GeneralInformation

Application Hints

Answering your mostfrequently asked questions about industrial temperature sensors.

•Which temperature sensor is the best choice for my application? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13•What do thermocouple letter designations mean? . . . . . . . . . . . .14•What are thermocouple color codes? . . . . . . . . . . . . . . . . . . . . . .15•What letter of calibration should I use? . . . . . . . . . . . . . . . . . . . . .16•What is the initial accuracy of temperature sensors? . . . . . . . . .17•How does Watlow check for thermocouple accuracy? . . . . . . . .19•Is there a maximum length for thermocouples and thermocouple wiring? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19•What sheath material is the best for my application? . . . . . . . . .20•What are the maximum temperatures of thermocouples? . . . . . .21•What type of junction should I use? . . . . . . . . . . . . . . . . . . . . . . . .22•What is the response time of mineral insulated thermocouples? . . . . . . . . . . . . . . . . . . . . . . . . .23•What should the thermocouple resistance measure? . . . . . . . . .24•Where should my sensor be placed? . . . . . . . . . . . . . . . . . . . . . . .25•How does electrical noise get in? . . . . . . . . . . . . . . . . . . . . . . . . . .26•The sensor appears to be reading incorrectly, what might be wrong? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27•How do I install a sensor with spring loaded bayonet cap? . . . .29 12 This section gathers in one spot themost commonly requested informa- tion on industrial temperature sensors. People of all experience levels will gain a better understand- ing in the application of temperature sensors from this information. Although we cannot possibly address every question in a few short pages, Watlow provides com- plete product support through ourcustomer service, sales engineersand distribution network.