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2.2
Distance & spot size
As the distance (D) from the object increases, the diameter (S) of the area measured by the unit becomes larger.
D
2.3
Emissivity
2.3.1
Emissivity is a term used for the ability of a surface to radiate energy. Most (90% of typical applications) organic materials and
painted or oxidised surfaces have an emissivity of 0.95 (pre-set in the thermometer).
2.3.2
Inaccurate readings will result from measuring shiny or polished surfaces. To compensate, cover the surface to be measured
with masking tape or flat black paint.
2.3.3
Allow time for the tape to reach the same temperature as the material underneath it. Measure the temperature of the tape or
painted surface.
3.
OPERATION
3.1
To measure the surface temperature of an object/region, simply point the device at the object/region in question and press the
trigger.
NOTE! When the trigger is released the reading will be held for 15 seconds (HOLD will be displayed) and then the thermometer will
automatically shut down unless the trigger is pressed again.
3.2
ºC/ºF MODE.
3.2.1
To change the display from ºC to ºF (or visa versa), firstly turn the unit on by pressing the trigger. Now press the mode
button and the ºC or ºF symbol will be displayed, press again to cycle display between ºC or ºF.
Trigger released, laser reading held for fifteen seconds
Battery state.
or until trigger pressed again.
°C or °F display.
Current temperature reading.
Displays highest reading for each session.
S
4.
LCD ERROR MESSAGES
4.1
"Hi" or "Lo" will be displayed when the temperature being measured is outside the
range of the instrument. (See Specification, section 2.)
4.2
"Er2" is displayed when the unit is exposed to rapid changes in ambient
temperature.
"Er3" is displayed when the ambient temperature of the unit is below 0ºC (32°F)
or exceeds 50ºC (122°F). In both cases allow a minimum of 30mins for the unit to
stabilise and adapt to the working temperature.
4.3
For all other errors, a generic error message "Er" is displayed. In the event of this
occurring, it will be necessary to reset the unit. To reset the unit, turn the
instrument off, remove the battery and wait at least one minute. Now reinsert the
battery and turn the unit on. Should the error message remain, contact your
authorised Sealey dealer for assistance.
5.
BATTERIES
5.1
The VS904 incorporates a visual guide to the battery status:
"Battery OK"
Measurements are possible.
5.2
When the "Battery Low" symbol appears, the batteries should be replaced immediately with two batteries which are
located under the cover on the front of the handle grip.
NOTE: It is important that the unit is off before the batteries are replaced. A malfunction could occur if this precaution
is not taken. Be sure to dispose of the batteries safely and in accordance with local laws regarding potentially hazardous
waste.
6.
STORAGE AND CLEANING
6.1
The sensor lens should be kept clean at all times. Care should be taken when cleaning the lens - it is an extremely
delicate piece of equipment. Use a cotton swab moistened with a little water or medical alcohol, allowing the lens to dry
fully before attempting to use the unit.
DO NOT submerge any part of the VS904.
6.2
The VS904 should be stored between -20ºC and +65ºC.
Environmental Protection.
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be sorted,
taken to a recycle centre and disposed of in a manner which is compatible with the environment.
When the product is no longer required, it must be disposed of in an environmentally protective way. Be sure to dispose of
the batteries safely and in accordance with local laws regarding potentially hazardous waste.
Declaration of Conformity
INFRARED LASER DIGITAL
THERMOMETER 8:1
is in conformity with the following standards and directives.
Model: VS904
The construction file for this product is held by the Manufacturer and may be inspected, by a national
authority, upon request, to Jack Sealey Ltd.
EN 60825-1 Laser safety
93/68/EEC CE Marking Directive
2002/96/EC WEEE Directive
89/336/EEC EMC Directive
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component
parts without prior notice.IMPORTANT: No liability is accepted for incorrect use of this product. WARRANTY: Guarantee is 12 months
from purchase date, proof of which will be required for any claim. INFORMATION: Call 01284 757525 for our catalogue & promotions. Leave
your full name, address & postcode.
Sole UK Distributor
Sealey Group,
Bury St. Edmunds, Suffolk.
"Battery Low"
"Battery Exhausted"
Battery needs replacing.
Measurements are not possible.
Measurements are possible.
Replace battery.
We, the sole importer into the UK, declare that the product listed here
Signed by Tim Thompson
26th June 2007
For Jack Sealey Ltd. Sole importer into the UK of Sealey Professional Tools.
01284 757500
Web
01284 703534
sales@sealey.co.uk
email
www.sealey.co.uk
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