Fast
Shipping
Quick,
Simple Ordering
Clear,
Upfront Pricing
Over 30,000
Happy Customers
Exceptional
Customer Service
Industry's Largest
Catalog
The Hanna Instruments BL121-20 Swimming Pool & Spa Controller is a complete system designed to maintain water quality in swimming pools, hot tubs, and spas. Available in two configurations, this system is perfect for both new and existing piping systems, with the basic version offering in-line installation for probe and chemical injection fittings. Meanwhile, the panel mounted version comes with a bypass flow cell, allowing for calibration and maintenance of the probe without having to shut down the recirculation pump.
With LED indicators for dosing, meter status, and service, real-time graph display, programmable alarms, and password protection, the BL121 offers a complete solution for water quality maintenance. Moreover, it features several specifications, including pH range of 0.00 to 14.00 pH, pH resolution of 0.01 pH, and ±0.05 pH pH accuracy at 25°C/77°F). The BL121 is also equipped with proportional pH dosing with adjustable set point, proportional band, delay to start at power-on, and overdosing protection.
The system also comes with ORP range ±2000 mV, ORP resolution 1 mV, and ORP accuracy of ±5 mV at 25°C/77°F. The ORP dosing of the system is proportional with an adjustable set point and proportional band. Other specifications include automatic temperature compensation, temperature range of -5.0 to 105.0°C (23.0 to 221.0°F), temperature resolution of 0.1°C (0.1°F), and temperature accuracy of ±1°C (±1.8°F) at 25°C/77°F.
Additionally, the system has a capacity for 60 days of automatic logging of pH, ORP, and temperature measurements, GLP, and events including alarms, errors, and power failures, and it can transfer data using a USB flash drive. Its password-protected and user-friendly software features pH buffer calibration, one-point manual input pH process calibration, automatic and manual modes pump control, and intuitive alert system based on LEDs.
The Hanna Instruments BL121-20 Swimming Pool & Spa Controller comes with multiple connectivity options, including USB, GLP pH/ORP calibration information, alarm relay output, analog outputs, auxiliary inputs, and a digital probe input. This all-in-one solution is easy to install, allows for seamless integration into existing systems, and comes with a user-friendly interface. The Hanna Instruments BL121-20 Swimming Pool & Spa Controller is efficient, reliable, and the perfect solution for maintaining water quality in swimming pools, spas, and hot tubs.
With LED indicators for dosing, meter status, and service, real-time graph display, programmable alarms, and password protection, the BL121 offers a complete solution for water quality maintenance. Moreover, it features several specifications, including pH range of 0.00 to 14.00 pH, pH resolution of 0.01 pH, and ±0.05 pH pH accuracy at 25°C/77°F). The BL121 is also equipped with proportional pH dosing with adjustable set point, proportional band, delay to start at power-on, and overdosing protection.
The system also comes with ORP range ±2000 mV, ORP resolution 1 mV, and ORP accuracy of ±5 mV at 25°C/77°F. The ORP dosing of the system is proportional with an adjustable set point and proportional band. Other specifications include automatic temperature compensation, temperature range of -5.0 to 105.0°C (23.0 to 221.0°F), temperature resolution of 0.1°C (0.1°F), and temperature accuracy of ±1°C (±1.8°F) at 25°C/77°F.
Additionally, the system has a capacity for 60 days of automatic logging of pH, ORP, and temperature measurements, GLP, and events including alarms, errors, and power failures, and it can transfer data using a USB flash drive. Its password-protected and user-friendly software features pH buffer calibration, one-point manual input pH process calibration, automatic and manual modes pump control, and intuitive alert system based on LEDs.
The Hanna Instruments BL121-20 Swimming Pool & Spa Controller comes with multiple connectivity options, including USB, GLP pH/ORP calibration information, alarm relay output, analog outputs, auxiliary inputs, and a digital probe input. This all-in-one solution is easy to install, allows for seamless integration into existing systems, and comes with a user-friendly interface. The Hanna Instruments BL121-20 Swimming Pool & Spa Controller is efficient, reliable, and the perfect solution for maintaining water quality in swimming pools, spas, and hot tubs.
