dosing systems for swimming pools - Seko

DOSING SYSTEMS FOR 

SWIMMING POOLS 

innovation > technology > future

Dosing systems for 

Swimming pools 

The quality of the water from a health, aesthetic, 

and safety point of view is the main characteristic 

in dealing with swimming pools. Seko has made 

automatic systems for all needs and applications - 

private, semi-public, and public swimming pools. 

The automatic systems make it possible to analyse 

the water and to suitably pilot dosing units to 

maintain optimum water quality. The ease with 

which the unit is calibrated and set protects the 

work done by both installer and end user, in order 

to provide a service that fully complies with all 

relevant laws. 

Our wide range of measuring and dosing systems 

provides a wide range of solutions in terms of 

type of measurement, dosing methods, and full 

compatibility with the widest range of products 

used for treating pool water. 

Seko offers its services, acting as a partner that is 

capable of designing and developing the solution 

that best meets your needs for all swimming pool 

applications. 

2 water & industry > dosing systems for swimming pools

Domestic 

index 

poolbasic EVO 4 

Single pH 5 

Single Redox 5 

Double pH/Redox 5 

kontrol invikta 6 

Single pH or Redox 6 

Double pH/Redox 6 

kontol panel 0 2 - pH 7 

Pool plus kontrol 40 (pH/Redox) 8 

TmDigit Timed 9 

Professional 

kontrol panels (with Amperometric Cell) 10 

PC (pH/Chlorine) 10 

PR (pH/Redox) 11 

CL (Chlorine) 11 

PRC (pH/Redox/Chlorine) 12 

PC-Cond (pH/Chlorine/Conductivity) 12 

DPR (pH/Redox) 13 

teknaEVO TPR (pH/Redox) 13 

kontrol panles (with Potentiostatic cell) 14 

pH-CL/p 14 

pH-Redox-CL/p 14 

CL-Sensor probes 15 

photometer systems (pH/Chlorine DPD/Redox/Temp.) 16 

hand held measuring instruments 18 

measure instruments 21 

kontrol 40 (pH/Redox/Conductivity) 21 

kontrol 500 (pH/Redox/Chlorine/O 2 /Turbidity/Conductivity) 21 

probes and accessories 22 

dosing unit and accessories 24 

invikta 24 dynamik time 24 

peristaltic pump 25 tekna EVO 25 

spring series 25 kompact AXL-DPG 26 

filters 26 stirrers 27 

tanks 27 suction plungers 27 

innovation > technology > future 3

poolbasic EVO 

General features 

Level probe input 

Flow sensor input 

Flow signal input (at 230 V voltage for connection to 

circulation pump) 

PT100 temperature sensor input (optional sensor) 

seko group has developed a simple and reliable system made up of an 

industrial container that houses the dosing pumps and instruments thus 

making installation and maintenance easy. Application of peristaltic 

technology - low noise output, easy to use, low maintenance, protection 

against siphoning phenomena, avoidance of direct contact with chemical 

products. 

Transaxle Technology 

Relay control for indicating when the dosing pump is 

working (230 V contacts) 

End product level alarm 

Pump on “HOLD” for calibration or alarm status 

OFA (Over Feed Alarm) on the dosing cycle 

Plastic container 

with IP 65 protection level 

LED Display 

(pH and Redox version) 

DIGITAL Display 

(Double version) 

Provides added support and stability to the gear shaft. This equalizes roller 

pressure, extending the life of the motor gearbox and squeeze tube. 

Protection 

against unauthorised interference 

Electrode 

self-calibrating and quality control 

Immediate set-point reading 

Simply and fast 

Set Point programming and regulation 

Power Supply 

230 Vac (115 Vac upon request) 

Automatic proportional dosing 


pH Redox 

■ Flow Rate 1.5 lt/h o 5 lt/h 

■ Backpressure 1.5 bar 

■ pH measuring scale setting 6.2 ... 8.0 

Double (ph/Redox) 

■ Flow Rate 

1.5 lt/h o 5 lt/h 

■ Backpressure 

1.5 bar 

■ pH measuring scale setting 

0...14 

■ Redox measuring scale setting 

0...1000 mV 

Installation 

Kit 

Pool Basic Evo pH 

Pool Basic Evo Redox 

Pool Basic Evo Double 

■ Flow Rate 1.5 lt/h o 5 lt/h 

■ Backpressure 1.5 bar 

■ Redox measuring scale setting (A and B) 

480 540 600 660 720 

510 570 630 690 750 

660 720 780 840 900 

690 750 810 870 930 

innovation > technology > future 5 

A 

B

kontrol 

invikta 

kontrol invikta double 

It is an easy to use dosing system composed of a control instrument and a solenoid dosing pump. 

This system is the right solution to control pH or Redox (ORP) in those applications were is 

required to dose up to 5 bars pressure. 

