nced features include the implementation of EIA 485 Modbus serial communications, Watlow’s Infosenset sensor technology, infrared remote communications operation, Watlow’s patented User Definable Menu System, and a ‘Save and Restore’ feature that allows the restoration of either factory or user-defined settings. With pre-loaded instant HMI (human-machine interface) software, a Palm-brand handheld PDA device can be used to remotely program and control the Watlow Series SD controller. The wireless Infrared Data Communications option can support configuration and operation to facilitate recipe management and data logging and allows easier controller setup, operation, and monitoring. Devices are available in 1/32nd, 1/16th, 1/8th and 1/4 DIN panel-mount sizes. www.watlow.com Watlow

Control for harsh use

Commander line of single loop process controllers from ABB Instrumentation offers simple-to-highly-advanced control strategies and withstands harsh environments. Panel configurations include 1/16, 1/8, and 1/4 DIN; 3 x 6-in. units, and a wall/pipe mount. Most models can be configured using ABB Commander PC software, providing a fast and simple way method to set up the controllers. All can be linked to a central PLC or SCADA system using the Modbus protocol. Many standard features and options can match virtually any application. The Commander 100 1/8 DIN process controller, for example, comes with universal inputs for such process variables as temperature, pressure, flow, and level. Analog, relay and logic outputs, alarms, ramp/soak profiles, and PID control are standard. Addition of a remote setpoint option permits two or more units to operate in a master/slave (cascade) configuration. Other variants offer direct control of motorized valves and reduced case depth for installation and panel savings. www.abb.us/instrumentation ABB Instrumentation

Single, dual-loop vs. system

Single- or dual-loop microprocessor-based controllers can offer PID, velocity limiting, and lead/