version with a reduced-diameter sleeve and threaded body for direct installation into standard ¾" PVC tee fittings, and is compatible with both AMP-2 and AMP-3 boards — making it the most versatile option for inline installations and AMP-3-based controller setups.
Which sensor boards and controllers is the PCT-2 compatible with?
The PCT-2 is compatible with the AMP-2 sensor board, used with the Aqua-X NFS-1 controller. It connects via Mini DIN terminal directly to the AMP-2 with no additional adapters. For setups using AMP-3-based controllers such as the Aqua-X NFS-2 or NFS-3, the PCT-3 is the appropriate EC/Temp probe.
Can the PCT-2 be installed inline in a PVC piping system?
Yes — the PCT-2 supports inline installation in PVC piping systems in addition to reservoir drop-in use. For installations specifically requiring a standard ¾" PVC tee fitting connection, the PCT-3 features a redesigned threaded body and reduced-diameter sleeve purpose-built for that fitting type. The PCT-2 is the practical choice when existing piping accommodates it and AMP-2 is the sensor board in use.
Why does monitoring EC and water temperature matter?
EC measures total dissolved solids in the water, giving you a direct read on nutrient concentration — too low and plants are underfed, too high and you risk nutrient burn. Water temperature affects both nutrient uptake efficiency and dissolved oxygen levels. Tracking both continuously allows you to catch and correct imbalances before they impact plant health or yield.
Should I pair the PCT-2 with a pH probe?
Yes — EC and pH together give you a complete picture of nutrient solution quality. The PCT-2 pairs directly with the PPH-2 pH sensor, both connecting to the same AMP-2 sensor board. This combination covers all three critical water quality parameters — pH, EC, and temperature — in a single monitoring setup without additional hardware.
How long is the PCT-2 cable — is it enough for most installations?
The PCT-2 includes a 3.6-meter (approximately 12-foot) cable, which is sufficient for most reservoir and inline installations where the AMP-2 sensor board is mounted nearby. For installations requiring greater separation between the probe and the sensor board, cable extension options should be considered.
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