OHAUS RA Series User manual

RA Series Price Computing Scale

RA Series EN-1
1. INTRODUCTION.....................................................................................................2
2. INSTALLATION ......................................................................................................2
2.1 Unpacking................................................................................................2
2.2 Assembling ..............................................................................................2
2.3 Selecting the Location................................................................................3
2.4 Leveling the Scale .....................................................................................3
2.5 Connecting Power.....................................................................................3
3. OVERVIEW OF CONTROLS AND FUNCTIONS..............................................................4
3.1 Control Panel............................................................................................4
3.2 Customer Display......................................................................................4
3.3 Keys and Display Indicators .......................................................................5
4. OPERATIONS........................................................................................................6
4.1 Turning the Unit On and Off.........................................................................6
4.2 Zero Operation..........................................................................................6
4.3 Manual Tare.............................................................................................6
4.4 Keyboard Tare ..........................................................................................6
4.5 Clearing Tare............................................................................................6
4.6 Weighing and Pricing................................................................................6
4.7 PLU Function (Price Lookup)......................................................................7
4.8 By-Count Function.....................................................................................7
4.9 Accumulation Function...............................................................................8
4.10 Backlight Feature.......................................................................................8
4.11 Battery Power Saving Feature......................................................................8
5. SCALE SETTINGS...................................................................................................9
5.1 Accessing the User Setup Mode...................................................................9
5.2 User Setup Parameters...............................................................................9
6. CALIBRATION AND SEALING .................................................................................10
6.1 Calibration..............................................................................................10
6.2 Type Approval Sealing .............................................................................12
7. MAINTENANCE....................................................................................................12
7.1 Cleaning ................................................................................................12
7.2 Troubleshooting......................................................................................13
8. TECHNICAL DATA................................................................................................14
8.1 Specifications .........................................................................................14
8.2 Drawings ...............................................................................................15
8.3 Compliance............................................................................................15
LIMITED WARRANTY...................................................................................................17

EN-2 RA Series
1. INTRODUCTION
This manual contains installation, operation and maintenance instructions for the RA
Series scale. Please read the manual completely before installation and operation.
Safety Precautions
For safe and dependable operation of this scale, please comply with the
following safety precautions:
•Verify that the input voltage printed on the AC Adapter and the plug type
matches the local AC power supply.
•Make sure that the power cord does not pose an obstacle or tripping
hazard.
•Disconnect the scale from the power supply when cleaning the scale.
•Do not operate the scale in hazardous or unstable environments.
•Do not drop loads on the platform.
•Use only approved accessories and peripherals, as available.
•Operate the scale only under ambient conditions specified in these
instructions.
•Service should be performed by authorized personnel only.
2. INSTALLATION
2.1 Unpacking
Unpack and verify that the following components have been included:
•Scale Unit
•Weighing Pan
•Power Adapter
•Instruction Manual
Save the packaging material. This packaging ensures the ideal protection for
the storage or transport of the product.
2.2 Assembling
Install the weighing pan as illustrated below, with the rounder corners facing
front.

RA Series EN-3
2.3 Selecting the Location
Operate the scale on a firm, level surface. Avoid locations with rapid
temperature changes, excessive air currents, vibrations, electromagnetic
fields, heat or direct sunlight.
2.4 Leveling the Scale
Adjust the leveling feet until the bubble is centered in the circle of the level
indicator (located on the rear). Ensure that the scale is level each time its
location is changed.
2.5 Connecting Power
2.5.1 AC Power
Verify that the intended AC power source matches the AC adapter rating.
Connect the adapter to the power receptacle underneath and to the rear of the
scale, then plug the AC adapter into a properly grounded power outlet.
2.5.2 Battery Power
This scale can operate with six D-size standard alkaline batteries (not
included). To install, unplug the scale first from the power supply. Open the
battery cover (located at the bottom of the scale) by twisting the two tabs 90˚
before pulling out to disengage the cover. Install the batteries as illustrated
on the battery holder. Re-attach the cover by inserting the tabs back into
position, then twist to lock in place.
If AC power is disconnected, the scale will automatically switch to battery
power.
Dispose of the batteries according to local laws and regulations.