User-friendly display and keyboard interface for easy programming 

Password protection for programming menu 

Relay ouput for remote alarm 

FWM (Frequency Width Modulation) proportional dosing 

Installation Kit 

kontrol invikta single 

Technical specifications 

Power supply 50/60 Hz 100÷240 VAC 

Consumption 12 W or 18 W 

Pump flow rate 5 lt/h 

Maximum back-pressure 5 bar 

pH range 0 ÷ 14.0 pH 

Redox range 0 ÷ +1000 mV 

Reading precision ± 0,1 pH; ± 10 mV 

Accuracy ±0,02 pH; ± 3 mV 

Electrode calibration Automatic 


kontrol 

panel O 2 

Technical specifications 

Power supply 50/60 Hz 100÷240 VAC 

Consumption 60 W 

Pump flow rate 5 lt/h 

Maximum back-pressure 5 bar 

pH range 0 ÷ 14.0 pH 

Oxygen range 0 ÷ 20.0 ppm 

Reading precision ± 0,1 pH; ± 0,1 ppm 

Accuracy ±0,02 pH; ± 0,1 ppm 

Electrode calibration Automatic 

Kontrol pH-Ox (O2) is the seko solution to Swimming pool Water Treatment with 

active Oxigen. 

The system incorporates the measurement and the dosing all in one small dimensions panel, 

supplied with all accessories for an easy, safe and fast installation. 

The pH is controlled by a 

PR40 control instrument 

(with related pH probe) that 

drives a solenoid dosing pump 

Invikta series rated 5 lt/h at 

5 bar to dose an acid chemical. 

kontrol 

40 pH 

0 ÷ 14.0 pH 

kontrol 

500 pH 

0 ÷ 20.0 ppm 

The Oxygen control is done with the 

OX500 control instrument (and 

related oxygen sensor) that drives a 

solenoid dosing pump Invikta 

series rated 5 lt/h at 5 bar to dose 

hydrogen peroxide. 

Typical dissolved oxygen value for a 

correct desinfection is 15ppm. 

invikta 

5 lt/h 

5 bar 

Both instruments are 

equipped with 

functions for 

proportional dosing, 

electrodes quality 

control and easy and 

fast comprehension 

programming menus. 

probe holder 


Pool Plus 

The POOL PLUS range is made up of three different 

systems, designed and built with particular 

attention being given to needs expressed by 

clients, and able to measure and control pH and 

Redox levels under any operating condition. 

POOL PLUS 

pH measurement scale 0...14.00 pH 

Redox measurement scale 0...1500 mV 

Alarm kit standard 

Direct connection of pumps 

0/4…20 mA output 

for transmitting measurements 

POOL PLUS P 

pH measurement scale 0...14.00 pH 

Redox measurement scale 0...1500 mV 

Alarm kit opzionale 

Direct connection of pumps 

Manual calibration of instruments 

Pump pause for level or flow alarm 

Simple to install. 

Plastic container with degree of protection IP 55 

Electrical connections on internal terminal board 

Power supply 230 Vac 115 Vac (upon request) at 

50 - 60 Hz 

Switch to pause pump 

Main switch for the system 

Remote alarm cut-out switch (only with alarm kit) 

LCD display 

pH-20 instrument for measuring and controlling 

the pH 

MV-20 instrument for measuring and controlling 

Redox 

Precision multi-turn regulation trimmer 

Two programmable set points (pump and alarm 

setting) 

Installation kit 

Main switch for the 

system 

Pool Plus 

LCD measurement 

display 

Pool Plus P 

Built-in dosing system, easy to maintain 

Visual alarm 


TmDigit 

The TM series of dosing systems use simple analogue or digital programmers to provide effective, economical timed dosing of 

chemical products. 

Power supply: 230 Vac (115 Vac upon request) 

Power rating: 5 W 

Overall dimensions: 155 x 213 x 110 mm 

Analogue Programmer 

0,4 lt/h - 1,5 ba 

The analogue version can be used for programming daily 

events, and it is also possible to set operating time easily, using 

the internal circuit. 

Digital or 

Analogue timer 

system 

IP 55 Protection level 

Simplicity of installation, use and maintenance 

Integrated Peristaltic Pump 

Digital or analogue time programmer 

Low noise output 

Digital Programmer 

Up to a maximum of 8 events can be programmed for the system 

for each day of the week. The programmer also makes it 

possible to activate the dosing pump manually or to deactivate 

its activation. 

Easy Maintenance of Peristaltic Pump Simplicity of installation 


kontrol panels with Amperometric Cell 

The kontrol series of panels are compact and easy to use and include all the accessories required for immediate installation (buffer 

solutions for calibrating pH and Rx, and DPD colour system for Chlorine calibration). 

