TANITA BC-313 Body Composition Scale User Manual

1. Introduction and Overview

The TANITA BC-313 is a compact body composition scale designed for precise health analysis. Utilizing TANITA's advanced Bioelectrical Impedance Analysis (BIA) technology with dual-frequency measurement, it provides highly accurate readings. The scale features a sensitive weighing technique with 50g increments and gravity adjustment for consistent results. Its automatic user recognition simplifies the measurement process, making it as straightforward as using a standard weight scale. The BC-313 measures 10 key body composition values to help you monitor the impact of your fitness or weight management program.

Image 1.1: The TANITA BC-313 Body Composition Scale, a compact device for comprehensive health analysis.

2. Safety Information

Please read all instructions carefully before using the TANITA BC-313 scale. Failure to follow these guidelines may result in inaccurate readings or personal injury.

• Always place the scale on a hard, flat, and stable surface for accurate measurements. Avoid carpets or uneven flooring.
• Do not use this device if you have a pacemaker or other implanted electronic medical device. The Bioelectrical Impedance Analysis (BIA) technology sends a small electrical current through your body, which could interfere with such devices.
• Consult a physician before using the scale if you are pregnant.
• Keep the scale dry. Do not immerse it in water or use it in excessively humid environments.
• Do not jump on the scale or use it for purposes other than body composition measurement.
• Keep out of reach of children.

3. Setup

1. Unpacking: Carefully remove the scale from its packaging. Retain packaging for future storage or transport.
2. Battery Installation: Open the battery compartment located on the underside of the scale. Insert the required batteries (typically AAA or AA, refer to the battery compartment label) ensuring correct polarity (+/-). Close the compartment securely.
3. Placement: Place the scale on a hard, flat, and stable surface. Ensure there are no obstructions beneath the scale. Avoid placing it on carpets, rugs, or uneven tiles, as this can significantly affect measurement accuracy.

Image 3.1: Proper placement of the TANITA BC-313 scale on a hard, flat surface for accurate readings.

4. Operating Instructions

4.1. Setting Up a User Profile

The TANITA BC-313 can store personal data for up to 5 individual users, allowing for personalized tracking. It also features a guest mode for temporary users and an athlete mode for individuals with a high level of physical activity.

1. Select User Number: Press the 'USER' button to select an empty user number (1-5). If a number is already in use, you can overwrite it or select another.
2. Input Personal Data: Use the 'UP' and 'DOWN' arrow buttons to input your personal data:
   • Age: Enter your current age.
   • Gender: Select your gender (male/female).
   • Height: Enter your height in centimeters or inches (depending on unit setting).
   • Athlete Mode (Optional): If you are an athlete (defined as someone who engages in intense physical activity or training for at least 10 hours a week and has a resting heart rate of 60 beats per minute or less), select 'Athlete' mode.
3. Confirm Entries: Confirm each entry by pressing the 'SET' button. The scale will save your profile once all data is entered.

Image 4.1: The TANITA BC-313 features automatic user recognition for up to 5 individuals, simplifying regular measurements.

4.2. Taking a Measurement

1. Prepare for Measurement: Ensure the scale is on a hard, flat surface. Remove shoes and socks.
2. Step On: Step onto the scale barefoot, placing your feet directly on the metal electrodes. Stand still and maintain balance.
3. Automatic Recognition: The scale will automatically detect your user profile (if previously set up) or prompt you to select one using the 'USER' button and arrow keys.
4. Display Readings: Wait for the measurements to be displayed. The scale will first show your weight, followed by other body composition metrics in sequence.
5. Review Results: You can cycle through your results using the 'RESULT' button or wait for the scale to automatically display each metric.

Image 4.2: The display and control buttons of the TANITA BC-313, used for setting up profiles and reviewing measurements.

5. Understanding Your Measurements

The TANITA BC-313 provides detailed insights into your body composition. Understanding these metrics can help you make informed decisions about your health and fitness journey.

