Gram DX Series User manual

SERIES
DX
3 / 6 / 15 / 30
USER MANUAL
EN

1

Table of Content
Instruction for Use ................................................................................................................ 1!
Preparing to Use the Scale .................................................................................................. 1!
Chapter 1 Introduction .......................................................................................................... 3!
1-1 Features and Specifications ....................................................................................... 3!
1-2 Power Supply .............................................................................................................. 4!
1-3 Display and Keypad Introduction ................................................................................ 4!
1-4 Self-Test Mode ............................................................................................................ 7!
1-5 Error Messages .......................................................................................................... 8!
1-6 Weight Unit ................................................................................................................. 8!
Chapter 2 External Function Setting .................................................................................... 9!
2-1 General Function Setting ................................................................ 10!
2-1-1 Power Saving Function Setting ......................................... 11!
2-1-2 Automatic Power-off Timer Setting .................................... 12!
2-1-3 Hi/Lo/OK Function Setting .................................................. 13!
2-1-4 Restore to the Default Setting ........................................... 14!
2-1-5 Noise Filter Setting ............................................................ 15!
2-1-6 Two Weighing Units Setting .............................................. 16!
2-1-7 Unstable Tare .................................................................... 17!
2-1-8 LED Brightness Setting .................................................... 18!
2-2 Weight Calibration ............................................................................... 19!
Appendix 1 Command Mode &Output data format ............................................................ 20!
Appendix 2 7-Segment Display Characters ....................................................................... 22!

1
Thank for your purchasing of our GRAM
Weighing Scale. To guide you to use our product
correctly, please read this Manual carefully to
extend the life of machine and to avoid error.
Instruction for Use
1. Please keep the scale in a cool dry place. Do not store it at high temperature.
2. Avoid objects impacting with the scale. Do not drop loads onto the scale or subject the
weigh pan to any strong shock loads.
3. The load placed on the weigh pan must not exceed the maximum weighing capacity of
the scale.
4. If the scale is not going to be used for some time, please clean it and store it in a plastic
bag in dry conditions. A desiccant sachet may be included to prevent any moisture
build up.
5. Please operate or charge the scale in an open area. Do not squeeze the power cord to
avoid wire on fire.
Preparing to Use the Scale
1. Adjust the four levelling feet (if fitted) to set the scale pan level using the spirit level
bubble located at the front of the scale.
2. Avoid operating the scale in direct sunlight or drafts of any kind.
3. If possible avoid connecting the scale to ac power outlet sockets which are adjacent to
other appliances to minimise the possibility of interference affecting the performance of
the scale.
4. Remove any weight that might be on the weigh pan before the scale is switched on and
avoid leaving weight on the pan for long periods of time.
5. All goods weighed should be placed in the centre of the weigh pan for accurate
weighing. The overall dimensions of the goods being weighed should not exceed the
dimension of the weigh pan.
6. We suggest to warm up the scale for 15~20 minutes before operation to ensure best
accuracy.
7. Please note when the symbol keeps flashing on the screen, the batteries need
to be replaced.
8. Introduction of Storage Battery

2
No burning
Caution Corrosion
Due to the storage battery adopt the advanced free-maintaining technique, customers
need not to replenish electrolyte.
The scale should be recharged every 3 months to prevent failure of the internal
rechargeable battery.
1. The battery should be charged for 8~10 hours.
2. The temperature of battery should below 45℃.
Maintaining
1. Please do not discharge with over-current when using the battery. Please charge the
battery after discharging current.
2. Please take down the battery when the scale is not used for a long time or break the
connection of cathode.
3. Do not short the battery terminals to check whether there is current. Please check
whether the connection point is firm to guarantee good connection.
4. The battery should be replaced by specialized person. No reverse-battery or the
product will be damaged.
a) Anode of battery should be connected with Anode of product battery（usually red
cable）
b) Cathode of battery should be connected with Cathode of product battery (usually
brown cable or black cable)
c) See the picture following
Safety warnings
1. The electrolyte of battery is caustic which causes metal, cotton, etc to corrode.
2. The hydrogen will be resolved when using or charging the battery and it will cause
explosion when approaches fire.
Brown cable(or black cable)
connected with Cathode of
battery
Red cable connected with
Anode of battery
Warning explosion
Children faraway

