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TC-K THERMOCOUPLE MEASUREMENT
This feature is to measure temperature with K type thermocouple.
1. Press YELLOW button to toggle to T-C mode. The LCD display shows OL before the
thermocouple is connected.
2. Connect the K type thermocouple, press the trigger to start measuring. The LCD display
shows the reading.
3. Release the trigger, the reading is kept, LCD shows T-C. The temperature reading is shown
on the bottom of right hand side.
HOLD
The display will remain activated 8 seconds after the trigger is released. HOLD appears in
the upper middle of the display. When the trigger is pulled again, the Thermometer will begin
measuring in the last function selected.
This section describes a variety of measurements often performed by technicians.
Reminder:
- User could select to turn on or off the backlight and laser whenever you are making readings
with the Thermometer. But if you are using USB to power up the Thermometer, the two levels
white colour backlight will be on automatically.
- Relatively high emissivity normally means emissivity setting of about 0.95.
- Relatively low emissivity normally means emissivity setting of about 0.30.
- When user cannot identify the emissivity of the object to be measured, user could cover the
surface to be measured (temperature >150 ) with black electric tape (emissivity of about
0.95). Allow time for the tape to reach the same temperature as the object to be measured.
Measure and record the temperature of the tape.
Target the Thermometer to the object to be measured, adjust the emissivity setting to make it
as the same temperature as the tape. At this time, the Thermometer emissivity setting is close
to the emissivity of the object to be measured, measurement could be started.
TESTING CONTACTORS (STARTERS)
1. Press SET to select emissivity. Press
contacts, or 0.7 mid level for darkened contacts.
2. Press YELLOW button to select MAX.
3. Measure line and load side of one pole without releasing trigger
4. A temperature difference between the line and load sides of a pole indicate increased
resistance of one point and a contactor may be failing.
TESTING ENCLOSED RELAYS
1. Press SET and then press
or relatively high for plastic encased relays or for bakelite enclosed relays or insulated
connectors.
TYPICAL MEASUREMENTS
/
to select relatively low emissivity for bright
/
to set emissivity to relatively low for uninsulated connectors
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