Bluelab Guardian Monitor Inline Wi-Fi – Continuous pH, EC and Temperature Monitoring System

The Bluelab Guardian Monitor Inline Wi-Fi is a professional monitoring system designed to continuously measure pH, electrical conductivity (EC), and temperature directly inside nutrient delivery and irrigation lines. Unlike conventional reservoir monitors, its inline probes measure the solution as it flows through the system, providing valuable information about nutrient delivery conditions.

Designed for commercial hydroponic facilities, greenhouse fertigation systems, recirculating irrigation networks, and automated nutrient management installations, this monitor helps growers detect changes in solution quality and maintain consistent growing conditions.

With built-in Wi-Fi connectivity and integration with the Edenic by Bluelab app, growers can check measurements remotely, receive alerts when parameters exceed configured limits, and review historical data.

Its large, plant-safe LED display provides continuous on-site readings, while dedicated inline probes allow installation in pressurized irrigation systems operating at pressures up to 100 psi (7 bar).

Continuous Inline Monitoring of pH, EC and Temperature

Monitoring nutrient solution conditions directly inside an irrigation line helps growers understand what is being delivered to their plants, rather than relying exclusively on reservoir measurements.

The Bluelab Guardian Monitor Inline Wi-Fi measures three important parameters:

pH Measurement

The inline pH probe measures acidity and alkalinity, helping growers identify whether the nutrient solution is within the preferred pH range for their crops.

The replaceable double-junction pH electrode features a 3/4-inch threaded connection, a BNC connector, and a durable design suited to pressurized installations.

Electrical Conductivity (EC)

The inline conductivity probe measures EC, an indicator of dissolved nutrient concentration.

Readings can be displayed in EC, CF, ppm 500 (TDS), or ppm 700, providing flexibility for different nutrient management practices.

Temperature Measurement

The integrated temperature sensor measures nutrient solution temperature to help growers track changes that may affect root-zone conditions and nutrient delivery.

The monitor operates continuously, reducing the need for repeated manual spot checks during daily irrigation operations.

Wi-Fi Monitoring and Edenic Connectivity

The Bluelab Guardian Monitor Inline Wi-Fi connects to the Edenic by Bluelab app using its built-in Wi-Fi connection.

Supported functions include:

• Remote monitoring of pH, EC, and nutrient solution temperature.
• High and low parameter alerts sent to a connected device.
• Historical measurement reports and trend analysis.
• Remote adjustment of compatible alarm settings.
• Access to reservoir and irrigation system data over time.

The monitor also includes non-volatile memory to retain its settings after a power interruption.

Key Features and Benefits

• Inline Probe Installation: Measures nutrient solution conditions directly within irrigation or dosing lines.

• Three-Parameter Monitoring: Tracks pH, conductivity, and temperature continuously.

• Pressure-Rated Probes: Suitable for systems operating at pressures up to 100 psi (7 bar).

• Wi-Fi Connectivity: Provides remote monitoring and alerts through the Edenic app.

• Large LED Display: Features adjustable brightness and plant-safe green illumination.

• Programmable Alarms: Alerts growers when measurements exceed selected high or low limits.

• Replaceable Inline pH Probe: Simplifies maintenance without requiring replacement of the complete monitor.

• Multiple Conductivity Scales: Supports EC, CF, ppm 500, and ppm 700.

• Power-Loss Memory: Retains programmed settings when electrical power is interrupted.

• Wall-Mounted Design: Suitable for permanent installation in commercial growing facilities.

Inline Installation and Setup

The Bluelab Guardian Monitor Inline Wi-Fi is designed for permanent installation in compatible nutrient delivery systems.

Step 1 – Mount the Monitor

Install the display unit on a wall or suitable support near the irrigation system, ensuring that probe cables can reach their intended installation points.

Step 2 – Install the Inline Probes

Mount the pH and conductivity/temperature probes in compatible sampling points or fittings within the nutrient line.

The inline pH probe uses a 3/4-inch threaded connection, while the supplied adapter supports 1-inch NPT installations.

Ensure the fittings are correctly sealed and rated for the operating pressure of the system.

Step 3 – Connect the Sensors

Connect the probes to the appropriate inputs on the monitor. The pH probe uses a standard BNC connection.

Step 4 – Calibrate the pH Probe

Calibrate the pH sensor using fresh pH 7.0 and pH 4.0 calibration solutions according to Bluelab's instructions.

Step 5 – Configure the Display and Alarms

Select the preferred conductivity and temperature units, adjust the display brightness, and establish high and low alarm limits.

Step 6 – Connect to Edenic

Use the Edenic app to configure Wi-Fi connectivity and enable compatible remote monitoring functions.

Important: Depressurize and isolate the irrigation line before installing or removing probes. Follow Bluelab's installation instructions and use fittings appropriate for the pressure, chemical composition, and pipe configuration of the system.

Technical Specifications

Accuracy specifications are stated at 25°C (77°F). The maximum pressure rating applies to the specified inline probe system and does not replace the need to verify fitting compatibility.

What's Included?

The standard Bluelab Guardian Monitor Inline Wi-Fi package includes:

• 1 × Bluelab Guardian Monitor Inline Wi-Fi
• 1 × Bluelab pH Probe Inline with storage cap
• 1 × Bluelab Conductivity/Temperature Probe Inline
• 1 × Bluelab 3/4-inch to 1-inch NPT adapter
• 1 × 5V DC power supply
• Power plug adapters for North America, Europe, the UK, and Australia/New Zealand
• 4 × Mounting screws
• 2 × Cable ties
• 1 × 18 mL Bluelab pH 7.0 Calibration Solution Sachet
• 1 × 18 mL Bluelab pH 4.0 Calibration Solution Sachet
• 1 × 18 mL Bluelab KCl Probe Storage Solution Sachet

Note: Additional piping, sampling assemblies, or installation fittings may be required depending on the irrigation system. These components are not necessarily included.

Maintenance and Probe Care

Regular probe maintenance is important for reliable continuous monitoring.

Clean and calibrate the pH probe according to Bluelab's recommendations, generally at least once per month. Keep the pH electrode hydrated with appropriate KCl storage solution whenever it is removed from service.

Inspect the conductivity probe for nutrient buildup and clean it using approved procedures.

For inline installations, check probe fittings and seals periodically for signs of leakage or deterioration. Always isolate and depressurize the line before servicing the probes.

Frequently Asked Questions About the Bluelab Guardian Monitor Inline Wi-Fi

What does the Bluelab Guardian Monitor Inline Wi-Fi measure?

It continuously measures pH, electrical conductivity (EC), and temperature directly in nutrient delivery or irrigation lines.

What is the difference between the Guardian Monitor Inline Wi-Fi and the standard Guardian Monitor Wi-Fi?

The inline model uses probes installed directly in the irrigation line, while the standard Guardian Monitor Wi-Fi uses probes submerged in a nutrient reservoir. Both provide continuous monitoring and Edenic connectivity.

Does the Guardian Monitor Inline Wi-Fi automatically adjust pH or nutrients?

No. It is a monitoring instrument and does not include dosing pumps. Automatic adjustments require separate compatible control and dosing equipment.

Can the monitor be used in pressurized irrigation lines?

Yes. The inline probe system is designed for operating pressures up to 100 psi (7 bar) when installed with compatible fittings.

Can the measurements be checked remotely?

Yes. Wi-Fi connectivity enables supported remote monitoring, alerts, and historical data reporting through the Edenic app.

Does the inline pH probe need regular calibration?

Yes. Regular cleaning, hydration, and calibration are necessary to maintain accurate pH measurements. Bluelab generally recommends monthly pH probe maintenance.