Medela BabyWeigh - Scale Manual

Important Safeguards

When using electrical products, especially when children are present, basic safety precautions should always be followed.

Please read all instructions before using this product.
Keep these instructions for future reference.

Warnings identify all instructions that are important for safety. Failure to observe these instructions can lead to personal injury or damage to the product. The following symbols and signal words show the significance of the warnings:

Can lead to serious injury or death.

Can lead to minor injury.

NOTICE
Can lead to material damage (not related to personal injury).

Useful or important information that is not related to safety.

1. To reduce the risk of electric shock or product damage, never insert or remove the AC adapter with wet hands.
2. Do not under any circumstances dismantle or alter the device, as this could result in electric shock or injury as well as adversely affect the precision of measurements.
3. To prevent fire hazard, use only a correctly wired (120V AC) outlet, and do not use a multiple outlet extension cable.
4. Always take the utmost care when placing a baby in the baby tray. Ensure that there is no risk of the equipment tipping over.
5. Ensure the baby is lying down in the tray with minimal movement. Excessive movement could result in a fall, potentially causing serious injury.
6. The baby tray is not designed to accommodate individuals weighing more than 20 kg (44 lbs).
7. Infants must not be left unattended on the baby tray.
8. Do not sit on the edge of the scale, jump on it, or bounce on the baby basket, as any resultant fall or slip may cause serious injury.

1. When connecting the BabyWeigh^™ II to a computer, ensure that the computer conforms to IEC60950.
2. To help prevent the spread of infections, always clean the equipment in-between different patient use. Clean the tray and the housing as required with Cavicide^® or commercially available disinfectant.
3. Ensure the equipment is placed on a level and stable surface. If the equipment is used when the scale is unstable because not all feet are on the surface, there may be a risk of stumbling or inaccurate measurement.
4. Only use the adapter supplied with this equipment (PN 9207053 /101034772). Do not insert or remove the plug by the cable.
5. When changing batteries, ensure that the new batteries are inserted with the correct polarity, + and -. If the polarity is incorrect, then the batteries may leak and damage the equipment.
6. When carrying the equipment, unplug the AC adapter from the wall and hold the main body firmly, using handles provided.
7. To avoid any risk of injury or malfunction, keep your fingers and other objects away from the space between the inner-plate and the scale.
8. Never jump on the scale, there may be a risk of stumbling and malfunction of the equipment.

NOTICE
This is a precision manufactured and accurately calibrated product. Please observe the following instructions.

1. Do not dismantle the scale housing. The baby tray may be removed by following the instructions in "Baby Tray Attachment & Removal" section.
2. When not in use for a long time, unplug the AC adapter from the wall socket.
3. Remove the batteries before storing the equipment for long periods of time.
4. Do not wipe the equipment with corrosive chemicals (benzine, cleaner, etc.). Use a neutral detergent to clean the equipment. Do not spill water or chemical liquid on or in the unit. The baby tray should be cleaned using Cavicide^® or commercially available disinfectant. Do not wash any part of the scale other than the basket with water.
5. Avoid subjecting the equipment to excessive shocks or vibrations.
6. If an unauthorized person attempts to disassemble or repair any part of the unit, the warranty will become invalid. If the unit malfunctions, please consult your Medela sales consultant or customer service toll-free at 1-800-435-8316.

Please observe the following instructions for accurate measurement.

1. Measurement may not be possible on a surface that is strongly vibrating. In such cases transfer the equipment to a stable surface with little or no vibration.
2. If the scale is moved, and the new location has a temperature difference of more than 20°C (36°F) please allow at least 2 hours before using.
3. While taking measurements, do not use mobile phones, microwave therapy equipment or other types of transmitters near the scale as they may cause interference and margin errors.
4. Avoid scale placement near heating/cooling vents, heating appliances, areas of high airflow or direct sunlight.
5. When disposing of this unit, please do so in accordance with local standards for industrial waste.

SAVE THESE INSTRUCTIONS

Accurately measuring infant milk intake during breastfeeding is important in the management of hospitalized infants, as well as in addressing breastfeeding concerns with healthy infants at home.

