Pool Photometer

Photometric multi-parameter analysis and measurement for pools


A key element of any professional swimming pool chemical dosing system, SEKO’s Pool Photometer provides multi-parameter analysis of chlorine, pH and ORP to help operators maintain immaculate water quality.

With a data logger and probe holder for a hydraulic closed loop, plus RS485 port with Modbus RTU protocol, the Pool Photometer provides a fully-compatible remote data logging interface.

The Pool Photometer employs the DPD analysis system for perfect results every time, using a peristaltic pump controlled via intuitive controls and a backlit graphic display.



  • pH (0 – 14)

  • ORP (0 – ±1,500mV)

  • Free chlorine (0 – 5 ppm)

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Accessibility to SekoWeb portal to manage parameters via Kommbox gateway device

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Galvanic electrical and measure insulation

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Installation kit included

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Multi-language menu

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Professional parameter setting

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Remote alarm relay

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Wizard probe calibration and degree of health

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Proportional dosing mode

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Hydraulic chamber measure for closed loop and water drain dedicated to chemical reagents used during chlorine measurement

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Display provides historical graphical reports for each measure courtesy of built-in data logger

Other Models for

Pool Photometer

Photometer System

Photometer EL

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DPD Pump

  • Peristaltic pump: 1 mechanical support
  • Silicone tube: 3 x 5 mm
  • Flow rate: 0.07 cc sample measure backpressure
  • DPD chemical: 1 litre 48 days at 5-minute period sample
  • Pool size: professional

IP65 Enclosure

  • Dimensions: 276 x 514 x 126.5 mm (LxHxD)
  • Material: ABS

Main Board

  • Graphic display: 64x128-pixel with back light
  • Power supply: 100 – 240 Vac, 50/60Hz
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Pool Photometer Technical Data Sheet