EN-4 RA Series
3. OVERVIEW OF CONTROLS AND FUNCTIONS
3.1 Control Panel
3.2 Customer Display
1 Weight display
2 Unit Price display
3 Total Price display
4 Weights & Measures marking
5 On/Off Key
6 Numeric Keypad
7 Annunciators
54
3
21
21 3
6
4
7
7

RA Series EN-5
3.3 Keys and Display Indicators
•Short press turns the scale on or off
•With the scale off, press together with [>0<] to enter User Setup Mode
to •Numeric keys to enter Unit Price, Keyboard Tare, PLU number and other data
•Clears the Unit Price or Accumulation data
•In SETUP Mode, ends the setup mode
•Zeros the display
•With the scale off, press together with to enter User Setup Mode
•In SETUP Mode, toggles back to the previous step
•Inputs the weight of the object on the weighing pan as a Tare value
•In SETUP Mode, toggles through the available settings
•Adds displayed Total Price into accumulation memory
•In SETUP Mode, accepts the displayed setting and proceeds to the next step
•Activates the By-Count operation and calculates the price of the item
•Stores or recalls a PLU
>0< •LCD annunciator indicates scale is at Center of Zero
•LCD annunciator indicates scale is on battery power
•LCD annunciator blinks to indicate the battery needs to be changed
•LCD annunciator indicates scale is on AC power or battery is full
NET •LCD annunciator indicates Net (Gross minus Tare) value
X •LCD annunciator indicates scale is in By-Count mode
ADD •LCD annunciator indicates scale is in Accumulation mode; data exists in
Accumulation memory
TOTAL •LCD annunciator indicates displayed Total Price is added into Accumulation
memory

EN-6 RA Series
4. OPERATIONS
4.1 Turning the Unit On and Off
Press to turn the scale on or off. If a weight on the pan exceeds the
power-on zero range (±10% of the scale capacity), “------” is displayed.
Remove the excess weight for the scale to capture zero. Ideally allow 15~30
minutes for the scale to warm up before use.
4.2 Zero Operation
Press [>0<] to zero the displayed weight (the weight must be stable and
within ±2% of the scale capacity). Center of Zero is indicated by the >0<
annunciator.
4.3 Manual Tare
Place a container on the pan, then press [>T<]. The Weight display will
show a net value of “0.0 0 ”, and the NET annunciator will turn on. Remove
the container, and the negative value displayed will be equivalent to the Tare
weight.
4.4 Keyboard Tare
With the pan empty, enter the known Tare value (up to the scale capacity,
and in increments of the scale readability) via the numeric keypad, then press
[>T<]. The Weight display will show the Tare as a negative net value, and
the NET annunciator will turn on as the Tare weight is registered.
4.5 Clearing Tare
Press [>T<] with the pan empty to clear any Tare value.
4.6 Weighing and Pricing
Place the item to be weighed on the pan, then enter the Unit Price via the
numeric keypad. The item weight will be shown in the Weight display, the
unit price in the Unit Price display, and the resulting total price in the Total
Price display.
The Unit Price and Total Price values are cleared automatically when the item
is removed from the pan.

RA Series EN-7
4.7 PLU Function (Price Lookup)
The PLU function can be used for frequently sold goods. The price is looked
up by simply entering the PLU number via the numeric keypad. The PLU
function can store up to 25 PLU’s.
4.7.1 Storing a PLU
1. Enter the Unit Price
2. Press and hold [PLU] until 2 beeps are heard (the Weight display shows
“PLu ”)
3. Enter the PLU number (1-25). The scale beeps twice again, indicating
that the PLU data was stored.
4.7.2 Recalling a PLU
Press [PLU], then the PLU number with pre-stored data. The scale will beep
once as the corresponding Unit Price is shown in the Unit Price display. If
entering a PLU number with no stored data, “noPLu ” will show momentarily
in the Weight display.
4.8 By-Count Function
The By-Count function is used as reference to calculate the price of non-
weighing items, e.g., the price for 36 pieces when 3 pieces cost a total of
$1.50.
1. Enter the deal quantity (1-99), e.g., “3 ” (displayed as “0.03 ” in the Unit
Price display), then press [X]. The Xannunciator will also be on to
indicate the scale is in the By-Count mode.
2. Enter the deal price, e.g., “1.50 ”, then press [+]. The Total Price display
will show “1.50 ”.
3. Enter the quantity to be sold, e.g., “36 ”. The resulting total price of
“18.00 ” is shown in the Total Price display. Keep entering another
quantity as needed.
4. To end the By-Count function and return to normal weighing mode, press
[C].

