MP5™ Online Chlorine Analyzer for Flow Cell Deployment​


The Halogen MP5™ low-flange housing (D-H1LF-P) allows the sensor to be used with a flow-cell (with or without a flat base) providing continuous monitoring with a fast cycle time. The MP5™ is unaffected by flow or pressure so it can be deployed without any flow control plumbing.

The MP5™ is the only chlorine analyzer certified for NSF-61 use in drinking water with no required waste stream.  The small footprint and multiparameter capability make this deployment a good choice for freeing up space, especially when combined with the Halogen Panel Mount Solution (MKIT-1001).

Unique Features

  • 5 Parameters in a single online near-time analyzer
    • Free Chlorine
    • pH
    • Temperature
    • Conductivity
    • Rapid Response ORP™*
  • Self-cleaning & low maintenance
  • No membranes or electrolyte
  • NSF-61: No waste stream required
  • Factory-calibrated, drift resistant
  • Unaffected by flow or pressure. No flow-control plumbing needed.
  • Available display equipped with (4) 20mA and MODBUS RTU. Other communication protocols are available upon request.
  • 24 VDC or 90 to 240 VAC operation

Why Use the MP5™ in a Flow-cell Deployment?

Flow Independent Measurement 

The MP5™ online chlorine monitor is unaffected by flow or pressure so there’s no need for flow-control valves or plumbing. The integrated pump creates a fixed velocity across the electrodes, which improves sensitivity while lowering the Signal-to-Noise Ratio.

No Waste Stream

Approved for NSF-61 usage, the water analyzed by MP5™ can be put back into the water supply.

Easy Monitoring

A local display provides onsite viewing of parameters for up to 5 separate MP5™ units.

SensiCLĒNE™ Patented Self-Cleaning Technology

A patented electrochemical cleaning method called SensiCLĒNE™  resists polarization and adsorption of organics.  Motivated by the flow from the pump, captive polymer cleaning beads continuously abrade the sensor. This keeps the electrode surfaces, including the pH sensor, free from buildup, scaling, and biofouling. Solid metal electrodes last the life of the system. 

This self-cleaning technology means the MP5™ holds calibration much longer than any competing sensor, whether amperometric or DPD. 

Ease of Service

The annual wear-parts maintenance replaces the SensiCLĒNE™ beads, retaining cap and two screws. The process takes only minutes and does not affect calibration. 

Manuals for Drinking Water & Wastewater Applications

Operating Manual

MP5 Online Chlorine Analyzer Manual (2024.03.27-v4.01) for use in Drinking Water and Wastewater applications.

Installation Manual

Installation Manual for MP5™ D-H1WT-P chlorine analyzer in Wet Tap deployment with remover tool  

Installation Manual

Download the Wear Parts Replacement manual for the SensiCLĒNE™ self-cleaning technology in MP5™ Analyzers

Monitor 5 parameters directly in drinking water pipes at flows from 0- 4m/s & up to 10 bar/150 psi. A retractor/removal tool is available (pictured at left). Wet Tap (or Hot Tap) housing can be deployed as a retractable NSF-61 in-pipe Chlorine analyzer.

The mid-flange housing (H1MF-P) and the associated 2″ adapter sleeve and collar kit make for an easy sidestream NSF-61 PVC Tee deploymentThis configuration fits an OTS 2” PVC Tee and requires a  threaded adapter (PT-01). 

The low-flange model (H1LF-P) adapts for side-stream monitoring to replace an existing control-board-mounted sensor or can be submerged in a clearwell. Submersible deployments use a standard 1” PVC Boom Mount. Flow Cell optional. 


Kit with flow-cell deployment (H1LF-P) and display controller  along with a wall mounting plate,  provides a drop-in upfit sensor replacement.

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Battery power and remote telemetry for an MP5™ deployment. Use for outer grid monitoring, dead-ends, or other remote implementations.

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Leverage the dependability and low maintenance of the MP5™ for remote tank monitoring with battery power and remote telemetry.

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Retractable remover kit for MP5™ wet-tap analyzer (H1WT-P) in water pipes allows for maintenance without interrupting flows.

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This deployment uses a water-proofed low-flange MP5™ (H1LF-P), a sourced boom and harness, or can simply be placed in a tank or trough.

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Combine a mid-flange MP5™ (H1MF-P) with an adapter sleeve—in PVC or Stainless steel—sized for deployments in a 2″ PVC tee.

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Fits low-flange MP5™ (H1LF-P) and adapts for side stream and control board usage based on which flow cell type  is ordered. 

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Both 24V DC (D1) and 120-240V AC (CN-01) versions feature (4) 4-20 Ma analog outputs, and an M-12 Connector with stress relief. 

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Have Questions? Get Answers.

If the technologies and benefits listed above raise any questions, you may find the answer you’re looking for in the FAQ or Technologies pages. 

Our contact page also allows you to reach out with a specific question and we’ll get back to you as quickly as possible.