Extech Instruments 407907, User Manual

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407907-EN v1.5 10/13 3
Meter Description
1. RTD probe connector
2. RS232 connector
3. LCD display
4. Keypad
5. RTD probe (Sold separately)
6. Battery compartment (rear)
7. Protective holster
Operation
Connecting the optional RTD probe
Plug the optional 4-wire RTD probe(sold separately) into the jack at the top of the meter. The jack is
keyed and can only be inserted one way. Use care when inserting the probe.
Powering the meter
To power the meter, slide the OFF/ON switch to the ON position. If the display remains blank, check
the 9V battery (rear compartment). Slide the switch to the OFF position to turn the meter off.
Remove the battery if the meter is to be stored for long periods.
Selecting units of measure
Press the
o
F/
o
C button to select the desired temperature units. The LCD display will show the
o
C or
the
o
F symbol to indicate the currently selected unit of measure.
Selecting the resolution
The meter offers 0.1
o
and 0.01
o
display resolution. To select the resolution use the 0.01
o
/0.1
o
switch. The display will reflect the currently selected resolution. Use the specifications shown earlier
in this manual to determine the best resolution for the measurement range of a given application.
Taking measurements
Once the meter has been setup and a probe has been inserted in the jack at the top of the meter,
place the temperature probe in the area under test. Give the meter several seconds to stabilize.
Read the temperature measurement on the LCD. If dashes appear on the display, either the
reading is out of range or the RTD probe is not connected (or defective).
Maximum and Minimum (MAX/MIN) Record and Recall
When selected, the recording function stores the MAX/MIN readings for later recall.
1. Press the
RECORD button once. The RECORD indicator will appear on the display.
2. After readings are taken, press the RECALL button to view the maximum reading. The MAX
indicator will appear on the display to inform the user that the reading now on the display is the
highest reading since the
RECORD button was first pressed.
3. Press the RECALL button again to view the minimum reading. The MIN indicator will appear on
the display to inform the user that the reading now on the display is the lowest since the
RECORD button was first pressed.
4. To return to normal operation, press the RECORD button again. The RECORD, MAX, and MIN
indicators will extinguish.