Sensors play a crucial role in your facility’s water management systems, serving as vital tools to maintain water quality and operational efficiency. When properly maintained, sensors ensure accurate monitoring and help prevent costly operational disruptions. Conversely, neglected sensors may lead to inaccurate readings, poor system control, and increased maintenance expenses.
Watertech understands the importance of sensor maintenance and offers expert guidance to keep your systems operating at peak performance.
Common Types of Water System Sensors:
- pH Sensors
- ORP (Oxidation Reduction Potential) Sensors
- Conductivity Sensors
- PTSA Sensors
When Should You Clean Your Sensors?
Establishing a regular cleaning schedule is critical. Initially, it is advisable to clean sensors two weeks after installation. Following this, perform periodic checks to evaluate how quickly fouling occurs in your specific environment, allowing you to develop an effective cleaning routine. Key indicators signaling that your sensors require cleaning include:
- Slow response times
- Inconsistent sensor readings
- Increased frequency of recalibration
- Visible residue or buildup on sensors
Effective Cleaning Procedures
Proper cleaning extends the lifespan of sensors, enhances accuracy, and prevents downtime. Always deactivate associated chemical feed pumps or valves before beginning sensor maintenance to ensure safety and avoid system interference.
Cleaning pH/ORP Sensors:
- Soft Coatings: Gently rinse with water using a squirt bottle, wiping softly with a clean, non-abrasive cloth or paper towel. Mild detergent may be used if necessary.
- Hard Coatings: Apply a chemically compatible solvent. Select the mildest solvent capable of dissolving the buildup within one to two minutes.
- Oily/Organic Coatings: Use a suitable detergent or solvent approved for the sensor’s material to safely remove buildup.
Cleaning Conductivity Sensors:
- Soft Debris: Gently scrub with a soft-bristle brush, like a toothbrush or bottle brush.
- Oil Deposits: Apply detergent or isopropyl alcohol to effectively remove oily residues.
- Calcium and Mineral Scales: Use a mild acidic solution specifically designed for scale removal. Avoid harsh abrasives and ensure thorough rinsing before reinstallation.
Cleaning PTSA Sensors:
- Initially, use a mild detergent with a soft-bristle brush to remove chemical or biological deposits. Rinse thoroughly.
- For stubborn deposits, a 10% hydrochloric acid (HCl) solution may be applied by qualified personnel. Note: HCl is hazardous and must be handled with proper precautions.
Ensuring Optimal Sensor Performance
Regular maintenance of sensors ensures reliability, reduces the risk of downtime, and helps maintain compliance with environmental and operational standards. With consistent care, sensor maintenance becomes a straightforward part of your routine.
If you have further questions or require expert support in maintaining your water treatment systems, please reach out to Watertech at info@watertechusa.com or call us directly at 414-425-3339. Our experienced Technical Engineers are ready to assist you.
Sources: Walchem, IWAKI America