Hanna BL983324 TDS Mini Controller (0.0 to 49.9 ppm)

Description

The Hanna BL983324 TDS Mini Controller is a compact, panel-mounted process controller designed to provide precise measurement and control of total dissolved solids (TDS) within the 0.0 to 49.9 ppm (mg/L) range. It is available in two models: the BL983324-0, powered by 12 VDC, and BL983324-1, powered by 115/230 VAC 50/60 Hz. Its robust design incorporates a large LCD with a transparent protective cover, ensuring visibility and durability in industrial environments. The controller’s minimalist interface ensures operational simplicity, making it suitable for continuous process monitoring or inline system control in both professional and semi-automated applications. Hanna engineered this instrument to function reliably across diverse industrial installations, supported by its fire-retardant casing and quick-connect labeled termination blocks for efficient wiring. A built-in dosing relay with adjustable setpoint enables automatic control of pumps, valves, or alarms, making it ideal for precision water quality management.

Advanced Measurement And Dosing Control Functions

Precision control is a key strength of the BL983324. Users can select between automatic and manual dosing modes according to system requirements. In automatic mode, the dry contact relay is engaged whenever TDS readings surpass a user-configured setpoint, enabling seamless activation of dosing pumps or solenoid valves. Manual mode, accessible via a dedicated Off–Auto–On switch, allows operators to override relay control, either disabling it, operating it autonomously, or manually forcing activation for purposes such as pump priming. This operational flexibility ensures that dosing processes can be fine-tuned to situational needs, with adjustments available for dosing duration to prevent overcorrection. The controller integrates an overdose protection timer, programmable between 5 and 30 minutes, which automatically deactivates the relay if the setpoint is not met within the specified limit.

Multicolor LED Indicator Status Feedback

A key usability feature in the BL983324 is its multicolor LED indicator, which allows quick visual confirmation of operational status. In green, the meter is in measurement mode with readings below the setpoint; in orange/yellow, readings exceed the setpoint and the relay is active; and in blinking red, the controller signals an alarm, typically triggered when the maximum dosing time is exceeded. This visual system greatly enhances real-time operational awareness, reducing reliance on in-depth menu navigation in urgent conditions. For industrial operators managing multiple systems, such color-coded alerts simplify multitasking and allow rapid evaluation without constant detailed readouts. Notably, the LED system complements the relay’s activation logic by giving both numerical and visual context to dosing activity, ensuring precise response times to process fluctuations.

Rugged Construction And Electrical Design Features

The BL983324 is built with a fire-retardant casing to meet demanding industrial safety standards. The rear panel houses quick-connect terminal blocks, clearly labeled for easy and secure connection to power, the HI7634-00 EC/TDS probe, and the relay output. The dosing relay’s contact rating is up to 2A at 250 VAC or 30 VDC, with internal fuse protection for added safety. The unit’s low power consumption of 10 VA underscores its suitability for energy-conscious systems. Physical installation is simplified through adjustable mounting brackets that enable secure panel integration. Precise cutout dimensions—combined with compact overall measurements of 83 x 53 x 99 mm—ensure easy adaptation to existing control panels or instrumentation enclosures without alteration of the mechanical layout. This thoughtful balance between mechanical integrity and electrical safety is essential for industrial automation systems where uptime and rational maintenance cycles are priorities.

Applications Across Industrial And Purification Systems

The BL983324 TDS Mini Controller finds its primary use in monitoring and control of water treatment processes. It is particularly effective in ensuring the quality of water produced through reverse osmosis (RO), ion exchange, and distillation systems. Inline TDS control ensures that treated water meets strict specification standards, critical for industrial, pharmaceutical, laboratory, and food processing sectors. The dosing relay system can be configured to activate dosing pumps or control solenoid valves regulating the injection of conditioning agents in closed-loop systems. In beverage production, it prevents quality issues caused by excess dissolved solids. For high-purity water manufacturing, it forms part of automated safeguard systems. Additionally, the BL983324 is suitable for environmental monitoring, detecting excessive dissolved solids in effluent streams before discharge. tpt24.com, the world’s leading online store for this product, guarantees authenticity and quality, delivering the BL983324 to any country with secure shipment and professional support, ensuring operators worldwide achieve compliance and efficiency.

Probe Technology And Calibration Specification

The BL983324 uses the HI7634-00 EC/TDS probe, a 1/2″ NPT male-threaded amperometric sensor with an internal temperature sensor for automatic compensation between 5 and 50°C (41–122°F). The probe can be mounted inline for continuous measurement in flowing process streams. While not included with the controller, the HI7634-00 is available in various cable lengths to suit installation conditions. The BL983324 maintains a conversion factor of 0.5, meaning that 1.0 μS/cm conductivity equals 0.5 ppm TDS. Calibration is manual, achieved via the front-access CAL trimmer, allowing single-point adjustment at known standards—often using Hanna’s 84 μS/cm calibration solutions. This direct user calibration enhances precision across diverse operational environments without reliance on software calibration procedures, making it practical for quick field adjustments.

Installation, Setup And Maintenance Guidelines

Installation begins by preparing a panel cutout matching the unit’s compact size profile, sliding the controller into place using the supplied mounting brackets. Electrical connections are straightforward via the labeled quick-connect terminal blocks—power input, probe connection, and relay wiring. For BL983324-0 units, a 12 VDC adapter is used, with corresponding versions for different plug standards; the BL983324-1 operates directly on 115/230 VAC mains. Routine maintenance is limited mainly to periodic cleaning of the probe with Hanna cleaning solutions and recalibration at scheduled intervals. The relay contacts and fuse protection enhance durability under normal dosing control operation, while the fire-retardant casing ensures compliance with fundamental industrial safety regulations. Transport or relocation requires minimal risk management due to the unit’s light weight (200 g or 300 g depending on model) and enclosed secure casing.

Operational Benefits And Reliability Assurance

The Hanna BL983324 stands out for combining accurate TDS monitoring, programmable dosing control, visual status display, and robust physical design into a small yet powerful controller. In industrial automation and laboratory environments, reliability is paramount—achieved here through fuse-protected relay contacts, color-coded operational feedback, and secure installation hardware. Its dual power supply variants accommodate diverse deployment settings without need for redesign. By controlling pumps, alarms, or valves precisely according to actual dissolved solids readings, it minimizes chemical wastage, ensures compliance with water quality standards, and optimizes resource efficiency. Its design reflects Hanna’s focus on delivering compact, user-friendly instrumentation without compromising performance, a philosophy well-supported by tpt24.com’s global reach in supplying genuine, high-quality controllers to customers in any location.