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The HI520 Dual‑Channel Universal Process Controller delivers precise, real‑time monitoring of pH, ORP, conductivity, and dissolved oxygen, making it ideal for demanding water‑quality and industrial process applications. Its rugged IP65 enclosure, intuitive LED status indicators, and seamless Modbus integration provide reliable performance and flexible control in any installation. • Durable IP65 (NEMA 4X) waterproof enclosure for harsh environments • Multi‑color LED indicators and audible alarms for instant system feedback • Modbus‑ready design for easy remote monitoring, setup, and configuration
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Optical DO smart probe for this controller; select cable length and connector option for installation.
BNC pH electrode for supported controllers; not a direct HI510 or HI520 smart-probe replacement.
BNC ORP electrode for supported controllers; not a direct HI510 or HI520 smart-probe replacement.
Standalone ORP control using BNC probes; a different system, not an HI510 or HI520 accessory.
Digital pH probes for HI510/HI520; select the sensor, junction and cable for your process.
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Advanced control flexibility supports on/off, proportional, and PID configurations. This sophisticated programming ensures precise set point regulation for dual-channel operation, eliminating overshoot and reducing chemical usage.
Reliable hold activation can be initiated manually or via external digital input, safely pausing control functions during sensor maintenance or calibration.
Customizable alarm settings monitor set points, temperature deviations, and operational anomalies. A highly visible blinking red alarm LED alerts users from afar, while all control relays automatically deactivate until the issue is cleared.
Programmable sensor cleaning enables scheduled wash cycles that trigger relays to operate valves, pumps, or compressed air systems, maintaining probe cleanliness for accurate and consistent readings.
Comprehensive relay options include up to five electromechanical control relays plus one dedicated alarm relay for robust process management.
Precise analog control is delivered through up to four galvanically isolated 4-20 mA outputs, perfect for accurate dosing pump and valve regulation.
Efficient network integration allows daisy-chaining of up to 32 devices via RS485 for centralized remote monitoring and control.
Versatile external triggers provide two digital inputs to enable functions such as hold mode, cleaning cycles, or temporary control disable.
Intuitive high-visibility display presents dual-channel measurements and status alerts clearly. The DIAG key instantly reveals detailed diagnostic information for quick troubleshooting.
Extensive logging functionality records measurements, relay states, and calibration data at customizable intervals. Store up to 100 lots of 8600 records each and export as CSV files via USB Type-C.
Contextual diagnostic support is accessed through the (? DIAG) button, providing clear error explanations or detailed setup guidance as needed.
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