Limits and Alarms Controllers

Single-Loop Limit Controllers Watlow limit controllers provide agency approved performance in safety limit applications, including UL®, CSA, A.G.A. and FM (on some models). All are available with industry standard I/O options. All Watlow limit/alarm controllers are designed and manufactured to withstand harsh industrial environments, and come with a three-year warranty for Control Confidence®.

Controller	DIN Size	Accuracy	Operating Environment
SERIES LV	Open board, DIN-Rail or 1/8 DIN square	±1.00%	0 to 70°C (32 to 158°F)
SERIES LF	Open board, DIN-Rail or 1/8 DIN square	±1.00%	0 to 70°C (32 to 158°F)
SERIES SD_L	1/32 to 1/4 DIN	±0.10%	-18 to 65°C (0 to 149°F)
SERIES SD6L_D	1/16 DIN Panel	±0.10%	-18 to 65°C (0 to 150°F)
SERIES 97	1/16 DIN	±0.10%	0 to 65°C (32 to 149°F)

Multi-Loop Limit and Alarm Scanners The Watlow multi-loop limits and alarms are a low-cost solution for multi-channel, redundant temperature monitoring. These limits and alarms can continuously monitor thermocouples, RTDs or thermal switches, making them ideal for multi-zone applications.

Controller	DIN Size	Function	Accuracy	Operating Environment
TLM-8 Thermal Limit	Panel or DIN-Rail mountable	Limit	±5% of limit at 25°C	0 to 60°C (32 to 140°F)
CAS200 Alarm Scanner	1/8	Alarm	0.07% at 25°C	0 to 50°C (32 to 120°F)

Applications
Any process requiring multi-channel redundant temperature monitoring Semiconductor capital equipment	Electronics packaging equipment Plastics injection molding and extrusion equipment

Tell us about your application so we can recommend the best controller for your needs. Click the button to the left to complete the form.

Product Information

Click on the below links for more product information. PDF documents require Adobe^® Reader^® version 7 or higher for viewing.

Specification Sheets & Brochures Size/Pages

Basic Temperature and Limit Controllers 102K / 4   (PDF)  CAS200 Scanner 405K / 4   (PDF)  EHG SL10 Process Controller and Safety Limit 783K / 4   (PDF)  EM Gateway 124K / 2   (PDF)  Plastics Processing 3,654K / 16   (PDF)  SERIES 94 110K / 2   (PDF)  SERIES 97 117K / 4   (PDF)  SERIES SD - Series SD Controller Family 344K / 4   (PDF)  SERIES SD6_D - Series SD 1/16 Din PID Controller with DeviceNet Communications 89K / 2   (PDF)  TLM-8 Thermal Limit Monitor 89K / 2   (PDF)  Thermal Solutions for Foodservice Equipment 2,010K / 6   (PDF)  WATCONNECT Software 69K / 1   (PDF)  WATVIEW HMI Software 765K / 2   (PDF)

Related News Releases and Newsletters Date

Watlow's On-off Temperature and Limit Controllers Now RoHS Compliant 03-24-08  Watlow's SERIES SD PID Temperature Controllers Now Feature TRU-TUNE+™ ... 10-11-06  SERIES SD from Watlow Provides Affordable, Accurate Temperature Control 03-08-04  Economical Temperature and Limit Controllers Designed for Simple On-Off ... 08-28-03  Watlow to Introduce New Heating, Sensing and Control Products at NPE 2003 03-17-03  Watlow to Introduce New SD SERIES Controllers at Interplas 2002 09-11-02  Watlow Offers Protection for Over-Temperature Hazards with NEMA 4X Rating 09-01-97  Watlow Offers an Over-Temperature Limit Controller that can be Customized ... 08-01-97  Watlow Offers Multi-Channel Thermal Limit Monitor, Ideal For Multi-Zone ... 06-02-97  Compact Alarm Scanner (CAS200) from Watlow Anafaze for Low Cost Alarm ... 06-02-97

Product Technical Information Size/Pages

CAS200 User's Guide, Rev 3.0, July 2001 1,191K / 124  (PDF)  CLS200, MLS300 and CAS200 Communications Specification, Rev 3.0, November 2003 656K / 92  (PDF)  EM Gateway User's Manual 0600-0040-0001 Rev D 671K / 28  (PDF)  EZ-ZONE PM Integrated Controller User Manual Rev C 3,341K / 80  (PDF)  EZ-ZONE PM Limit Controller User Manual Rev. C 3,157K / 60  (PDF)  Engineering Bulletin Over/Undertemperature Protection, Rev D, September 2003 81K / 2  (PDF)  Modbus RTU Example in Visual Basic 6.0 (.zip file) 23K / 0   SDAC User's Guide Rev 4.0 December 2004 237K / 4  (PDF)  SERIES 146 Retrofit Guide 402K / 118  (PDF)  SERIES 146 Retrofit Guide and User's Manual 402K / 118  (PDF)  SERIES 92 Retrofit Guide and User's Manual 315K / 63  (PDF)  SERIES 92 User's Manual, DIN Rail Mount Limit or Temp Control, Rev B, March 1998 217K / 13  (PDF)  SERIES 94 User's Manual, 1/16 DIN Limit Controller, Rev C June 2002 620K / 40  (PDF)  SERIES 96/97 Instruction Sheet, Field-Expandable Output Modules, Rev A, September ... 104K / 1  (PDF)  SERIES SD Family Calibration Manual, Rev A, August 2003, 0600-0041-0030 156K / 8  (PDF)  SERIES SD Limit EDS File (SD6L-XJXA-DNXX), Rev 2.1 26K / 1   SERIES SD Limit EDS File (SD6L-XJXA-DSXX), Rev 2.1 26K / 6   SERIES SD Limit, Rev. B, November 2004 1,026K / 60  (PDF)  Series 97 User Manual Rev E July 2005 1,085K / 88  (PDF)  Series L Temperature Limit - Rev. G 2/2008 1,050K / 20  (PDF)  Series SD6 Limit With Devicenet Rev B May 2005 108K / 21  (PDF)  TLM-8 User's Guide, Rev D October 2007 404K / 8  (PDF)  Use of Temperature Safety Limits in the Semiconductor Industry 32K / 3  (PDF)  WATVIEW User Manual rev B; June 2004 3,750K / 36  (PDF)

Adobe^® is a registered trademark of Adobe Systems Incorporated.

UL^® is a registered trademark of Underwriter's Laboratories, Inc.