In the hospital, knowledge of milk intake improves clinical diagnosis of feeding problems while providing essential information for precise supplementation of infants at risk for under or over consumption^1,2,3. In the home, knowledge of milk intake ensures feeding adequacy and enhances maternal satisfaction^4,5.

Clinical indices of milk intake during breastfeeding, such as duration of sucking, audible swallowing, and presence of maternal milk ejection, are not accurate replacements for the evidence based practice of test weighing before and after feeding. Using test weights may also increase maternal satisfaction when compared to using clinical indices to ensure adequate feeding⁵.

Use and Storage Conditions

Usage Conditions

Temperature Range for Use:
+5 ºC to +35 ºC
(+41 ºF to +95 ºF)

Relative Humidity: 30% - 80% (non-condensing)

Storage Conditions

Temperature Range of Environment:
-10 ºC to +50 ºC
(+14 ºF to +122 ºF)

Range of Relative Humidity: 1 0% - 90% (non-condensing)

To avoid malfunctions, avoid storing the equipment where there is direct sunlight, significant temperature changes, the risk of dampness, a large amount of dust, in the vicinity of fires, or where there is the risk of receiving vibrations or shocks. When in storage do not put anything on the tray.

Power Requirements

AC Adapter

Model	BWII
Input Voltage	100 – 240 VAC 50-60 Hz/200 mA
Output Voltage	9 VDC ± 0.45 VDC
Rated Current	800 mA
Consumption Current	38 mA
Power Consumption	0.35 W max

Batteries

Model	Batteries (AA x 4)
Consumption Current	20 mA
Power Consumption	0.12 W max

Explanation of Terminology

• Capacity (Maximum Capacity): This shows the maximum weight that can be measured by the scale.
• Increment (Minimum Graduation): This shows the interval of the numeric value change on the digital display.
• Tare: The towel, blanket, etc., used when measuring the infant weight is called "tare". Measuring the infant weight after subtracting the weight of the blanket is called "tare weighing."
• Pre-feed: Before feed or prior to feed.
• Post-feed: After feed or following feed.

Baby Tray Attachment & Removal

Attachment

The baby tray is not attached to the main unit when unpacked.

1. Pull the lever out.
   
2. Align the far edge of the tray with the stickered line.
   

3. Slide the tray over the platform until it stops and you hear a "click."
   
   
4. Make sure the tray is firmly secured and then fix it to the platform by pushing in the lever until you hear a "click.".
   
   

Removal

The baby tray can be removed and washed.

1. Pull out the lever
   
2. While gently pushing down the lever, slide out the tray in the displayed direction.
   
3. Remove the tray once its far edge is aligned with the stickered line.
   

• Once the tray is removed, take care not to insert a finger or drop anything into the exposed opening.

Part Identification

Operator Interface

Display panel

• The pointers ( the mark ) indicate active items.
• The backlight is on only when the AC adapter is used.

Display panel descriptions:

Stabilized	The weight measurement has settled.
Net	A tare weight is subtracted from current weight.
Lock	Holding the stabilized weight.
Before feed	Before feed weight displayed.
After feed	After feed weight displayed.
Amount fed	Weight of amount fed displayed.

Operation keys

* In gram only version (PN 0407023) of scale this button is disabled.

Operation key functions

tare/zero	Tare/zero	Sets the tare weight to zero.
off	Off	Turns off the scale.
weight lock off	Weight lock off	Turns off weight lock mode until weight is removed from scale. Weight lock automatically turns on again when scale displays zero.
reweigh fed baby	Reweigh fed baby	Redo post-feed weight. Clears post feed weight and amount fed allowing entry of new post feed weight and milk intake calculation.
units g / lb. oz	Units g/lb-oz	Switches between grams and pounds ounces. *In gram only version (PN 0407023) of scale this button is disabled.
	Reset	Turns on scale. Releases weight lock and sets display to zero (Stored weights remain in memory).
	Before feed	Stores before feed weight in memory 1. Displays before-feed weight once it has been stored.
	After feed	Stores after feed weight in memory 2. Displays after-feed weight once it has been stored.
	Amount fed	Stores amount fed weight in memory 3. Displays the calculated feed amount once the post-feed weight has been stored.

