Ezetrol Touch Analyzer-Controller

Summary

Product identification

The Ezetrol® Touch controller is a disinfection controller designed to measure and control free chlorine concentration, pH, and temperature in pool water. Optional accessories allow for ORP and conductivity measurements.

Design and Function

The system features a pressurized flow cell accommodating up to four sensors. It includes an integrated "Multi-Sensor" for sample water flow and temperature monitoring, and a large water ground to mitigate electrical noise. A flow control valve maintains a constant sample water flow. Mechanical cleaning of the free chlorine sensor is achieved through quartz grit. An LED light stick in the flow cell indicates water chemistry status.

The controller utilizes a 4.3-inch color touchscreen display. Standard features include various controller outputs, alarm contacts, and five digital inputs. Optional features include four 0/4 – 20 mA outputs. Six freely assignable relay contacts can be configured as chemical feed or alarm outputs.

Safety functions include:

• Alarm and chemical feed interruption triggered by the sample water flow switch.
• Alarm and chemical feed interruption in case of circulation pump failure.
• Shutdown in case of supply-tank-empty alarm.
• Dosing time monitoring and dosing time delay.

Measurement Inputs

Free chlorine

• Sensor type: Rugged 3-electrode chlorine sensor with sealed electrolyte KCl supply. Potentiostatic 3-electrode amperometric design.
• Measuring range: 0 to max 10 mg/l, with adjustable ranges of 1, 2, 3, 5, and 10 mg/l.
• Resolution: 0.01 mg/l
• Temperature compensation: 0 – 50 °C
• Connection: Sensor plug connection IP 67

pH value

• Measuring range: 0 to 14 pH
• Start of range: Adjustable from 0 to 6 pH
• End of range: Adjustable from 8 to 14 pH
• Scale: Freely selectable in 1 pH increments
• Resolution: 0.01 pH
• Temperature compensation: 0 – 50 °C
• Connection: Sensor plug connection IP 67

ORP (optional)

• Measuring range: 0 to 1000 mV
• Start of range: 0 to 400 mV
• End of range: 500 to 1000 mV
• Scale: Freely selectable in 100 mV steps
• Resolution: 1 mV
• Connection: Sensor plug connection IP 67

Conductivity (optional)

• Sensor type: Robust 4-electrode measuring cell with integrated temperature sensor.
• Measuring ranges: 500/1000/2500 µS/cm or 5.00/10.0/20.0/50.0/100.0/200.0/300 mS/cm
• Temperature compensation: 0 - 50 °C
• Connection: Plug connection

Multi-sensor

• Measures sample water temperature using a Pt 1000 sensor.
• Includes a large stainless steel water ground for electrical noise protection.

Display

• 4.3-inch capacitive color touchscreen with backlight.

Digital Inputs

• 1 x assigned to sample water flow switch.
• 4 x freely selectable (e.g., for chemical tank empty, external stop).

Output Contacts

• 6 x freely selectable alarm contacts/general alarm signal, and controller outputs for free chlorine, ORP, or pH.
• Relay status is shown on the operating display.
• Rating: max. 3.15 A/250 V AC, 0.2 A/220 V DC

Analog Outputs (optional)

• 4 x 0/4 – 20 mA, freely configurable.
• Load: ≤ 500 Ohm
• Accuracy: < 0.5 % FS
• Isolation: Galvanically isolated up to 50 V relative to earth

Electrical

• Power supply: 100 - 240 V AC ± 10 %, 50 – 60 Hz

Operating Limits

• Ambient temperature: 0 – 50 °C

Mechanical / Hydraulic

Enclosure

• Rating: IP 66

Dimensions (Controller Module)

• W x H x D: 320 x 311 x 135 mm (12.5 x 12 x 5 inches)

Weight (Controller Module)

• Approximately 5 kg (11 lbs) including packing.

Flow Cell Module

• Flow control valve:
  • Controlled sample water flow: 33 l/h
  • Control range: 0.2 – 3.0 bar at valve inlet (3 – 43 psig)
  • Maximum back pressure: Up to 1.5 bar at valve outlet (0 to 22 psig)
  • Maximum sample water temperature: 50 °C
  • LED alert: White, yellow, and red.
• Additional features:
  • Isolating valves at sample water inlet and outlet.
  • Ball check valve at sample water inlet.
  • Simple cell drain assembly.
  • Integrated fitting for sensor during calibration.
• Sample water connections: PVC hose 6 x 3 mm or PE hose 6 x 1 mm; Tubing connectors on 1/2 ” union.
• Weight (Flow Cell Module): Approximately 2.5 kg (5.5 lbs) including packing.
• Dimensions (Flow Cell Module): 253 x 375 x 163 mm (10 x 15 x 6 inches)

Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror