Hach SC1000 Multi-Parameter Universal Controller
| Brand | Hach |
|---|---|
| Origin | USA |
| Model | SC1000 |
| Operating Temperature | -20 to 55 °C |
| Storage Temperature | -20 to 70 °C |
| Relative Humidity | 0–95% RH (non-condensing) |
| Power Supply | 100–230 VAC, 50/60 Hz |
| Display | 1/4 VGA backlit TFT color touchscreen |
| Relay Outputs | 4 × SPDT |
| Analog Outputs | 4–20 mA (up to 12 channels, 500 Ω max load) |
| Analog Inputs | 12 × 4–20 mA (500 Ω max input impedance) |
| Digital Communication | MODBUS RTU (RS485 & RS232), PROFIBUS DP, Ethernet service port, optional GSM cellular module |
| Sensor Connectivity | Up to 8 digital sensors per probe module |
| Enclosure Rating | IP65 (panel-mounted display module) |
Overview
The Hach SC1000 Multi-Parameter Universal Controller is an industrial-grade, modular process instrumentation platform engineered for high-integrity, real-time monitoring and control of multiple water quality and process parameters in demanding municipal, industrial, and wastewater treatment applications. Built upon a distributed digital sensor architecture, the SC1000 operates as a field-deployable control hub that integrates analog and digital sensor inputs—including pH, ORP, conductivity, dissolved oxygen, turbidity, chlorine, ammonium, nitrate, and more—without requiring dedicated instrument-specific controllers. Its core architecture leverages deterministic digital communication protocols to ensure signal integrity, eliminate analog drift, and support traceable, time-synchronized data acquisition across geographically dispersed measurement points. Designed for continuous operation in harsh environments, the SC1000 complies with IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emissions) standards and meets UL 61010-1 and CE marking requirements for industrial control equipment.
Key Features
- Modular system architecture: Supports up to eight Hach digital sensors per probe module; multiple probe modules can be daisy-chained or networked via RS485 to share a single display and control unit.
- Intuitive human-machine interface: 1/4 VGA color TFT touchscreen with graphical navigation, multilingual support (English, Spanish, French, German, Chinese), and context-sensitive soft keys for rapid parameter configuration and alarm management.
- True plug-and-play operation: Auto-detection and zero-configuration commissioning of Hach IntelliCAL™ and other compatible digital sensors—no PC software or manual scaling required.
- Scalable I/O expansion: Standard 4 SPDT relays (250 VAC / 5 A) and 4–20 mA analog outputs; expandable to 12 analog outputs and 12 analog inputs using DIN-rail-mounted I/O modules connected via the internal digital bus.
- Dual-protocol digital connectivity: Native MODBUS RTU (RS485 and RS232), PROFIBUS DP, and Ethernet service port for integration into DCS, SCADA, or MES systems; optional GSM cellular module enables remote telemetry and SMS-based alarm notification.
- Rugged environmental design: IP65-rated front panel for the display module; operating range of –20 to +55 °C and storage range of –20 to +70 °C at 0–95% non-condensing relative humidity.
Sample Compatibility & Compliance
The SC1000 is certified for use with Hach’s full portfolio of digital smart sensors—including the HQd series, CL17sc, DR3900-compatible probes, and legacy IntelliCAL electrodes—ensuring metrological traceability and calibration verification through embedded sensor diagnostics and NIST-traceable calibration memory. It supports compliance-critical workflows in regulated environments: audit trails are maintained for all configuration changes, calibration events, and alarm acknowledgments; data logging intervals are configurable from 1 second to 24 hours; and all stored data includes timestamp, sensor ID, and operator credentials where enabled. The controller facilitates adherence to EPA Method 150.1 (pH), ASTM D1293 (electrical conductivity), ISO 5814 (dissolved oxygen), and USP (conductivity in purified water systems). When deployed with appropriate validation documentation, it satisfies functional requirements for GLP and GMP environments under FDA 21 CFR Part 11 when paired with secure network authentication and electronic signature protocols.
Software & Data Management
The SC1000 operates independently without external software but supports bidirectional communication with Hach’s DataCapture™ and LogBook™ desktop applications via USB or Ethernet for configuration backup, historical data export (CSV/Excel), and report generation. All logged data are stored internally on non-volatile flash memory (≥1 million data points) with automatic rollover and time-stamped metadata. Real-time data can be streamed via MODBUS TCP or PROFIBUS DP to plant historians or cloud-based platforms such as Microsoft Azure IoT Hub or AWS IoT Core using standard OPC UA gateways. Firmware updates are performed over-the-air or via USB stick, with version rollback capability and SHA-256 checksum verification to ensure firmware integrity.
Applications
- Municipal drinking water treatment: Continuous pH, chlorine residual, and turbidity monitoring at entry, filtration, and distribution points.
- Wastewater influent/effluent monitoring: Simultaneous measurement of ammonium, nitrate, DO, and ORP in activated sludge basins and tertiary treatment stages.
- Industrial cooling tower and boiler feedwater control: Conductivity, pH, and corrosion inhibitor dosing feedback loops.
- Food & beverage process water quality assurance: On-line verification of rinse water conductivity and sanitizer concentration (e.g., peracetic acid, chlorine dioxide).
- Pharmaceutical purified water (PW) and water-for-injection (WFI) systems: Compliance-ready conductivity and TOC correlation monitoring per USP and .
FAQ
Can the SC1000 operate without a display module?
Yes—the probe module functions autonomously as a digital sensor concentrator and can transmit data via MODBUS or PROFIBUS to a remote PLC or SCADA system even without the touchscreen display unit.
Does the SC1000 support HART-enabled analog sensors?
No—it is designed exclusively for digital Hach sensors and standard 4–20 mA analog signals; HART protocol decoding requires a separate HART multiplexer or converter.
Is password protection available for configuration access?
Yes—three-tier user access (Operator, Engineer, Administrator) with configurable password policies, session timeouts, and failed-login lockout thresholds.
How is calibration data stored and verified?
Each digital sensor retains its own calibration history, slope, offset, and date/time stamps in non-volatile memory; the SC1000 logs all calibration events locally with operator ID and reason code.
What cybersecurity features are implemented?
Firmware signing, disabled default credentials, TLS 1.2 support for Ethernet communications (via optional firmware update), and configurable firewall rules for MODBUS TCP ports.
