operation and maintenance
BIA 450 support
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operating your analyzer

Switching the Analyzer On
The MASTER POWER switch is located at the back of the analyzer and must be set to the ON position (indicated by a "-" on the switch) in order to operate the analyzer. Press the ON key; the analyzer performs a self-test and displays the charge remaining in the battery. When the self-test is complete the analyzer will prompt you to continue. If a key is not pressed within ten minutes the analyzer automatically turns itself off. This conserves battery power.

When the MASTER POWER switch is off battery usage is minimized. This setting is recommended when storing the analyzer. This setting is also recommended when traveling to ensure the analyzer will not be turned on accidentally. The off position is indicated by an "o" on the switch.

Checking the Battery Level
After the self-test the battery level will be displayed. A full charge will last for over 100 tests and printouts. If the battery is low you should recharge the analyzer. When the battery charge is low asterisks (*) flash in the middle of the screen. If you see this symbol the battery will have enough charge for about 10 tests and printouts. For more information, see charging your analyzer.

To monitor the battery charge level during operation press the SYS key on the analyzer's keypad. Press the SYS key repeatedly until you see the battery screen which displays the battery charge level.

Checking the Print Roll
The print roll will last about 100 printouts. Check the print roll by opening the paper roll access door or by pressing the FEED key on the analyzer's keypad. If a red stripe appears on the edge of the paper the paper is nearly depleted so be prepared to change the print roll. For more information see loading paper.

Note that when the analyzer is first turned on the DATA or TEST key must be pressed before the PRINT and FEED keys can activate the printer. This feature prevents the printer from turning on accidentally while the analyzer is in its carrying case.

Setting Units of Measurement
The analyzer can display units of measurement in either English or metric units. If you want to change the units of measurement press the SYS key. The display changes to the units screen. To change units from English to metric or vice-versa press the ENTER key. Press any other key to continue.   

Setting the Date and Time
Before the analyzer is shipped from the factory the time and date are preset to Pacific Time. To reset the time and date to your local time press the SYS key until you see the date screen. Type in the date in numeric form and press ENTER after each entry. For example, type 11, ENTER, 17, ENTER, 16, ENTER for November 17, 2016.

Type in the time in a 24-hour format. For example, type 15, ENTER, 35, ENTER for 3:35 pm. Press the ENTER key after the hour and after the minute entry. You can change the time when daylight savings time occurs or when the unit is moved to another time zone. You may need to reset the time occasionally as the electronic clock may gain or lose a few minutes each month.

Selecting an International Language
If you purchased the international version of the analyzer you can specify the language the analyzer uses for its screens and printouts. To choose a language press the SYS key until the language screen is displayed.

The > will point to the current language selected. To select another language press the ENTER key until the > points to the language you wish to use for displaying screens and printing reports. Press any other key to continue.

Entering Patient Data
Entering patient data is optional and does not affect the measurement of phase, resistance, and reactance. Patient data is, however, used to calculate mass distribution and water compartments. If age, height, or weight is not entered these results are not calculated and are not printed. In this case a shorter version of the analyzer report is printed.

To enter patient data press the DATA key on the analyzer keypad to access the patient data screen.

Press the ./MF key to indicate the gender of the patient. The ./MF key acts as a toggle switch between male and female.

Press the ENTER key to advance to the age field. Use the numeric keys to enter the patient's age in years.

Press the ENTER key to advance to the height field. Use the numeric keys to enter the patient's height in inches or centimeters.

Press the ENTER key to advance to the weight field. Use the numeric keys to enter the patient's weight in pounds or kilograms.

To return to the SEX field, press the ENTER key.

While entering patient data you have the option of specifying a patient's exercise activity. This feature is used to optimize test results for athletic subjects. To access this feature press the DATA key again. You will see the exercise screen. Enter the number of hours the subject exercises each week. An hour of exercise is defined as one hour of at least semicontinuous exercise. It does not mean one hour at the club, gym, or track. When you use this feature the analyzer will factor the exercise level of the subject into the test results. See calculations. If you do not use this feature the analyzer will use its normal equations for calculating mass distribution and water compartments.

Running a Test
Press the TEST key. To measure the patient press the TEST key again. The analyzer will measure the patient and calculate test results. After that, to print a report, press the PRINT key.

Or, you can press ENTER to input resistance (R) and reactance (X) values and use the analyzer to recalculate results. This is useful if you have made an error entering the patient data but realize this after you have disconnected the patient from the analyzer. You can use this feature to correct the patient data, reenter the resistance and reactance values from the previous measurement and recalculate the results, without reconnecting the patient.

Reviewing Test Results
Use this feature to review test results prior to printing a report. After a test is run the analyzer will display the phase angle and body capacitance. Press the PHASE key to review the other impedance components - resistance and reactance. Press the PHASE key repeatedly to toggle back and forth between the two screens.

Press the MASS key to review mass distribution. The first time you press the MASS key the analyzer will display fat-free mass and fat mass. Press the MASS key again and the analyzer will display body cell mass and extracellular mass. Press the key repeatedly to toggle back and forth between the two screens.

To review water compartments press the WATER key. The first time you will see total body water in liters and total body water as a percentage of fat-free mass. Press the WATER key again to display intracellular water and extracellular water. Press the key repeatedly to toggle back and forth between the two screens.

Keypad Summary

0-9   Numeric keys; for entering numeric data.
./MF   Changes the sex field within the patient data screen. Acts as a toggle between male and female. Also sets the decimal point when entering numeric data.
ENTER   Advances the cursor to the next data-entry field.
DATA   Displays the screen for entering patient data which includes gender, age, height, and weight.
TEST   Runs the bioimpedance analysis test.
PRINT   Prints the summary report of test results.
FEED   Causes the printer to advance one line.
PHASE   Displays the patient's phase angle, body capacitance, resistance, and reactance.
MASS   Displays the patient's fat-free mass (FFM), fat mass (FM), body cell mass (BCM), extracellular mass (ECM), and the ratio ECM/BCM.
WATER   Displays the patient's total body water (TBW), intracellular water (ICW), and extracellular water (ECW).
BMI   Displays the patient's body mass index (BMI).
BMR   Displays the patient's basal metabolic rate (BMR).
SYS   Displays the system status of the analyzer for reviewing and modifying the analyzer's configuration settings.
CLEAR   Clears the current data-entry field.
ON   Turns the analyzer on and off.
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