Self-calibration of all measurements 

Compact probe holders, complete with flow sensor, 

flow rate regulating valve and tap for bleeding the 

liquid. 

Alarm signal to indicate that the water is not 

flowing, 

Instruments with IP 65 protection level. 

Alarm relay (5 A – 250 Vac) 

4÷20 mA outputs for each parameter measured, with 

provision for selecting the interval 

kontrol PC 

(pH/Free Chlorine) 

Panel for measuring and setting the pH value and Chlorine 

concentration. 

PC95 Instrument - pH 0 ÷ 14.0 / Chlorine 0 ÷ 5.0 ppm 

Self-cleaning (Pt-Cu) amperometric cell 

Self-calibration in relation to the physical-chemical 

characteristics of the water to be measure 

pH probe 

Self-calibration with quality control of the probe 

Solenoid valve to shut off the flow of water for selfcalibration 

Mechanical filter at water intake 

Available upon request the version for high conductivity 

(example water of sea) 

Compact 

plumbing 

Visible 

electronic box 

Easy 

to assemble 

Power supply 230 Vac (standard) or 115 Vac (upon 

request) 

Programmable set points and alarm 

Pump pause function during calibration 

Temperature reading and temperature offset 

(automatic with optional PT100 probe) 

Adjustments on set point: On/Off, pause/run, 

proportional by impulse 


kontrol PR 

(pH/Redox) 

Panel for measuring and setting the pH value and Redox 

potential (ORP). 

PR95 Instrument - pH 0 ÷ 14.0 / Redox 0 ÷ 1000 mV 

Redox (ORP) probe 

pH probe 

Self-calibration with quality control of the probe 


Compact 

plumbing 

Visible 


kontrol CL 

(Free Chlorine) 

Easy 

to assemble 

Panel for measuring and setting the Chlorine concentration. 

CL95 Instrument - Chlorine 0 ÷ 5.0 ppm 



characteristics of the water to be measured 

Solenoid valve to shut off the flow of water for selfcalibration. 

Compact 

plumbing 

Visible 


Easy 

to assemble 


kontrol PRC 

(pH/Redox/Free Chlorine) 

Panel for measuring and setting the pH value, Redox potential 

(ORP), and Chlorine concentration. 


PR75 Instrument - Redox 0 ÷ 1000 mV 

Self-cleaning (Pt-Cu) amperometric cel 



pH probe 

Redox (ORP) probe 

Self-calibration with quality control of the probes 

Solenoid valve to shut off the flow of water for selfcalibration 


Compact 

plumbing 

Visible 


Easy 

to assemble 

kontrol PC-Cond 

(pH/Chlorine/Conductivity) 

Panel for measuring and setting the pH value, conductivity (mS) 

and Chlorine concentration 


CD75 Instrument - Conductivity 0 ÷ 20000 µS 




pH probe 

K1 conductivity probe 

Compact 

plumbing 

Visible 


Easy 

to assemble 


kontrol DPR 

(pH/Redox) 

Panel for measuring and setting the pH value and Redox 

potential (ORP) 

Dosing pump with built-in Tekna DPH instrument 

pH 0 ÷ 14.0 

Dosing pump with built-in Tekna DRX instrument 

Redox ± 1500 mV 

Redox probe 

pH probe 

Self-calibration with quality control of the probes 


Probe holder complete with sensor and flow regulator 

Compact 

plumbing 

teknaEVO TPR 

CAL 

PROG 

proportional dosage 

Code 

600 

603 

800 

803 

Alarm 

mode 

enter 

Visible 


Pressure 

[bar] 

20 

18 

12 

10 

8 

2 

12 

10 

5 

1 

5 

4 

2 

1 

start 

stop 

ESC 

Flow rate 

[lt/h] 

2.5 

3 

4 

5 

6 

8 

7 

10 

15 

18 

20 

25 

40 

54 

Easy 

to assemble 

Digital dosing pump with pH/Redox control meter 

built in. 

Digital interface for constant or proportional 

dosing, depending on the measured pH or Rx 

value 

PT100 probe input for thermal compensation 

Repetition alarm relay 

Input On-Off for remote control 

4÷20 mA output for measure transmission 

Controller Measure single parameter 

pH : 0÷14,00 pH or Redox : ±1500 mV 

Fequency max 

[stroke./min] 

120 

160 

320 

300 

Stroke capacity 

[cc/stroke] 

0,35 

0,41 

0,42 

0,52 

0,63 

0,83 

0,36 

0,52 

0,78 

0,94 

1,11 

1,39 

2,22 

3 

Ø Connections 

IN / OUT [mm] 

4 / 6 asp. 

4 / 7 mand. 

Model 

Consumption 

[W] 

12,0 

4 / 6 12,2 

4 / 6 23,9 

8 / 12 22,2 


kontrol panels with Potentiostatic cell 

Pre-Assembled panel for pH, Redox and Chlorine control. 

