Sper Scientific 800043 Ultimate Thermometer User Manual

Page 4

DISTURBANCE - Objects with low emissivity or objects with a low

temperature and high emissivity, emit little infrared energy. For this
reason, measurement of these
objects is affected by infrared
energy radiated from nearby
objects with high emissivity or
high temperatures.

When such objects are measured
in sunlight for example, radiated
energy from the sun is reflected by
the surface of the object and
received by the sensor. Use a
shielding plate to block outside
infrared energy.

CALIBRATION - Check the unit against a known

standard. If the value has drifted, press and hold
down both the HOLD (5) and REC (6) buttons.

The temperature reading and the small digits in
the lower right corner will display the same value.

Continue pressing the HOLD and REC buttons
while using the ×up (7) or Ødown (4) buttons to
adjust the temperature reading to your standard.
The small digits retain your pre-calibration reading.
Release all buttons when you have reached the
adjusted temperature.

After releasing the buttons, the small digits will
disappear in Thermocouple or RTD modes and
the calibration is complete. In IR mode, the preset
emissivity will be displayed.

NOTES

•

If the object you are measuring is covered with frost, clear the frost to
expose the object's surface before taking the measurement.

•

If the surface you are measuring is highly reflective, apply masking
tape or a paint that has a 0.95 emissivity.

•

The display may fluctuate if the meter is moved during measurement.

•

The unit will automatically compensate for ambient temperature.

•

For the most accurate measurement, allow the unit to adjust to the
ambient temperature for about 30 minutes before use.

•

When a low temperature is measured directly after a high temperature
has been measured, the display may take some time to stabilize.

Object

°F

0.95

°F