Oregon Scientific Scale GA 101 User Manual

Oregon Scientific™ High Precision Body Weight  
Monitor with Body Fat Index  
Model: GA101  
User Manual  
TABLE OF CONTENTS  
Introduction ................................................................................................................. 2  
Warnings ..................................................................................................................... 2  
Key Features ............................................................................................................... 4  
How the Body Weight Monitor Works....................................................................... 4  
Brief Description ........................................................................................................ 4  
Body Mass Index ....................................................................................................... 5  
What is Body Mass Index (BMI)?........................................................................... 5  
How to Interpret BMI .............................................................................................. 5  
Body Fat Index .......................................................................................................... 6  
What is Body Fat Index? ........................................................................................ 6  
How Body Fat is Measured .................................................................................... 6  
How to Interpret Body Fat Index ............................................................................ 6  
How to Interpret Body Fat Level Indicator.............................................................. 7  
How Body Fat Percentage Fluctuates ................................................................... 7  
Safety and Care Instructions ..................................................................................... 8  
Getting Started ............................................................................................................ 9  
Unpacking the Body Weight Monitor ......................................................................... 9  
Selecting a Location for the Body Weight Monitor .................................................... 9  
Setting up for the First Time ...................................................................................... 9  
Setting the Height and Age for a User....................................................................... 10  
Taking Measurements ................................................................................................ 11  
Taking Measurements with Stored User Settings ..................................................... 11  
Taking Measurements as a Guest User .................................................................... 12  
Taking Weight-Only Measurements .......................................................................... 12  
Resetting ..................................................................................................................... 13  
Replacing the Batteries .............................................................................................. 13  
Addendum ................................................................................................................... 13  
Weight Unit Conversion............................................................................................. 13  
Troubleshooting Guide .............................................................................................. 14  
Specifications ............................................................................................................. 15  
Additional Resources ................................................................................................. 15  
1
 
with warm soapy water after handling. Remove the batteries if the Body Weight Monitor will  
be in storage for an extended period of time.  
• Liquids, moisture, and foreign objects – Never insert foreign objects in or spill liquids on the  
product, as this can cause electric shock and damage to the unit. Do not immerse this  
product in water.  
OTHER NOTICES  
Disposing of this Product  
When disposing of this product, do so in accordance with your local waste disposal  
regulations.  
Statement of Responsibility  
Oregon Scientific assumes no responsibility for any incidental losses (such as the costs of  
recording or the loss of income from recording) incurred as a result of faults with this product.  
Oregon Scientific will not be held liable for any bodily injury, death, property damages or any  
other claims of whatever nature resulting from the misuse or negligence of this product,  
whether intentional or unintentional. Furthermore, Oregon Scientific will not be responsible  
for any deviations in the usage of the device from those specified in the user instructions or  
any unapproved alterations or repairs of the product.  
3
 
KEY FEATURES  
Front view  
Back view  
LCD Display  
- Button  
+ Button  
Set button  
Metal Foot pads  
Scale Platform  
Reset button  
User Setting Switches  
Carrying Handle  
Battery Compartment  
LCD display symbols  
HOW THE BODY WEIGHT MONITOR WORKS  
BRIEF DESCRIPTION  
When you step on the Monitor, a weight measurement is taken. The Monitor can also help  
you to automatically calculate your Body mass index (BMI) and Body Fat Index, two  
internationally accepted indicators of health and obesity levels.  
Weight alone is not a good enough indicator of health because it does not differentiate  
between muscles, tissues, bones, and fat. As such, when a person loses weight, it may be  
a result of the loss of muscles or body water but not fat. In order to better understand your body  
composition and current health level, both the BMI and Body Fat Index should be observed.  
Neither the BMI nor the Body Fat Index, taken individually, gives the complete picture of your  
health. For example, bodybuilders often have high BMI (considered obese) but low Body Fat  
Index (considered healthy). The BMI, in this case, does not take into account that the extra  
weight is from muscles and water but not fat. Conversely, a very thin person may have low  
Body Fat Index (considered healthy) but also lower-than-accepted BMI (considered unhealthy).  
This means that the person is still at risk health-wise, despite the low Body Fat Index.  
NOTE  
Consult your physician before you begin a new diet or exercise program.  
4
 
