Cresta Care CBS350 Personal Scale with Body Fat Analysis - User Manual
Congratulations on your purchase of the Cresta Care CBS350 personal scale with body composition analysis. We are confident that you have acquired a high-quality product that will provide many years of enjoyment. Please read this user manual carefully before using the product, even if you are familiar with similar products. It offers useful tips for optimal use.
For any questions after reading this manual, please email us at info@cresta-international.com. We will respond to your query promptly.
Contact Information:
CRESTA INTERNATIONAL B.V.
ROLBRUGWEG 4
NL-1332AS ALMERE
info@cresta-international.com
www.cresta-care.nl
Safety and User Information
The warning signs and symbols are essential for the correct and safe use of this product and protect you and others from injury. Below are the meanings of the warning symbols found on the scale or in this manual:
- Symbol for "Read the User Manual Carefully": ?
- Symbol for: DC Power: ⚡
- Symbol for Producer Details: ?
- Symbol for: Series Number: ?
- Symbol for: Manufacturer: ?
- Symbol for: "Conformity with EU Requirements": ✅
- Symbol for: "Environmental Protection": ♻️ - Do not dispose of electronic waste with household waste. Deliver it to designated collection points in your municipality. Contact your municipality for local regulations.
⚠️ ATTENTION
This scale allows you to monitor your health. It is designed for healthy users aged 10 years and older to measure and monitor various body data. The data provided is not intended as treatment, cure, or prevention of any disease. Consult your doctor if in doubt.
- This product is not suitable for pregnant women. Potential effects on the fetus are unknown.
- This product is unsuitable for individuals with pacemakers or other medical implants.
- This product should not be used by persons who are acutely ill or chronically ill and are taking medication that affects body fluid levels. The accuracy of measurements for such individuals cannot be verified. Seek specific medical advice from your doctor.
- The manufacturer will provide circuit board drawings, component lists, etc., upon request.
- WARNING: Do not make any modifications to this product.
- Use this product as described in the user manual. Improper use can cause electric shock, fire, or other hazardous situations.
- Store this product in an environment as indicated in the user manual.
- Do not expose this product to extreme temperatures, direct sunlight, moisture, or corrosive environments.
- Especially after a shower or bath, do not step on the scale with wet feet to prevent slipping.
Usage Instructions and Tips
This body fat analysis scale measures your weight and uses bio-electrical impedance analysis (BIA) technology to determine your body fat percentage, total body water, bone mass, and muscle mass for generally healthy children aged 10-17 and healthy adults. The product is intended for household use only.
Tips for Accuracy:
To ensure measurement accuracy, please follow these instructions when starting a measurement:
- Place the scale on a flat, hard surface. Soft surfaces like carpets affect the scale's performance.
- Step onto the scale with bare feet. Stand still and maintain full contact with the electrodes until the measurement is complete.
- Preferably, measure no earlier than 2 hours after getting up or eating. Avoid measuring immediately after exertion, sauna, bath, drinking, or eating.
- Measure as consistently as possible at the same time of day, on the same scale, and on the same hard, flat surface.
- To achieve maximum accuracy and repeatability, we recommend using the product at the same time of day and in the same location.
- The condition of your foot soles can influence the measurement. The natural effect of aging or activity can harden the skin. For best results, measure with clean, slightly moist feet. If you experience issues with the scale's operation, please contact our Customer Service Department.
Body fat percentage varies with body moisture levels and can be influenced by dehydration or fluid retention caused by alcohol consumption, menstruation, illness, intensive sports, etc.
Components Overview
The scale consists of the following parts:
- LCD Display: Shows measurements and settings.
- Electrodes: For BIA measurement (contact with bare feet).
- Buttons:
- ▼ (Down): Press to go down in settings.
- SET: Press to confirm a value in settings.
- ▲ (Up): Press to go up in settings.
- UNIT: Press to select the desired unit (e.g., kg, lb, st).
