SERIES SD  Limit Controls

Controllers Provide Value and

Accurate, Cost-Effective

Limit Control

Product Spec Sheet In Acrobat Format

Product User Manual

The SERIES SD family of limit controllers has been designed with the same microprocessor-based technology as the SERIES SD PID family of temperature controllers. The limits come with the FM (Factory Mutual) agency approval — the industry’s most recognized designation for insurance concerns.

Limit controllers are typically added to thermal applications to monitor an over-temperature condition as a safety precaution.Limit controllers provide a redundant safety assurance to guard against instances where a high temperature runaway condition could result from a shorted input sensor, or from an output device that fails in a closed position.

Limits are recommended and are often required in applications where thermal runaway could result in costly operator safety concerns, product scrap, damage to capital equipment or a fire hazard.

Advanced features include EIA 485 Modbus serial communications, InfoSenseTM technology, Infrared Remote communications operation, a patented User Definable Menu System which allows the user to select which parameters will appear in the Operations Menu, and a “Save and Restore”  feature that allows the user to save and restore their settings – not just the factory settings!!

WatviewTM, Watlow’s WindowsR based HMI (Human Machine Interface) software, supports the Series SD controllers.  The software can be used to setup, monitor, and edit the values of controller parameters, to monitor and manage alarms, and to log and graph process data.

Available in 1/32, 1/16, 1/8 and ¼ Din Panel mount sizes, the Series SD products include UL, c-UL, CSA, CE certification and include a NEMA 4X (IP65) seal.

The Series SD is manufactured by ISO 9001 registered Watlow Controls and is backed by a 3-year Warranty