Catalog excerpts
Electric Heaters > This Application Guide is to assist youin understanding the principles of electric thermal systems and compo-nents as they apply to various heating tasks. Its purpose is to give you theory, general calculations and engineering data along with examplesfor solving heating problems. ThisApplication Guide is not a how-tomanual or a substitute for specific information related to complex and/or critical applications. Watlowengineers are available to provide you detailed information on engineeringapproaches not included in this guide.When designing any thermal system,caution must always be exercised to comply with safety requirements, localand/or national electrical codes,agency standards, considerations for useintoxic or explosive environmentsand sound engineering practices.Integrity and suitability of any thermal system design/specification is ultimately the responsibility of those selecting and approving system components.This Application Guide is organizedinto sections dealing with the basicfacets of an electric thermal system: the electric heaters, temperaturesensors andtemperature and powercontrollers. Information about wiringpractices along with reference dataand examples are also provided.As always, Watlow Electric Manufac-turing Company stands ready to provide you advice or engineeringexpertise to design and producecomponents to meet your electric heating requirements. Temperature Controllers Temperature Sensors > Product Overview. . . . . . . . . . . . . . . . 74Thermal Control Principles. . . . . . . . 81Control Output Types. . . . . . . . . . . . . 88Control Output Comparison. . . . . 90Limit Control Protection forTemperature Process. . . . . . . . . . . . . 93Agency Recognition for Controllers. . . . . . . . . . . . . . . . . . . 94Control System Tuning. . . . . . . . . . . . 94Typical Thermal Control System Chart Recordings. . . . . . . . . . . . . . . . 97Controller Overview. . . . . . . . . . . . . . 99Data Communications. . . . . . . . . . . . 100 Customer Assistance > Manufacturing Facilities. . . . . . . . . . . . 3 Sales Offices. . . . . . . . . . . . . . . . . . . . .4Product Overview. . . . . . . . . . . . . . . . 34Contact Temperature Sensors Types and Comparisons. . . . . . . . . . . 36Thermocouples. . . . . . . . . . . . . . . . . . 37 Product Overview. . . . . . . . . . . . . . . ..7Power Calculations. . . . . . . . . . . . . . . 15Power Evaluation. . . . . . . . . . . . . . . . . 19Review of Heater Application Factors. . . . . . . . . . . . . . . 20Select Heater. . . . . . . . . . . . . . . . . . . . 22Reference Data. . . . . . . . . . . . . . . . . . 24Heat Loss Factors and Graphs. . 26Quick Estimates of Wattage Requirements. . . . . . . . . 30 Resistance Temperature Detectors(RTDs). . . . . . . . . . . . . . . . . . . . . . . . . . 49Thermistors. . . . . . . . . . . . . . . . . . . . . 52Non-Contact Temperature Sensor Basics. . . . . . . . . . . . . . . . . . . 54Defining an Application andDetermining a Solution. . . . . . . . . . . . 60Reference Data. . . . . . . . . . . . . . . . . . 61Thermocouple and Resistance Wire RTD Initial Calibration Tolerances. . . . . . . . . . . . . . . . . . . 61RTD Resistance vs. TemperatureTables (Standard Thermistors). . 63RTD Resistance vs. TemperatureTables (DIN Platinum RTDs). . . . . 70 1 size="-1">
Open the catalog to page 1Power Controllers Reference Data Glossary > Celsius to Fahrenheit / Fahrenheit to Celsius. . . . . . . . . . . . 127Ratings of Listed Heater VoltagesOperated on Other Voltages. . . . . . . 129Conversion Factors. . . . . . . . . . . . . . 130Commonly Used Geometric Areas and Volume. . . . . . . . . . . . . . . 133Physical Properties of Solids, Liquids and Gases. . . . . . . . . . . . . . 134Properties of Non-Metallic Solids. . . . . . . . . . . . . . . . . . . . . . 134Properties of Metals. . . . . . . . . . 137Properties of Metals in Liquid State. . . . . . . . . . . . . . . . ....
Open the catalog to page 2Hannibal, MissouriWatlow Hannibal Manufactures: Circulation Heaters ՕDuct Heaters Immersion HeatersՕMulticell HeatersTubular HeatersՕThick Film Heaters#6 Industrial Loop RoadP.O. Box 975 Hannibal, MO 63401Phone: 573-221-2816FAX: Tubular/Process/Multicell 573-221-3723FAX: Thick Film573-221-7578 > Richmond, IllinoisWatlow Richmond Manufactures: RTDs, Thermocouples, Thermistors ՕThermocouple Wire and Cable Temperature Measurement Devices5710 Kenosha Street, P.O. Box 500Richmond, IL 60071Phone: 815-678-2211FAX: 815-678-3961 Winona, Minnesota - ControlsWatlow Winona, Inc. Manufactures: ՕCustom...
Open the catalog to page 3Latin American ManufacturingFacilities MexicoWatlow de Mexico, S.A. de C.V. Manufactures: FIREROD Heaters (Cartridge and Metric)ՕCeramic Knuckle HeatersTHINBAND > ItalyWatlow Italy, S.r.l. Manufactures:ՕThermocouplesVia Meucci 1420094 Corsico - MI, ItalyPhone: 39-02-4588841FAX: 39-02-45869954 European Manufacturing Facilities(cont.) GermanyWatlow GmbH Manufactures: ҕCable HeatersCartridge Heaters(FIREROD, EB Cartridge and Metric FIREROD)ՕSilicone Rubber HeatersK-RING > ծ HeatersHV Band Heaters ՕSilicone Rubber Heaters Tubular Heaters ՕCable HeatersAv. Epigmenio Gonzalez No. 5 Col. Parques...
Open the catalog to page 45514 Meadow Pine Ct.Orlando, FL 32819Phone: 407-351-0737Fax: 407-351-6563 > Seattle Kansas City 1420 NW Gilman Blvd., Suite 2571Issaqua, WA 98027Phone: 425-222-4090Fax: 425-222-5162 Philadelphia P.O. Box 15539Lenexa, KS 66285-5539Phone: 913-897-3973Fax: 913-897-4085 85 Old Dublin PikeDoylestown, PA 18901-2468Phone: 215-345-8130Fax: 215-345-0123 Shreveport Los Angeles 149-1⁄2 Ockley DriveShreveport, LA 71105Phone: 318-864-2864Fax: 318-864-2864 1914 West Orangewood AvenueSuite 101 Orange, CA 92868-2005Phone: 714-935-2999Fax: 714-935-2990 Phoenix 14830 North 10th StreetPhoenix, AZ...
Open the catalog to page 5Sales Territory: All Other European Countries ItalyWatlow Italy, S.r.l. Via Meucci 1420094 Corsico - MI, ItalyPhone: +39-02-4588841Fax: +39-02-45869954Sales Territory: Italy United KingdomWatlow Limited MexicoWatlow de Mexico S.A. de C.V. Robey Close Linby Ind. Estate Linby Nottingham England, NG15 8AAPhone: +44 (0) 115 964 0777FAX: +44 (0) 115 964 0071 Sales Territory: Great Britain, Ireland Latin American Sales Office Av. Epigmenio Gonzalez No. 5 Col. Parques Industriales Querataro CP-76130 Queretaro, MexicoPhone: + 52 442 217-62-35FAX: + 52 442 217-64-03 Canadian Sales Offices Sales...
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