Fluke 07-402 User Manual
2
Operating Instructions
Measure Temperature
2-1
Section 2
Operating Instructions
2.1 Measure Temperature
Press the ON button. The unit will display “888.8” for 2 to 3 seconds, then display the
temperature. If there is no probe in the probe jack, the unit will display “LO”. Install the
temperature probe into the probe jack (located above the display) to measure temperature.
temperature. If there is no probe in the probe jack, the unit will display “LO”. Install the
temperature probe into the probe jack (located above the display) to measure temperature.
2.2 Display Min/Max Readings
The Portable Digital Thermometer will display the lowest and highest temperature readings
measured by the temperature probe since the unit was turned on. For example, while the unit is
on, the temperature being measured changes from 40º F to 100º F (4.4º C to 37.8º C), then
measured by the temperature probe since the unit was turned on. For example, while the unit is
on, the temperature being measured changes from 40º F to 100º F (4.4º C to 37.8º C), then
drops to 60º F (15.6º C). The display now shows 60º F (15.6º C). Press the MIN/MAX button. Dashes
will appear, then the MIN value 40º F (4.4º C) for a few seconds, then the MAX value 100º F (37.8º C) for
a few seconds, then back to the current probe temperature, 60º F (15.6º C). Note also that while the
MIN/MAX values are being displayed, the small characters on the right-hand side of the display will blank
out to indicate the MIN/MAX function. These characters will reappear when the actual probe reading is
back on the display.
will appear, then the MIN value 40º F (4.4º C) for a few seconds, then the MAX value 100º F (37.8º C) for
a few seconds, then back to the current probe temperature, 60º F (15.6º C). Note also that while the
MIN/MAX values are being displayed, the small characters on the right-hand side of the display will blank
out to indicate the MIN/MAX function. These characters will reappear when the actual probe reading is
back on the display.
2.3 Clear Min/Max Memory
Press the MIN/MAX button to display MIN/MAX values. While the MIN/MAX are showing on the display,
press the MIN/MAX button again. The display will show the letters “CL” to indicate that the memory has
been cleared. The Portable Digital Thermometer will then resume displaying the current probe
temperature on the display, and begin to store a new set of MIN/MAX values. If the unit is turned off,
MIN/MAX values will be cleared.
press the MIN/MAX button again. The display will show the letters “CL” to indicate that the memory has
been cleared. The Portable Digital Thermometer will then resume displaying the current probe
temperature on the display, and begin to store a new set of MIN/MAX values. If the unit is turned off,
MIN/MAX values will be cleared.
2.4 The “Hold” Function
To “freeze” the current temperature reading on the display, press the HOLD button once. The
temperature displayed will not change while the hold function is active. The display will alternate
showing the temperature, and the word HOLD to indicate the hold function is still active. To
temperature displayed will not change while the hold function is active. The display will alternate
showing the temperature, and the word HOLD to indicate the hold function is still active. To
return to normal mode, press the HOLD button once again.
2.5 Select Degrees C Display
The temperature scale is normally in degrees Fahrenheit. To display the temperature reading in
degrees Celsius, press the ºF/ºC button. A small letter “C” will appear at the right side of the
display to indicate readings in degrees Celsius.
degrees Celsius, press the ºF/ºC button. A small letter “C” will appear at the right side of the
display to indicate readings in degrees Celsius.