BODY MASS INDEX  
What is Body Mass Index (BMI)?  
Body mass index (BMI) is a widely used international standard that measures weight to height  
ratio to determine obesity. BMI is expressed by the following terms:  
Body weight (kg)  
BMI =  
[Body height (m)]2  
The BMI is only a general indicator of your health level. As such, accuracies may vary  
depending on your body type and composition. Consult your physician to find out more about  
your current health.  
NOTE To convert pounds or stone pounds to kilograms, and inches to meters, refer to the  
conversion reference on page 13.  
How to Interpret BMI  
Use the resulting BMI value with the chart below to determine your current level of health:  
NOTE Asians have a separate BMI range due to their different body composition.  
Description  
Health Indication  
Underweight  
BMI Range  
Your body weight is currently lower than  
average. Work toward healthy, regular food  
intake and exercise routine to build up your  
health to recommended levels.  
Less than 20.0*  
* Asian BMI:  
Less than 18.5  
Your health is at the recommended level.  
Maintain a balanced diet and exercise to  
keep your current level of health.  
Recommended  
Overweight  
Obese  
20.0 – 25.0*  
* Asian BMI:  
18.5 – 23.0  
Your body weight may be above normal.  
Increase your exercise and work out a diet  
plan to lower your risk for serious illness.  
25.1 – 29.9*  
* Asian BMI:  
23.0 – 29.9  
At this level, you may be at risk for heart  
disease, high blood pressure, and other  
illnesses. Consult with your doctor to develop  
a proper health and fitness plan.  
30.0 or greater*  
* Asian BMI:  
30.0 or greater  
NOTE  
Group  
Children and  
teenagers  
BMI should not be used as a guideline for health risks for the following groups:  
Reason  
BMI ranges are only based on adult heights.  
Athletes and  
bodybuilders  
Pregnant or  
nursing women  
People over the  
age of 65  
BMI does not differentiate between fat and muscle, thus making it  
inaccurate for persons with high muscle volumes.  
This group generates naturally high fat reserves as part of the  
pregnancy.  
Fat reserves naturally tend to be higher with older persons.  
5
 
References:  
1. Jequier, E. (1987) Energy, obesity, and body weight standards.  
2. American Journal of Clinical Nutrition, 45, 1035-1047  
3. Japan Society for the Study of Obesity  
4. The Weight Loss Research Center  
5. myDr. (www.mydr.com.au)  
BODY FAT INDEX  
What is Body Fat Index?  
Body Fat Index is a measurement of the total percentage of fat in your body. For example,  
if you weigh 70 kg and your Body Fat Index is 15%, then you are retaining 10.5 kg of fat. The  
remaining weight is composed of muscles, bones, tissues, and body water.  
Among overweight people, it is excess fat and not weight alone that carries health risks. Since  
the body comprises elements of varying densities, weight or BMI cannot fully measure exactly  
how much excess fat a person carries. For example, two people of the same weight and BMI  
may have big differences in body composition. One may carry excess fat while the other carry  
acceptable level of fat needed to regulate the body. As such, a Body Fat Index measurement  
is an effective assessment of your current health level.  
Essential fat is necessary for bodily functions, since it helps to maintain body  
NOTE  
temperature an insulate organs and tissues.  
How Body Fat is Measured  
The Monitor uses the method of Bioelectrical Impedance Analysis (BIA)  
to measure body fat. This method gives high precision, is completely  
safe, and is widely used in the medical field. The principle of BIA is as  
follows: The Monitor sends a low, harmless electrical signal through  
your body that flows freely. As such, the machine uses this to calculate  
the body fat Index (along with the person’s age, gender, height, weight,  
and build).  
BIA Foot-to-Foot  
Measuring Diagram  
How to Interpret Body Fat Index  
Use the resulting Body Fat Index value with the chart below to determine your current level  
of health:  
Gender  
Body Fat  
Standard  
High  
Age Group in Years  
Under 30  
>28%  
30-39  
>29%  
40-49  
>30%  
Over 49  
>31%  
Adult Men  
Moderately High  
Optimal Range  
Low  
22-28%  
11-21%  
6-10%  
<6%  
23-29%  
12-22%  
7-11%  
<7%  
24-30%  
13-23%  
8-12%  
<8%  
25-31%  
14-24%  
9-13%  
<9%  
Very Low  
High  
Adult Women  
>32%  
>33%  
>34%  
>35%  
Moderately High  
Optimal Range  
Low  
26-32%  
15-25%  
12-14%  
<12%  
27-33%  
16-26%  
13-15%  
<13%  
28-34%  
17-27%  
14-16%  
<14%  
29-35%  
18-28%  
15-17%  
<15%  
Very Low  
6
 
