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Melrose, MA 02176
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YJ Carat and Gold Scales
Instruction Manual
EN-2 YJ Series
YJ Scale
Mark Standard
This product conforms to the EMC Directive 2004/108/EC, the Low Voltage Directive
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
2006/95/EC and the Non-Automatic Weighing Directive 2009/23/EC. The complete
Declaration of Conformity is available from Ohaus Corporation.
AS/NZS4251.1 Emission; AS/NZS4252.1 Immunity
Disposal
In conformance with the European Directive 2002/96/EC on Waste Electrical and Electronic
Equipment (WEEE) this device may not be disposed of in domestic waste. This also applies
to countries outside the EU, per their specific requirements.
Please dispose of this product in accordance with local regulations at the collecting point
specified for electrical and electronic equipment.
If you have any questions, please contact the responsible authority or the distributor from
which you purchased this device.
Should this device be passed on to other parties (for private or professional use), the content
of this regulation must also be related.
Thank you for your contribution to environmental protection.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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YJ Series EN-3
1. INTRODUCTION
This manual contains installation, operation and maintenance instructions for the YJ
Series. Please read the manual completely before using the scale.
1.1 Safety Precautions
Please follow these safety precautions:
• Use the scale only in dry locations.
• Do not operate the scale in hostile environments.
• Do not drop loads on the pan.
• Do not place the scale upside down on the pan.
• Service should be performed only by authorized personnel.
• If using the optional power adapter, verify that the power adapter input voltage
matches the local power supply voltage.
1.2. Controls
TABLE 1-1. CONTROL FUNCTIONS.
Key Name Function
On/Off
Light
Units
Tare
• Primary function – If scale is Off, turn On. If scale is On,
turn Off
• Primary function – Enters scale menu
• Menu Function – Advances to next menu item
• Primary function – Advances to next available unit
• Menu Function – This key is used to reject the displayed
setting and advance to next available setting
• Primary function – Perform Tare/Zero function
• Menu function – This key is used to accept the currently
displayed setting
2. INSTALLATION
2.1 Package Contents
• Scale
• Pan
• Instruction Manual
• 4 alkaline AAA batteries
•
Calibration weight (only for specific models. See Table 6-1)
EN-4 YJ Series
• Gem Scoop (only for specific models. See Table 6-1)
2.2. Location
Use the scale on a firm, steady surface. Avoid locations with excessive air current,
vibrations, heat sources, or rapid temperature changes. Adjust the leveling feet so the
bubble is centered in the circle.
Level Bubble
2.3 Battery Installation
The scale is powered by four alkaline AAA (LR6) type batteries. Remove the battery
cover and install the batteries.
2.4 Connecting Power
If using the optional power adapter, connect the power adapter to the power outlet (see
Figure 2-1) and the input jack to the back of the scale (see Figure 2-2)
For use with CSA Certified (or
equivalent approved) power
source, which must have a
limited circuit output.
Figures 2-1 Figure 2-2
2.5 Initial Calibration
Have the appropriate calibration masses available before beginning calibration (See
Table 6-1). Power on the scale by pressing On. Press Light button and SCALE is
displayed. Press Tare and span mass* is displayed. Press Tare the span mass value
flashes. Put the indicated calibration mass on the pan. When calibration is complete,
scale returns to weigh mode.
*Alternate span mass can be selected by pressing Units
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YJ Series EN-5
3. OPERATION
3.1 Weighing Units
Press Units to advance to next available weighing Unit.
Press Tare to zero the scale and then place objects to be weighed on the pan.
4. SETTINGS
The Settings allows the user to customize the scale.
4.1 Menu Structure
Table 4-1 illustrates the menu structure.
Calibration Menu
SCALE
LinE
Note: Default settings are shown in bold.
Backlight Menu
-FI-
-F2-
-F3-
TABLE 4-1 MENU
4.2 Menu Navigation
Enter Menu: Press and release Light. The SCALE menu will be displayed. Each
menu is entered by pressing Tare. Advance to the next main menu
by pressing Light.
