DULCOTEST PER

Summary

Product identification

• Brand: DULCOTEST®
• Product line: Prominent Sensors
• Sensor Types: PER1, PEROX, PEROX H 3E
• Measured variable: Hydrogen peroxide (H₂O₂)

General Benefits

• Precise, real-time amperometric measurement for efficient process control with short response times.
• Amperometric measurement is unaffected by turbidity or discolouration.
• Stable zero point, indicating no drift.
• Temperature compensation eliminates faults caused by temperature influence.
• Diaphragm-covered electrodes reduce dependence on flow and cross-sensitivities.
• Short run-in period for quick commissioning.

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Hydrogen Peroxide Sensor PER1

Overview

Sensor for measuring hydrogen peroxide in chemically contaminated and polluted water. Available with measuring ranges for medium to very high concentrations.

Operating limits

• Operating temperature: 0 – 50 °C
• Admissible temperature fluctuation: < 0.3 °C/min
• Max. pressure: 1.0 bar
• pH range: 1.0 … 11.0
• Min. conductivity: 0.05 mS/cm

Feed water characteristics

• Resistance to: Salts, acids, alkalis, surfactants, dirt films, but not hydrogen sulphide (H₂S).

Measuring ranges and output

• Measuring ranges: 20 ppm to 100,000 ppm (10%). Specific orderable range: 20.0…2,000.0 mg/l. Measuring ranges up to 100,000 ppm available on request.
• Output signal: 4…20 mA, temperature-compensated, uncalibrated, not electrically isolated.
• Supply voltage: 16...24 V DC (two-wire system).

Technical specifications

• Cross sensitivity: Ozone, chlorine dioxide, peracetic acid, chlorine, bromine.
• Response time sensor t90: approx. 480 sec
• Intake flow: 20…100 l/h
• Selectivity: Hydrogen peroxide selective towards sulphite.
• Measuring principle, technology: Amperometric, 2 electrodes, membrane-covered.

Installation

• Installation: Bypass: open outlet or return of the sample water into the process line.
• Sensor fitting: DGM, DLG III.
• Measuring and control equipment: D1C.

Typical applications

Cooling and waste water treatment, plant irrigation water, bleaching processes, H₂O₂ product qualification, water with higher H₂O₂ concentrations of up to 100,000 ppm.

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Hydrogen Peroxide Sensor PEROX

Overview

Sensor for measuring hydrogen peroxide without cross-sensitivity to chlorine. Suitable for fast control processes even with temporary absence of hydrogen peroxide in clear water.

Operating limits

• Operating temperature: 0 … 40 °C
• Admissible temperature fluctuation: < 1 °K/min (with external T measurement).
• Max. pressure: 2.0 bar
• pH range: 2.5 … 10.0

Feed water characteristics

• Resistance to: Salts, acids, lyes, surfactants.

Measuring ranges and output

• Measuring range: 1...20, 10...200, 100...2000 mg/l, switchable.
• Output signal: 4…20 mA, not temperature-compensated, uncalibrated, not electrically isolated.
• Supply voltage: 16...24 V DC (3-wire system).

Technical specifications

• Response time sensor t90: approx. 20 sec.
• Min. conductivity:
  • With 20 mg/l range: 5 µS/cm
  • With 200 mg/l range: 200 µS/cm
  • Up to 1,000 mg/l: 500 µS/cm
  • Up to 2,000 mg/l: 1 mS/cm
• Intake flow: 30…60 l/h
• Selectivity: Hydrogen peroxide selective towards free chlorine.
• Measuring principle, technology: Amperometric, 2 pulsing electrodes, diaphragm-covered.

Installation

• Installation: Bypass: open outlet or return of the sample water into the process line.
• Sensor fitting: DGM, DLG III.
• Measuring and control equipment: DAC.

Typical applications

Exhaust air scrubbers, treatment of swimming pool water, potable water, controls requiring very short response times.

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PEROX H 3E Sensor

Overview

Sensor type PEROX H 3E with integrated transducer and 3-electrode system. Offers the benefits of the PEROX type and can be used in moderately contaminated water, providing reliable measurement above 0.2 ppm H₂O₂.

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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