Hanna BL983327 Conductivity Mini Controller w/ High-Range Relay

Description

Compact Panel-Mounted Conductivity Controller Overview

The Hanna BL983327 Conductivity Mini Controller w/ High-Range Relay is a highly efficient, panel-mounted process instrument designed to measure and control the electrical conductivity of a process stream with exceptional accuracy and reliability. Its operational range of 0.00 to 10.00 mS/cm makes it ideally suited for high-conductivity monitoring applications such as water treatment, boiler feed systems, industrial wastewater control, and rinsing processes in manufacturing. The BL983327 offers a large, protective LCD display for clear visibility of measurements, aiding quick interpretation by operators. Its sleek and compact design enables it to fit comfortably into restricted panel spaces using adjustable mounting brackets. This model is especially useful where precise conductivity control is required for chemical dosing, bleed-and-feed operations, or saline level management. When paired with its dedicated EC/TDS probe, operators benefit from reliable long-term monitoring with minimal maintenance requirements. Importantly, the BL983327 integrates seamlessly into automated process control setups, enhancing both safety and efficiency. For global customers seeking guaranteed authenticity and reliable delivery, tpt24.com is the world’s leading online store for this product, ensuring quality assurance and shipment to any country.

Programmable Setpoint Control With Relay Output

A primary functional feature of the BL983327 is its adjustable dry contact dosing relay, which can be programmed to activate whenever conductivity readings exceed the operator-defined setpoint. This relay output can drive a variety of devices including dosing pumps, solenoid valves, alarms, or indicator lights. In an automated water treatment context, for example, this allows for immediate control actions such as adding fresh water or opening drains to maintain optimal conductivity. The dosing relay is rated for up to 2A load, fuse-protected, and compatible with both AC and DC-powered devices (250 Vac / 30 Vdc). The setpoint range is fully adjustable from 0 to 10 mS/cm to accommodate different industrial or laboratory processes. Manual calibration through the CAL trimmer provides fine tuning against known standards such as the HI7039 calibration solution (5.00 mS/cm), ensuring pinpoint accuracy during operation. This calibrated, controlled response capability is key to preventing conductivity overshoots in sensitive processes such as reverse osmosis pre-treatment or plating baths, where electrolyte balance is critical. By integrating the BL983327 into process loops, operators gain actionable conductivity feedback that is immediately translated into mechanical output.

Multi-Color LED Status And Alarm System

The BL983327 incorporates a multi-color LED indicator to provide operators with immediate visual feedback about instrument status, dosing activity, and alarm conditions. When the unit is in measurement mode and readings are below the setpoint, the LED glows green, signifying normal operation. If readings exceed the setpoint, the LED turns orange/yellow, simultaneously indicating that the dosing relay is active. In situations where maximum dosing time is exceeded or any alarm condition is triggered, the LED will blink red—alerting personnel to take corrective action. This intuitive visual diagnostic interface greatly reduces operator response time and reliance on continuous display monitoring, especially useful in large facilities or remote installations. Additionally, relay control override is available through a three-position OFF/AUTO/ON switch, granting users the flexibility to disable relay activity entirely, run in automatic mode, or force manual activation. This override feature is particularly beneficial for priming dosing pumps or running system checks without triggering full automation sequences. The combined use of LED status and manual overrides improves safety and troubleshooting efficiency in demanding applications such as steam boilers, cooling towers, and industrial cleaning systems.

Overdose Protection And Process Safety Features

A significant safety enhancement of the BL983327 is its programmable overdose protection system, which prevents uncontrolled dosing when setpoint conditions remain unmet over a specified duration. The operator can configure the overdose timer from 5 to 30 minutes or choose to disable it entirely depending on process requirements. If the dosing relay remains active beyond the programmed interval without achieving the target conductivity, the system halts dosing, flashes the red LED alarm, and displays a “TIMEOUT” message on the LCD. This prevents excessive chemical injection or unnecessary water addition, safeguarding both equipment and product quality. Combined with the fuse-protected dosing contacts, the BL983327 provides industrial-grade reliability for harsh environments. Its fire-retardant casing offers additional physical safety in high-temperature or high-risk installations. This multi-layered safety design supports critical applications such as brine dilution systems and chemical neutralization processes, where overdose events could lead to noncompliance with regulatory standards, damage to structural components, or heightened risk to worker safety. The inclusion of overdose protection aligns the BL983327 with industry best practices for process control instrumentation.