• Weight (50g increments): Your body weight is measured with high precision, in increments of 50 grams, allowing for detailed tracking of changes.
• Body Fat Percentage (0.1% increments): Body fat is essential for bodily functions, protecting organs, regulating temperature, and storing vitamins. However, excessive body fat can lead to health issues like cardiovascular disease or diabetes. This measurement helps you monitor your body fat percentage, which is a more accurate indicator of health and fitness progress than weight alone, especially during diet or exercise programs.
• Visceral Fat: Visceral fat is the fat stored around your internal organs in the abdominal cavity. High levels of visceral fat are associated with increased health risks, including cardiovascular diseases and type II diabetes. Monitoring this value is crucial for managing these risks, as increased subcutaneous fat (under the skin) is primarily an aesthetic concern, while visceral fat poses a more significant health threat.
• Total Body Water (100g increments): Water is vital for overall health, with a recommended daily intake of 2-3 liters. Adequate hydration supports cell regeneration, slows aging, maintains blood fluidity, and reduces strain on the cardiovascular system. Optimal hydration also benefits all organs and contributes to healthier skin. This measurement helps you track your body's hydration level in 100g increments.
• Muscle Mass (100g increments): This value indicates your total muscle mass in kilograms. Muscle mass is a critical indicator of metabolic activity, cardiovascular health, immune function, and joint protection. Tracking changes in muscle mass in 100g increments allows you to monitor the effectiveness of your exercise regimen.
• Bone Mineral Mass (100g increments): This measurement provides an estimated bone weight in kilograms. Maintaining strong bones through regular muscle-building exercises (especially outdoors for UV exposure) and a calcium-rich diet is important. For adults, exercise, particularly strength training, helps maintain bone density and slows the age-related breakdown of bone mass (osteoporosis). This value is an indirect, high-quality estimate, where a percentage of lean body mass is attributed to bone mass, and the remainder to muscle mass (including skeletal and organ muscles).
• Basal Metabolic Rate (BMR) in Calories: BMR represents the minimum number of calories your body needs to function at rest. This calculation is based on your fat-free mass (body weight minus fat mass), making it more accurate than methods based on total body weight. It indicates how many calories your body burns daily without any physical activity. Building muscle can increase your BMR, as muscles are metabolically active. When dieting, it is crucial not to consume fewer calories than your BMR, as this could lead to protein breakdown and muscle loss, which is detrimental to health.
• Metabolic Age: Metabolic age compares your Basal Metabolic Rate to the average BMR for your chronological age group. After approximately 16-17 years of age, the body naturally begins to lose muscle and gain fat, leading to a decrease in BMR. Regular physical activity and muscle building can counteract this. If your metabolic age is higher than your actual age, it suggests excessive muscle loss. Improving muscle mass will improve your BMR. If your metabolic age is lower than your actual age, it indicates good physical fitness, often meaning you can maintain your weight more easily even with higher calorie intake.
• BMI (Body Mass Index): BMI is a measure that uses your height and weight to determine if your weight is healthy. It is calculated as weight (kg) divided by the square of height (m).
• Body Build Rating: This rating assesses your weight and fat content relative to your height, gender, age, and average values. It is displayed as a dimensionless number (typically 1 to 9). An optimal rating generally indicates a higher muscle mass and lower body fat percentage.

6. Maintenance

Proper care and maintenance will ensure the longevity and accuracy of your TANITA BC-313 scale.

• Cleaning: Wipe the scale's surface with a soft, damp cloth. For stubborn marks, use a mild detergent. Do not use abrasive cleaners, chemical solvents, or immerse the scale in water.
• Storage: Store the scale in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity. Avoid placing heavy objects on the scale when not in use.
• Battery Replacement: Replace the batteries when the low battery indicator appears on the display. Always replace all batteries at the same time with new ones of the specified type. Do not mix old and new batteries or different types of batteries.

7. Troubleshooting

If you encounter issues with your TANITA BC-313 scale, refer to the following common troubleshooting steps:

• Inaccurate Readings:
  • Ensure the scale is placed on a hard, flat, and stable surface, not on carpet or uneven flooring.
  • Make sure your feet are clean, dry, and positioned correctly on the metal electrodes.
  • Verify that your personal data (age, gender, height) in your user profile is correct.
  • Avoid taking measurements immediately after intense exercise, bathing, or consuming large amounts of food/drink, as this can affect hydration levels and readings.
• Display Not Working or Blank:
  • Check the battery installation and ensure batteries are inserted with correct polarity.
  • Replace all batteries with new ones.
  • Briefly step on the scale to activate it.
• Error Messages (e.g., 'Err', 'Lo'):
  • 'Lo': Indicates low battery. Replace batteries.
  • 'Err': May indicate an unstable measurement or an issue with body contact. Step off the scale, wait for it to turn off, and then try again, ensuring you stand still with bare feet on the electrodes.
  • For other specific error codes, refer to the comprehensive manual or contact customer support.

8. Specifications

Image 8.1: Dimensions of the TANITA BC-313 scale (approx. 31.6 cm x 21.69 cm x 2.69 cm).

9. Warranty and Support

For warranty information, product registration, or technical support, please refer to the official TANITA website or contact your authorized retailer. It is recommended to keep your proof of purchase for any warranty claims.

TANITA products purchased on Amazon must be sold and shipped by Amazon or TANITA to qualify for warranty or exchange services provided by TANITA.