MP-HOT Hot Water Chlorine Analyzer
24-hour Legionella compliance monitoring directly in building hot water loops. Measures chlorine, pH, conductivity, and temperature — all in-pipe with no waste stream.
NSF-61
Meets ASHRAE Standard 188, CDC guidelines, and New Jersey SB2188 requirements for Legionella water management plans. 24-hour continuous monitoring replaces manual grab samples.
Key Benefits
Direct In-Pipe (NSF-61)
Install directly into hot water return loops. No bypass panels, no sample lines, no floor drains required.
No Waste Stream
Eliminates 70,000 gallons of wasted water per year. Saves $490 in water costs and $950 in energy costs annually.
Monochloramine Option
Available with monochloramine measurement for facilities using chloramine-based disinfection systems.
4 ASHRAE/CDC Parameters
Measures all parameters required by ASHRAE 188 and CDC water management plans in a single probe.
24-Hour Compliance Monitoring
Continuous data replaces weekly grab samples. Captures transient events that manual testing misses 99.9% of the time.
Self-Cleaning (SensiCLENE)
Polymer bead cleaning system prevents scaling in hot water environments. 6-12 months maintenance-free operation.
Where MP-HOT is Deployed
Protecting building occupants from Legionella in the facilities that need it most.
Hospitals & Healthcare Facilities
Protect immunocompromised patients with continuous Legionella monitoring. Meet Joint Commission and CMS requirements.
Hotels & Hospitality
Automated compliance monitoring across large plumbing systems. Reduce liability and protect guests from waterborne pathogens.
Commercial Office Buildings
Meet ASHRAE 188 water management plan requirements. Continuous verification without dedicated maintenance staff.
Trusted by Industry Leaders
Leading building water management companies rely on Halogen MP-HOT sensors for continuous Legionella compliance monitoring.
HC Info
HC Info provides building water management consulting and their LAMPS platform integrates Halogen MP-HOT sensor data into BMS and compliance monitoring systems for continuous Legionella prevention.
Phigenics — Independent Water Management
The independent leader in building water management, providing Legionella risk assessment, ASHRAE 188 compliance programs, and their patented TimeZero® validation testing — paired with Halogen MP-HOT sensors for continuous monitoring.
Technical Specifications
| Specification | Value |
|---|---|
| Measurement Range | 0 – 10 mg/L Free Chlorine |
| Accuracy | ± 5% of reading or 0.02 mg/L |
| Temperature Range | 2°C to 50°C (35.6°F to 122°F) |
| Pressure Range | 0 – 100 psi (6.9 bar) |
| Flow Range | 0.1 to 10 ft/s (flow independent) |
| pH Range | 2 – 12 pH |
| Connectivity | Bluetooth, Modbus RTU/TCP, BACnet |
| Calibration Interval | 6 Months (standard) |
| Maintenance Interval | 12 Months (wear parts swap) |
| Certifications | NSF/ANSI 61, ASHRAE 188 compliant |
Download the MP-HOT Data Sheet
Get full technical specs, wiring diagrams, compliance documentation, and dimensional drawings.
Frequently Asked Questions
What parameters does the MP-HOT measure?
The MP-HOT measures Free Chlorine, pH, Conductivity, and Temperature in a single probe — all four parameters required by ASHRAE 188 and CDC water management plans for Legionella prevention.
Is the MP-HOT NSF-61 certified for direct in-pipe installation?
Yes. The MP-HOT is NSF/ANSI 61 certified for direct installation into building hot water pipes. No bypass panel, no sample lines, and no floor drain required.
What is the maximum operating temperature?
The MP-HOT operates in water up to 60°C (140°F), making it suitable for hot water return loops where Legionella typically grows.
Does the MP-HOT meet ASHRAE Standard 188 requirements?
Yes. The MP-HOT measures all parameters specified by ASHRAE Standard 188 and CDC guidelines, providing the continuous 24-hour data the standard requires.
How often does the MP-HOT need maintenance?
The SensiCLENE self-cleaning system keeps electrodes clean automatically. Operators perform a simple wear parts swap once per year, which takes under five minutes and does not require recalibration.
Does the MP-HOT produce a waste stream?
No. Direct in-pipe installation eliminates sample lines and waste streams, saving approximately 70,000 gallons of water per year and $1,440 in combined water and energy costs annually.
Protect your building. Meet compliance requirements.
Schedule a site assessment with our Legionella monitoring specialists.