DECLARATION OF CONFORMITY
We hereby certify that the OXFORD Precision Electronic Weighing Scales
comply with all the relevant provisions of the EC Directive 73/23/EEC
(The Low Voltage Directive of the Council of European Communities of 19th February 1973 )
& the EMC Directive 89/336/EEC (relating to Electromagnetic Compatibility) according to
EN 61000-6-3: 2001; EN 61000-6-1: 2001.
OXFORD
PRECISION
Leicester, England, LE18 2FS.
A D iv isi on of Th e K en ned y Gro up Lt d
Signed:
Date: 1st July 2013
Name: Keith Read
Position: Group HSQE Manager
Electronic Weighing Scales
OXFORD
PRECISION
OXD-844-2200K/OXD-844-2220K
INSTRUCTION MANUAL
• Battery or mains powered (batteries not provided)
• Suitable for office, postroom, stores applications
• Large clear digital display
• Dual reading — metric or imperial
• Capacities: WS-6E — 6kg/12lb 12oz, WS-15E — 15kg/30lb
Oxford Precision, Victoria Works, Leicester, England
OXFORD
PR EC IS IO N
PR EC IS IO N
Quality Guarantee & Warranty
Quality Guarantee
O
xford Precision products carry a one year manufacturers warranty.
Oxford Precision products are designed and manufactured to the highest standards and specifications.
Assuring the quality and performance required by all sectors of industry.
O
xford Precision products are fully guaranteed against faulty materials and workmanship.
Should they be found to be defective, they will either be repaired or replaced free of
c
harge (fair wear and tear and/or misuse excepted). Unauthorised opening of the caliper forfeits the warranty.
Please retain supplier invoice as proof of purchase.
AVAILABLE FROM YOUR DISTRIBUTOR
OXFORD PRECISIONLeicester, England, LE18 2FS.
Oxford is a registered trade mark of The Kennedy Group Ltd. Supplied by an ISO9001 approved company.
© The Kennedy Group Ltd. 07/13
Please read all operating instructions carefully before using and note the following points:
• Best results can be obtained when the scales are used at normal room temperature.
Exposure of the scales to extremes of temperature should be avoided.
• Before using or calibrating the scales, they should be allowed to stabilise. Switch on the
scales and leave for a few minutes before use.
• The reliability and accuracy of the scales may be affected by environmental conditions,
such as dust, dirt, moisture, vibration, air currents or proximity to other electrical
equipment. Also, make sure that the surface where the scales are to be used is stable
and vibration free.
• Handle with care! Although designed to be fairly durable, the user should avoid dropping
heavy objects on to the weighing plate. In some circumstances the internal sensor may
be damaged by inappropriate use.
• The item to be weighed should be placed carefully onto the scales and the display
allowed to stabilise. Remove the item immediately. Using the scales in this manner will
increase the longevity and maintain the accuracy of the scales.
• Using the scales in the vicinity of in-use cell phones, radios, computers or other
electronic devices which emit radio frequency energy. Exposure to such emissions may
cause the scales to malfunction and give unreliable readings.
• The scales’ adjustable feet can be used to raise the height of the scales (turn in an
anti-clockwise direction) or lower the height of the scales (turn in a clockwise direction).
The scales include an integral spirit level, which can be viewed on the front of the
scales, and which can be used as an aid to levelling the scales on the chosen surface.
• The scales can be powered using either the AC/mains adaptor or the 6-volt
rechargeable battery. When Lo.bAt is displayed, this indicates that the rechargeable
battery is low and that it should be recharged immediately.
For the complete range of
Oxford Precision tools,
please contact your
Oxford Precision distributor.
1. Capacity and Graduation
WS-6E: 6.000kg x0.001kg/12.000lb x0.002lb
WS-15E: 15.000kg x0.002kg/30.000lb x 0.005lb
2. Display
Seven red, .56”, seven segment LED digit display
Eight LED diodes: ZERO, NET, AC, CHG, LB, KG, G, OZ
Examples of display for 5.340kg in different weight units on OXD-844-2200K and 5.822kg
in different weight units on OXD-844-2220K.
Specification
Symbols
0
______
The power-on zero point exceeds the calibration zero point +20%FS when the
scale is turned on, or the weight exceeds power-on zero point +5%FS when the
ZERO button is pressed.
0______ The power-on zero point is below the calibration zero point -20%FS when the
scale is turned on, or the weight is power-on zero point -5%FS when pressing
ZERO button.
______ The current weight is less than -25%FS.
______ The current weight is over 102%FS.
CAL-0 Zero point at calibration.
CAL-F Full capacity at calibration.
CAL-Er Calibration error.
A.ch.Er Analog channel error.