Self-calibration of all measurements 

Compact probe holders, complete with flow sensor, 

flow rate regulating valve and tap for bleeding the 

liquid. 

Alarm signal to indicate that the water is not flowing, 

Instruments with IP 65 protection level 

Alarm relay (5 A – 250 Vac) 

Power supply 100÷240 VAC 

kontrol pH-CL/p 

(pH/Free Chlorine) 

It is composed of one PR40 for pH control and one 

CL500 for chlorine control with pH probe, probe holder 

and connection box. 

Measurement range: 

0÷14 pH; 0÷10 ppm Free Chlorine 

kontrol pH-CL/p 

4÷20 mA outputs for each parameter measured, with 

provision for selecting the interval 

Programmable set points and alarm 

Pump pause function during calibration 

Temperature reading and temperature offset 

(automatic with optional PT100/NTC probe) 

Adjustments on set point: On/Off, pause/run, 

proportional by impulse 

kontrol pH-Redox-CL/p 

(pH/Redox/Free Chlorine) 

It is composed two PR40, for pH and ORP control, and one 

CL500, for chlorine control, pH and ORP probes, probes-holder and 

connection box. 

Measurement range: 

0÷14 pH; 0÷10 ppm Free Chlorine; 0÷1000 mV Redox 

kontrol pH-Redox-CL/p 


CL-Sensor Probe 

This range consists of potentiostatic amperometric probes to measure free or total chlorine for 

applications such as: water treatment, swimming pools, industrial applications and more. 

The wide range of probes allows a better choice depending on the parameter to be tested, thus obtaining 

a more accurate measurement. 

The two-wire interface allows quick and easy installation 

Calibration of the probe is guided by the kontrol CL500 instrument 

CL-Sensor probe 

PSS-PR-CL-S probe holder 

F-CL-1 F-CL-2 F-CL-3 T-CL D-CL 

Measurement 0÷10 ppm 0÷10 ppm 0÷10 ppm 0÷10 ppm 0÷10 ppm 

Resolution ±0.01 ppm ±0.01 ppm ±0.01 ppm ±0.01 ppm ±0.01 ppm 

pH Scale 4÷8 pH 4÷12 pH 4÷11 pH 0÷14 pH 0÷14 pH 

Flow ( * ) >=30 lt/h >=30 lt/h >=30 lt/h >=30 lt/h >=30 lt/h 

Temperature 45°C 45°C 45°C 45°C 45°C 

Pressure 1 Bar 0,5 Bar 0,5 Bar 0,5 Bar 1 Bar 

Power supply 12÷30 Vdc 12÷30 Vdc 12÷30 Vdc 12÷30 Vdc 12÷30 Vdc 

Output signal 4÷20 mA ( ** ) 4÷20 mA ( ** ) 4÷20 mA ( ** ) 4÷20 mA ( ** ) 4÷20 mA ( ** ) 

Diameter 25 mm 25 mm 25 mm 25 mm 25 mm 

Length 225 mm 225 mm 225 mm 225 mm 225 mm 

Body material PVC PVC PVC PVC PVC 

Membrane M20 M48 M48G M48 M20 

Electrolyte ECL1 ECC1 ECS1/Gel ECP1/Gel ECD4 

Cable Max. 15 meters Max. 15 meters Max. 15 meters Max. 15 meters Max. 15 meters 

Treatment Free chlorine Organic free chlorine Free chlorine Total Chlorine Chlorine Dioxide 

type Inorganic (Chloroisocyanurate) Inorganic (Inorganic or Organic) 

( * ) Stabilization time average 15 minutes, maximum 1 hour 

( ** ) Output of current signal proportional to the measurement 


photometer 

system 

Multi-Parameter Control Unit for contemporary 

determination of Free Chlorine (Photometric 

System), pH, Redox and Temperature. 

The system is equipped with a graphic display 

subdivided into areas for simultaneous display of 

all available measurements. 

The removable cover guarantees the accessibility 

of the system and also allows: 

● Protection of the chemical reagents from 

ultraviolet rays 

● High visibility display 

● IP65 container protects from humid environments 

● Multilanguage user-friendly interface. The wide display 

allows the creation of graphics for each available measurement via 

an internal Data Logger function. 

