MP5 Free Chlorine Sensor
Precision real-time monitoring of free chlorine and four essential water parameters in a single, self-cleaning industrial sensor package.
NSF-61
Key Features
No Reagents or Membranes
Advanced amperometric design eliminates the need for consumable chemicals or fragile membranes.
Self-Cleaning (SensiCLENE)
Integrated brush system maintains electrode cleanliness for high-precision readings in harsh environments.
Flow & Pressure Independent
Measurement accuracy remains stable across varying hydraulic conditions without pressure regulators.
NSF-61 Certified
Certified for use in drinking water applications, meeting stringent safety and toxicity standards.
5 Parameters
Full suite: Chlorine, pH, Temperature, Conductivity, and ORP in one probe.
6-Month Calibration
Engineered for long-term stability, requiring user calibration only twice per year.
Technical Specifications
| Measurement Range | 0 – 10 mg/L Free Chlorine |
| Accuracy | ± 5% of reading or 0.02 mg/L |
| Pressure Range | 0 – 100 psi (6.9 bar) |
| Flow Range | 0.1 to 10 ft/s (0.03 to 3 m/s) |
| Temperature Range | 2°C to 50°C (35.6°F to 122°F) |
| Connectivity | Bluetooth, Modbus RTU/TCP, BACnet, Wi-Fi |
| Calibration Interval | 6 Months (standard) |
| Maintenance Interval | 12 Months (cleaning brush replacement) |
| Dimensions | Diameter: 2.5", Length: 12" |
| Weight | 3.2 lbs (1.45 kg) |
Installation Options
Wet-Tap (In-Pipe)
PVC Tee (Side-Stream)
Immersion (Tank/Clearwell)
Flow Cell
Frequently Asked Questions
What is the MP5 free chlorine sensor?
The MP5 is an NSF-61 certified, reagent-free amperometric sensor that simultaneously measures Free Chlorine, pH, Conductivity, Temperature, and ORP in a single probe. It installs directly into water lines with no sample panel, no waste stream, and no membranes.
How does the MP5 work in zero-flow conditions?
The MP5 is flow-independent. Its built-in impeller creates internal circulation across the sensor, so it measures accurately in stagnant water, dead ends, storage tanks, and clearwells where conventional sensors fail.
What does the MP5 cost to operate annually?
The MP5 costs approximately $555 per year to operate, compared to $2,328 for an online DPD analyzer, $1,794 for a membrane amperometric sensor, and $1,441 for a bare electrode sensor.
How long between calibrations with the MP5?
The MP5 typically holds factory calibration for six months or more in drinking water applications. The SensiCLENE self-cleaning system prevents electrode fouling that causes drift in other sensors.
Can the MP5 install directly in a water main?
Yes. The MP5 is NSF-61 certified for direct in-pipe (wet-tap) installation. It can also mount in a PVC tee, immerse in a tank or clearwell, or install in a side-stream flow cell.
What certifications does the MP5 hold?
The MP5 is NSF/ANSI 61 certified for drinking water contact, EPA Method 334.0 compliant for regulatory reporting, and BABA (Build America, Buy America) compliant.
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