Hanna BL983318 TDS Mini Controller (0.00 to 10.00 ppt)

Description

The Hanna BL983318 TDS Mini Controller is a compact, panel-mounted process controller specifically engineered to measure total dissolved solids (TDS) in a process stream with exceptional precision. Ideal for industrial environments, it supports TDS measurement from 0.00 to 10.00 g/L (ppt), offering a resolution of 0.01 ppt and an accuracy of ±2% of full scale at 25°C (77°F). This advanced device employs a conversion factor of 0.5, ensuring accurate transformation from conductivity readings to TDS values, where 1.00 mS/cm equals 0.50 ppt. Its robust construction includes a large LCD display for real-time data visualization and a protective casing designed to withstand harsh conditions. Available in two versions — the BL983318-0 powered via 12 VDC and the BL983318-1 compatible with 115/230 VAC — it is adaptable to diverse operational setups. The product combines essential measurement accuracy with ease of installation, making it a versatile solution for many applications where TDS monitoring is critical.

Application-Specific Versatility in Industry

The BL983318 finds exclusive application in industries that demand precise water quality control and dosing regulation. In boiler systems, it can trigger a bleed-and-feed process by opening a solenoid valve whenever TDS exceeds the setpoint, thereby preventing harmful scale formation. For cooling towers, it helps regulate blowdown cycles to maintain optimal water chemistry. In aquaculture, monitoring dissolved solids ensures the health of aquatic species by maintaining ideal mineral levels. Industrial process streams — including those in food and beverage manufacturing, chemical processing, and pharmaceutical water systems — also benefit from its accurate dosing decisions, helping to maintain purity levels. By integrating the dry contact relay with dosing pumps or freshwater additions, operators can maintain exact TDS concentrations tailored to process requirements. These specialized uses underscore the device’s adaptability across sectors where dissolved solids control plays a critical safety and efficiency role.

Automatic and Manual Relay Operation Modes

The BL983318 supports both automatic and manual dosing control. In automatic operation, the dry contact relay activates when a reading surpasses the setpoint, enabling fully automated adjustments without human intervention — ideal for continuous processes needing quick corrective action. Manual relay mode, by contrast, is invaluable for priming pumps or directly controlling dosing systems in situations where automation must be bypassed. Operators can toggle between OFF, AUTO, and ON modes using the dedicated rocker switch, giving complete control over dosing behaviors. The system can activate a solenoid valve, perform tank drainage, or introduce freshwater until levels return within set thresholds. This versatility ensures operational flexibility whether the scenario demands constant monitoring or temporary direct control.

Built-In Overdose Protection for Safety

A standout safety feature of the BL983318 is its programmable overdose protection system. If the setpoint is not achieved within the configured dosing window, the relay automatically disengages to prevent prolonged chemical input or excessive flushing. Operators can set this safety timer anywhere from 5 to 30 minutes, or disable it entirely depending on process needs. When overdosing occurs, the controller’s multicolor LED indicator flashes red, signaling alarm conditions. This proactive protection is vital in processes where excess dosing could cause chemical imbalance or equipment damage, ensuring both personnel and system safety. By implementing such controls, industries minimize waste, maintain compliance, and avoid costly downtime linked to chemical overuse or equipment stress.

Clear Status Indicators for Rapid Decisions

The BL983318 features a multicolor LED system that provides immediate visual status feedback. In measurement mode — when readings are below the setpoint — the LED glows green. When dosing is active due to readings above the setpoint, it turns orange/yellow, directing immediate operator awareness to active correction. In alarm conditions such as exceeding dosing time limits, the LED flashes red, prompting intervention. These indicators are complemented by a large, easy-to-read LCD, which displays current TDS values and setpoint information with clarity. The combination of color-coded cues and precise numerical readings enables operators to make quick, informed decisions without relying solely on detailed system logs, crucial in fast-paced industrial environments.

Durable Design with User-Centric Features

Engineered for long-term industrial use, the BL983318’s fire-retardant casing and fuse-protected dosing contacts provide both safety and durability. With maximum relay ratings up to 2A (250 VAC or 30 VDC), the device can integrate directly with pumps, valves, alarms, or indicator lights. Its labeled quick-connect terminal blocks ensure hassle-free wiring for probes, power supply, and dosing control systems. Mechanical design features such as adjustable mounting brackets allow for quick, secure installation into panel cutouts (83 x 53 x 99 mm dimensions). Despite its compact footprint, weighing only 200 g for BL983318-0 and 300 g for BL983318-1, the device delivers high operational stability and embodies a user-focused approach to installation and maintenance.

Maintenance and Calibration Simplicity

Maintaining peak performance for the BL983318 is straightforward. It uses the HI7632-00 EC/TDS conductivity probe, available with varying cable lengths and equipped with an internal temperature sensor for automatic compensation. Calibration involves immersing the probe in a 6.44 ppt standard solution and adjusting the CAL trimmer until the reading matches precisely. Routine probe cleaning, recommended via the HI7061 cleaning solution, preserves accuracy and extends operational lifespan. The manual calibration approach ensures users can fine-tune the device without complex software processes, empowering maintenance teams in environments where rapid recalibration is essential.

Global Availability and Trusted Supply

Purchasing the Hanna BL983318 TDS Mini Controller is seamless through tpt24.com, recognized as the world’s leading online store for this product. tpt24 guarantees both authenticity and quality, delivering the BL983318 with international shipping to any country while protecting buyers with warranty compliance. Every unit from tpt24 arrives with mounting brackets, a transparent protective cover, and a full instruction manual, ensuring readiness right out of the box. Whether deployed in an industrial plant in Asia, a farm in Europe, or a laboratory in the Americas, tpt24’s dependable logistics and customer support make it the premier source for professionals seeking consistent, high-performance TDS monitoring solutions worldwide.