● Mechanics with “flip 

door” permitting easy 

access to the electrical 

connections 

● BNC connectors on side of box 

facilitate quick maintenance of 

the pH and Redox probes 

The peristaltic pump, which 

has 4 pressure points, saves 

on reagents 

Continous monitoring of 

reagents using level probes 

The DPD reagent in powder 

form (to be diluted before 

use) is an excellent solution 

for safe storage 


Technical Features 

Free or Total Chlorine Measurement 0÷ 5 ppm Resolution 0,01 ppm Precision 1% FS 

pH Measurement 0÷14 pH Resolution 0,01 pH Precision 1% FS 

Redox Measurement ±1500 mV Resolution 1 mV Precision 1% FS 

Temperature Measurement 0÷50 °C (32 ÷ 106 °F) Resolution 0.1°C (.18 °F) Precision 1% FS 

Display 240x128 pixel backlit graphic 

Programming Via keypad with 4 bubble keys 

Digital Input Dry contact for disabling dosages 

Analogue Input 0/4÷20 mA for auxiliary measurements 

Power supply 90÷264Vac 50-60Hz 66 Watt 

Internal Data Logger Flash Memory 16000 records 

Recording interval 00:00 ÷ 99:99 minutes 

Type circular / refill 

Tabular / graphic display 

4 Analogue Outputs Size Chlorine, pH, Redox, Temperature 

Type 0/4÷20 mA galvanically isolated 

Lower / upper / inversion limit programming 

Maximum load 500 Ohms 

4 Set Point Relay Outputs nr. 2 for chlorine measurement + nr. 2 for pH measurement 

Max. relay load 3A (resistive) 230Vac 

Alarm Relay Output Lack of sample water 

Reagents run out 

Floodlight burned out 

Dirty cell 

Relay max. resistive load 3A at 230Vac 

2 Auxiliary Relay Outputs Programmable as Set Points for Redox measurement, Set Points for Temperature 

measurement, Timed activation for cell cleaning 

Relay max. resistive load 3A at 230Vac 

Serial Port Output (RS485) RTU MODBUS protocol with programmable Baud rate 1200 ÷ 38400 

Available version 

Probe holder 

Clean water inlet 

Special Outlet for 

waste water with 

DPD reagent 

Clean water 

outlet 

Total Chlorine + Temperature 

Free Chlorine + Temperature 

● Hydraulics with outlet of water containing reagents for 

chlorine measurement. This allows a considerable reduction in 

the quantity of water used for the measurement. The water used 

for checking the pH and Redox can be channelled towards the 

buffer tank, while only the water polluted by the DPD reagents will 

be drained off and managed separately in accordance with local 

regulations 

● Installation time reduced due to quick-coupling connections 

for sampling and outlet pipes 

● The unit has self-calibration for optical unit and ensures a high 

accurancy of Chlorine measurement precision using a 520 

nm sensor and light source emitted by a LED 

Free Chlorine+ pH + Temperature 

Free Chlorine + pH + Redox + Temperature 


Tester 

Practical waterproof 

support 

Sensor easy to replace 

pH Tester 

pH-Temp Tester 

Waterproof 

Batteries easy to 

replace 

Measurements from -1.00 to 15,00 pH 

(accuracy ±00,1 pH) 

Large, double reading, LCD display. 

Temperature measurement range: 

0-50°C or 32,0-122,0°F 

(accuracy 0,5°C or 0.9°F). 

Measurements from -1.00 to 15,00 pH 

(accuracy ±00,1 pH) 

These easy to use, extremely practical instruments are the latest generation of hand held 

instruments. 

Large LCD display 

Sensor and batteries easy to replace 

Easy to use 

Impermeable to water 

Self switch-off after 8,5 minutes 

ORP Tester 

(Redox) 

Measurements from 

–999 mV to 1000 mV 

(accuracy ± 2 mV). 

Standard 

Cond Tester 

Doble conductivity measurements range 

from 0 to 1990 µS/cm (accuracy ± 1% of full scale) 

from 0 to 19.90 mS/cm (accuracy ± 1% of full scale) 

Battery lifespan: more than 150 hours 

PO-T 

Battery charge indicator 

Battery lifespan: more than 500 hours 

Operation temperature: 0 to 50 °C 

Measurement from –1,0 to 15,0 pH 

(accuracy ± 0,1 pH) 

Pocket instrument which allows a rapid and trustable 

measurement. Supplied with crash proof box with probe 

included. 

PO-T Rx Redox range : 0 ÷ 1999 mV 

PO-T Rx Waterproof Redox range : 0 ÷ 1999 mV 

PO-T pH pH range : 0 ÷ 14,00 pH 

PO-T pH Waterproof 

PO-T pH Waterproof 

pH range : 0 ÷ 14,00 pH 

with replaceable probe pH range : 0 ÷ 14,00 pH 

PO-T CD2 Conductivity range : 0 ÷ 2 mS 

PO-T CD2 Waterproof 


Conductivity range : 0 ÷ 2 mS 

with replaceable probe Conductivity range : 0 ÷ 2 mS 

PO-T CD20 Conductivity range : 0 ÷ 20 mS 



Conductivity range : 0 ÷ 20 mS 

with replaceable probe Conductivity range : 0 ÷ 20 mS 


Series 6 

pH-ORP6 Series 

- pH measurements from 0,00 to 14,00 (accuracy ±00,1 pH) 

- Redox measurement ± 1000 mV (accuracy ± 2 mV). 

