Limits and Scanners

Watlow single- and multi-loop limits provide cost-effective solutions for single- and multi-channel, temperature monitoring. Limits monitor the process value where thermal system protection is needed, closing a contact output for normal operation and opening that contact to shut down the process or equipment when the value is outside the safe range.

Various configurations offer user-selectable or fixed-configuration sensor options including thermocouple, process, RTD and thermal switch inputs as well as user-settable or fixed limit values. Models with displays have user-selectable temperature units. Other features include sensor break protection, industry standard I/O options and UL^® and CSA approval. EZ-ZONE models are RoHS compliant. Limits have FM approval for performance in safety limit applications. Watlow limits are designed and manufactured to withstand harsh industrial environments and come with a three-year warranty.

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EZ-Zone RM High-Density Limit

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.

EZ-Zone RM High-Density Scanner

The EZ-ZONE^® RM high-density scanner module can be used in conjunction with any EZ-ZONE RM family module as a monitor or to provide additional logic function to a system. The scanner module can also be used as a stand alone product for multiple inputs of monitoring applications. The EZ-ZONE RM high-density scanner module provides 4, 8, 12 or 16 loops of monitoring per module or up to 256 monitoring loops per system

EZ-Zone PM

The Watlow EZ-ZONE PM Temperature Controller offers control options to reduce system complexity and the cost of thermal loop ownership. You can order the EZ-ZONE as a PID controller or an over/under limit controller, or these functions can be combined into an integrated controller.

With the EZ-ZONE PM, you now have the option to integrate a high amperage power controller output with a high-performance PID controller and an over/under limit controller in one space-saving, panel mount package. A number of serial communication options are available to the EZ-ZONE PM to support your connectivity needs.

Available in 1/32, 1/16, 1/8 and 1/4 DIN panel mount packages, the EZ-ZONE PM is highly scalable and you only pay for what you need. If you are looking for a PID controller, an over / under limit controller, or an integrated controller, the EZ-ZONE PM will make your life easier.

EZ-Zone PM Express Limit

The Watlow EZ-ZONE PM Express controller is an industry leading panel mount PID controller that allows for optimal performance utilizing simple control and menu functionality without complex features. The EZ-ZONE PM Express controller is ideally suited for basic applications and usage levels.

The EZ-ZONE PM Express is the next generation of controllers leveraging the strong legacy of Watlow’s SERIES 93, SERIES 935 and SERIES SD 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, 1/16, 1/8 or 1/4 DIN panel mount packages. The EZ-ZONE PM Express can be ordered as a PID process controller or a dedicated limit temperature controller.

If you are looking for a simple and easy-to-use basic PID controller or an over and under limit controller, the EZ-ZONE PM Express will be the ideal controller to use.

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Series LV

Watlow’s microprocessor-based temperature limit controller provides an economical solution for applications requiring temperature limit control. Limits are available in a broad range of packaging options, allowing selection of the best version for an application. The temperature limit controller Series LV is available with an operator interface and can be ordered in 1⁄8 DIN-square panel mount or DIN-rail mount design configurations. The variable SERIES LV temperature limit controller includes an operator interface for viewing and selecting the set point. A red, four-character seven segment LED displays the set point. Set point selection is made with a continuous turn rotary encoder. Operating range temperature values are customer defined in the product configuration part number. The temperature limit controllers are factory mutual (FM) approved with special UL® approval for the open board potted versions. Watlow’s limit controllers include industry leading service and support and are protected by a three-year warranty.

Series LF

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.