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Online Peracetic Acid PAA Analyzer with P9.3 sensor upto 60℃ for Electroplating plants
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Online Peracetic Acid PAA Analyzer with P9.3 sensor upto 60℃ for Electroplating plants

The analyzer consists of a LCD display instrument and a Germany made P9.3 PAA sensor adopting a membrane-covered amperometric 2-electrode system to accurately measure PAA concentration in aqueous solutions, delivering temperature-compensated analog signals and Modbus RTU digital signals, supporting calibration via downstream devices and direct connection to dedicated transmitters with one-key calibration; it features high-temperature tolerance (up to 60℃ water temperature), chemical/surfactant-resistant elastomer membrane, acid conductivity tolerance, <2%~3% accuracy (for 2000 mg/L range), T90 response time 45s~3.5min, flexible connectivity and IP65/IP68 protection, is EMC/RoHS compliant, requires minimal maintenance, and is ideal for water treatment in electroplating, pharmaceutical, food and beverage, dairy, and chemical industries (e.g., bottle washing machines, CIP plants).
Model W761-DP9.3
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Application Fields

Electroplating plants, pharmaceutical industry, food and beverage industry, dairy factories, chemical industry.

Product Features

  • Dual-electrode measurement system

  • Suitable for high water temperatures (up to 60℃)

  • Equipped with chemical and surfactant-resistant membrane structure

  • Simple calibration

  • Integrated temperature compensation function

  • Tolerates acidic conductivity

Technical Data Sheet

ParameterSpecifications
Measured ParameterPeracetic Acid (PAA)
Applicable ScopeAll types of water treatment (e.g., bottle washing machines, CIP equipment, rinsers); Tolerates control acids and surfactants
Measuring PrincipleMembrane-covered amperometric dual-electrode measurement system
Membrane TypeHydrophilic membrane
Measuring Cable Connection2-pole terminal connection (2×1mm²); 5-pole M12 aviation connector; 5-pole M12 aviation connector
Supply Voltage (UB)DC 12~30V (electrically isolated required); DC 9~30V (electrically isolated from the sensor)
Electromagnetic Compatibility (EMC)ᵃEmission: Class B; Immunity: Meets industrial requirements
Output Signal4~20 mA/0~±2V; Modbus RTU
Load/Current Consumption≤(UB-7.5V)÷0.02 A; Approx. 20-56 mA
Run-in TimeMeasuring range 200 mg/L: Approx. 3 hours for first use; Measuring range 2000 mg/L: Approx. 1 hour for first use; Measuring range 20000 mg/L: Approx. 30 minutes for first use
Flow Rate15~30 L/H (in flow cell)
Measuring Range0.5~200 mg/L (ppm); 5~2000 mg/L (ppm); 0.005~2%; 0.5~200 mg/L (ppm); 5~2000 mg/L (ppm); 0.005~2%
Resolution0.1 mg/L (for 200 mg/L range); 1 mg/L (for 2000 mg/L range); 0.001% (for 2% range); 0.1 mg/L (for 200 mg/L range); 1 mg/L (for 2000 mg/L range); 0.001% (for 2% range)
Accuracyᵇ (for 2000 mg/L range)<2% at 400 mg/L; <3% at 1600 mg/L
Response Time (T90)Approx. 3.5 minutes at 10 °C; Approx. 45 seconds at 45 °C
Operating TemperatureWater temperature: 0~60℃ᶜ; Ambient temperature: 0~55℃
Temperature CompensationAutomatic via integrated temperature sensor; Sudden temperature changes must be avoided
Zero Point CalibrationNot required
Slope CalibrationDetermined by chemical analysis method
pH Operating RangepH 1~8
Influence of Acidic Conductivity1% sulfuric acid, 1% nitric acid, or 1% phosphoric acid in water has no impact on measurement results
InterferencesO3: Significant increase in measured value; ClO2: Increase in measured value; H2O2: No influence
Pressure ResistanceᵈPabs max. 2 bar; Prel max. 1 bar
MaterialsElastomer membrane, PEEK, stainless steel 1.4571
DimensionsDiameter 25 mm, length 190 mm or 220 mm (housing with membrane cap, length depends on connection type); Diameter 25 mm, length 205 mm (housing with membrane cap)
WeightApprox. 125 g


FAQ – Frequently Asked Questions


1. Where are your products manufactured?

Our products are proudly designed and manufactured in China, following international quality standards and certified processes.


2. Can you provide OEM/ODM services for international clients?

Yes, we offer customized solutions and private labeling to meet your brand’s needs worldwide.


3. Are your products compliant with international safety and quality standards?

Absolutely. Our products are tested to meet CE, RoHS, and other international certifications.


4. How do you handle shipping and delivery for overseas orders?

We cooperate with major international couriers to ensure fast and reliable delivery to your location.


5. Can I get product samples before placing a large order?

Yes, we provide samples so you can evaluate product quality before committing to bulk orders.


6. What is the typical lead time for production and delivery?

For standard products, we usually ship within 5–7 days after order confirmation. Customized products may take slightly longer.


7. How do you support clients after the purchase?

We offer 24/7 technical support, product guidance, and warranty service to ensure smooth operation.


8. Do you provide support for international clients after purchase?

Yes, we offer remote technical assistance, manuals in English, and prompt solutions to any issues, ensuring smooth use worldwide.


9. How can I place an order if I am located overseas?

You can contact our sales team directly via email or website inquiry. We provide professional guidance throughout the ordering process.


10. Why should I choose your company over other suppliers in China?

We combine over 30 years of manufacturing experience, advanced technology, strict quality control,

and global customer service to deliver reliable, high-quality solutions.


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