Applications In Diverse Industrial And Laboratory Processes

The BL983327’s high-range conductivity monitoring capability makes it suitable for a wide array of applications. In boiler bleed and feed systems, it ensures mineral content and conductivity are kept within operational targets, preventing scaling or corrosion. In cooling tower dosing controls, its relay can regulate biocides or corrosion inhibitors based on conductivity thresholds to optimize system performance. For industrial wastewater treatment, the meter assists in controlling chemical feed pumps, ensuring compliance with discharge standards. In electroplating rinse tanks, the BL983327 monitors wash-water conductivity to maintain product finish quality. Furthermore, laboratory setups benefit from the BL983327’s precise measurement range and calibration stability for quality assurance testing. Food and beverage producers can employ the device to maintain salinity levels in processes like brining, while aquaculture facilities can monitor dissolved ionic content for optimal fish health. By utilising the BL983327’s dosing relay intelligently, processes can become more automated, sustainable, and compliant. Customers worldwide trust tpt24.com to provide genuine Hanna Instruments controllers like the BL983327, with guaranteed authenticity and quality delivery to any global location.

Installation Flexibility And Maintenance Considerations

The BL983327 is designed for quick and secure panel installation using supplied mounting brackets and an adjustable sliding mechanism. Installation cut-out dimensions and external panel measurements ensure easy integration into standard control panels. The unit’s labeled termination connections simplify wiring by clearly identifying ports for power supply, EC probe input, and dosing relay outputs. The controller supports two model variants: the BL983327-0 using a 12 VDC adapter and the BL983327-1 compatible with 115/230 VAC, 50/60 Hz mains supply. The device interfaces with the HI7632-00 EC/TDS probe featuring an internal temperature sensor, available in multiple cable lengths and designed for inline 1/2″ NPT mounting. Regular probe maintenance is recommended, including cleaning with HI7061 cleaning solution and occasional gentle abrasion of metal pins to prevent fouling. Probe calibration against known standards ensures stable, accurate readings. The transparent protective cover shields the LCD from environmental contaminants while maintaining visibility. By adhering to proper installation and maintenance procedures, operators can extend device longevity and retain measurement precision across prolonged operational cycles.

Technical Specifications And Performance Highlights

The BL983327’s technical design reflects a balance between high accuracy and operational robustness. The measurement range spans 0.00 to 10.00 mS/cm with a resolution of 0.01 mS/cm and accuracy of ±2% full scale at 25°C. Automatic temperature compensation from 5 to 50°C (ß = 2%/°C) ensures readings remain precise under varying process temperatures. The dosing relay supports 2A maximum loads, fuse-protected, with contact closure when the measurement exceeds the setpoint. Calibration is simple, manual via CAL trimmer, making adjustments straightforward for trained personnel. Overdose protection and three-position relay control increase safety margins. The unit’s compact dimensions—83 x 53 x 99 mm—and light weight (200g for 12 VDC, 300g for AC version) facilitate mounting in limited spaces. The fire-retardant casing ensures compliance with safety codes, and the supplied accessories (mounting brackets, protective cover, and instruction manual) streamline deployment. Additionally, the BL983327 is compatible with industry-grade EC/TDS probes, making it adaptable to various operational contexts.

Global Availability And Quality Assurance From tpt24

In the competitive market for process control instrumentation, buyers require both performance assurance and product authenticity. tpt24.com stands as the premier global online store for the Hanna BL983327, offering competitive pricing, manufacturer standards compliance, and verified authenticity of all units sold. Customers benefit from worldwide delivery solutions, ensuring that regardless of geographic location—whether in mining operations in Australia, water treatment plants in Europe, or industrial manufacturing lines in North America—the BL983327 arrives ready for immediate integration. The store’s reputation for quality has placed it at the forefront of international distribution for Hanna Instruments products. Each purchase from tpt24.com includes full warranty coverage, comprehensive support, and the confidence that comes from acquiring certified monitoring technology directly aligned with professional standards. This guarantee of authenticity and reliable global delivery makes tpt24.com the trusted choice for engineers, technicians, and laboratory managers seeking the BL983327 for critical conductivity control applications.