Electrochemical ozone sensor OZ1.2

for water treatmentfor process controlanalog

Overview
The German-made OZ1.2 ozone disinfectant sensor employs a membrane-covered amperometric 2-electrode system to determine ozone concentration in surfactant-free waters (e.g. swimming-pool water, drinking water, service water, process water). Key attributes include automatic temperature compensation, monthly slope drift <1%, approximately 15 s T90 response, and flexible mounting/configuration options. The sensor is not intended to detect the absolute absence of ozone.

Special features

• Membrane-covered amperometric 2-electrode measurement principle
• Short response time (T90 ≈ 15 s)
• Automatic temperature compensation via integrated temperature sensor
• Low monthly slope drift (<1%)

Applications

• Swimming-pool water
• Drinking water
• Service and process water
• Cooling water

Ambient and operating conditions

• No surfactants permitted in the measuring water
• Measuring water temperature: max. 45 °C (no ice crystals in the measuring water)
• Ambient temperature: 0 … +55 °C
• Max. allowed working pressure: typically up to 1 bar (see operation notes regarding retaining ring and pressure impulses)

Technical specification (table)

• Measurement parameter: Ozone
• Measuring ranges / Resolution: 0.005 … 2.000 ppm (0.001 ppm); 0.03 … 20.00 ppm (0.01 ppm); other selectable ranges available
• Response time: T90 ≈ 15 seconds
• Measuring water temperature: 0 … +45 °C (no ice crystals)
• Ambient temperature: 0 … +55 °C
• Temperature compensation: automatic, integrated temperature sensor (avoid sudden temperature changes)
• Max. allowed working pressure: depending on retaining ring and installation (see operation notes)
• Flow rate (face velocity): approx. 15–30 L/h in flow cell (small flow dependence)
• pH range: 2–11
• Run-in time: first start-up approx. 1 h
• Zero point adjustment: not necessary
• Protection class examples: IP68 (5‑pole M12 plug-on flange) / IP65 (2‑pole terminal with mA hood)
• Materials: semipermeable membrane, PVC‑U, ABS

Notes

• Not suitable for detecting the absolute absence of ozone
• Avoid sudden temperature changes to preserve measurement accuracy

Technical characteristics / specifications

• Model: OZ1.2
• Measurement: Ozone (amperometric, membrane-covered 2‑electrode)
• Typical measuring ranges: 0.005–2.000 ppm (0.001 ppm resolution); up to 20.00 ppm (0.01 ppm resolution) depending on configuration
• Response time: T90 ≈ 15 s
• Automatic temperature compensation (integrated temperature sensor)
• Measuring water temp limit: 0–45 °C; Ambient temp: 0–55 °C
• pH range: 2–11
• Flow rate in flow cell: approx. 15–30 L/h
• Protection class examples: IP68 (M12 plug flange) / IP65 (2‑pole terminal with mA hood)
• Materials: semipermeable membrane, PVC‑U, ABS
• Run-in time: ≈1 hour; Zero point adjustment not required