Security Pool Plus | Dosing unit pH and Redox

€ 2096,37
  • Automatic measuring and dosage system
  • For pH and chlorine
  • Precise and reliable measurements
More info

In stock, delivery time: 2 business days.

Need to know

  • Automatic measuring and dosage system
  • For pH and chlorine
  • Precise and reliable measurements


Since it was founded in 1978, Hanna Instruments has grown into one of the largest global players in the field of development, production and the sale of measuring and control equipment for water quality analysis. The Security Pool Plus is one of their show-pieces.

Hanna Instruments has developed a specific range of measuring instruments for the fast and reliable analysis of swimming pools, whirlpools, hot tubs and spas. Fiddling around with test strips and test kits is now a thing of the past. Electronic measurements are more precise, more reliable and faster.

Characteristics of the Security Pool Plus:

  • precise and reliable measurements
  • simple and faster to install
  • quiet peristaltic pumps with adjustable flow rate (0.5 to 3.5 L/h) suitable for spas to large swimming pools
  • proportional dosing
  • delay time can be adjusted when starting up system
  • large, back-lit easy-to-read LCD display with simultaneous pH, ORP and temperature readings
  • log function and GLP values of electrodes, most recent calibration data saved in the memory, password-protected
  • automatic calibration (will not calibrate if the electrode variation is too great)
  • high and low alarm
  • analogue output for PLC control or data transfer to a PC screen
  • multi-coloured LED indicates whether the system status is measuring, dosage or alarm

The 'Plus' stands for extras:

  • proportional pump function for very precise dosing
  • dosing pumps with adjustable flow rate for spas and small to large swimming pools
  • internal memory to record measurement values and calibration data
  • automatic calibration
  • adjustable alarm and password protection

Furthermore, this is the world's first automated system with a digital and combined pH/ORP electrode with integrated temperature sensor and earthing point.


  • simple and quick to install, calibrate and replace
  • not susceptible to interferences from cables or stray currents
  • stable measurements
  • long service life
  • measures the water temperature

Safe and efficient

  • digitally combined pH, ORP and temperature electrode with integrated earthing point
  • mains power supplied via the circulation pump's electrical circuit
  • flowswitch can be connected optionally
  • alarm can be set to prevent overdosing of chemicals
  • 'intelligent' dosing is dependent on the pH value being correct

The Security Pool is supplied with a full installation kit, including:

  • combined pH and ORP electrode with temperature sensor and earthing point
  • suction and injection lines
  • saddle clamps (diam. 50 mm)
  • coupling for injectors

pH and redox calibration liquids

Technical Specifications

245 x 188 x 55 mm
Power supply
220 V adapter
1700 g
0.00 to 14.00 pH; Redox: ±2000 mV; -5.0 to 105.0 °C
0.01 pH; 1 mV (Redox); 0.1 °C
±0.05 pH; ±5 mV; ±1 °C
Automatic, to 2 points
Temperature compensation
Automatic from -5.0 to 105.0 °C
High and low, each parameter can be adjusted separately
pH and Redox regulation
Proportional with adjustable set point and proportional range, delay time and overdose protection
Measurements (pH, redox, temperature), data (fault, alarm, power failure)
Pump regulation
Manual, from 0.5 to 3.5 L/hour for each pump
Programming and calibration functions are password-protected
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€ 2096,37