az-instrument 8861 Manuel utilisateur
OPERATION MANUAL
Model: 8861
8866
INFRARED THERMOMETER
INTRODUCTION
8861 AND 8866 FEATURES
oo
Switchable F or Creadings
Quick and simple operation
Back-light
Long battery life
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Temperature range of 0 to 788 (-20
o
to 420 C)
On-board nine measurement
memory
Barrel sight targeting
Laser targeting (8866 only)
User programmable alarm
(8866 only)
PACKAGE CONTENTS
Protective carrying case
Either the 8861 or 8866
Operating instruction manual
One battery
SAFETY RULES
CAUTION
This equipment is intended for use by
industry profes - sionals who know their
professional environments.
Temperature measurements are often
taken in poten- tially hazardous areas.
Know and use the safety stan - dards
prescribed by your profession.
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8866 LASER SAFETY
Laser light can cause eye injury, if the
beam makes direct eye contact.
Reflected Laser light can also cause
damage, if a mirror or a glass-like
surface reflects the beam directly into
the eye.
Laser's potential to cause damage is
retained for hundreds of feet.
Use caution.
Do not point the laser toward the
eyes or face of a person or animal.
LASER SPLASH:
Indicates the use of laser equipment
and the category of laser used.
SYMBOLS
CONTROLS AND INDICATORS
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INF8861 AND INF8866
1. Fahrenheit / Centigrade select push-
button, and mode down/decrease
push-button.
2. Backlight push-button, and up /
increase selector.
3. Temperature display mode select,
memory recall and programming
select (INF8866) push-button.
4. Temperature display mode indicator.
5. Temperature measurement.
6. Fahrenheit / Centigrade scale
indicator.
7. Low battery annunciator.
8. Memory location annunciator.
INF8866 ONLY
9. Emissivity annunciator.
10. Laser targeting on/off push-button.
11. Laser on annunciator.
12. Alarm mode indicator.
INF8861AND INF8866
OPERATING INSTRUCTIONS
This instrument's light weight, pistol
grip design, raised push-buttons, and
large LCD display make it convenient
for most temperature measurement
needs and accessible to processes not
suited for conventional "contact"
temperature measurements.
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TAKING MEASUREMENT SAMPLES
To take temperature measurements,
point the instrument at the surface to
be measured and pull the trigger.
A tube has been incorporated along the
top of the barrel to aid the user in
spotting the surface area to be
measured (target).
Although this simple explanation works
well in most cases, there are other
factors that may impact the
measurement accuracy.
Consider these influences before using
the data you obtain with your infrared
thermometer:
The target must completely fill the
spot diameter seen by the infrared
sensor, otherwise the temperature
displayed will be influenced by the
surface surrounding the target.
The ratio of the distance from the
end of the barrel to the size of the
spot being measured is 8:
1. For example, using the INF 8866,
an object that is 6" in diameter can
be accurately measured from 4'
away. When using the gun to find hot
-spots, accuracy of the reading is not
as important as keeping the gun at
the same distance from the target for
each sample measurement.
If you are looking for hot-spots on
electrical panels, for instance, you
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Each time the trigger is pulled your INF
8861 and INF8866 monitors four
different readings, regardless of the
selected mode. They are:
Emissivity of an object will also
affect accuracy. See the " Validation
" section for details
This instrument is sensitive to
electromagnetic interference (EMI),
such as that generated by spark
plug wires, radio transmitters and
welders. Do not use this instrument
in close proximity to equipment that
may produce such interference
The instrument must be used within
the ambient temperature range
specified in the specification table
The highest temperature measured
The lowest temperature measured
The average temperature (time
weighted)
The Net difference between the high
and low temperatures "DT"
could take the readings from 6' away
each time, even though you may
only be filling half the spot diameter.
The critical information in this
process would be any significantly
higher temperature Operating
Instructions (cont.)
5
These four measurements go into the
first memory location for future recall,
when the trigger is released. See "
Recalling memory points " for more
details.
While the trigger is pulled, a tempera-
ture sample is taken at a minimum of
once every 1/2 second (500 milli-
seconds).
The four parameters mentioned above
are updated at the same rate.
SELECTING FAHRENHEIT OR
CENTIGRADE SCALES
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Select the scale you prefer to use ( F
ooo
or C) by pressing the ( " C/ F " )
push-button while the trigger is pulled.
Operating Instructions (cont.)
BACKLIGHT OPERATION
To toggle the backlight on or off, press
the push-button with the backlight
( ) symbol while the trigger is pulled.
Once the backlight has been turned on,
it will come on each time the trigger is
pulled until it is toggled off.
Please note that this feature
significantly reduces the battery's life.
MEASUREMENT MODES
This instrument allows you to select
from one of five display modes. You can
cycle through the modes in this order:
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Real-time temperature
measurements
Maximum temperature measured
(MAX mode)
Minimum temperature measured
(MIN mode)
Temperature difference between
MAX and MIN ( mode)
Calculated (time weighted) average
temperature (AVG mode)
The last mode selected will remain
selected the next time you pull the
trigger.
REAL-TIME TEMPERATURE
MEASUREMENT MODE
This display mode shows the actual
temperature of surfaces measured.
This value is updated at least once
every 1/2 second. When the instrument
is powered up for the first time, this
mode is pre-set. operating instructions
(cont.)
MAXIMUM TEMPERATURE (MAX)
MODE
To enter the "MAX" display mode, pull
the trigger, and press and release the
MODE push-button repeatedly until you
see the word "MAX" displayed on the
LCD. In the "MAX" mode the highest
temperature measurement taken,
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during the current trigger pull, is
displayed on the LCD. The temperature
reading will update each time a higher
temperature is measured.
MINIMUM TEMPERATURE (MIN)
MODE
To enter the "MIN" display mode, pull
the trigger, and press and release the
MODE push-button repeatedly until you
see the word "MIN" displayed onthe
LCD.
In the "MIN" mode, the lowest tempera-
ture measurement taken, during the
current trigger pull, is displayed onthe
LCD. The temperature reading will
update each time a new lowesttempera
-ture is measured.
AVERAGE (AVG) MODE
To select the " AVG " display mode, pull
the trigger and press and release the
MODE push-button repeatedly until
" AVG " is displayed on the LCD.
The term "time weighted" in reference
to the averaging mode means all
temperature measurements taken,
from the time the trigger was first pulled
, are averaged together.Actual surface
temperature is not displayed while
taking measurements in this mode.
If you were to walk along a wall for one
minute taking readings that were
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generally 72 degrees, then walk by a
spot for 1/2 second that was 20
degrees, no significant change in
average temperature would be
displayed. Operating instructions (cont.)
TEMPERATURE DIFFERENTIAL
( T) MODE
To select the temperature differential
display mode ( T), pull the trigger and
press and release the mode push-
button repeatedly until " T" is display-
ed on the LCD. This display mode is
used to determine the net temperature
difference between two surfaces.
This is particularly valuable when
calculating net heating or cooling, since
ambient temperature is effectively
removed from the equation.
Operating Instructions (Cont.)
RECALLING MEMORY POINTS
With each pull of the trigger, four values
are recorded in memory:
The highest temperature measured
The lowest temperature measured
The time weighted average tempera-
ture
The value last displayed before
releasing the trigger
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Ce manuel convient aux modèles suivants
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Table des matières
Autres manuels az-instrument Thermomètre
