The Contrec Model 424 is a high-accuracy, field-mounting digital batch controller engineered specifically for precise measurement, fluid dispensing, and automated batch delivery across industrial process lines. Designed to interface seamlessly with almost any digital output flowmeter generating pulse or frequency trains, this intelligent instrument processes high-speed raw data into clear, real-time metrics including batch totals, preset quantities, current flow rates, and non-resettable accumulated totals. To prevent costly volumetric errors and product loss, the controller incorporates advanced dynamic overrun compensation alongside a specialized no-flow alarm matrix to catch unexpected pipe blockages or pump failures instantly. Enclosed in a ruggedized, weather-tight IP65 weatherproof housing featuring an adjustable backlit display and a crisp tactile keypad, the Model 424 delivers heavy-duty resilience in demanding factory environments. Complete with standard dual-stage relay control, an adjustable 8-24V DC sensor power output, and dual RS232/RS485 telemetry ports, it offers an all-in-one custody transfer and liquid handling solution for modern B2B digital networks.
Key Product Features
- Automatic Overrun Compensation: Continuously monitors and adjusts for valve closure delays to guarantee ultra-precise batch totals and zero fluid wastage.
- Dual Control Relay Outputs: Features two integrated, heavy-duty mechanical relays rated for 2A at 250V AC to execute secure single-stage or two-stage batch valve operations.
- Integrated Transducer Power: Outfitted with a software-controlled 8-24V DC excitation supply providing up to 50mA to eliminate separate field power loops for local flowmeters.
- Robust Universal Pulse Tracking: Accepts pulse train inputs from 0.25Hz up to 10kHz covering open collectors, TTL logic, magnetic pickups, Namur proximity switches, and clean contacts.
- Dual-Protocol Serial Telemetry: Standardized with side-by-side RS232 and RS485 serial ports supporting Modbus RTU, printer links with custom headers, and direct PC control.