Changing Settings: Press Units to reject the displayed setting and advance to next
available setting. Press Tare to accept the currently displayed
setting
Menu Exit: Press Off to quickly exit menu
Auto Off Menu
off
60 S
120 S
180 S
240 S
300 S
360 S
420 S
480 S
540 S
EN-6 YJ Series
4.3 Balance Menus
Span Calibration [SCALE]: Uses two weight values: Zero and at or near the full
capacity of the scale. Span calibration should be
performed if the scale is repositioned or when the room
temperature changes.
Linearity Calibration [line]: Uses three weight values: Zero, 50% of capacity and
full capacity. Generally this calibration is not required
unless testing shows that the linearity error exceeds the
linearity tolerance in the specification table. Accuracy of
weights is important to maintain weighing integrity.
Backlight [-F1-]: -F1- Backlight on when displayed value is > ±10d
-F2- Backlight always on
-F3- Backlight always off
Auto-Off [oFF]: Will automatically turn the scale off if no activity is
detected. Set between 60-540 seconds.
5. MAINTENANCE
5.1 Troubleshooting
The following table lists common problems and possible causes and remedies. If the
problem persists, contact Ohaus or your authorized dealer.
TABLE 5-1. TROUBLESHOOTING.
Symptom Possible Cause Remedy
Cannot turn on • No power to scale
• Empty or incorrectly installed batteries
Poor accuracy • Improper calibration
• Unstable environment
• Debris touching the pan
• Draftshield is touching the pan or
sample
Cannot calibrate • Unstable environment
• Incorrect calibration mass
Err 0 • Under-load condition • Verify pan is installed
Err 1 • Over-load condition • Verify excess load is removed from pan
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• Verify AC adapter connections and voltage
• Replace batteries, check polarity
• Perform calibration
• Move scale to suitable location
• Clean any debris next to or under the pan
• Check that pan is fully seated, check sample height
• Move the scale to a suitable location
• Use correct calibration masses
YJ Series EN-7
5.2 Service Information
If the troubleshooting section does not resolve or describe your problem, contact your
authorized Ohaus service agent.
5.3 Accessories
Description Ohaus Item No.
100V US Plug (Japan) 80251914
120V US Plug 80251906
220V EU Plug 80251915
230V AU Plug 80251916
240V UK Plug 80251917
6. TECHNICAL DATA
6.1 Specifications
TABLE 6-1.SPECIFICATIONS.
Model No. YJ103* YJ152* YJ102 YJ301 YJ501
100ct 150ct
Capacity
Readability
Linearity +/- 1 d
Repeatability +/- 1 d
Operating Temperature Range 10° to 30° C
Weighing Units Gram, Carat, Grain, Ounce, Ounce Troy, Pennyweight
Tare Range To capacity by subtraction
Stabilization Time (seconds) 3
Recommended Span Point 20g 30g 100g 300g 500g
Display (mm) Backlit LCD (13)
Battery Life 8 hours min
* Cal weight and gem scoop included in package
20g 30g
0.005ct 0.01ct
0.001g 0.002g
100g 300g 500g
0.01g 0.1g 0.1g
EN-2 YJ Series
LIMITED WARRANTY
Ohaus products are warranted against defects in materials and workmanship from the
date of delivery through the duration of the warranty period. During the warranty period
Ohaus will repair, or, at its option, replace any component(s) that proves to be defective
at no charge, provided that the product is returned, freight prepaid, to Ohaus. This
warranty does not apply if the product has been damaged by accident or misuse,
exposed to radioactive or corrosive materials, has foreign material penetrating to the
inside of the product, or as a result of service or modification by other than Ohaus. In
lieu of a properly returned warranty registration card, the warranty period shall begin on
the date of shipment to the authorized dealer. No other express or implied warranty is
given by Ohaus Corporation. Ohaus Corporation shall not be liable for any
consequential damages.
As warranty legislation differs from state to state and country to country,
please contact Ohaus or your local Ohaus dealer for further details.
*80251900* PN 80251900 B
© Ohaus Corporation 2011, all rights reserved Printed in China
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