How to Interpret Body Fat Level Indicator  
In addition to displaying your Body Fat Index, the Monitor provides a Body Fat Level Indicator  
on the LCD screen to help you immediately gauge your level of health without referring to the  
chart above.  
Very Low  
Low  
Optimal  
High  
Very High  
Body Fat Standard Reason  
Very High  
Body Fat Index at this level indicates the person is seriously  
obese to a degree that this can have adverse health  
consequences. Maintaining this level of fat for a long period of  
time places the person at risk of hypertension, heart disease,  
and diabetes. Consult your doctor on a long-term weight loss  
and exercise program.  
High  
It is likely that the person is obese. Careful implementation and  
monitoring of diet and exercise is recommended.  
This is the ideal level of body fat for the average person.  
For athletes, this is a desirable level of body fat. For regular  
persons, a regular diet should be considered to improve the  
balance of body composition.  
Optimal  
Low  
Very Low  
The level of body fat is dangerously low. Persons in this level  
should seek to implement a regular diet. Maintaining this level of  
body composition can place a person at risk of malnutrition and  
other health risks.  
Reference:  
1. Robert M. Ross, Andrew S. Jackson: Exercise concepts, calculations, and computer  
applications.  
Carmel, Ind.: Benchmark Press, 1990.  
How Body Fat Index Fluctuates  
It is recommended that you choose a time slot to measure body fat and then monitor it  
regularly at the same condition. Ideally, body hydration level is most stable during late  
afternoon, right before dinner. Please note the many factors may alter an individual’s body  
fat reading, including alcohol consumption, taking a bath or exercising, waking up, eating,  
fever and illnesses.  
7
 
SAFETY AND CARE INSTRUCTIONS  
CARING FOR YOUR BODY WEIGHT MONITOR  
To ensure you receive the maximum benefit from using this product, please observe the  
following guidelines.  
Clean with a damp cloth. Do not use abrasive or corrosive cleaning  
agents.  
Do not attempt to repair the product yourself. This will terminate the  
warranty and may expose you to dangerously high voltages. Contact the  
dealer or a qualified repairman if the product requires servicing.Do not  
store the Monitor in an upright position.  
Do not store the Monitor in an upright position.  
Do not place objects on the Monitor or stand it in an upright position.  
Do not expose the product to excessive force, dust, temperature  
fluctuations, or humidity.  
Allow the Monitor to settle for at least 30 minutes whenever there is a  
sudden change in ambient environment (e.g., from an outdoor area to an  
air conditioned room).  
SAFETY PRECAUTIONS  
Please observe the following safety precautions when setting up and using your Body Weight  
Monitor.  
Do not immerse the product in water or place the Monitor on a wet  
surface.  
Keep the product away from heat sources such as radiators, stoves, and  
heaters.  
Do not use the Monitor on an uneven surface.  
Use carpet feet (supplied) if you place the Monitor on a carpet.  
8
 
GETTING STARTED  
UNPACKING THE BODY WEIGHT MONITOR  
When you unpack your Body Weight Monitor, make sure to keep all the packing materials  
in a safe place, in case you need to later transport or return it for servicing. In the box, you  
will find:  
The Monitor  
4x AA 1.5-V Batteries  
User Manual  
4x Carpet Feet  
Selecting a Location for the Body Weight Monitor  
Diagram Instructions  
Place the body weight Monitor on a hard, even  
floor surface. Avoid thick carpeting or use the  
supplied carpet feet.  
NOTE  
Placing the Monitor on the floor will display  
on the LCD. This indicates that it is  
calibrating. Simply leave the Monitor on the floor for 1-2 seconds to allow self-calibration.  
Setting up the First Time  
To set up your Body Weight Monitor:  
Diagram  
Instructions  
1. Remove and discard the clear plastic tab  
inside the battery compartment.  
2. Set the measurement unit:  
2.1. Press and hold  
until “lb” flashes.  
2.2. Press + or - to set unit in lb (pounds),  
st-lb (stones), or kg (kilograms).  
2.3. Press  
to confirm the change.  
NOTE  
If “lb” or “st-lb” is selected, the unit  
for your height is defaulted to feet and  
inches. If “kg” is selected, the unit for  
height is set to centimeters.  
9
 
Setting the Height and Age for a User  
With this product, you can set and store the age and height for up to four people (users 1 to  
4) who regularly use the Body Weight Monitor.  
Once you set the height and age for a user, the GA101 can automatically calculate the body  
mass index (BMI) and Body Fat Index whenever the person uses the Monitor.  
NOTE  
If the batteries are low, you cannot store the height and age to memory.  
Diagram  
Instructions  
1. Each user is represented by the four user  
setting switches at the edge of the Monitor.  
Press 1, 2, 3, or 4 to select one of the users.  
NOTE  
Make sure not to store your height and age  
over someone else’s existing profile.  
2. Select your gender:  
2.1 Press and hold  
flashes.  
until the Male icon  
2.2 Press + or - to toggle between genders.  
2.3 Press to confirm the change.  
3. Enter your current age:  
3.1 Press + or - to adjust the value.  
3.2 Press  
to confirm.  
4. Enter your height  
4.1 Press + or - to adjust the value.  
4.2 Press  
to confirm.  
NOTE  
To enter your height in feet and inches,  
switch the Monitor to “lb” or “st-lb”. (Page 9)  
10  
 
