Global 244280 User manual

Electronic Counting Scale
Model 244280
USER MANUAL
Please read entire manual carefully prior to operation. For additional questions
or concerns, contact Global Industrial Customer Service at 1-800-645-2986 or
visit www.globalindustrial.com. Keep this manual for future use.

CONTENTS
1. INTRODUCTION...........................................................................................................1
General and Safety Information.................................................................................................................. 1
Specifications.................................................................................................................................................. 1
2. Unpacking and Setup..................................................................................................2
Contents............................................................................................................................................................ 2
3. OVERVIEW OF CONTROLS AND FUNCTIONS..........................................................3
3.1 Front Display............................................................................................................................................. 3
3.2 Indicator Display Character Definitions............................................................................................. 4
3.3 Key Functions........................................................................................................................................... 5
4. OPERATIONS...............................................................................................................6
4.1 Power on / Power off scale.................................................................................................................... 6
4.2 Zeroing the display.................................................................................................................................. 6
4.3 Taring........................................................................................................................................................... 6
4.4 Changing the unit of measure .............................................................................................................. 7
4.5 Normal Weighing Mode .......................................................................................................................... 7
4.6 Checking Weighing Mode...................................................................................................................... 7
4.7 Counting Mode.......................................................................................................................................... 8
4.8 Percent Weighing Mode ......................................................................................................................... 8
4.9 Manual Accumulation.............................................................................................................................. 9
4.10 Automatic Accumulation.................................................................................................................... 10
4.11 Print (output) data via RS232 interface .......................................................................................... 10
5. Calibration..................................................................................................................11
6. Parameter Setup Mode..............................................................................................12
7. Display A/D code and working voltage....................................................................13
8. Display symbol meaning ..........................................................................................13
9. Troubleshooting ........................................................................................................13
9.1 Battery and Charging............................................................................................................................ 13
9.2 Troubleshooting ..................................................................................................................................... 14

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1. INTRODUCTION
General and Safety Information
For use in dry environments only.
This product uses a NI-MH battery. Dispose of according to local laws and
regulations.
Read and understand all operating instructions before using this product. Keep
this manual for future reference.
Allow sufficient warm up time. Turn the scale on and allow up to 10 minutes for internal
components to stabilize before weighing.
Record the weight shortly after placing a load on the platter. Leaving loads in place for
extended periods may vary the load cell’s output signature and may result in a less
accurate reading.
Avoid extended exposure to extreme heat or cold. Optimum operation is at normal room
temperature. See operating temperature range in the specifications table. Allow the scale
to acclimate to room temperature before using.
When storing the scale for extended periods, the battery must be charged every 90 days
to avoid premature performance degradation. Over time, the operating time per charge
will degrade. If the operating time is no longer acceptable even after recharging, the
battery must be replaced. Contact Global Industrial for additional information.
Electronic scales are precision instruments. Do not operate near cell phones, radios,
computers or other electronic devices that emit radio frequencies that may cause
unstable readings.
Specifications
Model
244280
Max. Capacity
60 lb (30 kg)
Readability
0.002 lb (1 g)
Display Resolution
1:30000
Min. Recommended
Weight
0.04 lb (20 g)
Min. sample Weight
1%FS
300g
Construction
Stainless steel pan, plastic housing
Weighing Units
kg / lb
Calibration unit
kg / lb
Modes
Weighing, Counting, Check Weighing, % weighing, Accumulation
Weight Display
1-Window backlit LCD display, 1 inch high, 6 1/2 digits, 7-segment
Zero Range
Power-on zero range: calibration zero point±10%FS;
ZERO key range: power-on zero±5%FS
Tare Range
Full capacity
Stabilization Time
<5 seconds
Operating
Temperature
32°to 105°F (0°to 40°C)

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Humidity Range
<90% relative humidity, non-condensing
Power Supply
Lead-acid rechargeable battery or AC power adapter
(12Vdc/500mA with central positive)
External Interface
RS232
Safe Overload
Capacity
150% of capacity
Platter Dimensions (L
x W)
11.4” x 8.7” (290 x 220 mm)
Scale Dimensions(L x
W x H)
13.5” x 11.6” x 4.5” (294 x 342 x 115 mm)
2. Unpacking and Setup
Remove the scale from the box and place it on a firm, level surface. Avoid locations with
rapid temperature changes, excessive dust, moisture, air currents, vibrations,
electromagnetic fields, heat or direct sunlight.
Adjust the leveling feet until the bubble is centered in the circle of the
level indicator (located on the front panel).
NOTE: Ensure that the scale is level each time its location is
changed.
The internal rechargeable battery should be fully charged for up to 12 hours before using
the scale for the first time.
Connect the supplied AC adapter to the power input receptacle underneath the scale.
Plug the AC adapter into a properly grounded power outlet. The battery will begin
charging.
If the scale will be stored or transported in the future, save the packaging material to
ensure the best possible protection for the scale.
Contents
Scale
12V 500mAAC adapter, UL
User Manual

