Comark KM814 Bruksanvisning

Comark Termometer KM814

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HOW TO MEASURE TEMPERATURE
ACCURATELY
LOCATING A HOT SPOT
To nd a hot spot aim the thermometer outside the area of interest,
then scan across with an up and down motion until you locate the
hot spot.
FIELD OF VIEW
Make sure that the target is larger than the unit’s spot size. The
smaller the target, the closer you should be to it. When accuracy is
critical, make sure the target is at least twice as large as the spot
size.
DISTANCE & SPOT SIZE
As the distance from the object increases, the spot size of the area
measured by the unit becomes larger.
REMINDERS
• Not recommended for use in measuring shiny or polished metal
surfaces (stainless steel, aluminium, etc.).
See Emissivity.
• The unit cannot measure through transparent surfaces such
as glass. It will measure the surface temperature of the glass
instead.
• Steam, dust, smoke, etc., can prevent accurate measurement
by obstructing the units optics.
CE CERTIFICATION
This instrument conforms to the following standards:
• EN50081-1:1992, Electromagnetic Emissions
• EN50082-1:1992, Electromagnetic Susceptibility
Tests were conducted using a frequency range of 27–500 MHz with
the instrument in three orientations. The average error for the three
orientations is ±4.8°C (±8.6°F) at 3 V/m throughout the spectrum.
However, between 190 MHz and 500 MHz at 3 V/m, the instrument
may not meet its stated accuracy.
WARRANTY
All Comark instruments have a minimum one year warranty unless
otherwise stated. The warranty period for temperature probes is for
six months and all other probes and electrodes are unwarranted
because the conditions of use are beyond our control.
The Comark warranty covers manufacturing defects and component
failure and applies worldwide. The warranty does not affect your
statutory rights. In line with our policy of continuous development
we reserve the right to alter any product specications
without notice.
Comark Instruments,
52 Hurricane Way,
Norwich, Norfolk
NR6 6JB
United Kingdom
Tel: +44 844 815 6599
Fax: +44 844 815 6598
Email: sales@comarkinstruments.com
EMISSIVITY
Most organic materials and painted or oxidized surfaces have an
emissivity of 0.95 (pre-set in the unit) NOTE: KM814FS pre-set
at 0.97. Inaccurate readings will result from measuring shiny or
polished metal surfaces. To compensate, cover the surface to be
measured with masking tape or matt black paint. Allow time for the
tape to reach the same temperature as the the material underneath
it. Measure the temperature of the tape or painted surface.
MAINTENANCE
Lens Cleaning: Blow off loose particles using clean compressed
air. Gently brush remaining debris away with a camel hair brush.
Carefully wipe the surface with a moist cotton swab. The swab
may be moistened with water.
NOTE: use solvents to clean the plastic lens.DO NOT
Case Cleaning: Use soap and water on a damp sponge or soft cloth.
NOTE: submerge the unit in waterDO NOT
TROUBLESHOOTING
CODE PROBLEM ACTION
– – – (on display) Target temperature
is over or under range
Select target
within
specications
Battery icon appears Possible low battery Check and/or
replace battery
Blank display Possible dead battery Check and/or
replace battery
Laser doesn’t work Low or dead battery Replace battery
HOW TO OPERATE THE UNIT
°C/°F AND BATTERY
Pull open the unit’s handle using the nger indents near the trigger
to access the C/F switch or to insert/remove the battery. To toggle
between °C and °F, push the switch (see g 1). Insert the 9v battery
positive side rst into the battery compartment. NOTE: The battery
door is detachable.
OPERATING THE UNIT
To measure a temperature, point unit at object and pull the trigger.
Be sure to consider distance-to-spot size ratio and eld of view. If the
unit is equipped with a laser, use the laser only for aiming. See How
to Accurately Measure Temperatures.
DISPLAY
The backlit LCD displays the current temperature in Celsius or
Fahrenheit. The unit will hold the reading for 7 seconds after trigger
is released; the word HOLD appears. The presence of the battery
icon indicates a low battery.
WARNING
(units with laser sighting)
DO NOT POINT LASER DIRECTLY AT EYE OR
INDIRECTLY OFF REFLECTIVE SURFACES.
CAUTIONS
ALL MODELS SHOULD BE PROTECTED FROM THE
FOLLOWING,
• EMF (electro-magnetic elds) from arc welders, induction
heaters
• Static electricity
• Thermal shock (caused by large or abrupt ambient
temperature changes—allow 30 minutes for unit to stabilize
before use)
• Do not leave the unit on or near objects of high temperature
INTRODUCTION
We are condent you will nd many uses for your handheld
noncontact thermometer. Compact, rugged, and easy to use—
just aim, pull the trigger, and read current surface temperatures
in less than a second.
You can safely measure surface temperatures of hot, hazardous,
or hard-to-reach objects without contact.
HOW IT WORKS
Infrared thermometers measure the surface temperature of an
object. The units optics sense emitted, reected, and transmitted
energy, which is collected and focused onto a detector. The units
electronics translate the information into a temperature reading
which is displayed on the unit. In units with a laser, the laser is used
for aiming purposes only.
SPECIFICATIONS
Temperature Range
KM812 and KM814
KM814FS
-18°C to +260°C (0°F to +500°F)
-30°C to +200°C (-25°F to +400°F)
Temperature display 0.5°C or 1.0°F
Accuracy
(assumes ambient
operating temperature
of 23°C [73°F])
KM812/KM814 for targets at:
-1°C to +260°C (+30°F to +500°F):
±2% of reading or ±2°C (±3.5°F),
whichever is greater
-18°C to -1°C (0°F to +30°F) ±3°C (±5°F)
KM814FS for targets at:
0°C to 65°C (+32°F to +150°F):±1°C (±2°F)
below 0°C (+32°F): ±1°C +0.1°C/°C (±2°F
+0.2°F/°F)
above +65°C (+150°F): 1.5% of reading
Response time 500 mSec, 95% response
Spectral response
KM812/KM814
KM814FS
7–18 μm
8–14 μm
Emissivity
KM812/KM814
KM814FS
pre-set 0.95
pre-set 0.97
Ambient operating range 0°C to +50°C (+32°F to +120°F)
Relative humidity 10–95% RH noncondensing,
@ up to +30°C (+86°F)
Storage temperature +20°C to +65°C (-4°F to +150°F)
without battery
Weight / dimensions 227 g (0.5 lb); 152 x 101 x 38 mm
(6 x 4 x 1.5 in)
Power 9V Alkaline battery
Typical battery life
(Alkaline)
Non-laser models: 22 hrs
Laser Models: 12 hrs
Distance to spot size
KM812/KM814
KM814FS
6:1
4:1
Specications subject to change without notice.
KM812, KM814 AND KM814FS
INFRATRACE COMPACT
NONCONTACT THERMOMETERS
5432
876
17241/8 (11/12)
www.comarkinstruments.com

Produktspecifikationer

Varumärke: Comark
Kategori: Termometer
Modell: KM814

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