batch tankLINK pH Sensor

What It Is

The Growlink batch tankLINK pH Sensor is a single probe designed exclusively for use with the Growlink batch tankLINK controller. It connects via a standard BNC-style connector — push on, quarter-turn clockwise to lock — and feeds continuous pH data to the tankLINK's onboard processor, which in turn passes readings into Growlink OS for logging, alert triggering, and automation rule execution.

Measurement range covers the full 0–14 pH scale with ±0.02 accuracy and 0.01 resolution. For commercial cannabis and hemp operations, where a half-point drift in the nutrient tank can translate directly into lockout events at the root zone, those tolerances matter. The sensor ships as one probe (1x) and is the field-replaceable element when a probe ages out or reads erratically — the tankLINK controller itself stays in place.

Who Needs This

Any licensed cultivator running a Growlink batch tankLINK as part of their LINKS ecosystem will eventually need a replacement pH probe. Electrochemical pH sensors have a finite service life — glass bulb degradation, electrolyte depletion, and coating from nutrient salts all degrade accuracy over time. Running on a compromised probe means your automation is responding to bad data: your rules still fire, your dosing still runs, but your pH targets are fiction.

This sensor is also the right add-on if you're commissioning a new batch tankLINK setup and want a spare on-hand from day one — particularly relevant for large or multi-room facilities where a mid-cycle probe failure creates a gap in compliance-grade data logging. It is purpose-built for Growlink's ecosystem and calibrates directly through the tankLINK's LCD wizard using standard pH 7.00 and pH 4.01 calibration solutions.

Integration & Calibration

The pH sensor plugs into the dedicated BNC input on the batch tankLINK controller. No adapters, no signal conversion — the controller reads the probe natively and surfaces live values on its onboard LCD alongside EC, temperature, and tank level data. All readings feed into Growlink OS, where they can trigger alert notifications the moment pH drifts outside operator-set thresholds, and historical data is stored for trend analysis and compliance documentation.

Calibration is a two-point process performed through the tankLINK's built-in calibration wizard. The controller stores the date of the last calibration in memory and displays it at the start of each subsequent calibration run — a detail that matters for GMP documentation and state-level compliance tracking. Installation angle matters: the probe must be installed above horizontal with the tip pointing downward at a minimum 10° angle to prevent air bubble formation in the electrode stem, per Growlink's own installation guidance.

How It Fits a Commercial Build

The batch tankLINK sits at the nutrient management layer of a Growlink LINKS build. A fully deployed tankLINK reads pH, EC, temperature, and tank level simultaneously, feeding all four parameters into a single automated system managed through Growlink OS. The pH sensor is the probe that handles that first critical parameter. When it's accurate, automated pH correction rules, refill triggers, and deviation alerts all function as designed. When it isn't, every downstream automation decision is compromised.

Inline manifold installation is also supported: sensors can be plumbed inline using 1-inch series sensor manifolds with removable compression fittings and O-ring seals, rated for flow rates up to 30 GPM and max pressure of 60 PSI. This suits inline monitoring on recirculating or transfer lines in larger fertigation setups. For float-style tank monitoring, the probe can be deployed on a pontoon assembly designed to maintain consistent sensor contact with the solution as tank level fluctuates. HSC supplies the full Growlink LINKS accessory line — contact us to spec the right configuration for your facility.