Symbols and their meaning

	Type B (applied part)
	Class II Equipment
	Direct Current
	Output
	Refer to the attached Important Safeguards.

Scale Setup

Power supply/battery

1. Turn the scale upside-down, and turn the finger screw on the battery cover counterclockwise (as indicated) to release the screw.
   
2. Lift off the battery cover.
   

• When the batteries start to run low, "Lo" appears on display panel as a warning. All (4 AA) batteries should be immediately replaced with new ones.

Rechargeable batteries are NOT recommended.

• A set of standard batteries should last about one year (assuming four readings a day).

Using the AC adapter

Content appearance may vary from pictures.

1. Insert the AC adapter jack into the AC adapter inlet on the right side of the main unit.
2. Plug the AC adapter into the power outlet.

• This equipment must be used with the included AC adapter or 4 AA batteries.

How to set up

Use the scale on a firm, flat and stable location.

• Do not position scale anywhere that is subject to direct sunlight, near heating equipment, or directly in the path of an air conditioner outlet, or other source of high airflow.
• Do not use scale anywhere that is subject to significant temperature change.
• Do not position scale anywhere that is either damp or subject to high humidity.
• After positioning the scale and before use, pick up the baby tray from both sides to confirm that the tray is secure, and not easily removed.
• Ensure that the tray locking lever is pushed in.

Level gauge check

1. Place the scale on a flat surface to ensure accurate measurement.
   
   Level gauge - view from above
   
2. Turn the four adjusters such that the air bubble in the level guide is positioned in the center of the circle. Confirm that all four adjusters are in contact with the surface.
   

Instructions for Weighing

Considerations to follow prior to test-weighing

• Diaper should not be changed between the "before" and "after" weights.
• Baby should wear the same clothing for "before" and "after" weights.
• Use a bib, but do NOT include it in "before" and "after" weights.
• To improve accuracy, bundle active infants and verify that all blankets, clothing, and extremities are inside the basket and not touching the side of the scale.
• Record weights in grams only.*

* Grams is closely equivalent to milliliters (mL) or cubic centimeters (cc). Meier PP, et al. A New Scale for in-Home Test-Weighing for Mothers of Preterm and High Risk Infants. Journal of Human Lactation, 1994;10(3); 163-168.

BabyWeigh™ II Operation Overview

Once you have setup the scale ("Scale Setup" section) operation is easy. Here is an overview.

1. Perform before-feed weight.
   The store weight in memory press the button
2. Perform after-feed weigh.
   The store weight in memory press the button
3. Calculate amount fed.
   To calculate press button.

Setup

1. Attach the tray and level the scale prior to weighing.
2. Press the button and wait until a '0' appears in the display. If using a blanket or pad on the scale, press button to zero out the excess weight. Net will be indicated.

Before-feed Weight (pre-weight)

1. Place baby on the scale, holding one hand just above baby. Wait until the display indicates lock (Beep sound). The value that appears is the pre-weight.
   
2. Press the button to store the pre-weight.
3. Remove baby from the scale, place baby in a safe location and then record pre-weight.

Feed baby. Leave scale on during feeding.

After-feed Weight (post-weight)

• Ensure the display has reset to '0'. If it has not, press the button to zero out the display.

1. If the scale has powered off, press the button and wait until a '0' appears in the display. The pre-weight is saved in memory, even if the scale is powered off.
   
2. Place baby on the scale, holding one hand just above baby. Wait until the display indicates lock (Beep sound). The value that appears is the postweight.
3. Press the button to store the post-weight.
4. Remove the baby from the scale and place baby in a safe location.
   
5. Press button to display the calculated breast milk intake. Press buttons or to recall the pre-weight or post-weight respectively.
6. Record the post-weight and the calculated amount fed.
7. Press the button to turn off the scale. The last set of weights will remain in memory.

Additional Considerations

• Press the button at any time to reset the scale. This will not delete weights in memory.
• If it should become necessary to reweigh the after-feed reweigh weight after it has been saved, press the button.
  The button clears the current post-weight on the memory button to prepare the scale for a new post-weight.