- Battery Compartment: Located on the back of the scale.
Contents of the Box:
- Glass scale with body fat analysis CBS 350
- 2 x CR2032 button cell batteries (3V each)
- User Manual
Operation
Setting the Measurement Unit
After correctly inserting the batteries, you can set the measurement unit on the back of the scale using the "UNIT" button. The factory default is KILOGRAM. By pressing the indicated button, you can choose between POUND and STONE units.
Note: The scale automatically turns off after 10 seconds of inactivity.
Setting Up Your User Profile
This scale allows up to 8 different users to create a profile. Follow the instructions below to assign each user a personal number and input your personal profile details, including gender, height, and age.
- Assigning a User Number: When the scale is in "OFF" mode after correct battery installation, press the "SET" button. The system will prompt you to choose a user number. "P1" will flash. Use the up/down arrow buttons to select a number from P1 to P8. Press "SET" to confirm your choice.
- Selecting Gender: After confirming your user number, the system will ask for your gender. The figure in the display will flash. Use the arrow buttons to choose between MAN, VROUW (Woman), SPORTMAN, or SPORTVROUW. Press "SET" to confirm your selection.
Definition of Sportman/Sportwoman: A sportsman or sportswoman is considered a person who engages in approximately 12 hours of intensive sport per week, with a resting heart rate of around 60 beats per minute.
Completing Profile Setup
After confirming your age, the display will show "0.0", and you are ready to weigh yourself.
Repeat these instructions for other users or to change your existing data. You can also follow the same steps to make changes to your personal profile.
Activating Your Scale
- Tap the center of the scale with your foot.
- "0.0" will appear in the display.
- The scale will now turn off and is ready for use.
This procedure should be repeated if the scale is moved. Otherwise, you can step directly onto the scale.
Weighing Only
Your scale functions as a conventional scale. No special procedures are necessary. Once activated as described above, simply step onto the scale to measure your weight.
- Place the scale on a smooth, hard surface. Carpets or uneven floorboards can affect weighing accuracy.
- Step onto the scale and stand still until your weight is measured.
- The scale will display your weight and automatically turn off after a few seconds.
First Measurement
- Place the scale on a hard, smooth surface.
- Press the "SET" button.
- The user number will flash. Use the arrow buttons to select the correct user number.
- Note: While the user number is flashing, you can change settings. Once done, "0.0" will appear in the display.
- STEP 1: Step onto the scale with bare feet, ensuring "0.0" is visible in the display.
- STEP 2: Stand still on the scale until your weight appears in the display. Maintain contact with the electrodes until the display shows no moving "0" digits.
- STEP 3: The display will now show all measurement results: your weight, body fat, body water, muscle mass, and bone mass. The data will be shown 3 times.
If the measurement could not be completed, only the weight will be displayed. For solutions, refer to the "Troubleshooting" section at the end of this manual.
Daily Measurement
- Using the patented sensor technology, the scale automatically activates when you step on it with bare feet.
- Stand still until the weight in the display is stable. Maintain full contact with the electrodes until no "0" digit moves in the display.
- The system will recognize your user number based on the new measurement and display comparable historical data. The measurement results will then be shown 3 times.
- If the system detects multiple users with similar data, you will be prompted to choose between user numbers (e.g., P1 and P2). Use the up/down arrow buttons to select the correct user. The measurement results will then be saved for the correct user and displayed 3 times.
If the system cannot identify the user, only the weight will be displayed.