TAKING MEASUREMENTS  
If you have entered a user setting, you can make use of the saved settings to automatically  
find out your weight, BMI, and Body Fat Index. For users who do not have settings stored, you  
can choose to take measurements as a “Guest User”.  
NOTE  
It is necessary that you step onto the Monitor with your bare feet. The electric signal  
sent from the Monitor cannot give readings if socks or shoes are worn.  
TAKING BODY FAT MEASUREMENTS WITH STORED USER SETTINGS  
Diagram  
Instruction  
1. Press user setting switch 1, 2, 3, or 4 to select  
the user corresponding to your settings. The  
LCD will show your height, gender and age.  
2. Wait until your settings disappear and the  
weight “0.0” is displayed.  
3. Step on the Monitor. Stand still while the  
measurement is being taken. The Monitor will  
beep when the measurement is complete.  
The weight, BMI, and Body Fat Index will  
display.  
NOTE  
If “  
” is shown, the Monitor is unstable  
while measuring your weight. Make sure to  
remain still and place the Monitor on a flat  
surface. Use the carpet feet if the ground is  
uneven. Step off the Monitor and follow the  
instructions from the beginning.  
NOTE If “  
” is shown, you have stepped on  
the Monitor too early. Step off the Monitor and  
follow the instructions from the beginning.  
NOTE  
If “ ” is shown, the maximum loading  
capacity for the Monitor has been exceeded.  
Step off the Monitor and try again with less  
than 150kg of weight.  
NOTE  
If you wait for too long before stepping  
on the Monitor, the LCD display will go blank.  
Step off the Monitor and follow the instructions  
again from the beginning.  
11  
 
TAKING MEASUREMENTS AS A GUEST USER  
Diagram Instruction  
1. For users without stored settings, simply step  
on the Monitor while the LCD screen is blank.  
NOTE  
If “  
” is shown, the Monitor is unstable  
while measuring your weight. Make sure to  
remain still and place the Monitor on a flat  
surface. Use the carpet feet if the ground is  
uneven. Step off the Monitor and follow the  
instructions from the beginning.  
NOTE  
If “  
” is shown, you have stepped on  
the Monitor too early. Step off the Monitor and  
follow the instructions from the beginning.  
2. Stand still while the measurement is being  
taken. The Monitor will beep and the Male  
icon will flash.  
NOTE If “ ” is shown, the maximum loading  
capacity for the Monitor has been exceeded.  
Step off the Monitor and try again with less  
than 150kg of weight.  
3. Step off the Monitor and select your gender:  
3.1 Press + or - to toggle between genders.  
3.2 Press  
to confirm.  
4. Enter your current age:  
4.1 Press + or - to adjust the value.  
4.2 Press  
to confirm.  
5. Enter your height :  
5.1 Press + or - to adjust the value.  
5.2 Press  
to confirm.  
NOTE To enter your height in feet and inches,  
switch the Monitor to “lb” or “st-lb”.  
6. Your weight, BMI, and Body Fat Index are  
then displayed.  
TAKING WEIGHT-ONLY MEASUREMENTS  
The Body Weight Monitor is equipped with a patented STEP-ON mechanism to help you  
take Body Weight measurement without switching on the Monitor. You do not need to wait  
for measurements like the majority of scales in the market.  
To measure your body weight only, just step on the Monitor then step off after your body  
weight is shown. Alternatively, you can tap on your User Setting Switch, then step on the  
Monitor after "0.0" is shown on the display. Remain on the Monitor until your body weight  
is shown. After a moment, your BMI will also be calculated.  
12  
 
