Contact Temperature Measurements; Autoranging/Manual Range Selection; Relative Mode; Display Backlight - Extech Instruments 430 User Manual

CONTACT TEMPERATURE MEASUREMENTS

1. Set the function switch to the black Type K ºC or ºF position.
2. Insert the Temperature Probe into the input jacks, making sure to observe the correct polarity.
3. Touch the Temperature Probe head to the part whose temperature you wish to measure. Keep the
probe touching the part under test until the reading stabilizes (about 30 seconds).
4. Read the temperature in the display.
Note: The temperature probe is fitted with a type K mini connector. A mini connector to
banana connector adaptor is supplied for connection to the input banana jacks.

AUTORANGING/MANUAL RANGE SELECTION

When the meter is first turned on, it automatically goes into AutoRanging. This automatically selects
the best range for the measurements being made and is generally the best mode for most
measurements. For measurement situations requiring that a range be manually selected, perform
the following:
1. Press the RANGE key. The AUTO display indicator will turn off.
2. Press the RANGE key to step through the available ranges until you select the range you want.
3. To exit the Manual Ranging mode and return to AutoRanging, press and hold the RANGE key for
2 seconds.
Note: Manual ranging does not apply for the Capacitance, Frequency and Temperature functions.

RELATIVE MODE

The relative measurement feature allows you to make measurements relative to a stored reference
value. A reference voltage, current, etc. can be stored and measurements made in comparison to
that value. The displayed value is the difference between the reference value and the measured
value.
1. Perform the measurement as described in the operating instructions.
2. Press the REL button to store the reading in the display and the "REL" indicator will appear on
the display.
3. The display will now indicate the difference between the stored value and the measured value.
4. Press the REL button to exit the relative mode.
Note: The Relative function does not operate in the Frequency function.

DISPLAY BACKLIGHT

Press the key for to turn on or off the display backlight function.
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