Troubleshooting
Error Messages
| Error Message | Description | Solution |
|---|---|---|
OVERWEIGHT. THE SCALE SWITCHES OFF AFTER 4 SECONDS. | STOP USING THE SCALE. | |
LOW BATTERY. THE SCALE SWITCHES OFF AFTER 4 SECONDS. | REPLACE BOTH CR2032 BATTERIES. REPLACE ALL BATTERIES AT THE SAME TIME. DO NOT MIX OLD AND NEW BATTERIES. |
During Measurement
| Problem | Cause | Solution |
|---|---|---|
| ABNORMAL MEASUREMENT RESULT. HIGH OR LOW OR LARGE DIFFERENCE BETWEEN 2 MEASUREMENTS | INCORRECT POSITION | STEP ON THE SCALE WITH BARE FEET AND STAND STILL. |
| THE PRODUCT MAY BE ON A SOFT SURFACE | PLACE THE SCALE ON A HARD, SMOOTH SURFACE. | |
| YOUR HANDS OR FEET MAY BE TOO DRY | MOISTEN YOUR FEET WITH A DAMP CLOTH AND KEEP THEM MOIST UNTIL THE MEASUREMENT BEGINS. | |
| NO DISPLAY WHEN THE PRODUCT IS SWITCHED ON | NO BATTERIES INSERTED | INSERT BATTERIES (SEE BATTERY INSTALLATION). |
| BATTERIES NEARLY EMPTY | REPLACE BOTH CR2032 BATTERIES. DO NOT MIX OLD AND NEW BATTERIES. | |
| NO MEASUREMENT OF BODY FAT, BODY WATER, MUSCLE MASS, AND BONE MASS | YOU ARE STANDING ON THE SCALE WITH SOCKS OR SHOES ON. | ALWAYS STEP ON THE SCALE WITH BARE FEET AND MAINTAIN GOOD CONTACT WITH THE ELECTRODES. |
| THE SYSTEM DOES NOT RECOGNIZE A USER NUMBER WITH RECENT DATA. | SELECT A USER NUMBER. SEE PREVIOUS INSTRUCTIONS. | |
| THE USER HAS NOT SELECTED A USER NUMBER FOUND BY THE SYSTEM. | SELECT A USER NUMBER. SEE PREVIOUS INSTRUCTIONS. | |
| THE SCALE SWITCHES OFF | BATTERIES NEARLY EMPTY. | REPLACE BOTH CR2032 BATTERIES AT THE SAME TIME. DO NOT MIX OLD AND NEW BATTERIES. |
Specifications
| PRODUCT NAME | GLASS SCALE WITH FAT ANALYSIS CBS 350 |
| DIMENSIONS | SCALE: APPROX. 310 X 310 X 18.8 MM |
| NET WEIGHT | APPROX. 1.9 KG |
| DISPLAY | LCD DISPLAY WITH BLUE BACKLIGHT |
| MEASUREMENT UNIT | KILOGRAM/POUND/STONE |
| MEASUREMENT RANGE | 5 KG – 180 KG / 11 LB – 397 LB / 0 ST – 28 ST |
| DIVISION | 0.1 KG / 0.2 LB |
| ACCURACY | 5-50 KG: APPROX. 0.3 KG; 50-100 KG: APPROX. 0.4 KG; 100-150 KG: APPROX. 0.5 KG; 150-180 KG: APPROX. 0.7 KG |
| AMBIENT TEMPERATURE | 0° – 40°C; HUMIDITY < 90% |
| STORAGE TEMPERATURE | -20° – 60°C; HUMIDITY 10% – 93% |
| VOLTAGE | 6V (2 X CR2032 BATTERIES) |
| ACTIVATION METHOD | SENSOR ON TECHNOLOGY |
| AUTO-OFF | APPROXIMATELY 10 SECONDS AFTER 0.0 IN THE DISPLAY |
| ACCESSORIES | 1. 2 X CR2032 BATTERIES 2. USER MANUAL |
| OPERATION | CONTINUOUS OPERATION |
Regarding the Accuracy of this Product:
- This product is subjected to very strict quality control before delivery, and its accuracy is guaranteed by the manufacturer. Refer to the table above.
- This product is specifically designed for weighing and body composition analysis. It is not intended for weighing goods.
Maintenance and Warranty
Maintenance
When performing regular maintenance, please consider the following:
- Use a dry cloth to remove dust.