RESETTING  
The reset button is located in the battery compartment on the back of the Monitor. Use a blunt  
stylus such as a paper clip to press the button.  
REPLACING THE BATTERIES  
This product requires four (4) 1.5-volt AA batteries to operate (supplied).  
Diagram  
Instructions  
1. Replace the batteries whenever the display  
shows one of these signs:  
2. Remove the old batteries and set aside.  
3. Insert the new batteries. Be sure to match the  
polarity as shown in the diagram.  
4. Replace the battery compartment lid and  
close.  
NOTE  
The display shows "CAL" once you place  
the Monitor on a horizontal surface. Just leave  
the Monitor on the floor for 1-2 seconds to allow  
self-calibration.  
NOTE  
Batteries can be harmful to the environment. Contact your local waste disposal  
authority for proper disposal instructions.  
ADDENDUM  
Weight Unit Conversion  
Unit  
Description  
Geographic  
application  
Conversion  
kg  
lb  
Metric kilogram  
Imperial pound  
Global  
1 kg = 2.20 lb  
1 kg = 0.16 stone  
1 lb = 0.45 kg  
United States  
United Kingdom  
1 lb = 0.07 stone  
1 stone = 14.0 lb  
1 stone = 6.36 kg  
st-lb  
British stone pound  
13  
 
TROUBLESHOOTING GUIDE  
This section includes a list of frequently asked questions for problems you may encounter with  
your Body Weight Monitor. If the product is not operating as you think it should, check here  
before arranging for servicing.  
Problem  
Symptom  
Check this  
Remedy  
No power  
The display is  
dim.  
The batteries  
are low.  
Replace with new batteries (p.13).  
The display is  
blank.  
Batteries are  
exhausted.  
Batteries are  
inserted  
Replace with new batteries (p.13).  
Insert the batteries correctly  
(p.13).  
incorrectly.  
Error message  
Display shows Batteries are  
Replace the batteries.  
.
low.  
shown on  
the display.  
The weight on  
the Monitor is  
unevenly  
distributed or  
unstable.  
Make sure to remain still and  
place the Monitor on a flat  
surface. Use the carpet feet if the  
ground is carpeted or uneven.  
shown on  
the display.  
You have  
stepped on the  
Monitor too  
early.  
For user with saved settings, wait  
until the display shows the weight  
as “0.0” before stepping on.  
Weight, BMI,  
and Body Fat  
Index  
Monitor shows The Monitor is  
The maximum weighing capacity  
is 150kg (330 lb / 23st - 8lb).  
Remove the weight from the  
Monitor.  
” when  
overloaded.  
weighing.  
Display  
problem  
The  
measurement  
is inaccurate.  
The Monitor is  
uneven or on  
the carpet.  
Use the supplied carpet feet or  
place the Monitor on a flat, even  
hard surface.  
Socks or shoes  
are worn.  
Remove your socks, shoes, and  
other heavy accessories before  
using the Monitor.  
The entered  
gender, age, or  
height is  
Re-enter your user settings with  
the correct values.  
wrong.  
Measurements  
vary drastically  
after a short  
period.  
Fluctuations in body fat during the  
day are normal. Refer to p.7 for  
information regarding this.  
Weight does  
not display  
The Monitor  
needs to be  
reset.  
Reset the Monitor (p.13).  
14  
 
SPECIFICATIONS  
Dimensions:  
Width x Depth x Height  
Weight  
315(w) x 340(d) x 50(h) mm  
1.8kg (excluding batteries)  
Weight measurement:  
Weighing mechanism  
Weight units  
4 load cell Strain-gauge System  
kilogram (kg) / pounds (lb) / stone pounds (st-lb)  
150kg / 330 lb / 23st-8lb  
Maximum Weighing Capacity  
Graduation  
0.1 kg / 0.2 lb  
BMI:  
BMI measurement range  
Body Fat measurement:  
Measurement mechanism  
Body fat measurement range  
Body fat Index display resolution  
Gender  
up to 50 kg/m2  
6 conductive pads BIA technology  
5 – 75%  
0.1%  
Male / Female  
7 to 99 years old  
Age  
Height input:  
Height units  
centimeters (cm) / feet (‘) and inches (“)  
80 – 230.0 cm / 2’ 7.5” – 7’ 6.6”  
0.1cm or 0.1”  
Min / Max height  
Height resolution  
Power:  
Power supply  
4xLR6 / AA / UM-3 1.5v batteries  
auto-off after 5 – 10 seconds  
Power save  
Operating environment:  
Operation temperature  
5° C … 45° C (41° F…113° F)  
at 85% relative humidity  
Storage temperature  
-5° C ….60° C (23° F … 140° F)  
at 85% relative humidity  
ADDITIONAL RESOURCES  
and other Oregon Scientific™ products such as digital cameras, telephones, hand-held  
organizers, alarm clocks, and weather stations. The website also includes contact information  
for our customer service department, in case you need to reach us.  
Help us protect the environment. Recycle the packaging, batteries, and product after  
you no longer need them.  
© 2003 Oregon Scientific. All rights reserved.  
15  
 

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