8
several seconds until the display and annunciators
turn off. Turning the scale off manually when patient
weighing is completed will help to conserve battery
life.
A “LOW-BATTERY” annunciator is provided on the
front panel to warn the operator when the batteries
are becoming depleted. This will begin to flash when
the batteries are becoming weak. The scale will still
perform several weighings at this point but battery
replacement will soon be necessary. If the batteries
become depleted to the point of not being able to
operate the scale properly, the weight display will
show “bAttrY” and the scale will not function. Scale
accuracy will not be compromised.
3.11 AC LINE POWER OPERATION
Once plugged in, the scale will operate on the line
power from the external power adapter. Pressing
“ON / (OFF) / ZERO” will turn the scale “on” and
automatically cause it to operate from AC line power.
Internal circuitry provides for this automatic
switchover from batteries to line power. Note that the
scale is “on” and AC line power is removed (such as
unplugging or a power interruption), the scale will
immediately switch to the battery to maintain scale
operation, eventually timing out and shutting off after
a period of non-use to conserve battery energy.
NOTE: Those of you familiar with the earlier version
of the SCALE-TRONIX® model 4800 Pediatric
Scale will note the absence of the “LINE POWER
OPERATION” toggle switch located on the right side
of the enclosure. This has been eliminated in the
interest of simplicity and durability. The scale can be
turned “on” or “off” by use of the “ON / (OFF) / ZERO”
pushbutton as described in section 3.01. The scale is
normally programmed to run continuously when
operating on AC line power.
3.20 AUDIBLE BEEPS
An audible beeper is provided to assist the operator in
the weighing process. This is a useful feature and
indicates the scale’s activity as follows:
One beep: Acknowledgment of a pushbutton
press.
Two beeps: “Zero” weight has been obtained.
Three beeps: Weight reading is obtained and
displayed.
Beeps occur during some malfunctions, including the
following:
Four long beeps: Battery is too weak to operate
scale.
Long/short beeps: Problem with scale. See section
4.60.
Continuous long beep: Problem with scale. See
section 4.60.
Note that the beeper can be turned “off” if desired.
This eliminates a potential noise source for us in
“low-stimulus” environments. See section 2.40,
OPTION “SET-UP”, for more information.
3.30 DIAPER WEIGHING OPTION
A diaper weighing capability is available as an option
on the SCALE-TRONIX® model 4802 PEDIATRIC
SCALE. If your scale is equipped with this feature it
allows the scale to display weights below one (1)
kilogram with a resolution of one (1) gram, instead of
the standard resolution of five (5) grams. Accurate
measurement of urine output or other precise 1 gram
measurements is available with this attribute. This
“dual-ranging” feature requires no operator action
and switches on automatically whenever the weight
on the cradle is below the one kilogram level.
3.40 MOBILE WEIGHING CART
A mobile weighing cart is available from
SCALE-TRONIX® to complement the model 4802
PEDIATRIC SCALE and turn it into a mobile
weighing station. Constructed of stainless steel, it
matches the model 4802 in appearance and provides
the same durable, easy-to-clean construction. An
illustration of the cart with the model 4802 is shown
on page 22.
3.50 SCALE LINERS
Disposable scale liners are available to fit the cradle
on the model 4802. These disposable paper liners
help keep the cradle clean and protect against cross
contamination. They can be ordered as
SCALE-TRONIX® part number 48217.
3.60 WEIGHING PROCEDURE
The SCALE-TRONIX® model 4802 PEDIATRIC
SCALE is very simple to use. A basic procedural
sequence must be followed, however, to assure
accurate weights. The basic procedure is outlined
below. For your convenience the operating
instructions are outlined on the top surface of the
scale.
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