Considerations for weighing infant with Leads

• If possible, disconnect leads and or tubings from monitor and place on top of bundled infant.
  
• Suspend monitoring/alarm during test weight procedure.
• Prior to feeding the baby reconnect leads if disconnected.

Accurate test weights for preterm infants with leads attached can be achieved by properly training NICU personnel and following an evidence based protocol. Refer to the following publication for more information:

Haase B, Barreira J, Murphy PK, Mueller M, Rhodes J. The development of an accurate test weighing technique for preterm and high-risk hospitalized infants. Breastfeed Med. 2009 Sep; 4(3):151-6.

Calibration Procedure

• This procedure should be performed in the same geographic area as the measurements for infant weights.
  Procedure requires two certified 10 kg Class F test weights.

1. Press button while the scale is off.
2. Press button while the display is flashing all segments --> Display shows "Func 1".
   
3. Press button --> Display shows "Func 2".
   
4. Press button --> Display shows "9.XXX" (For example, 9.802 will be displayed).
   
   
   • The gravity setting will update automatically upon completing the calibration procedure.
5. Press button again --> Display shows "20 0--" and "g". Wait for display to show "20 2--".
   
6. Place two 10 kg weights on the platform after the display shows "20 2--".
   
7. Wait for the display to show "stabilized" mark (circle in the top of left corner), then Press the button to complete calibration.
   
8. Wait for display to show "func 1" then remove the 20 kg weight.
   
9. Press button to turn off the scale.

• If the following error messages are displayed, "Er0065" or "Er0066", re-calibration must be performed.

• Do not leave the calibration weights on the scale for prolonged periods of time (more than a few minutes).

Scale Settings Adjustment

To adjust settings for Display Hold Time and Auto Power Off Time complete the following steps:

Display Hold Time

Enter the setting menu by pressing the key. (Beep sound)

Press button while the screen is flashing (Beep sound). The LCD screen will show SEt.

Depending on which setting you wish to adjust follow next steps under instructions for each setting.

The "Display Hold Time" setting holds the display for a specified length of time. This setting determines how long the weight displays after the baby has been removed from the scale. It also controls the length of time the weight is displayed when recalling pre-feed, post-feed and amount fed values.

1. Press key. (Beep sound)
   The hold time is shown (the default is 10 seconds), and the value is changed by pressing this key.
   * The hold times that can be set are 5 seconds, 10 seconds, 20 seconds or 30 seconds.
2. To save the hold time setting,
   Press again. (Beep sound)
   

Auto Power Off Time

The "Auto Power Off Time" setting automatically turns off the power when the scale is unused for the specified length of time. To enter the settings menu.

1. Press key. (Beep sound)
   The auto power off time is shown (the default is none), and changed by pressing this key.
   * The auto power off times that can be set are 15 minutes, 30 minutes, 45 minutes, 60 minutes, or -- (None). --(None) means that the auto power off function is deactivated.
   
2. To save the Auto Power Off Time setting, Press again. (Beep sound)
   

Troubleshooting

If you are concerned that the scale may not be functioning correctly please check the following points before requesting repairs.

Problem	Check Points
Scale will not 'Power On.'	Have the batteries been removed, or has the AC adapter been unplugged? Are the batteries running low? Is anything stuck to the terminals of the batteries?
'Lo' is displayed.	The batteries are running out. Please replace them immediately or use the AC adapter.
------------- is shown during measurement.	The maximum measurable weight capacity for the scale is 20 kg and has been exceeded.

BWII Data Output Format

Explanation for RS-232C-compliant output.

Specifications

Communication standard	EIA RS-232C
Communication method	Asynchronous
Signal speed	9,600bps
Data bit length	8bit
Parity	None
Stop bit	1bit
Terminator	CR + LF
Flow control	None

NOTE 1 Commas (,) are used to separate data.

NOTE 2 Terminator (end of data) is CR (ASCII code: 0DH), LF (ASCII code: 0AH).

Signal line name and connection method

Terminal no.	Signal name
1
2	TXD
3
4
5	GND
6
7
8
9

Connection example

Please be sure to use a straight cable when the equipment is connected to an external computer.

