The Rosemount Analytical Model 56 is an advanced dual-input liquid analyzer with the industry’s first high-resolution color screen. It features extensive full-color trend graphics, advanced control capabilities, a high capacity data logger and audit trail event logger, and digital communications. The touch screen features highly readable process measurement data, detailed user instructions, on-screen diagnostics, trouble-shooting information, and full-color data trend graphics. Data and event logging capability providing extensive on-board data storage that captures measurement data for both channels every 30 seconds for 30 days, allowing on-screen trend display or download to a USB memory device. Up to 300 events are stored with real time/date stamps, including start-up times, calibrations, configuration changes, alarms, power interruptions, faults and more. It also features a 12-key alphanumeric keypad to support calibration, programming, and tag entries. The model provides four independent 4-20 mA outputs that can be configured for measurements or proportional, integral, derivative (PID) control. Four relays are provided with discrete capability including: concentration control using high/low concentration alarms, relay timers or time proportional control, event-based activation using bleed and feed or totalizer-based activation, and time-based activation using an interval timer or two-week date-and-time timer. To transmit data to the plant’s PLCs, SCADA or DCS systems, it is supplied with either HART or PROFIBUS DP digital communications. HART communications versions 5 and 7 protocols are standard on all configurations.  The modular design of the analyzer allows the addition of a measurement channel on single input units and reconfiguration of field units with easy wiring and fast start-up. Quick Start programming screens automatically recognize each measurement input type and prompts the user to configure each sensor loop in just a few quick steps for fast commissioning. The measurement capabilities of the analyzer include single or dual-measurement of pH, ORP, ISE (Ion-Selective Electrodes), resistivity/conductivity, percent concentration, total chlorine, free chlorine, monochloramine, dissolved oxygen, gaseous oxygen, dissolved ozone, turbidity, pulse flow and temperature, and accepts and scales 4-20mA current input(s) from any device, powered or unpowered.

Emerson Process Management, Pittsburgh, PA 15238. www.emersonprocess.com or call 787-782-9955

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