Bluelab Guardian Monitor - Legana Plants Plus
Bluelab Guardian Monitor - Legana Plants Plus
Bluelab Guardian Monitor - Legana Plants Plus

Bluelab Guardian Monitor

  • 24/7 continuous monitoring of pH, EC and temperature in reservoirs
  • Large, backlit display for at-a-glance viewing
  • High and low alarms to alert you when parameters are out of range
  • Easy pH calibration function with on-screen instructions
  • 2-metre cable lengths for best positioning and viewing
  • Flexible mounting options for walls, posts and racks
  • Easy-to-clean display built for clean environments
Bluelab Guardian Monitor - Legana Plants Plus

Bluelab Guardian Monitor

Directions of Use

Bluelab Guardian Monitor Installation

  1. Fit the (optional) pH probe holder to the stem of the pH probe using a gentle twisting motion.
  2. Place the pH probe into the reservoir and push the suction cup onto the side of the reservoir but far enough down so the pH probe tip is in the solution.
  3. The holder prevents damage to the pH probe from banging onto the side of the reservoir with movement of the solution.
  4. Place the conductivity/temperature probe into the reservoir selected.
NOTE: Both the Bluelab pH Probe and Bluelab Conductivity/Temperature Probe require submersion in the liquid for a measurement to occur.
NOTE: Do not pour concentrated nutrient solution or pH adjuster directly onto probes when in the reservoir, as very strong acid may damage the probes or your alarms (if set) may trigger.

Technical Specifications

Bluelab Guardian Monitor

Measurement Range (pH):0.0 - 14.0−log[H+]
Measurement Range (EC): 0.0 - 5.0 mS/cm
Measurement Range (CF): 0.0 - 50
Measurement Range (500 ppm / TDS): 0 - 2500 ppm 
Measurement Range (700 ppm): 0 -3500 ppm
Measurement Range (Temperature): 0 - 50 ˚C / 32 - 122 ˚F
Resolution (pH): 0.1−log[H+]
Resolution (EC): 0.1 mS/cm
Resolution (CF): 1
Resolution (500 ppm / TDS): 10 ppm
Resolution (700 ppm): 10 ppm
Resolution (Temperature): 1 °C / 1 °F
Accuracy at 25 ˚C / 77 ˚F (EC): ± 0.1 mS/cm
Accuracy at 25 ˚C / 77 ˚F (500 ppm / TDS):
 ± 50 ppm
Accuracy at 25 ˚C / 77 ˚F (700 ppm): 
± 70 ppm
Accuracy at 25 ˚C / 77 ˚F (Temperature):
 ± 1 ˚C / ± 2˚F
Operating Temperature: 0 - 50 °C / 32 - 122 °F
Automatic Temperature Compensation: Yes, if conductivity probe is in
same solution as pH probe
Calibration (pH): Two point calibration pH 7.0 & pH 4.0 or pH 10.0 
Calibration (EC): Not required
Calibration (Temperature): Not Required
Units: EC, 700 ppm, 500 ppm, °C, °F
Power Source Input: 100-240 Vac, 50-60 Hz, 5 VA
Power Source Output:
5VDC 1Amp
Signal Range Indoor / Urban: 20 meters / 66 feet
Signal Range Outdoor / RF line-of-sight: 50 meters / 164 feet
Frequency Band: 2.4 GHz ISM
System Requirements: Microsoft Windows XP or greater for Bluelab Connect Software. Internet connection for remote access & datalogging to the cloud
Certs: CE, FCC 

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