UIT2400 INSTRUMENTATION MANUAL REV A, May 2020
5 OF 18
icon.
7. The reading window will open in current mode and begin displaying measurements in
amps. Users can program their own settings to allow the window to open with the preferred
display.
8. The display will darken after a few minutes of inactivity to conserve battery power.
Touching the screen will return the screen to full brightness based on the brightness
settings. (see 15N & 15O to change display dimming/off settings)
3F. Quick Start – Common Problems:
The two most common causes of error are incorrect
calibration factor use and improper zero. It is a good practice to verify the correct calibration
factor is in use before taking measurements. It is equally as important to assure a proper zero
has been performed.
3F1. Calibration Factor Verification.
Locate the calibration factor on the detector
calibration certificate below the model and serial number fields in the top third of the report.
Example:
From the home screen select settings, scroll to the calibration factor selection window.
Verify the sensitivity factor and units are correct. If not, touch the selection window and a
scroll menu will appear, select a new channel until you find the correct sensitivity factor as
noted on your certificate. (If you do not locate your calibration factor and units from the
certificate, go to 5D to learn about
adding/changing calibration factors)
Touch the back button to return to the home screen.
3F2. Zero:
There are two kinds of zero that can be used to improve accuracy. A
dark zero
is used to remove small ambient noise caused from the environment. With the sensor
plugged in and covered with an opaque object, press the zero button. This reading will be
subtracted from all future readings to provide a zero reading. An
ambient zero
is used to
subtract small background light levels that are not coming from the test source. With the
test source off or blocked and the sensor exposed to the environment/ambient light, press
zero. Place the un-covered sensor in the test location. Cover the test light source, or turn it
off. Press Zero. The UIT2400 will take a measurement and subtract that value from all
future readings until zero is pressed again.
3G. Quick Start Feature Overview:
3G1. Display resolution:
The < - and- > buttons below the display will allow the user the
control how many digits are displayed. i.e. 0.11 changes to 0.1111.
3G2. Display Units:
Toggles between the available fields; current, light level, OD, and %
trans.