- Use a slightly damp cloth to remove dirt, then use a dry cloth to dry the product.
- Do not rinse the scale or immerse it in water or any other liquid.
- Do not use aggressive cleaning agents to remove dirt, as this can cause material discoloration and malfunction.
- Do not open the product. If you encounter a problem, contact the store where you purchased the scale (refer to the enclosed warranty card).
Warranty
- CRESTA guarantees this product for 24 months against material and manufacturing defects from the date of purchase.
- This warranty does not cover damage caused by:
- Incorrect use not in accordance with the user manual.
- Repairs carried out by yourself or improperly.
- Impacts or drops.
- Improper maintenance.
- Incorrect batteries.
Body Data Tables
a) Body Fat Percentage (%): 5% - 60% / 0.1%
Standard for Men
| Measurement | Age | ||||
|---|---|---|---|---|---|
| 20-29 | 30-39 | 40-49 | 50-59 | 60+ | |
| LOW | <13 | <14 | <16 | <17 | <18 |
| NORMAL | 14-20 | 15-21 | 17-23 | 18-24 | 19-25 |
| INCREASED | 21-23 | 22-24 | 24-26 | 25-27 | 26-28 |
| HIGH | >23 | >24 | >26 | >27 | >28 |
Standard for Women
| Measurement | Age | ||||
|---|---|---|---|---|---|
| 20-29 | 30-39 | 40-49 | 50-59 | 60+ | |
| LOW | <19 | <20 | <21 | <22 | <23 |
| NORMAL | 20-28 | 21-29 | 22-30 | 23-31 | 24-32 |
| INCREASED | 29-31 | 30-32 | 31-33 | 32-33 | 33-35 |
| HIGH | >32 | >33 | >34 | >35 | >35 |
Source: Department of Nutritional Sciences, University of Illinois Calculator for Body Fat (www.ag.uiuc.edu/~food-lab/ai/bfc.html)
b) Body Water Percentage (%): 43% - 73% / 0.1%
Source: Wang and Deurenberg: "Water Homeostasis of the Fat-Free Body" American Journal of Clinical Nutrition 1999, 69:833-841
| Range % | Optimal Body Fat Percentage | Optimal Total Body Water Percentage |
|---|---|---|
| MEN | ||
| 4 TO 14% | 70 TO 63% | |
| 15 TO 21% | 63 TO 57% | |
| 22 TO 24% | 57 TO 55% | |
| 25 AND HIGHER | 55 TO 37% | |
| WOMEN | ||
| 4 TO 20% | 70 TO 58% | |
| 21 TO 29% | 58 TO 52% | |
| 30 TO 32% | 52 TO 49% | |
| 33 AND HIGHER | 49 TO 37% | |
Health Tips – About Body Fat
Fat is essential for the human body. It stores energy and protects internal organs. It also regulates body temperature and maintains normal bodily functions. However, excessive body fat is harmful and often associated with a fatty liver, diabetes, and cardiovascular diseases. Self-measurement and self-monitoring of body fat levels are therefore recommended. Since weight measurement alone cannot determine body fat, this scale is equipped with bio-impedance technology, making it an accurate product that helps you quickly and easily gain insight into your body fat.
EMC Guidance
Table 1 Guidance and Manufacturer's Declaration – Electromagnetic Emissions
The device is intended for use in the electromagnetic environment specified below. The customer or user of the device should ensure that it is used in such an environment.
| Emissions Test | Compliance | Electromagnetic Environment – Guidance |
|---|---|---|
| RF Emissions CISPR 11 | Group 1 | The device uses RF energy only for its internal function. Therefore, its RF emissions are very low and are not likely to cause any interference in nearby electronic equipment. |
| RF Emissions CISPR 11 | Class B | |
| Harmonic Emissions IEC 61000-3-2 | Not Applicable | |
| Voltage Fluctuations/Flicker Emissions IEC 61000-3-3 | Not Applicable |
Table 2 Guidance and Manufacturer's Declaration – Electromagnetic Immunity
The device is intended for use in the electromagnetic environment specified below. The customer or user of the device should assure that it is used in such an environment.
