Hanna Automatic Dosing System with Internet and Flow Cell

The BL-132 Automatic Hot Tub and Pool Controller with flow cell provides an automatic solution for the measurement and control of free chlorine and pH in hot tubs, spas and swimming pools. This controller features a high level of customisability to adapt dosing to your requirements and includes cloud connectivity via the Hanna Cloud app. Built-in dosing pumps with proportional band and adjustable flow.

Two built-in peristaltic dosing pumps are included with the BL-132. These pumps have proportional control functionality, enabling the dosing frequency to be adjusted to the size of the body of water for effective maintenance of the pH and ORP set point. A full-size pool can use a smaller proportional band, such 0.1 pH, for higher frequency dosing, while a controller installed on a hot tub can be configured with a larger proportional band, such as 1.0 pH, to prevent larger swings in water chemistry.

Adjustable flow rate allows for further adaption on the BL-131, with a range from 0.5 to 3.5L/h. Adjustable flow enables control over the amount of chemical that is dosed at one time, reducing the possibility of significant changes in ORP or pH.

Connect with Hanna Cloud

Hanna Cloud is fully compatible with the BL-132 pool controller, providing cloud connectivity via a web-based application. Measurements and data storage are easily accessed directly from a tablet, phone or PC, with the ability to store information from multiple devices in a single account.

Measurements, history, device settings, alarms and notifications are available through a dashboard, providing information about the BL-132 and any other connected instruments at a glance. This up-to-date information allows you to keep track anywhere without the need to connect physically to the controller.

Alarm and notification system

A comprehensive notification and alarm system is included with the BL-132 pool controller. This includes a multicoloured LED indicator system for dosing, meter status and service, providing live feedback. A fully programmable alarm system allows the setting of both high and low levels for pH and ORP. If the water chemistry exceeds these limits, dosing stops, protecting against overdosing.

A temperature sensor is also included with the BL-132 probe, which allows for temperature alarms. This alarm functionality is valuable for outdoor hot tubs and pools, where the controller can provide notification that there may be a risk of water freezing in the pipe system.

Interlocking sanitation control

pH and ORP are measured in tandem with the BL-132. Before chemicals are introduced to increase or reduce ORP, the pH value must first be at the defined set point. A range of 650-750 mV at 7.2 pH indicates proper water sanitation. By first utilising the pH value, controllers in the BL-13X series can reduce the costs associated with the overuse of chemicals.

Customisable logging intervals

The BL-132 features full data logging, with a range of measurement reading intervals to choose from to suit personal preference or meet compliance regulations. Measurement reading intervals can be set to 30 seconds, 1 minute, 5 minutes, 15 minutes, 30 minutes or 1 hour, refreshing each day or following calibration. ORP, pH and temperature are all logged, plus the last calibration data, event information and setup configuration.

Additional external dosing options

The BL-132 can be used for larger pools with the inclusion of 2 relays. These relays can be connected directly to external, larger dispensing pumps. This provides greater flexibility, allowing controllers in the BL-13X series to be used to dose pools of a wide range of sizes.

Achieve HSG282 compliance

The BL-131 and BL-132 controllers for hot tubs, spas and pools help businesses comply with HSG282. Under the HSE's 2017 legislation, both sanitation and pH levels should be continually logged and stored to help reduce the risk of legionella and other pathogens.