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6
Measuring Consideration of Temperature Measurement (Thermocouple)
• Make sure the polarity is correct when you plug a thermocouple probe
in the Temperature Input Socket (#8, above).
•
The temperature difference between thermocouple probe and thermometer
will cause an inaccurate measuring result. Therefore, for the best measuring
and accuracy performance, whenever changing a probe or plugging in a
new probe, thermal equivalence between the probe plug and meter’s input
socket is required. The thermal equivalent procedure may take few minutes
and only needs to be done when the probe has been exposed to an ambi-
ent temperature different from the meter.
Humidity & Ambient Temperature Measurement
1) Power on the instrument by pressing the “Power Button” (#1, page 5).
2) Select the Relative Humidity function by pressing “Function Button”
(#6, page 5).
3) Meanwhile the reading value of relative humidity and temperature will
be displayed on the LCD display.
4) When the meter is applied in a new environment, it will take a few
minutes to reach a stable condition.
Light Measurement
1) Power on the instrument by pressing the “Power Button” (#1, page 5).
2) Select the Light Measurement function by pressing the “Function
Button” (#6, page 5) until the light value is displayed. The light display
digits are oriented 180° from the other function displays for easy
exposure and output reading of the light sensor.
3) Press the “Lux/Ft-cd Button” (#5, page 5) to select measuring unit
“Lux” or “Ft-cd”.
Zero Offset Adjustment of Light Function
• For best results you should zero the light sensor prior to use in a dark
environment. To achieve this, place the light sensor end of the meter
under a desktop or at surface to block any light. Press the “Unit/Zero
Button” (#4, page 5) setting the meter indication to zero.
• The zero point can drift due to environment temperatures, battery
power, as well as various other reasons. It is recommended that the
zero be checked frequently using the above procedure.
