Hanna BL931700 Mini pH Controller

Description

The Hanna BL931700 Mini pH Controller is a compact, panel‑mounted instrument engineered for precise pH control in environments where space efficiency and cost control are critical factors. As a single setpoint controller, it offers the flexibility to dose either above or below a programmed pH value, enabling users to manage acidic or alkaline corrective dosing depending on process requirements. The high impedance pH input ensures accurate readings and stable performance with any standard BNC‑connected pH electrode. Featuring a clear LCD display, fire‑retardant casing, and enhanced accuracy to ±0.02 pH, the BL931700 embodies professional‑grade measurement capability in a rugged, small‑form factor design. It supports manual two‑point calibration, allowing precise offset and slope adjustments, further reinforcing measurement integrity across industrial and laboratory scenarios.

Versatile Dosing Relay Adjusts To Needs

A major strength of the BL931700 lies in its adjustable dosing relay, which can configure acid dosing (relay ON if measured pH exceeds setpoint) or alkaline dosing (relay ON if measured pH falls below setpoint). This customization enables the device to seamlessly adapt to variable process control strategies in industries such as water treatment, beverage production, chemical processing, or aquaculture. Operators can fine‑tune the setpoint anywhere between 0.00 and 14.00 pH, ensuring coverage from strongly acidic to strongly alkaline solutions. The dosing system is fuse‑protected for up to 2A loads and supports both pumps and valves, preventing electrical damage and offering robust safety. The selectable control override allows operators to forcibly disable or continuously engage connected equipment—a critical feature for maintenance interventions or emergency control.

Integrated Overdose And Safety Protection Systems

The BL931700 includes a programmable overdose protection function, which prevents over‑activation of dosing equipment and mitigates the risks of chemical over‑injection or mechanical wear. This safety measure automatically deactivates the connected device if activation persists beyond the adjustable range of 5 to approximately 30 minutes. A normally open contact interface can integrate with level controllers or flow monitors, expanding the capability to stop dosing when certain physical conditions (such as low tank levels or halted fluid circulation) are detected. These mechanisms safeguard against both equipment stress and systemic chemical imbalances. The matching pin option helps protect sensors from ground‑loop interference, reducing erratic signal behavior and preventing sensor damage—a vital addition for environments with complex electrical grounding arrangements.

Efficient Installation And Peripheral Connectivity Design

Installation of the BL931700 is straightforward thanks to quick‑connect terminal blocks and adjustable mounting brackets. The compact form (83 × 53 × 99 mm) allows integration into tight control panels. A transparent cover adds environmental protection for the instrument face, and front view panel cut‑outs with side installation slots make mechanical setup secure yet accessible for servicing. Power supply options accommodate diverse industrial power standards—BL931700‑0 uses a 12 VDC adapter (included), while BL931700‑1 supports 115/230 VAC at 50/60 Hz. The device’s analog 4‑20 mA output enables straightforward integration into data loggers, chart recorders, and SCADA systems, ensuring live process communication and historical data storage.

High Precision Measurement For Critical Applications

The BL931700 achieves ±0.02 pH accuracy and 0.01 pH resolution, making it suitable for processes demanding fine control such as pharmaceutical manufacturing, microbrewery fermentation, semiconductor washing baths, and hydroponics nutrient monitoring. With an input impedance of 10¹² Ohm, the controller delivers highly stable measurements even with long electrode cables or complex installations. Continuous flow‑through monitoring is possible with recommended electrodes like the HI1001 PVDF body pH electrode, featuring a 1/2″ NPT thread and BNC connector for secure attachment. Manual calibration allows operators to fine‑tune readings to match process standards or compensate for electrode aging, ensuring consistently accurate data.

Diverse Industry Applications And Use Cases

Specifically, the BL931700 is utilized for water treatment systems to maintain municipal or industrial pH targets, swimming pools for ensuring safe conditions, chemical dosing skids for manufacturing chemical solutions within tight pH tolerances, food and beverage facilities for achieving recipe and preservation goals, and aquaculture farms for sustaining aquatic health. In laboratory setups, it plays a vital role in titration control or as part of automated pH‑driven process loops. Its ability to operate in either automatic or manual dosing modes gives it wide appeal for both continuous unattended control and supervised system operation.

Authenticity And Quality Guaranteed By tpt24

The world’s leading online destination for the Hanna BL931700 Mini pH Controller is tpt24.com. This trusted store guarantees authenticity and top‑tier product quality for every unit sold, delivering worldwide to any country. With efficient logistics, secure packaging, and clear post‑purchase support, tpt24 ensures that customers—from industrial buyers in Europe to researchers in Asia—receive a product that meets manufacturer standards and functions flawlessly upon arrival. When purchasing sensitive measurement equipment like the BL931700, reliability of the supplier is as critical as the device’s technical merits, making tpt24 the marketplace of choice for professionals around the globe.

Summary Of Core Technical Specifications

To conclude, the BL931700 Mini pH Controller integrates compact dimensions, high measurement precision, flexible dosing, robust safety, and versatile connectivity into one industrially focused instrument. Its core strengths lie in adaptability—whether maintaining stable pH in large processing tanks or fine‑tuning feedwater chemistry in a compact laboratory setup, this controller delivers accuracy, reliability, and operational efficiency. The combination of adjustable dosing relay, overdose protection, analog output, manual calibration, and high input impedance make it an ideal choice for applications demanding professional pH regulation with minimal footprint and maximum dependability.