







Swimming Pool Controllers for pH Disinfection and Control
$1,739.99Our Swimming Pool Controllers for pH Disinfection and Control are essential for every business. Maintaining balanced, clean, and safe water in pools and spas is crucial, but regular water quality checks can be cumbersome. Automate your testing with our advanced controllers for hassle-free management.
Ideal for disinfecting and treating water in swimming pools, spas, and hot tubs, these controllers help you efficiently monitor and control pH and Free Chlorine levels, making them a perfect addition to your commercial facility.
• Accurate and reliable. Precisely control pH and Free Chlorine to ensure pool and spa water quality
• Simple and convenient. Access to pumps, USB-C, and connections with a removable faceplate.
• The Air Temperature Sensor prevents pipe freezing by triggering an alarm if temperatures drop critically low.
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Our Swimming Pool and Spa Controllers for pH Disinfection and Control are perfect for:
- Hotels and resorts
- Spas
- Wellness centers
- Amusement water parks
- Condominiums with pool access
- Local town and community facilities with swimming pools
Automatic pool controllers for precise pH and free-chlorine management
Choose your pool and spa automation set up
Our Swimming Pool and Spa Controllers have two installation options
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Product Disclaimer:
For your safety, we recommend that this product be installed by a qualified pool professional or licensed electrician in accordance with state requirements or local zoning regulations. Improper installation could cause dangerous electrical hazards resulting in serious injury or damage to the equipment or property.
Keep pool and spa water parameters under control and spend less time on maintenance.
Our automatic Swimming Pool and Spa Controllers do the work for you, so you don't have to!
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Peristaltic dosing system
Manufactured with two peristaltic dosing pumps with replaceable chemical resistant tubing One of these pumps doses acid or base while the other is used to dose chlorine Alternatively, when a system uses a diaphragm pump, chlorine gas that forms from outgassing can collect in the pump head and cause the pump to lose its prime. With our Swimming Pool and Spa Controllers, the buildup of chlorine gas is not an issue due to the peristaltic pumps -
Automatic proportional pump control
Made with proportionally controlled dosing pumps Allows precise control and helps maintain the desired set point Users can set the proportional band based on the amount of chemicals added and the size of the body of water being treated. For example, a large body of water like a swimming pool, should use a small proportional band (e.g., 0.1 pH) to ensure that the pumps dose more often when the reading nears the set point. On the other hand, with a small body of water such as a hot tub, it is better to set a larger proportional band (e.g., 1.0 pH). This minimizes the amount of time that the dosing pump is on for and this also avoids large swings in pH and ORP levels -
Adjustable flow rate
Dosing pump flow rate is adjustable from 0.5 to 3.5L/h The adjustable flow rate, like the proportional band, allows for better control in maintaining a desired set point Larger bodies of water like swimming pools, require more chemicals to see a change in the reading compared to smaller bodies of water like hot tubs. This is where the adjustable flow rate comes in handy -
ORP (Chlorine) dosing consent
Perfect for chlorine disinfection as there is an inverse relationship between pH and ORP. When pH levels increase, the ORP levels decrease The dosing consent feature will not dose chlorine until the pH value is corrected first which can prevent a potentially irritating and unsafe condition This avoids having a chlorine concentration that is too high and prevents chemicals from being wasted
Upgrade & track from anywhere
with our Swimming Pool and Spa Controller (BL132 Only)
Always know how your swimming pool, spa, or hot tub is doing from wherever you are. Check in on your controller remotely and securely from your phone, tablet, or laptop via the Hanna Cloud. All important information is sent to the Hanna Cloud via an Internet connection.
Get real-time readings and view all data including measurement trends, a results history log, controller settings, alarms, pump status, and more.
Ensure that the treatment of your spa, hot tub, or pool water is going swimmingly. Connect multiple devices and adjust your preferences to receive email or pop up messages with progress updates.

Got questions?Email us at sales@hannainst.com for assistance. We'd like to hear more about your requirements for your business. Let's chat and find the right solution for your testing needs. |
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Resources
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Features
- Two built-in peristaltic dosing pumps with Proportional control
- Manual control for pump priming
- Overfeed protection using overtime safety timer
- Resumes dosing on restart in case of power failure
- Level input to stop control without reagents
- Interlocked pH-ORP control (i.e.ORP control only runs when the pH set point has been reached)
- External dosing: The controller has 2 relays that can be used to control larger external dispensing pumps, allowing the BL13x to be used in larger pools.