| Immunity Test | IEC 60601 Test Level | Compliance Level | Electromagnetic Environment – Guidance |
|---|---|---|---|
| Electrostatic Discharge (ESD) IEC 61000-4-2 | ±8 kV contact ±2 kV air | ±6 kV contact ±8 kV air | Floors should be wood, concrete, or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at least 30%. |
| Electrical Fast Transient/Burst IEC 61000-4-4 | ±2 kV for power supply lines ±1 kV for input/output lines | Not Applicable | Mains power quality should be that of a typical commercial or hospital environment. |
| Surge IEC 61000-4-5 | ±1 kV line(s) to line(s) ±2 kV line(s) to earth | Not Applicable | Mains power quality should be that of a typical commercial or hospital environment. |
| Voltage Dips, Short Interruptions and Voltage Variations on Power Supply Input Lines IEC 61000-4-11 | <5% UT (>95% dip in UT) for 0.5 cycle 40% UT (60% dip in UT) for 5 cycles 70% UT (30% dip in UT) for 25 cycles <5% UT (>95% dip in UT) for 5 s | Not Applicable | Mains power quality should be that of a typical commercial or hospital environment. If the user of the device requires continued operation during power mains interruptions, it is recommended that the device be powered from an uninterruptible power supply or a battery. |
| Power Frequency (50/60Hz) Magnetic Field IEC 61000-4-8 | 3 A/m | 3 A/m | Power frequency magnetic fields should be at levels characteristic of a typical location in a typical commercial or hospital environment. |
NOTE: UT is the a.c. mains voltage prior to application of the test level.
Table 4 Guidance and Manufacturer's Declaration – Electromagnetic Immunity – for ME EQUIPMENT and ME SYSTEMS that are not LIFE-SUPPORTING
The device is intended for use in the electromagnetic environment specified below. The customer or user of the device should assure that it is used in such an environment.
| Immunity Test | IEC 60601 Test Level | Compliance Level | Electromagnetic Environment – Guidance |
|---|---|---|---|
| Conducted RF IEC 61000-4-6 | 3 Vrms 150 kHz to 80 MHz | Not Applicable | Portable and mobile RF communications equipment should be used no closer to any part of the device, including cables, than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter. |
| Radiated RF IEC 61000-4-3 | 3 V/m 80 MHz to 2.5 GHz | Recommended separation distance: d = 1.167 √P (80 MHz to 800 MHz) d = 2.333 √P (800 MHz to 2.5 GHz) where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer, and d is the recommended separation distance in metres (m). Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey, should be less than the compliance level in each frequency range. Interference may occur in the vicinity of equipment marked with the following symbol: ((())) |
NOTE 1: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
Table 6 Recommended Separation Distances Between Portable and Mobile RF Communications Equipment and the ME EQUIPMENT or ME SYSTEM – For ME EQUIPMENT and ME SYSTEMS that are not LIFE-SUPPORTING
The device is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the device can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the device as recommended below, according to the maximum output power of the communications equipment.
| Rated Maximum Output Power of Transmitter (W) | Separation Distance According to Frequency of Transmitter (m) | ||
|---|---|---|---|
| 150 kHz to 80 MHz | 80 MHz to 800 MHz | 800 MHz to 2.5 GHz | |
| 0.01 | Not Applicable | 0.117 | 0.233 |
| 0.1 | Not Applicable | 0.369 | 0.738 |
| 1 | Not Applicable | 1.167 | 2.333 |
| 10 | Not Applicable | 3.690 | 7.378 |
| 100 | Not Applicable | 11.67 | 23.33 |
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (m) can be estimated using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.
NOTE 1: At 80MHz and 800MHz, the separation distance for the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.