Bullard T4 - Handbuch (Seite 5)

Lens
LCD Screen
Side Strap
Rear Boot
Lens Bezel
Figure 1
Bullard T4 Thermal Throttle
Power Button
Battery
Zoom Button
Congratulations
Congratulations on the purchase of your new advanced Bullard T4 Thermal Imager.
The new Bullard T4 combines advanced thermal imaging technology with our expertise
in high heat, impact resistant engineered polymers to bring you the most durable
thermal imager on the market. The T4's innovative, compact design and logical, easy-
to-use interface presents a truly personalized thermal imaging tool to today's
firefighters.
The benefits of using thermal imaging technology as a firefighting tool encompass
nearly every aspect of a firefighter's job.Thermal imaging is not, however, a technology
designed to replace current firefighting tactics. Rather, it is a tool that allows the
firefighter to be more effective and make better decisions. Some of the many uses for
your Bullard T4 Thermal Imager include:
• Search and rescue
• Scene assessment
• Locating the seat of the fire
• Determining the spread of the fire
• Locating hot spots
• Identifying potential flashover situations
• Determining ventilation points
• Determining entry and exit points
• Overhaul
• Hazmat
•Wildland firefighting
• Incident investigation
•Training
NOTE
To ensure that we are able to reach you with any product or software
updates, please fill out the warranty card enclosed with your Bullard T4
Thermal Imager.
Use and Operation
Power
To turn on your Bullard T4 Thermal Imager, depress and release the large, red power
button under the LCD display
(Figure 2). Upon pressing the power button the
thermal imager will display the Bullard logo and initiate a calibration sequence. The
thermal image will appear within four seconds. To turn off power, depress and hold the
power button for three seconds and release.
NOTE
You will periodically observe a momentary freeze in the image. This is
normal and is a function of the self calibration shutter. The shutter will
activate every 30 seconds to three minutes, depending on the
environment.
Relative Heat Indicator™ (RHI)
The T4 is equipped with temperature measurement capability. The right side of the
display will show a bar graph or Relative Heat Indicator (RHI). The RHI will indicate the
approximate temperature of the object viewed within the “crosshairs” shown in the
middle of the screen. The accuracy of the indicators is dependent on numerous factors
including the distance from the object being viewed and its emissivity, which is the
object's ability to radiate heat. Units are calibrated with a preset emissivity
corresponding with normal construction materials. Objects with emissivities that vary
greatly from this, such as metals and shiny objects, will reduce the accuracy of the
temperature indication. Additionally, temperature measurement accuracy decreases
as the distance from the object in the “crosshairs” increases.
NOTE
The RHI provides a quick reference to compare objects of similar
emissivities to serve as a guide to pinpoint intense heat sources. Due to
the inherent issues with accuracy, use this feature with caution and verify
indicated heat levels through traditional means whenever possible.
Super Red Hot™ Feature
The T4 features Super Red Hot high heat colorization. With the Super Red Hot feature,
heat levels are identified by various color hues. Starting at 250°C, heated objects are
tinted yellow and gradually transition to orange and then solid red as heat levels rise.
The Super Red Hot feature identifies specific heat layers alerting firefighters to areas
of intense heat. This feature provides an enhanced visual awareness of the hottest
objects in a scene.
Electronic Thermal Throttle™
The T4 incorporates a highly useful and unique feature, the Electronic Thermal Throttle.
The Thermal Throttle is ideal for pinpointing hot spots during overhaul, searching for
overheated electrical equipment, or clarifying objects in ambient temperature
situations. To activate the Thermal Throttle option, locate the two black buttons on the
top of the T4 (Figure 1). Press the down button (the button closer to the front of
the imager) to activate the Thermal Throttle. The Electronic Thermal Throttle will
automatically sense the hottest area in the scene and color it blue. Continuing to press
the down button (or holding it down) will further engage the Thermal Throttle and will
color more of the scene blue, eventually coloring even the coolest objects blue.
Read all instructions and warnings before using this product.
Your thermal imager is like any other tool. It must be used properly and safely. All
users should be trained on the proper and safe use of thermal imaging prior to
using the T4 Thermal Imager.This is especially important for users who may use
the T4 Thermal Imager in hazardous or IDLH (immediately dangerous to life and
health) environments.
Failure to follow this information could result in death or serious injury.
WARNING
This is a class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measure.
WARNING
Bullard T4 Thermal Imager
User Manual