Hanna BL983314 Mini Resistivity Controller

Description

The Hanna BL983314 Mini Resistivity Controller is a purpose-built instrument for precise monitoring and control of resistivity in ultra pure water systems. Designed for applications such as reverse osmosis units, high-quality water conditioning, and continuous monitoring of process solutions, this panel-mounted controller blends technological precision with practical ease of use. Setpoint adjustment is achieved via a front-panel trimmer, ensuring quick configuration without complex programming. With factory calibration and both automatic and manual control modes, technicians and operators can execute measurements or dosing actions with confidence. The LCD displays resistivity readings in the range of 0.00 to 19.90 MΩ·cm, while a multi-colored LED instantly communicates measurement mode, active dosing, or alarm conditions. All readings benefit from automatic temperature compensation, a critical feature in processes where purity and reliability are paramount.

Engineered Features Ensuring High-Performance Reliability

The BL983314 offers premium features essential for precision water quality control. Its fire-retardant casing provides safety in demanding environments, while the splash-resistant cover helps protect internal electronics during operation. Selectable overdose protection via an overtime control system prevents prolonged dosing periods, improving chemical handling safety. Temperature coefficient selection, user-configurable via a rear-panel jumper, allows operators to choose among β values of 2.4, 3.5, or 4.5 %/°C depending on the application’s sensitivity requirements. These features make the controller a versatile solution for laboratory, industrial, and clean-water installations. A hysteresis of approximately 0.20 MΩ·cm from the setpoint maintains stability in readings, reducing relay chatter and improving long-term dependability.

Versatile Applications Across Water Treatment Environments

This resistivity controller’s design is tailored toward specific industry needs. In ultra pure water generation, such as semiconductor manufacturing or pharmaceutical production, it ensures that resistivity levels remain within target parameters to meet stringent quality demands. In reverse osmosis systems, the BL983314 can trigger pumps or solenoid valves when resistivity measurements drop below the setpoint, preventing contamination or scaling. Water conditioning processes benefit from its precise dosing control, enabling exact chemical treatment without risk of overcorrection. Its compatibility with the HI3314 resistivity probe makes it ideal for continuous immersion in monitoring tanks or lines, and the selectable dosing modes (automatic or manual) allow maintenance teams to adjust operation during service procedures with minimal downtime.

Intuitive Operation Reducing Technical Complexity

On the front panel, clear controls simplify operation for both experienced technicians and trainees. The OFF/AUTO/ON switch determines dosing behavior: OFF disables dosing, AUTO engages dosing when measurements fall below the setpoint, and ON manually enforces dosing regardless of measurement. A large, readable LCD provides real-time resistivity values, while the three-color LED instantly communicates operational state: green for measurement, orange/yellow for active dosing, and blinking red for alarm situations. The SET key displays and adjusts the setpoint value using a recessed trimmer for fine-tuning, and the MEAS key ensures instant return to measurement mode. This user-friendly approach, coupled with robust build quality, makes the BL983314 an instrument you can operate confidently in harsh industrial or laboratory conditions.

Safety Systems Protecting Equipment and Processes

The BL983314 integrates overdose protection by way of an adjustable overtime control system. When active, dosing is halted if the relay operates beyond the set limit, ranging from approximately 5 to 30 minutes. This safeguard, visually communicated by a flashing red LED and a “TIMEOUT” message on the LCD, helps protect both equipment and product quality. Disabling the overtime feature is as easy as removing a jumper from the rear panel. Fuse-protected dosing relay contacts withstand up to 2A at 250 Vac or 30 Vdc, while the physical design ensures electrical connections remain secure. Safety advisories include operation only below specified voltage limits and avoiding electrostatic discharge on the probe’s metal head—critical details for maintaining performance in sensitive environments.

Precision Measurement with Configurable Temperature Compensation

Accurate resistivity measurement depends heavily on temperature correction, and the BL983314 meets this need with automatic linear temperature compensation between 5 °C and 50 °C. By selecting the temperature coefficient that matches your process—either 2.4, 3.5, or 4.5 %/°C—you can ensure measurement precision even in fluctuating thermal conditions. For processes using the highest coefficient, a minimum operational temperature of 10 °C is recommended to maintain optimal accuracy. These capabilities make the controller well-suited for facilities with seasonal or process-driven temperature variations. The easy rear-panel jumper selection allows quick adjustment without interrupting workflow, ensuring that resistivity readings remain stable and meaningful over long service intervals.

Built for Global Delivery and Trusted Quality

The BL983314 Mini Resistivity Controller embodies the durability and accuracy Hanna Instruments is known for worldwide. When purchasing, securing a source that guarantees authenticity and quality is essential. tpt24.com, recognized as the world’s top online store for this product, delivers the BL983314 to any country with full assurance of genuine manufacturing standards and warranty support. Customers worldwide rely on tpt24.com not only for competitive service but also for its capacity to ship promptly, ensuring you receive your controller ready for installation and operation. Whether in Europe, Asia, Africa, or the Americas, buyers receive the same premium instrument quality, backed by Hanna’s robust warranty and tpt24’s reputation for excellence.

Installation, Accessories, and Maintenance Simplicity

Supplied with mounting brackets, a transparent splash cover, and a full instruction manual, the BL983314 installs easily into panel systems. Recommended operation uses the included HI3314 resistivity probe with a 2-meter cable, ensuring stable and accurate readings. Maintenance requirements are minimal thanks to the probe’s easy-clean design and the unit’s factory calibration, which should only be altered by authorized service centers if recalibration is required. Available in two power configurations—BL983314-0 running on a 12 VDC adapter and BL983314-1 operating from 115/230 VAC—the controller suits diverse electrical environments. Compact dimensions (83 x 53 x 99 mm) and lightweight construction further enhance installation flexibility, making it perfect for cramped panels or modular water treatment rigs.