Transmission data is output immediately after measurement regardless of the receiving device status. The receiving device must always be ready to receive data before any measurements are taken.

Grams (g) mode

When the display locks on a weight.

Item	Header	Output data (ASCII code)	Details
Control data	{0	Fixed at 16
Control data	~0	Fixed at 1
Model No.	MO	"xxxxxx"	6 byte fixed length ("BWII")
Body weight	Wg	xxxxx	3~5 bytes variable length (unit: g)

Ex.) {0,16,~0,1,MO,"BWII",Wg, 5260

When the Before Feed key is pressed to store weight.

Item	Header	Output data (ASCII code)	Details
Before Feeding	Rg	xxxxx	3~5 bytes variable length (unit: g)

Ex.) Rg, 5260

When the After Feeding key is pressed to store weight.

Item	Header	Output data (ASCII code)	Details
Before Feeding	Rg	xxxxx	3~5 bytes variable length (unit: g)
After Feeding	Pg	xxxxx	3~5 bytes variable length (unit: g)
Amount Fed	Gg	xxxxxx	1~6 bytes variable length (unit: g)

Ex.) Rg, 5260,Pg, 5366,Gg, 106

lb-oz mode

When the display locks on a weight.

Item	Header	Output data (ASCII code)	Details
Control data	{0	Fixed at 16
Control data	~0	Fixed at 1
Model No.	MO	"xxxxxx"	6 byte fixed length ("BWII")
Body weight	Wo	xx.xx.x	5~7 bytes variable length (unit: lb.oz)

Ex.) {0,16,~0,1,MO,"BWII",Wo, 11.14.2

When the Before Feeding key is pressed to store weight.

Item	Header	Output data (ASCII code)	Details
Before Feeding	Ro	xx.xx.x	5~7 bytes variable length (unit: lb.oz)

Ex.) Ro, 11.14.2

When the After Feeding key is pressed to store weight.

Item	Header	Output data (ASCII code)	Details
Before Feeding	Ro	xx.xx.x	5~7 bytes variable length (unit: lb.oz)
After Feeding	Po	xx.xx.x	5~7 bytes variable length (unit: lb.oz)
Amount Fed	Go	xxx.xx.x	5~8 bytes variable length (unit: lb.oz)

Ex.) Ro, 11.14.2, Po, 12.2.1, Go, 0.3.9

NOTE 1 Commas (,) are used to separate data.

NOTE 2 Terminator (end of data) is CR (ASCII code: 0DH), LF (ASCII code: 0AH).

Replacement Parts

Parts

Item	Part No.
Power Adapter	9207053/101034772
Baby Tray Assembly	8097012/101033916
Battery Cover	8107232/101035675
Adjusting Foot	101035674
Instruction Manual (PDF Only)	1908156/101030228

Accessories (not included)

Item	Part No.
Soft Case	3007357/101029343

Technical Specifications

Model	BabyWeigh™ II
Protection against electrical shock	On AC adapter: Class II
	On battery: Internally powered equipment
Capacity	44 lb (20000 g)
D (division)	0.1 oz (0-44 lb) 2 g (0-20000 g) (2 gram accuracy)
Display panel	Backlit LCD (Backlight is on only when the AC adapter is used)
External Interface	RS-232C (D-sub 9-pin female connector), unidirectional output
Regular voltage	DC 6 V (using the batteries) DC 9 V (using the AC adapter)
Power consumption	0.12 W or less (using the batteries) 0.35 W or less (using the AC adapter)
Consumption current	20 mA (using the batteries) 38 mA (using the AC adapter)
Operating temperature	41 ºF to 95 ºF (5 ºC to 35 ºC)
Storage temperature	14 ºF to 122 ºF (-10 ºC to 50 ºC)
Overall dimensions	D16.1xW23.6xH6.2in (D409xW600xH157mm)
Main unit mass	Approx. 10.1 lb (4.6 kg)
Main material	ABS resin
Made in	Japan

This product meets the following requirements.
Safety Standard: IEC60601-1:1988,+A1:1991+A2:1995
EMC Standard: IEC60601-1-2:2001,+A1:2004

Documents / Resources

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