- Temperature measurement from 0,0 to 100 °C (accuracy ± 0,5 °C) 

- Automatic / manual temperature offset (0 – 100°C). 

Ox6 Series 

- Measurements 0 – 10,00, 10.0 – 100,0, 100 – 1000 ppm (accuracy ± 1% of full scale) 

- Measurements 1,00 – 10,00, 10,0 – 100,0, 100 – 200 ppt (accuracy ± 1% of full scale) 

- Temperature measurement from – 10,0 to 110,0 °C (accuracy ± 0,5 °C) 


Practical 

container 

Con6 Series 

- Measurements 0-20.00, 200.0, 2000 mS/cm (accuracy ± 1% of full scale) 

- Measurements 0-20.00, 200.0 mS/cm (accuracy ± 1% of full scale) 

- Temperature measurement from –10,0 to 110,0 °C (accuracy ± 0,5 °C) 


pH-Redox signal simulator 

- pH simulation values 1.00, 1.68, 4.01, 6.86, 7.00, 9.18, 10.01, 12.45 

(accuracy ± 0,02 pH) 

- Redox simulation values –1800, -900, -390, +390, +900, +1800 mV 

(accuracy ±1 mV) 

- Operation temperature: 0 to 40 °C 

Protective 

casing 

Waterproof 

keyboard 


C401 Portable Photometric Measuring Instrument 

- Measurement of the concentration of free Cl, total Cl, cyanic acid, and pH 

- Impermeable to water 

- Free and total Cl measurements: 0 – 1,99 and 2,0 – 6,0 ppm (accuracy ± 00,2 

or ± 0,2 ppm) 

- Cyanic acid measurement 5 – 90 ppm (accuracy ± 4 ppm) 

- pH measurement 5,9 – 8,2 (accuracy 0,1 pH) 


- Battery charge indicator 

- Battery type “AAA” (x4). 

- Battery lifespan: more than 3000 tests 

Cool Pooltester Portable Photometric Measuring Instrument 

Chlorine from 0,1 to 5.00 mg/lt 

pH from 6.8 to 8.4 

Bromine from 0,1 to 9.9 mg/lt 

Alkalinity from 10 to 500 mg/lt 

Cyanuric Acid from 0 to 200 mg/lt 

Power Supply 

1 x PP3 Battery (not included) 

Size : 17.5 x 7.5 x 4.5 cm 

Weight : 132 gr 

SP163 Cool Pooltester Cl/pH/Alk 

SP164 Cool Pooltester Cl/pH/Cyn 

SP165 Cool Pooltester Cl/pH/Br 

SP166 Cool Pooltester Br/pH/Alk 

AR 165/1 Refil for Cl/pH/Alk 

AR 165/2 Refil for Cl/pH/Cyn 

AR 165/3 Refil for Cl/pH/Br 

AR 165/4 Refil for Br/pH/Alk 

PT 164 Box of 5 sapres test tubes 

T101 portable turbidity measuring devices 

- Impermeable to water 

- Self-selection of measuring interval 0,01 – 19,99, 20,0 – 99,9, 100 – 1000 NTU 

(accuracy ± 2% of the reading) 


- Battery charge indicator 

- Battery type “AAA” (x4). 

- Battery lifespan: more than 1200 tests 

- Light lifespan: more than 1,000,000 tests 

Batteries 

easy to 

replace 

Waterproof 

keyboard 

Practical 

container 


kontrol40 

Multilinguage menu 

Password protectionof menu setting 

Relay status indicator 

Manual control of all instrument 

functions 

Measurement probes quality control 

OFA (Over Feed Alarm): timed excess 

dosage alarm 

Panel-mounting version 

(96x96x92 mm) 

kontrol500 

Wall - or pole-mounting version with 

IP65 degree protection (144x144 mm) 

Alarm band can be set with min. and 

max. values 

Proportional dosing through Set Points 

Galvanic isolation for output 4 to 

20 mA 

Power supply 100÷240 Vac 

kontrol PR40 

Range 0÷14 pH or ±1500 mV 

kontrol CD40 

Range 0÷50000 µS 

DIN Rail Version 

(6 EN50022 modules) 

Graphic Display 

128x64 pixel 

PID control functions 

Serial communication port 

by RS485 

Quality probes of 

measurement probes 

Power supply 100÷240 Vac 

Mounted on a pole with a 

bracket and shelter 

(accessories) 

Panel-mounting version (96x96 mm) 

Wall-mounting version with IP65 

degree protection (144x144x90 mm) 

