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Limits and Scanners

PM PLUS™ PID & Integrated Limit Controller


Watlow’s PM PLUS™, the enhanced EZ-ZONE® PM, is now more intuitive and features an enhanced interface for easier programming and readability with a SMOOTH-TOUCH™ keypad creating an industry leading user experience. The PM PLUS is backwards compatible with legacy EZ-ZONE PM controllers but offers many user upgrades including an intuitive menu flow allowing the controller to be easily configured. It also continues to offer the industry leading Bluetooth® connectivity with the EZ-LINK™ mobile app for remote access capability and full descriptions of parameters and error codes. The PM PLUS improves the user experience by reducing the complexity at the front of the control while eliminating the dependency of cables when configuring the product.

EZ-ZONE® PM Limit Controller


The EZ-ZONE PM panel mount limit controllers from Watlow® offer control options to reduce system complexity and the cost of thermal loop ownership. The EZ-ZONE PM limit controller provides high amperage power controller output and over/under limit control in one space saving, panel mount package.

Because EZ-ZONE PM limit controllers are scalable, the customer only pays for what is needed. This controller is available in 1/32, 1/16, 1/8 and 1/4 DIN panel mount packages.

RM Limit Module


The EZ-ZONE®RM high-density limit module used in conjunction with the EZ-ZONE RM temperature control module and high-density control module offer agency approved over and under temperature limit function to ensure system safety. The EZ-ZONE RM high-density limit controls 4, 8, or 12 limit loops per module or up to 192 limit loops per system.

SERIES LF and LV Temperature Limit


Watlow's family of micro processor-based temperature limit controllers provide an economical solution for applications requiring temperature limit control. Temperature limit controllers are available in a broad range of packaging options, allowing selection of the best version for an individual application. Temperature limit controllers are available without an operator interface and can be ordered in square 1/8 DIN-panel mount, DIN-rail mount or open board design configurations.

The SERIES LF limit controllers offers fixed set points and can be supplied with or without an operator interface. Operating set point temperature values are customer defined in the product configuration part number.

The LF temperature limit controllers are factory mutual (FM) approved with special UL® approval for the open board potted versions. Watlow's temperature limit controllers include industry leading service and support and are protected by a three-year warranty.

EZ-ZONE® PM Express Limit Controller


The EZ-ZONE PM Express panel mount limit controller from Watlow’s family of limit controls is an industry leading limit controller that allows for optimal performance utilizing simple over/under limit control and menu functionality without complex features. The EZ-ZONE PM Express limit controller is ideally suited for basic applications and usage levels.

The EZ-ZONE PM Express limit controller is the next generation of controllers leveraging the strong legacy of Watlow's SERIES 94, SERIES 945 and SERIES SD limit controllers where easy-to-use features are needed for basic applications. It includes one universal input and the option for up to two outputs and is available in 1⁄32 and 1⁄16 DIN panel mount limit controls packages.

The EZ-ZONE PM Express limit controls are a great addition to the EZ-ZONE PM family which includes two other controller versions, the EZ-ZONE PM integrated controller and the EZ-ZONE PM temperature and process controller. This family provides an ideal platform to perform many applications.