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.

 

Product Max. limit loops Max monitor channels Mounting Agency Approvals Communication protocols
EZ-ZONE® RM High-Density limit 192 192 DIN-rail UL® , CSA, CE, RoHS, W.E.E.E. FM, SEMI F47-0200 Standard Bus, Modbus® RTU
EZ-ZONE® RM High-Density scanner 0 256 DIN-rail UL® , CSA, CE, RoHS, W.E.E.E. FM, SEMI F47-0200 Standard Bus, Modbus® RTU
EZ-ZONE® PM limit 1 1 1/32, 1/16, 1/8, 1/4 DIN front panel UL®, CSA, CE, RoHS, W.E.E.E., FM, SEMI F47-0200 Standard Bus, EtherNet/IP®, DeviceNet, Profibus, Modbus® TCP, Modbus® RTU
EZ-ZONE® PM Express limit 1 1 1/32, 1/16 front panel UL®, CSA, CE, RoHS, W.E.E.E., FM, NEMA 4X, IP66 front seal, SEMI F47-0200 Standard Bus
SERIES LV 1 1 DIN-rail, Front panel UL®, ANSI, NEMA 4X, 1P65, CE, CSA, FM, RoHS, W.E.E.E. (including potted version) n/a
SERIES LF 1 1 DIN-rail, Front panel UL®, ANSI, CE, CSA, FM, RoHS, W.E.E.E. (including potted version) n/a
TLM-8 1 8 DIN-panel UL®, C-UL®, CE, FM n/a

 
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