Commercial electric heaters, Electric heating elements, Heating elements, Industrial heaters  
Heaters
Sensors
Controllers
Single-Loop Limits & Alarms
Limits and Alarms Temperature ControllersWatlow 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 LF Open Board, DIN Rail or 1/8 DIN Square, potted case ±1.00% 0 to 70°C
(32 to 158ºF)
Series LV DIN Rail or 1/8 DIN Square Panel mount ±1.00% 0 to 70°C
(32 to 158ºF)
Series SD3L 1/32 DIN Panel ±0.10% -18 to 65°C
(0 to 150ºF)
Series SD6L 1/16 DIN Panel ±0.10% -18 to 65°C
(0 to 150ºF)
Series SD8L 1/8 DIN Panel ±0.10% -18 to 65°C
(0 to 150ºF)
Series SD4L 1/4 DIN Panel ±0.10% -18 to 65°C
(0 to 150ºF)
Series 97 1/16 DIN Panel ±0.10% 0 to 65°C
(32 to 150ºF)
Series 142   ±1.00% 0 to 55°C
(32 to 131ºF)
Series 145 1/16 DIN Panel ±1.00% 0 to 55°C
(32 to 131ºF)
Series 146 DIN Rail Mount ±1.00% 0 to 55°C
(32 to 131ºF)
Series 147 Open Board ±1.00% 0 to 55°C
(32 to 131ºF)
TLM-8 Sub-Panel or DIN Rail 5% 0 to 60°C
(32 to 140ºF)
Applications
  • High and low safety limit control
  • Environmental chambers
  • Furnace/ovens
  • Semiconductor
  • Boiler
Application Request Form 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. Items that are PDF documents, require Adobe® Acrobat® Reader version 4 or higher for viewing.
 Product Specification Sheets Size/Pages
 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's Series of Low-Cost ON/OFF Controllers Offer a Variety of Mounting ... 07-01-97
 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 1,262K / 112  (PDF)
 CLS200, MLS300 and CAS200 Communications Specification, Rev 3.0, November 2003 736K / 92  (PDF)
 EM Gateway User's Manual 0600-0040-0001 Rev D 671K / 28  (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 92 User's Manual, DIN Rail Mount Limit or Temp Control, Rev B, March 1998 217K / 13  (PDF)
 Series 96/97 Instruction Sheet, Field-Expandable Output Modules, Rev A, September ... 104K / 1  (PDF)
 Series 97 User's Manual, Limit Controller, Rev D, February 2002 1,183K / 88  (PDF)
 Series L, Series LV, and Series LF Limit Controller User's Manual, Rev C, September ... 441K / 20  (PDF)
 Series SD Family Calibration Manual, Rev A, August 2003, 0600-0041-0030 156K / 8  (PDF)
 Series SD Limit Controller User's Manual, Rev A, December 2002 2,842K / 56  (PDF)
 Series SD6 Limit Controller 'S' Order Option EDS File (Electronic Data Sheet), ... 27K / 0 
 TLM-8 and TLM-8P User's Guide, Rev 3.0 November 2004 1,823K / 8  (PDF)
 Temperature Control, Educational Series Book 5, 1995 348K / 32  (PDF)
 WATVIEW User Manual rev B; June 2004 3,750K / 36  (PDF)

Adobe® and Acrobat® are registered trademarks of Adobe Systems Incorporated. UL® is a registered trademark of UnderwriterÂ’s Laboratories, Inc.

Top

Products Menu | Heaters | Sensors | Controllers