Hanna HI943500 EC Analog Controller

Description

The Hanna HI943500 EC Analog Controller is an advanced, panel-mounted conductivity monitoring and control solution engineered for precision across diverse industrial processes. Designed to directly interface with a potentiometric conductivity probe (such as the HI7638) without the need for a separate transmitter, it provides accurate, real-time measurements over extended cable distances—up to 20 meters—without signal degradation. Its automatic temperature compensation (ATC) ensures the highest accuracy even under abrupt thermal changes, making it suitable for environments where temperature variation is commonplace. Available in four distinct models, each tailored to specific measurement ranges, this controller adapts to applications from high-range industrial conductivity monitoring to ultra-low micro-siemens sensitivity. With its compact DIN panel mount format and robust construction—including a splash-proof transparent front cover—the HI943500 is engineered for reliability in heavy-use conditions. Whether you are monitoring water purity, controlling chemical dosing in production lines, or supervising electrolyte processes, the HI943500 delivers consistent results and integrates seamlessly into PLC-based or recorder-linked systems.

Direct Probe Input for Simplified Installation

One of the defining strengths of the HI943500 series is the elimination of intermediate transmitters in conductivity measurement systems. By supporting direct connection of potentiometric probes, such as the HI7638, it streamlines installation and reduces both setup time and maintenance complexity. Industrial technicians can connect probes directly via a sturdy DIN connector, avoiding additional signal conditioning hardware while retaining mA-output compatibility for integration with recorders or PLC units. This architecture enhances operational simplicity in sectors like food and beverage production, plating and coating processes, boiler feed water monitoring, and pharmaceutical water treatment. The direct-input design ensures minimal signal loss, accurate calibration, and lower lifecycle costs for industrial plants. For operators working across large facilities, the ability to run probe cables up to 20 meters without interference offers substantial deployment flexibility.

Robust Construction for Demanding Industrial Environments

The HI943500 combines technical finesse with rugged build quality. Its flame-retardant ABS housing and shockproof aluminum panels shield the delicate internal circuitry from environmental hazards such as dust, moisture, and accidental impacts. A removable splash-proof cover protects against process fluid splashes, ensuring prolonged operational life even in humid or chemically active atmospheres. This design integrity is essential in industries like chemical manufacturing, desalination plants, cooling tower management, and wastewater treatment, where high humidity or liquid exposure is routine. The panel cutout requirement of 141 x 69 mm allows easy retrofitting into existing control panels without extensive modifications. The rear terminal layout—with separately isolated outputs for recorder, control setpoint, and alarm relay—ensures safe integration with peripheral control equipment. This structural resilience, combined with clear LCD data presentation, guarantees operational confidence in mission-critical applications.

Automatic Temperature Compensation for Stable Accuracy

Maintaining conductivity measurement precision under fluctuating temperatures is critical for process quality. The HI943500 executes automatic compensation across a 0 to 60°C range, with a fixed compensation coefficient of β=2%/°C. This feature is performed directly in-probe via the HI7638 sensor’s built-in temperature element, reducing system complexity and ensuring immediate, real-time accuracy corrections. Applications in brewing, fermentation control, pulp and paper machinery, or cooling fluid oversight benefit enormously from such stability. A manual two-point calibration system using offset and slope trimmers enables technicians to fine-tune readings to match process requirements precisely. By blending digital measurement with analog trimmer adjustment, it bridges the gap between modern automation and traditional hands-on calibration precision. The result is a controller trusted by operators who demand long-term measurement stability and efficient calibration cycles.

Integrated Relays for Control and Safety

Embedded within the HI943500 are isolated setpoint and alarm relays designed to interface with dosing pumps, valves, or alarms seamlessly. The setpoint relay is rated for 2A maximum at 240V (resistive load), supporting one million mechanical strokes. The alarm relay mirrors these capabilities, providing external alert signals when process conditions breach configured thresholds. These integrated controls make the HI943500 practical for automated conductivity-based dosing systems in chemical addition lines, automated cleaning-in-place (CIP) processes, and emergency shut-down protocols in ultrapure water production. Such safety-oriented design ensures both quality control and operator protection. Coupled with an isolated 4-20 mA output, the controller becomes a multipurpose hub for both monitoring and direct process actuation within industrial control frameworks.

User-Friendly Interface and Visual Indicators

In industries where control panel clarity is paramount, the HI943500 stands out with a large backlit LCD display and crisp readouts in mS/cm or µS/cm according to model. Three visual LEDs identify operational modes or alarm states, allowing instant status checks. Four finely-engineered rotary trimmers—Offset, Slope, Coarse, and Fine—provide intuitive calibration adjustments, while membrane keypads enable function calls such as slope testing or offset verification. Self-test diagnostics are accessible via front panel buttons, helping maintenance personnel run quick integrity checks prior to or during operations. This accessibility enhances troubleshooting efficiency, minimizing downtime in high-throughput facilities like beverage bottling plants, textile manufacturing depots, and coolant circulation systems. By presenting data and control access in a coherent format, the HI943500 empowers operators regardless of technical background.

Wide Model Range to Fit Any Task

Four distinct measurement configurations allow the HI943500 series to serve vastly different conductivity monitoring needs:

• HI943500A measures from 0.0 to 199.9 mS/cm with 0.1 mS/cm resolution.
• HI943500B covers 0.00 to 19.99 mS/cm with ultra-fine 0.01 mS/cm resolution.
• HI943500C spans 0 to 1999 µS/cm at 1 µS resolution.
• HI943500D delivers from 0.0 to 199.9 µS/cm with 0.1 µS/cm precision.

This diversity enables deployment in raw industrial chemical processing, municipal water quality monitoring, pure water generation for laboratories, and specialty high-conductivity wastewater applications. Operators can select the perfect range-resolution pairing to match process and purity requirements without compromising measurement integrity.

Global Availability Through Trusted Supplier tpt24.com

For businesses and facilities seeking guaranteed authenticity and global logistics, the online store tpt24.com is the premier source for the Hanna HI943500 EC Analog Controller. Known worldwide for delivering only verified original products, tpt24.com ensures each unit ships with manufacturer’s quality assurance and can be delivered to any country, making it a trusted solution for multi-national operations. This guarantee is critical where calibration traceability, product certification, and operational reliability are non-negotiable. Customers benefit from direct support, rapid dispatch, and the reassurance that the conductivity controller they receive is fully compliant with Hanna’s stringent manufacturing standards. For industrial operators in sectors from pharmaceuticals to heavy manufacturing, sourcing through tpt24.com means securing both performance excellence and uncompromised authenticity.