Panel-mounting version 

(48x96x100 mm) 

kontrolPR500 

Range 0÷14 pH or ±1500 mV 

kontrolCD500 

Range 0÷20000 µS 

kontrolCL500 

Range 0÷20 ppm Free Chlorine 

kontrolOX500 

Range 0÷20 ppm Oxygen 

kontrolTB500 

Range 0÷100 FTU / NTU [Turbidity] 


PROBES 

Electrode 

type 

Standard Boot BNC 

Measurement 

range 

Minimum 

conductivity 

Maximum 

temperature 

pH 

SPH-1-S-6 0... 14 pH 50 µS 60 °C 7 bar 1 Standard GEL Cable 6m+BNC Standard Ø 12 Epoxy 12x120 

SPH-1-S-1,5 0... 14 pH 50 µS 60 °C 7 bar 1 Standard GEL Cable 1,5m+BNC Standard Ø 12 Epoxy 12x120 

SPH-3-WW 2... 14 pH 5 µS 80 °C 6 bar Open hole GEL S7 PG 13,5 Glass 12x120 

Redox 

SRH-1PT 6 ±2000 mV - 60 °C 7 bar 1 Standard GEL Cable 6m+BNC Standard Ø 12 Epoxy 12x120 

SRH-1PT 1,5 ±2000 mV - 60 °C 7 bar 1 Standard GEL Cable 1,5m+BNC Standard Ø 12 Epoxy 12x120 

SRH-3-PT ±1000 mV - 80 °C 6 bar Open hole GEL S7 PG 13,5 Glass 12x120 

PT-100 temperature sensor 

Max. 

pressure 

Porous 

septum 

PT-100-V 0- 100 °C 2 Bar Glass casing 12 mm Ø length 120 mm 3-core cable 5 m long 

PT-100-NUT 0- 100 °C 6 Bar PVC casing 1/2 gas 2-core cable 1 m long 

AISI 304 Electrode 

pH Redox 

Elimination of parasitic currents. Mechanical connection Standard Ø 12 mm 

22 water & industry > dosing systems for swimming pools 

Reference 

Connection 

Standard Boot BNC 

Process assembly 

PT-100-V PT-100-NUT 

Casing

CABLES 

Cables for connecting electrodes to the S7 head 

CE-5-B screened cable with S7 and BNC soldered connectors, 5 m long 

CE-10-B screened cable with S7 and BNC soldered connectors, 10 m long 

ELECTRODE HOLDER 

Model Description N° Electrodes Temp. max Maximum Time 

PSS 7 - SIngle transparent glass 1 40 °C 6 bar 

PSS 7 transparent glass 3 40 °C 6 bar 

Model Description Max. Temperature Max. pressure Process connection Electrode connection 

PSS 3 PVC 60 °C 7 bar 1/2” G.M. Ø 12 mm 

PSS-PG PVC 60 °C 7 bar 1/2” G.M. P.G. 13,5 mm 

BUFFER SOLUTIONS 

Model Value Quantity 

KIT ST 4-7 pH, 465 mV 20 °C 90 ml 

ST-PH-4 4,00 pH 20 °C 250 ml 

ST-PH-7 7,00 pH 20 °C 250 ml 

ST-RX-465 465 mV 25 °C 250 ml 

KIT 

PSS7 

Single 

innovation > technology > future 23 

PSS7 

PSS3 PSS PG 

250 ml

invikta 

Wall mounting: 

directly on the 

wall 

fixing bracket kit 

Pump casing 

with manual 

priming valve 

General 

Features 

The outer PP plastic 

container has an IP65 

protection level and 

protects the unit from 

water spray and can 

withstand aggressive 

environments 

Power Supply 

100÷240 Vac 

External trigger 

24÷240 Vac 

It is made up of a simple, reliable, electromagnetic dosing pump, based on a 

microprocessor. 

Standard power supply 

90÷265 Vac 

(20÷90 Vac upon request) 

The pump has an input for 

the level probe 

Manual regulation of the 

flow rate from 0 (pump 

stopped) to 100% of 

maximum flow rate 

Operating status LED: 

Flashes when the pump is 

operating 

Flashes slowly when the 

pump is stopped 

Flashes quickly when a 

level alarm is activated 

dynamik time Peristaltic pump with timed dosing by external trigger. 

Adjustable 

flow rate and 

dosing time 

by keyboard 

IP65 Enclosure 

Wall mounting 

bracket 

Digital Display 

Priming (MOM), Run (ON), 

Stand-by (OFF) mode 

selectable by switch 

Switch for Priming, Run 

and Stand-by mode 

selection 

Flow rate 4, 2 and 1 lt/h 

@ 1,5 Bar (selectable by 

programming menu) 

Transaxle 

Technology 

Easy and safe 

inlet-outlet tubing 

connection 

External trigger 

input 

Power supply 

100÷240 Vac 


PERISTALTIC Pump 

Peristaltic pump technology means low maintenance, low 

noise output, and that no valves are used at all. 

