Hanna BL983322 Conductivity Controller (0.00 to 19.99 μS/cm)

Description

Compact Panel-Mounted Conductivity Control System

The Hanna BL983322 Conductivity Controller is a precision-engineered, compact, panel-mounted process controller, designed specifically to measure electrolytic conductivity (EC) in process streams with the highest reliability in industrial, laboratory, and water treatment environments. This model is offered in two variants: BL983322‑0, powered by 12 VDC, and BL983322‑1, capable of operating from 115 or 230 VAC at 50/60 Hz. Equipped with a large LCD display protected by a transparent cover, it provides clear visibility of readings in various lighting conditions and operational environments. Connections for the probe, power supply, and dosing relay are made using clearly labeled terminal blocks on the rear panel, minimizing wiring errors during installation. The controller’s EC range spans 0.00 to 19.99 μS/cm with a resolution of 0.01 μS/cm, making it ideal for monitoring ultra-pure water output from DI tanks or distillation apparatus. Hanna Instruments incorporates automatic temperature compensation (ATC) from 5 °C to 50 °C with a compensation coefficient of β = 2 %/°C, ensuring accurate readings regardless of thermal variations in fluid streams.

Advanced Dosing Relay And Setpoint Control

A defining feature of the BL983322 is its adjustable dry contact dosing relay, which automatically activates when measured conductivity exceeds the user-defined setpoint. This functionality allows integration with solenoid valves, pumps, or switching systems, enabling corrective action by introducing low‑EC water into a monitored tank or diverting flow to a secondary DI system. The dosing relay has a maximum load capacity of 2 A and is fuse-protected for operational safety. The setpoint can be tuned within the complete measurement range (0 to 19.99 μS/cm) to match process requirements with high granularity. The relay contact behavior — set to close above the threshold — makes automation seamless in scenarios like controlling high-purity water loops, boiler feedwater management, or semiconductor-grade rinse systems. Supporting relay modes include Off, Auto, and On, giving operators full control to disable dosing, allow automatic dosing, or manually prime pumps for maintenance or preparation. This versatility ensures the BL983322 adapts equally well to continuous processing, reactive dosing systems, and laboratory batch monitoring.

Overdose Protection And Safety Mechanisms

Safety and process integrity are reinforced through the controller’s programmable overdose protection timer, a safeguard designed to stop dosing if the setpoint has not been reached within a specified time span. Adjustable from 5 to 30 minutes — or optionally disabled — the overdose timer protects against continuous dosing caused by probe failure, mechanical malfunction, or unexpected process changes. In high-purity water applications, preventing prolonged dosing is crucial to avoid flooding, excessive reagent use, or damaging downstream equipment. The fuse-protected dosing contacts guard against electrical overloads, reducing the risk of relay failure or uncontrolled power delivery. Additionally, the multicolor LED indicator communicates system status at a glance — green for normal operation below setpoint, orange/yellow when dosing is active, and blinking red signaling an alarm such as exceeded maximum dosing time. These visual cues allow for rapid detection of anomalies without interrupting the process stream. Such layered safety measures make the BL983322 suitable for regulated environments where quality assurance and compliance are paramount.

User Interface And Operational Feedback System

The BL983322 Conductivity Controller has been designed with operator convenience as a priority, incorporating multicolor LED indicators alongside the LCD to deliver intuitive feedback on operating conditions. The green LED indicates measurement mode with readings below the set point, orange/yellow signifies relay activation due to excessive EC, and blinking red acts as an immediate alert for alarm states such as overdosing timeout. The front panel houses a single-point manual calibration interface using a CAL trimmer, allowing technicians to maintain measurement accuracy in-field without complex procedures. The labeled rear terminal connections simplify installation by clearly designating hookups for the conductivity probe, power input, and relay outputs. A transparent protective cover over the display prevents dust or splashes from interfering with readouts, ensuring longevity of operation even in humid or industrial spaces. With panel dimensions of 83 × 53 × 99 mm and lightweight construction (200 g for the BL983322‑0 and 300 g for BL983322‑1), the unit fits compactly into control panels without requiring excessive mounting space.