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3. OVERVIEW OF CONTROLS AND FUNCTIONS
3.1 Front Display
- Scale is zeroed, gross weight is 0, tare is 0.
- Scale is stable.
NET - Display reading is net weight; tare is not 0.
Total - Display data is accumulated total times, weight, pieces, or percentage.
lb - Measure unit is lb or lb:oz
oz - Measure unit is oz or lb:oz
kg - Measure unit is kg
g- Measure unit is g
% - Measure unit is % (in percentage weighing mode).
Pcs - Measure unit is pieces (in counting mode).
HI - Check-weighing is enabled. Current data is above the specified upper limit.
OK - Check-weighing is enabled. Current data is between the specified upper and lower
limits.
LO - Check-weighing is enabled. Current data is below the specified lower limits.
- Battery level.

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3.2 Indicator Display Character Definitions

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3.3 Key Functions
~
Press to enter number in counting and checking weighing modes
and calibration
Press to clear the input number or accumulated value
Press to tare the weight when reading is stable, tare range:
100%FS
Press to confirm the operation or entered data
Press to set the zero point after the scale is stable, zero range：
power-on zero point±5%FS
Press to add the value to the accumulation memory
Press and hold to display the accumulated total value
Press to switch the measuring unit between kg, g, lb and oz
Press to output data via RS232 port
Press to enter check weighing mode, set Hi and Lo value
Press to enter % weighing mode
In counting mode, press to display unit weight(g/pcs), total
weight(kg) or count(pcs)
Press to enter into counting mode
Press to exit the current working mode and return to normal
weighing mode

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Press to power on the scale when the scale is off
Press and hold to power off the scale when the scale is on
Press to return normal weighing mode when scale is in parameter
setting mode
+
Press to enter calibration mode
+
Press to enter LCD and Key test mode
+
Press to enter parameter setting mode
+
Press to check inner code and voltage
4. OPERATIONS
4.1 Power on / Power off scale
Place the scale on a flat, stable surface. Level the scale using the leveling bubble at the
lower left side of the display.
With the weighing platter empty, turn on power switch (located underneath on the left-hand
side of the scale). Press the ESC/ON/OFF key to power on the scale. The self-check will run
and the scale will display a zero reading.
When the scale is beyond the power-on zero point range (calibration zero point +/- 10%FS),
after powering on, the scale displays “Err04”or“Err05”.
To power off the scale, press and hold ESC/ON/OFF key.
4.2 Zeroing the display
You can press the ZERO key at any time to set the zero point from which all other weighing
and counting is measured, within + 5% of power up zero. This will usually only be necessary
when the platform is empty. When the zero point is
obtained the display will show the indicator for zero.
4.3 Taring
Zero the scale by pressing the ZERO key if necessary when reading is stable. The zero
indicator willbe on.
Place a container on the platform, a value for its weight will be displayed.

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Press the TARE key to tare the scale. The weight that was displayed is stored as the tare
value and that value is subtracted from the display, leaving zero on the play. The "NET"
indicator will be on. As product is added only the weight of the product will be shown. The
scale could be tared a second time if another type of product was to be added to the first one.
Again only the weight that is added after taring will be displayed.
When the container is removed a negative value will be shown. If the scale was tared just
before removing the container this value is the gross weight of the container plus all product
that was removed. The zero indicator will also be on because the platform is back to the
same condition it was when the ZERO key was last pressed.
4.4 Changing the unit of measure
In normal weighing mode, press Unit key to change the unit of measure between kg, g, lb
and oz.
4.5 Normal Weighing Mode
When scale is powered on and back to 0, first tare the empty container then place the
sample in the container. The display will show the weight and the units of weight currently in
use.
4.6 Checking Weighing Mode
Check-weighing is a procedure to cause an alarm to sound when the weight, quantity or %
weight on the scale meets or exceeds values stored in memory. The memory holds values
for a high limit and a low limit. Either limit can be used or both can be used.
Press the LIMIT key. The display will show “COMP”, then show “UNIT.KG”, now you can
use Unit key to choose the measuring units you need. Press Tare key to confirm.
The display will show “High” then display 0, user 0-9 keys to input the value, press the
TARE key to confirm. If you want to reset the value to zero press the Ckey to clear the
value.
After pressing the TARE key the display will then show “Low”. Enter the low limit in the
same way the high limit was entered.
After pressing the TARE key the scale will return to weighing with the Checkweighing
function enabled.
When a weight is placed on the scale the HI/OK/LO symbol will be shown if the weight is
above or below the limits and the beeper function will sound as described below.
BOTH LIMITS SET
The display will show OK and the beeper function will sound when the weight is between the
limits.