2 Making Measurements76 Keysight U1253B User’s and Service GuideMeasuring TemperatureThe bead-type thermocouple probe is suitable for measuring temperatures from–20 °C to 200 °C in PTFE-compatible environments. Do not use the thermocoupleprobe beyond the recommended operating range. Do not immerse thisthermocouple probe in any liquid. Use a thermocouple probe designed for eachspecific application — an immersion probe for liquid or gel, and an air probe for airmeasurement.Set up the multimeter to measure temperature as shown in Figure 2-17 orobserve the following steps:1 Press to select temperature measurement.2 Connect the miniture thermal probe into the non-compensation transferadapter as shown in Figure 2-15. Then connect the thermal probe with theadapter into the meter input terminals as shown in Figure 2-16.3 For best performance, place the meter in the operating environment for atleast one hour to stabilize the unit to environment temperatures.4 Clean the surface to be measured and ensure that the probe is securelytouching the surface. Remember to disable the applied power.5 When measuring above ambient temperatures, move the thermocouple alongthe surface until you get the highest temperature reading.6 When measuring below ambient temperatures, move the thermocouple alongthe surface until you get the lowest temperature reading.7 For quick measurement, use the 0 °C compensation to view the temperaturevariation of the thermocouple sensor. The 0 °C compensation assists you inmeasuring relative temperature immediately.CAUTION Do not bend the thermocouple leads at sharp angles. Repeated bendingover a period of time can result in the leads breaking.