MODELS: 

PE-1,5.1,5 1,5 lt/h (constant flow rate) at 1,5 max 

PE-1,5.05 5 lt/h (constant flow rate) at 1,5 max 

PR4 4 lt/h (adjustable flow rate) at 1,5 bar 

tekna EVO 

Solenoid Dosing Pumps 

4 models that cover 1 to 60 lt/h with an output pressure up 

to 20 Bar 

Full chemical compatibility 

Reduced maintenance 

Dosing performance always stable 

Version available: 

- Analogue and digital interface. 

- Constant Flow Rate with timer control or adjustable by knob 

- Proportional Flow Rate according to an external analogue or 

digital pulse signal 

- Many additional functions 

SPRING Series 

Electromechanical Dosing Pumps 

Dosing pumps with spring return mechanism. 

Version with plunging piston or mechanical membrane. 

MODELS: 

Serie PS1: 

max flow rate 304 lt/h max pressure 20 bar 

Serie PS2 


Serie MS1 


Serie MS0 



KOMPACT AXL-DPG 

Panels with 2 dosing pumps and electric wiring box, particularly 

suitable for installing with Kontrol series panels. 

Kompact AXL 

- N° 2 Tekna AXL analogue dosing pumps 

for continuous operation (available in 

602 or 902 versions) 

- Electric wiring box 

Kompact DPG 

- N° 2 Tekna DPG digital dosing pumps 

for proportional operation (available 

in 602 or 902 versions) 

- Electric wiring box 

Easy 

to assemble 

FILTERS 

Compatible 

with chemical 

products 

Housings and filter cartridges 

PUMP PUMP ALARM POWER 

CL PH SUPPLY 

RELE' RELE' 

N N 

F F 

- 

+ + 

+ + 

FREQ. mA - FREQ. mA POWER 

INPUT PUMP 1 

INPUT PUMP 2 

SUPPLY 

- + - + 

Easy 

to assemble 

HOUSINGS FOR FILTER CARTRIDGES MINOR 5” SERIES 

Operating conditions 

Maximum pressure: 8 bar 

Minimum temperature: 2 °C 

Maximum temperature: 40 °C 

Characteristics 

Non-toxic materials 

Head: Loaded polypropylene 

IN/OUT threaded inserts: Brass 

Cup: SAN and White loaded polypropylene 

O-Ring: NBR 

Flow rate: 120 lt/min 

Lifetime test: 200,000 cycles from 0 to 10 bar 

FILTER CARTRIDGES RLN SERIES 

Average lifetime: Variable, maximum 24 months 

Maintenance: Wash every 3 months 

Operating conditions 

Maximum temperature: 40 °C 

Characteristics 

Non-toxic materials 

Filtering material: Nylon (polyamide) 

External support: Polypropylene 

Caps: Polypropylene 

Seals: EPDM 

mA 

mA 


STIRRERS 

Electrical stirrers with three-phase motor (singlephase 

upon request), and fixing flange. 

Specifically made for fitting on SER series tanks. 

Materials in contact with the liquid: 

non-toxic PVC or AISI 316. Speed:1400 or 70 rpm. 

TANKS 

Slow 70 rpm Fast 1400 rpm 

600 mm 

800 mm 

900 mm 

1100 mm 

Specifically designed for assembling along with both 

electromechanical and electromagnetic dosing units 

with stirrers and dosing pumps. Made using a centrifugal 

purpose, the mechanical strength of these tanks is 

guaranteed. Made of food-grade polyethylene, these 

tanks are compatible with almost all chemical products 

used in dosing systems. 

Model Height (cm) Diameter (cm) 

50 45,5 40 

100 64 46 

250 87 59.5 

300 95 67 

500 118,5 76 

1000 122 108,5 

SUCTION PLUNGERS 

Designed and built for easy, immediate use, they 

ensure regular operation of the..They are all fitted with 

foot filter and are available inversions that have builtin 

level probe to indicate when the chemical product is 

finished in order to prevent vacuum dosing that would 

damage the pump. 

Heights (mm) Model tanks 

450 Ser50 

650 Ser100 

900 Ser250 

1050 Ser300 

1250 Ser500/1000 


SEKO Asia Pacific SINGAPORE SEKO China CHINA SEKO do Brasil BRAZIL SEKO Dosing 

Systems USA SEKO Deutschland GERMANY SEKO France FRANCE SEKO Iberica SPAIN 

SEKO Italia ITALY OOO SEKO RUSSIA SEKO Northern Europe DENMARK SEKO SIETA 

ROMANIA SEKO Southern Africa SOUTH AFRICA SEKO UK UNITED KINGDOM 

www.seko.com 

BRO SWPUK 081 

The technical data may be modified without notice. The drawings and images are only indicative

dosing systems for swimming pools - Seko

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