Connect MP5 or MP6 to a clear local display, configured outputs and site records.
D20 is the Halogen controller for local readings, sensor setup and connections to your monitoring system. Its colour display brings the configured residual and supporting water-quality information to the installation.
Use it with the blue MP5 or black MP6. The guides describe two sensor Modbus connections; PMA will confirm the supported combination, firmware and power loading for your installation.
A 3.5-inch TFT display and menu-driven sensor configuration, with access to calibration and operating settings.
Four configurable 0–20 mA or 4–20 mA analogue outputs, three SPDT relays and standard Modbus RTU.
SD-card data storage and software transfer support. Define the channels, timestamps and record retrieval workflow.
The sensor measures the water. The controller displays and communicates the configured readings. The flow cell or mounting arrangement establishes which water reaches the sensing end.
Agree inlet and outlet routing, isolation, operating pressure, power, earthing, signal cabling and maintenance access together. The illustrated flow cell takes water in below and releases it above to let air leave.
Suitable in-pipe and immersion variants require their own installation assessment and accessories.
Explore D20 connections and plan how the controller will fit your monitoring system.
IP65 / NEMA 4X plastic enclosure; 160 × 160 × 101.6 mm. Choose a protected, accessible site position.
The documented supply is 85–240 V AC ±10%, 50/60 Hz. Sensor power and controller loading must suit the configured system.
Two sensor Modbus connections, four analogue outputs, three relays and Modbus RTU. Agree the mapping before commissioning.
Controller temperature limits depend on connected sensor load. Use the guide’s derating requirements rather than a single unconditional maximum.
Modbus RTU and analogue signals can connect the monitoring point to a suitable site system. Confirm addressing, scaling, status handling, loss-of-signal behaviour and who maintains the records.
Phone-app and remote access require a compatible communications arrangement. PMA will review the controller interface, network hardware and access requirements with you.
Choose the sensor for your water chemistry, then connect it to a controller and installation that suit the site.
The blue self-cleaning sensor for free-chlorine measurement, with supporting water-quality information.
The black sensor for monochloramine and free-chlorine measurement in suitable chloraminated water.
A colour display, configuration, analogue outputs, alarms and Modbus RTU connection for the monitoring system.
Read the manufacturer product guides for installation, operation, calibration and model-specific limits.
The supplied MP5 guide uses the MP5A model designation. PMA presents this model as MP5.
Operating modes, reference calibration, installation requirements and technical specifications.
The supplied D20 specification describes an AC mains supply. The sensors use 24 V DC. A sensor-only or alternative controller arrangement needs a separate power and integration review.
Configure alarms around the site’s documented operating response, including signal quality and communication loss. The controller alone does not establish a complete protection function.
PMA connects the measurement, installation and operating team. We help you review the application, select suitable instrumentation and plan commissioning, training and ongoing service.
Speak to the PMA team about your instruments, reagents or service requirements. Tell us what you need, and we’ll help you find the right next step.
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