EN-8 RA Series
4.9 Accumulation Function
The Accumulation (totalize) function is used to add the total price of several
weighings.
4.9.1 Accumulating
1. Perform a pricing transaction as described in Section 4.6.
2. Press [+]. The displayed total price is added to the accumulation
memory, and the ADD and TOTAL annunciators will be on.
3. The Weight display will show “Total ”, the Unit Price display will show “1”
(the number of weighments), and the Total Price display will show the
accumulated total price value.
4. Remove the item, then repeat steps 1 and 2 until all desired transactions
are finished. The corresponding total number of weighments and
accumulated price will be displayed.
4.9.2 Recalling and Clearing Accumulation
With the pan empty, press [+]. The accumulated total number of
weighments and total price will be displayed. To clear accumulation
memory, press [C] at this time. The scale returns to normal weighing mode
and the ADD annunciator will turn off.
4.10 Backlight Feature
With the scale on, long-press [C] until the backlight turns on (repeat this step
to turn off, or when the scale is turned off and on again). When on, the
backlight temporarily switches off after 2 minutes of inactivity, and reactivates
with a key pressed or item placed on the pan.
4.11 Battery Power Saving Feature
When powered on batteries (not included), the scale will enter sleep mode
(Weight display will only show one “0 ” digit, and Unit Price and Total Price
displays will be blank) after 2 minutes of inactivity. It reactivates when a key
is pressed or an item placed on the pan.
If the scale still remains inactive after 15 minutes, the scale will turn off
automatically (see Section 5.2 to disable this function).

RA Series EN-9
5. SCALE SETTINGS
5.1 Accessing the User Setup Mode
With the scale off, press and [C] together momentarily. The scale turns
on and “grP 1” is displayed.
To navigate in the User Setup Mode:
•Press [+] to accept the displayed setting and proceed to the next step
•Press [>T<] to toggle through available settings
•Press [>0<] to return to the previous steps
•Press [C] to end setup and proceed to “Save”
5.2 User Setup Parameters
Window Display
Weight Unit Price Description Available Settings
grP 1 StEP 3 Key-press beeper ON : enables this function
OFF : disables this function
Step 4
Automatic Power-
off ON : enables this function
OFF : disables this function
Step 6
Automatic clearing
of tare and unit
price
ON : Auto-clear when weight is removed from the
platform
OFF : Manual clear by pressing [C]
grP 2 Step 7 Data output 0, 1, 2, 3, 4
(not applicable, no RS232 functionality; do not
change)
Step 8
Content of output 0, 1, 2(not applicable, no RS232 functionality; do
not change)
Step 9
Content of entry ON, OFF
(not applicable, do not change)
Step 10
Data output format ON, OFF (not applicable, no RS232 functionality; do
not change)
grP 3 Step 1 Filtering level 0 : Light; faster display speed
1: Normal
2 : High
Save Save or Abort Save : Saves changes and restarts to weighing
mode
Abort : Restarts to weighing mode without saving
changes
Note: Bold settings are defaults.