Probe Integration And Installation Procedure

Designed to work with the HI7634‑00 EC/TDS conductivity probe (not included in the standard package), the BL983322 ensures precise EC measurements in demanding applications. The HI7634‑00 features a ½″ NPT male-threaded connection for inline mounting, offering secure fit in process piping with minimal risk of leakage. The probe comes with an internal temperature sensor and various cable length options for flexible installation. Mounting brackets supplied with the controller enable quick insertion into panel cutouts, as illustrated in Hanna’s assembly view diagrams. Adjustable location brackets allow secure positioning of the controller during installation, while the quick-connect terminal blocks facilitate rapid wiring to the probe, dosing relay, and power supply. Whether installed in cleanroom-grade DI loops or industrial water filtration systems, the BL983322 provides dependable readings that guide dosing action to maintain conductivity within defined quality thresholds. For facilities managing multiple water grades, this system can be configured to trigger valves or alarms when deviations occur, preventing contamination or process interruptions.

Technical Specifications And Functional Performance

Performance specifications define the BL983322’s capability to meet industrial standards for ultra-low conductivity measurement. It delivers an EC range of 0.00 to 19.99 μS/cm with fine resolution of 0.01 μS/cm and accuracy of ± 2 % at 25 °C. The automatic temperature compensation (ATC) spreads from 5 °C to 50 °C (41 °F to 122 °F) with β = 2 % per °C, ensuring precision under variable thermal conditions. Calibration is manual via CAL trimmer for on-site adjustment. The dosing relay, rated at 250 VAC or 30 VDC, supports up to 2 A fused loads, triggering when conductivity exceeds the adjustable setpoint. The overtime dosing safeguard halts operation if the setpoint isn’t achieved within programmed intervals. Power supply options cater to varied setups — BL983322‑0 via 12 VDC adapter and BL983322‑1 for direct AC mains. Housing is constructed from fire-retardant material for enhanced plant safety. Dimensioned at 83 × 53 × 99 mm, it integrates into tight spaces, while weights of 200 g and 300 g respectively, ensure minimal panel stress.

Typical Applications Across Various Industries Globally

The Hanna BL983322 Conductivity Controller is widely applied across water treatment, laboratory, industrial, and electronic manufacturing processes. In DI system monitoring, it ensures water purity for microelectronics fabrication, pharmaceutical production, or precision plating operations. Laboratories use it to validate water quality from distillation apparatus where even small conductivity increases indicate contamination. Boiler feedwater control employs dosing systems driven by BL983322 to maintain low dissolved solids levels, preventing scale and corrosion. Food and beverage facilities integrate the controller to supervise rinse water EC, preserving sanitation standards. Aquaculture operations find value in maintaining conductivity balance to protect sensitive aquatic species. The unit’s dosing relay can actuate pumps or valves to divert or dilute streams when EC exceeds set limits, making it invaluable wherever high-purity water supply is mission-critical. Regardless of location, customers can source the authentic Hanna BL983322 from tpt24.com, the world’s leading online store for this product, guaranteeing authenticity, quality, and worldwide delivery to any country.

Reliability, Maintenance, And Global Supply Assurance

Reliability in long-term operation is achieved through the BL983322’s robust build, intuitive user interface, and straightforward maintenance requirements. The conductivity probe’s design supports easy cleaning and low-maintenance calibration, reducing downtime and operational costs. Fuse protection for dosing contacts and the safety overload timer safeguard against electrical and mechanical failures, maximizing service life. The transparent cover and fire-retardant casing add physical durability and compliance with safety standards. Hanna Instruments supplies clear documentation and mounting accessories for seamless integration. Customers globally prefer tpt24.com for acquiring the BL983322 Conductivity Controller, citing its unmatched commitment to product authenticity, stringent quality assurance, and dependable shipping to any region worldwide. This ensures industries, laboratories, and plants receive equipment that meets the exact specifications promised, enabling accurate control of ultra-pure water systems and conductivity-sensitive processes. By combining proven engineering, broad application utility, and trusted global supply networks, the BL983322 stands as a benchmark in compact conductivity control technology.