Operation - Extech Instruments TM200 User Manual

Operation

Connecting thermocouples
1. This meter accepts one or two thermocouples. Only type K thermocouples with spade
plugs (sub-miniature type with one spade wider than the other) may be used.
2. Plug one thermocouple into the meter's T1 input jack and optionally plug another
thermocouple into the meter's T2 input jack.
Turn Power ON
1. Press the button to turn the meter on.
2. If a probe is not inserted to the meter, dashes "-----" will appear on the display.
o o
Selecting C / F / Kelvin (
o o
Use the C / F / K button to select the desired unit of measure.
Taking Measurements
Hold the thermocouple in air or touch the tip of the thermocouple to a device under test
and read the temperature on the meter's LCD. If the measured temperature exceeds the
meters high or low limits, 'OL' will appear in place of a temperature reading.
Important Note: The supplied thermocouples are rated for 500
higher temperatures, a high-temperature Type K thermocouple (not supplied) must be
used.
Display resolution
The meter has a 0.1
o
1 for temperatures 1000
Selecting T1, T2, and T1-T2 Displays
Use the T1, T2, T1-T2 button to select the desired display configuration
•
When the meter is turned on, the T1 thermocouple reading is displayed on the
primary display and the T2 reading is displayed on the secondary (smaller display).
•
First press of the button: The T1 and T2 displays switch places (the T2 reading is now
on the primary display and the T1 reading is on the secondary display)
•
Second press: The differential (T1-T2) is shown on the primary display and the T1
temperature reading is shown on the secondary display.
•
Third press: The differential value (T1-T2) is shown on the primary display and the T2
temperature reading is shown on the secondary display.
•
Fourth press: The display configuration loops back to the start up condition (the T1
reading is displayed on the primary and the T2 reading is displayed on the secondary)
Backlight
Press the backlight button to switch on the LCD display backlight. Press the button
again to turn the backlight off. Judicious use of the backlight feature will conserve battery
power.
Data Hold
Press the HOLD button to freeze the readings in the display. The 'HOLD' icon will appear
above the temperature reading on the display. Press the HOLD button again to return to
normal operation (the 'HOLD' hold icon will disappear).
Tripod Mount
The tripod mounting connector is located on the back of the meter. Tripods are available
through Extech Instruments distributors.
o
K) unit of measure
o
resolution on displays ranging from 0.1
o
and higher.
o
F (260
o
to 999.9
3
o
C). To measure
o
. The resolution is
TM200 V4.1 11/06