EN-10 RA Series
6. CALIBRATION AND SEALING
6.1 Calibration
For best results, calibrate the scale at regular intervals. Temperature
changes, geographic gravity variations, altitude changes and abuse are few
reasons why a scale may need recalibration.
Note: The following procedure requires the use of hand tools and calibration
weights. If unable to perform the calibration, contact an authorized Ohaus
service organization.
1. With the scale on, gently press the switch inside the access hole at the
bottom of the scale (1). A narrow screwdriver may be inserted through
the hole to press the switch.
Note: When accessing the bottom of the scale, avoid placing the
scale upside down on the pan or sub-platform. Place the scale on its
side.
2. “
grP 1 ” is displayed in the Weight display. Press [>T<] successively to
move through the succeeding parameters: “grP 2 ”.
Note: Press [>0<] at any time to return to the previous parameter.
3. When “
grP 3 ” is displayed, press [+] to select.
4. “
StEP 1 ” is displayed in the Unit Price display. Press [+] successively
to move through the succeeding parameters: “StEP 2 ”, “StEP 3 ”.
5. When “
StEP 4 ” and “ no ” are displayed, press [>T<] to change the
setting in the Total Weight display to “
YES ”.
6. When “
YES ” is displayed, press [+] to enter the Span Calibration
sequence.

RA Series EN-11
Note: Do not change the settings of any parameters unless specified
above. Other parameters are service settings intended for authorized
servicing use only. The scale may be turned off at any time to abort setup
without saving any changes.
7. Span Calibration Sequence:
Window Display
Weight Unit Price Total Price Description Actions
CAL StEP 1 15.00 Scale capacity Press [+] to select and proceed to next step.
Make sure the displayed value matches the
scale model capacity.
Do not press [>T<], which will toggle
through other capacity settings that may not
match the scale model’s.
Step 2 ------
Establish zero Press [+] to initiate countdown sequence.
Ensure the pan is empty and the scale
stable.
5 ... 0 Countdown The countdown will repeat if the scale is not
stable during this process.
Step 3 kkkkkk
2/3 calibration
point Place 2/3 capacity weight on the pan, then
press [+] to proceed to the next step.
Step 4 0 Full span Enter the scale capacity value from Step 1
(e.g., “
15 ”).
15 Establish full
span Place the indicated weight on the pan,
then press [+] to initiate countdown
sequence.
5 ... 0 Countdown The countdown will repeat if the scale is not
stable during this process.
Save Save or Abort Remove the weight from the pan, then
press [+] to save settings and restart scale
to weighing mode.
If needing to abort calibration and retain
previous calibration data, press [>T<]
(“Abort” will be displayed) then [+] at this
time (or turn the scale off at any time during
the process).

EN-12 RA Series
6.2 Type Approval Sealing
After the scale has been found to comply with local regulations by respective
approving authorities, the scale may be sealed in the following manner:
6.2.1 Lead and Wire Seal
(1) Install the 2 through-hole sealing screws securely as illustrated below.
Run thw wire seal into the through-holes, then apply the lead seal in place.
6.2.2. Sticker Seal
Install 2 regular pan-head screws, then apply a sticker over one of the screws
or on one of the through-holes for the housing screw (2).
7. MAINTENANCE
7.1 Cleaning
Comply with safety precautions when cleaning and maintaining the scale
•Turn off and disconnect the scale from the power supply during cleaning.
•Wipe the exterior components of the scale using a soft cloth dampened
with water and a mild detergent (DO NOT use acids, alkalis, strong
solvents or abrasive cleaning agents).
•Inspect the scale regularly. Ensure that the housing, pan and sub-
platform are clean and free from foreign material.
•DO NOT allow liquids to enter the scale.
•DO NOT open the scale; no user repairable components inside. Service
should be performed by authorized personnel only.
•DO NOT carry the scale by the pan or sub-platform. Use the handhold
behind the scale housing.
•DO NOT place the scale upside down. If accessing the bottom, place the
scale on its side.
2

