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General Operation
To turn ON
your Bullard QXT, depress the green power button located on top of the
unit. The screen will display the Bullard QXT logo and the green power button will
illuminate. A thermal image will appear within a few seconds. This image consists
of black, white, and grey elements which indicate heat signatures of objects and
scene dynamics. Warmer elements appear as lighter shades, while cooler elements
appear as darker shades.
NOTE:
You will periodically observe a momentary freeze in the imager. This is normal
and is a function of the self-calibration
shutter. The shutter will activate several
times during the first 5 minutes,
depending on the environment.
To turn OFF
your Bullard QXT, depress and hold
the power button until the “red” power icon
located in the top left of the display illuminates
and then
changes from red to green
. When
the icon changes from red to green,
release
and the unit will power off
.
System LED Indications
The power button LED will be illuminated when the imager is powered ON. In
addition, the same LED changes colors to communicate other system conditions
related to charging, as indicated below. Note that ONLY the green power indication
functions when the TI is not connected to a charging system (i.e. standalone
operation).
SOLID GREEN
Imager is powered ON (not charging)
SOLID GREEN Imager is fully charged (via desktop or truck mount)
PULSING GREEN Imager is “thinking” (charge system processing)
PULSING RED Imager battery is charging (via desktop or truck mount)
FLASHING YELLOW Error condition (problem with the TI or charging system)
On-Screen Indications
Heat Color Reference Bar
Indicates scene temperature (see Super Red Hot Colorization).
Sensitivity (Gain) Modes
The imager automatically switches between low and high sensitivity (gain) modes
based on ambient scene temperatures in order to protect the thermal sensor
from overload in high-temperature situations. The low sensitivity mode activates
in high-heat situations, and deactivates as ambient heat decreases (i.e. lower
temperatures). The low sensitivity mode indicator consists of a green triangle
located in the upper left of the viewing area.
Overheat Indicator
A visual warning flashes which indicates to the user that the thermal imager might
cease to operate due to internal overheating, as mandated by NFPA 1801 standard.
The imager’s internal electronics remain functionally useful within the range of
-20° C to 85° C.
Power Source Indicator (Battery Status Indicator)
(1) Four green segments displayed (76-100% charge)
(2) Three green segments displayed (51-75% charge)
(3) Two yellow segments displayed (26-50% charge)
(4) One red segment displayed (0-25% charge)
(5) One red segment flashing (at least 5 minutes of runtime remains)
Estimated operation time on fully charged power source in available mode.
FULL power (green)
4.5 ->6
hours
75% power (green)
3.0 - 4.5
hours
50% power (yellow)
1.5 - 3.0
hours
25% power (red)
1.5 hours
Will begin to flash when at least 5 minutes of
available power source remains (red)
> 5
minutes
NOTE:
(1) During operation the bar will deplete from left to right.
(2)
THE BULLARD QXT’S INTERNAL LITHIUM ION BATTERY PACK IS
DESIGNED FOR MAXIMUM LIFE WHEN THE BATTERY IS KEPT FULLY
CHARGED. BULLARD RECOMMENDS LEAVING THE QXT CONNECTED
TO YOUR PREFERRED CHARGING SYSTEM WHEN THE UNIT IS NOT IN
USE.
(3) Power off the imager during charging.
Temperature Bar
The Temperature Bar is a bar-graph style temperature gauge in the right portion
of the display. The bar/numeric indicator displayed represents the approximate
temperature of the object viewed within the Temperature Measurement Zone
in the center of the display. Accuracy of indication is dependent on numerous
factors including the distance from the object being viewed (accuracy decreases
as distance increases) and its emissivity (heat radiation properties). Your Bullard
QXT is factory-calibrated to emissivity corresponding with normal construction
materials. Objects with emissivity varying greatly from this (particularly reflective
objects such as metals and shiny materials) reduces accuracy of the temperature
indication.
Detail of Power Source Indicator