- Air temperature sensor: Allows triggering an alarm if the air temperature is cold enough that there is a risk of water freezing in the pipes (e.g. hot tubs in winter with the circulation pump off)
- Bidirectional control: Use the Hanna Cloud to update settings on the controller
- User selectable logging interval: As pool settings normally do not change that quickly, minimize data management by choosing from a wide selection of logging interval
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Reporting and connection options
- Our Swimming Pool and Spa Controllers (BL131 and BL123) have 3 analog outputs (4-20 MA) for pH, ORP, and temperature. Each analog output can be disabled or connected to an external recording device. Parameters can be assigned to an analog output where the current signal will adjust to be proportional to the measured value. For greater flexibility and better resolution, the analog output can be scaled and users can define any two points within a parameter range to correspond to the analog output span. This adjustment allows for better resolution for the desired range
- The readings for each parameter are automatically logged every 10 seconds. A new log is created at the start of a new day or each time the controllers are calibrated. All necessary GLP (Good Laboratory Practice) data is stored including the values for each parameter, any event data, and calibration and setup configuration information
- Export and transfer data using a USB Flash Drive and the USB-C port
- Secure these controllers with password protection. Users can choose to restrict access and passwords can be enabled or disabled during set up
- Available with our Swimming Pool and Spa Controller (BL132) only! This controller can connect to the Hanna Cloud using a secure Ethernet connection
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What's included
Option 1: In-line mounting kit (BL131-10 and BL132-10) Option 2: Flow cell mounting kit (BL131-20 and BL132-20) Digital Multiparameter pH/ORP/Temperature
Electrode (HI1036-1802)Digital Multiparameter pH/ORP/Temperature
Electrode (HI1036-1802)Air temperature probe (BL130-900) Air temperature probe (BL130-900) Fittings for electrode Panel mounted flow cell Saddle for electrode, Ø 50 mm pipe (1 pc.) Flow cell panel
Injector (2 pcs.) Valve for flow cell connection and fittings (2 pcs.) with 10 m tubing
Saddle for injectors, Ø 50 mm pipe (2 pcs.) Valve saddle, Ø 50 mm pipe (2 pcs.
Silicon oil (dropper bottle)
Injector saddle, Ø 50 mm pipe (2 pcs.)
PVC aspiration and injection tubing, 10 m
Injector (2 pcs.)
Aspiration filter (2 pcs.) Peristaltic pump tubing (2 pcs.) 4.01 pH buffer solution (3 sachets) Silicon oil (dropper bottle) 7.01 pH buffer solution (3 sachets) PVC aspiration and injection tubing, 10 m
470 mV ORP test solution (3 sachets) Aspiration filter (2 pcs.) Power cable Cable gland gaskets
Quick reference guide with QR code for manual download 4.01 pH buffer solution (3 sachets) Quality certificates (instrument, probes, accessories)
7.01 pH buffer solution (3 sachets) Quality certificates (instrument, probes, accessories)
470 mV ORP test solution (3 sachets) Quality certificates (instrument, probes, accessories)
Power cable Quick reference guide with QR code for manual download Quality certificates (instrument, probes, accessories)
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Specifications
Specification Name Detail SKU BL13X pH Range 0.00 to 14.00 pH* (The range (pH & temperature) may be limited by the probe’s limits.) pH Resolution 0.01 pH pH Accuracy (@25°C/77°F) ±0.05 pH (@25 °C / 77 °F) ORP Range ±2000 mV ORP Resolution 1 mV ORP Accuracy (@25°C/77°F) ±5 mV (@25 °C / 77 °F) Temperature Range –5.0 to 105.0 °C (23.0 to 221.0 °F)* Temperature Resolution 0.1 °C / 0.1 °F Temperature Accuracy (@25°C/77°F) ±1.0 °C /±1.8 °F (@25 °C / 77 °F) Temperature Compensation • Automatic temperature compensation for pH
• Range –5.0 to 105.0 °C (23.0 to 221.0 °F)Air temperature Range –30.0 to 80.0 °C (–22.0 to 176.0 °F)* Air temperature Resolution 0.1 °C / 0.1 °F Air temperature Accuracy ± 0.5°C Ethernet input BL132 ONLY Ethernet input RJ-45 Ethernet connector (10/100 Mbps connection) Alarms High and Low with enable / disable option for all parameters; Alarm is triggered after a user-specified time Password Protection Password protected setup, calibration, and log recall Alarm Relay Output (BL131 ONLY) 3 × galvanically isolated, user configurable 4-20mA outputs; Current sensing resistor ≤ 500 Ω; Accuracy < 0.5 % FS Power Supply 100 - 240 Vac; 50/60 Hz; 0.7A Casing l mounted, internal pumps, IP65 rated Environment 0-50 °C (32-122 °F); Maximum 95 % RH non-condensing Dimensions 245×188×55 mm (73 mm with pumps); 9.6×7.4×2.2" (2.9" with pumps) Weight 1700 g (60 oz) -
Warranty
2 year warranty for controllers (BL131 and BL132)
6 month warranty for probe (HI1036-1802)
Our Swimming Pool Controllers for pH Disinfection and Control (BL131 and BL132) are warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to instructions. Electrodes and probes are warranted for a period of six months. This warranty is limited to repair or replacement free of charge. Damage due to accidents, misuse, tampering or lack of prescribed maintenance is not covered.
For more information, please visit our Terms and Conditions or contact our Tech team directly by phone at 800-426-6287 or by email at tech@hannainst.com. -
Video
- Product manual