EEP.Er EEPROM accessing error or data in EEPROM is erroneous or not within the
normal range.
Lo.bAt The voltage of internal working is below 5.7V(±0.1V).
x.x Udc The voltage of internal working is x.xV(±0.1V).
Fig. 6 Bottom view of scales
3. Working temperature: 5°C-35°C.
4. Power supply: 12Vdc, 650mA AC adaptor, with negative centre or 6V4AH rechargeable
battery.
Note:
• When the rechargeable battery is fully charged the scales can be used for 20 hours
continuously.
• When the power supply registers <5.4V(±0.1V), the scales will be turned off
automatically.
• When the power supply registers <5.7V(±0.1V) but over 5.4V(±0.1V), the scales will
alternatively display Lo.bAT and whatever the screen currently displays in its normal
mode.
• If the AC adaptor is used to charge the battery or to power the scales, the switch on
the underside of the scales must be switched to the on position.
5. Working current: <150mA.
6. Recharging current: <400mA.
1. ZERO/ON/OFF
(i) Press this button to activate the scales. The scales perform its self-examination mode,
display the working voltage x.x Udc, display the machine’s capacity (F6.000kg or
F15.000kg), before finally setting the zero point and displaying a zero reading.
Note: The power-on zero-point range is: calibration zero-point ±20% FS (full scale weight
capability).
(ii) To reset the scales to zero after any operation, press the ZERO key for less than five
seconds. Pressing the ZERO key for more than five seconds will activate the ON/OFF
function.
The ZERO key range is power-on zero-point ±5% FS. The ZERO function is used to clear
any TARE weight that may be displayed after previous weighing operations. When the
TARE weight is displayed the NET LED will be activated. After using the ZERO function
the ZERO LED will be shown. If the current weight exceeds ±5% then the ZERO
operation is disabled and the display will read 0
______
or 0______, before returning to
the previous reading.
2. TARE/UNIT
Pressing the TARE/UNIT key for less than five seconds activates the TARE function.
Pressing the TARE/UNIT key for more than five seconds activates the UNIT function.
The TARE range for these scales is up to 102%FS. The TARE function should be
activated when the scales are in normal mode, i.e. the display reads 0 and no items are
on the weighing tray.
When the TARE weight is not reading 0, the NET LED light will be activated.
Note: Gross weight = Net weight + Tare weight
£102%FS.
UNIT: The UNIT function is used to select the weight scale (lb, kg, g, oz, lb.oz).
Key Functions
Calibration
AUTO-OFF function
Warnings
Cleaning the scales
The calibration of this product requires specialist tools and should only be carried out by
persons with appropriate skills/qualifications. Should you experience any problems please
return the goods to your supplier, who will arrange professional calibration of the scales.
UNDER NO CIRCUMSTANCES SHOULD MAINTENANCE OR CALIBRATION BE ATTEMPTED
BY PERSONS WITHOUT APPROPRIATE SKILLS OR QUALIFICATIONS. SUCH ACTIONS MAY
RESULT IN IRREPAIRABLE DAMAGE AND WILL ALSO INVALIDATE ANY GUARANTEE OR
WARRANTY.
The scales incorporate an AUTO-OFF function. To activate this action the scales must be
switched on. To set the function, press the TARE and ZERO buttons for more than 5
seconds until the A.oFF.x message is displayed.
Setting the AUTO-OFF function time is achieved by pressing the TARE button the required
number of times, until the desired AUTO-OFF time is displayed (i.e. A.oFF.4 will cause the
scales to switch themselves off after four minutes).
The AUTO-OFF time is confirmed and saved by pressing the ZERO button.
If the scales are to be used in wet or damp conditions using a mains electrical connection
(110V/230V), the supply must be correctly fused and protected by an approved RCD which
conforms to BS7071 or BS7288 or IEC1008-2-2 BS EN 61008:1995. IF YOU ARE NOT
SURE ABOUT THIS WARNING YOU MUST SEEK THE ADVICE OF A QUALIFIED
ELECTRICIAN.
To avoid an electric shock, or permanent damage to the machine, you must isolate the
scales from the electricity supply before carrying out any routine maintenance.
To avoid damage to the display, top plate or body of the scales, it is not advised to use any
harsh abrasives, scouring cleaners and alkaline solutions, such as washing soda, when
cleaning the scales. Special care should be taken when cleaning the digital display screen,
which could be permanently damaged by the use of inappropriate cleaning agents. DO NOT
ATTEMPT TO CLEAN ANY INTERNAL COMPONENTS.
Best cleaning results are obtained by the use of a clean, lint-free cloth, which has been
slightly dampened using a weak water and washing-up liquid solution.
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