RA Series EN-13
7.2 Troubleshooting
The following table lists common problems, possible causes and remedies.
If the problem persists, contact Ohaus or your authorized Ohaus dealer.
Symptom Possible Causes Remedy
Scale will not turn on. AC power not connected to
scale or to outlet.
No power in outlet.
Battery discharged.
Connect scale to power.
Connect to different power outlet.
Replace battery.
Weight reading does
not stabilize.
Unstable environment.
Interference under pan or
sub-platform.
Ensure a stable environment.
Ensure that the weighing pan and
sub-platform are unobstructed.
Scale does not display
accurately.
Improper calibration. Calibrate the scale using proper
calibration weights.
------ Weight
display
Weight exceeds power-on
zero range
Remove excess weight from the
pan during power-on.
^^^^^^ Weight
display
Overload condition Reduce the load on the pan.
^^^^^^ Total Price
display
Price > 9999.99 Reduce the load on the pan.
uuuuuu Weight
display
Underload condition Install the pan.
Re-zero the scale.
”E 11“ displayed RAM error Turn the scale off and on again.
Return scale for service.
”E 16“ displayed ROM error Recalibrate the scale.
Return scale for service.
”E 18“ displayed EEPROM error Return scale for service.
”E 31“ displayed By-Count operation error Enter only up to 2 digits (99)
”E 33“ displayed Accumulation total price >
999.99 or the number of
transactions > 99
Clear accumulation memory and
start anew
”E 34“ displayed PLU number > 25 Enter correct PLU number: 1-25
“noPLu“ displayed PLU data not found Store data in the PLU number

EN-14 RA Series
8. TECHNICAL DATA
8.1 Specifications
Model RA6US RA15US
Capacity x Readability 15 lb x 0.005 lb 30 lb x 0.01 lb
NTEP* Displayed
Resolution 3,000d
Construction High-grade polymer housing with stainless steel pan
Pan Dimensions 7.9W x 11.4D in. / 200W x 290D mm
Leveling Components 4 adjustable rubber feet with integral rear mounted level
bubble indicator
Display 3-window backlit LCD, front and rear, Weight-Unit Price-
Total Price
6-digit (5-digit for Weight), 7-segment, 0.5 in./12 mm
high characters
Weighing Units lb
Application Modes Price computing for items by count and weight, 25 PLU
memory
Keyboard Numeric, 17-key raised, tactile membrane switch with
key-press beeper
Span Calibration 2/3 and full scale capacity
Tare Range To full capacity by subtraction
Zero Range At power-on: ±10% / keyboard: ±2% full scale
capacity
Stabilization Time within 2 seconds
Power 12VDC 800mA AC Adapter (included) /
6 D-cell alkaline batteries (not included)
Battery Operation 60~70 hours of continuous use
Safe Overload 150% Full Scale Capacity
Operating Temperature
Range 14°F to 104°F / -10°C to 40°C
Storage Temperature
Range -4°F to 158°F /-20°C to 70°C
Humidity Range 10% to 85% humidity, non-condensing
Scale Dimensions 12.3W x 12.9D x 4.6H in. / 312W x 328D x117H mm
Shipping Dimensions 14.8W x 14.8D x 8.5H in. / 376W x 376D x 216H mm
Scale Unit Weight 7.0 lb / 3.2 kg
Shipping Weight 10.6 lb / 4.8 kg
* NTEP CC No. 08-058

RA Series EN-15
8.2 Drawings
8.3 Compliance
Compliance to the following standards is indicated by the corresponding mark on the
product.
Marking Standard
This product conforms to the EMC directive 89/336/EEC, the Low
Voltage Directive 73/23/EEC and the Non-automatic Weighing
Instruments Directive 90/384/EEC. The complete Declaration of
Conformity is available from Ohaus Corporation.
UL60950-1: 2003
EC Emissions Note
This device complies with EN61326/CISPR 11 Class B Group 1.

EN-16 RA Series
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.
For disposal instructions in Europe, refer to www.ohaus.com/weee.
FCC Note
This equipment has been tested and found to comply with the limits for a Class B
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.
Industry Canada Note
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du
Canada.
ISO 9001 Registration
In 1994, Ohaus Corporation, USA, was awarded a certificate of registration to ISO
9001 by Bureau Veritus Quality International (BVQI), confirming that the Ohaus
quality management system is compliant with the ISO 9001 standard’s
requirements. On May 15, 2003, Ohaus Corporation, USA, was re-registered to the
ISO 9001:2000 standard.

RA Series EN-17
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.

Ohaus Corporation
19A Chapin Road
P.O. Box 2033
Pine Brook, NJ 07058, USA
Tel: [phone]
Fax: [phone]
With offices worldwide
www.ohaus.com
*80252576*
P/N 80252576 © 2008 Ohaus Corporation, all rights reserved
Printed in China