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Chapter 1 Introduction
1-1 Features and Specifications
Features
u Sealed waterproof silica gel strip blocks water from infiltrating into the scale.
u Surrounded by waterproof grade sheeting to ensure the water free.
u 1/3,000~1/6,000 display resolution available.
u DX adopts stainless steel housing.
u High speed of 24bits AD fast reacts and shortens the weighing operation duration.
u Selectable units: Kilogram (kg), gram (g), and pound (lb) weighing units available.
u Built-in rechargeable battery can be easily replaced.
u Vertical placement design battery prevents from electrolyte leakage, and makes more
safety and durable.
u Low power indication and auto power off.
u Well-designed protection point for transportation.
u Securable platter with screws at users' needs.
Specifications
Model
Capacity
Division
Resolution
DX-3
3kg
0.5g
1g
1/6,000
1/3,000
DX -6
6kg
1g
2g
1/6,000
1/3,000
DX -15
15kg
2g
5g
1/7,500
1/3,000
DX -30
30Kg
5g
10g
1/6,000
1/3,000
Operating Temperature: -10°C ~ 40°C (14°F ~ 104°F)
Dimensions:
240 x 120 x 280 mm (W x H x D)
Weight of the scale:
3.5 kg approximately;
4 Resolutions above 1/3,000 are only available for non-approval models.

4
1-2 Power Supply
Power Supply Selection for Standard Models
1. DC 6V / 4Ah rechargeable battery
2. AC 110V~240V (±10％) adapter
Power Supply Selection for Wireless Charging Models
1. Power Supply adapter 100V~240V(50~60Hz)
Output：＞5W (meets WPC1.12_Qi Wireless Power Supply’s)
2. DC 6V / 4Ah rechargeable battery or 3.7V/4000mAh lithium battery is used
Power Consumption for Models with lead acid battery
About 120 mA (high brightness); 60 mA (normal brightness); 41.7 mA (low brightness)
Power Consumption for Models with lithium battery
About 180 mA (high brightness); 90 mA (normal brightness); 62.6 mA (low brightness)
Low Battery Warning
Please note when the ( ) symbol keeps flashing on the display, the battery should be
recharged right away.
4 The scale will turn off automatically after 1~2 hours, when the low battery warning
symbol shows up. Then the scale must be fully charged, before operating again.
1-3 Display and Keypad Introduction
Icon Introduction
à0ß
：
Zero point indication
STABLE
：
stable indication
GROSS
：
gross weight indication
：
Low battery indication. When this symbol is flashing replace the batteries.
L1、L2
：
only for multiple-unit models; units indications
HI
：
The weight on weigh pan is greater than the high limit
LO
：
The weight on weigh pan is lower than the check value
HI
LO
L2
STABLE
GROSS
à
0
ß
L1

5
Keyboard Function
1OFF 1: power off
1ON | ZERO : This key possesses two functions: Power On and Zero function.
% When the scale is off, press the ON | ZERO key, the scale will switch on.
& When the scale is on, the ON | ZERO key has zero function.
4 When the weigh pan is empty (free of load) and the display is not showing
zero, press the ON | ZERO key to zero the scale. At zero, the “à0ß” indication
is on.
1UNITS : switching units
Press the UNITS key to switch weight units, the icons or arrows will indicate the
active units as appropriate. The units available are dependent on the exact scale
model.
4 After power off, the scale will memorize the active units. When the scale is
powered on again, it displays the previously active units.
1 NET |GROSS : switch NET or GROSS key
4 NET | GROSS key is only used in Tare mode.
In the Tare mode, the screen displays the “Net” icon,
4 In tare mode, when the GROSS icon is on, the weight value on the display is the
total amount of the tare value. When the GROSS icon is off, the weight value on
the display is the net value. press the NET | GROSS key to switch between the “Net
value” and the “Gross value”.

6
4 At the Gross status, only OFF and NET | GROSS keys are functional.
1TARE : tare / pre-tare key
The tare function will not operate during the following conditions:
When the scale powers on, the weight is still below zero after a container is placed
on the weigh pan. Or the tare value is over the full scale capacity.
Tare function
(1) Put a container on the weigh pan and after the weight is stable, press the TARE1
key to zero the weight of the container. The screen displays the “à0ß” “STABLE”
icon.
(2) Put the goods in the container, the screen displays the net weight value of the
goods.
(3) Remove the full container; the screen displays the negative weight value of the
container. At this time pressing the TARE key again will cancel the tare and the
scale reverts back to zero. The screen displays the “à0ß” “STABLE” icon.
4 The tare function can be operated continually to the full weighing capacity of the
scale.
4 Continual tare operation is adding or removing tare objects on weigh pan and
pressing the TARE key each time.
Power Saving Mode
To enable the power saving mode, please go to FnC 01 and set as “on”.
When the scale is idle at zero without any key being pressed for 10 seconds, it will enter
power saving mode. Only one “-“ segment will be the display, and “-“ will scrolling from left
to right. To exit power saving mode, place weight over 10d or press any key.

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Press key
Press key
Press key
Press key
1-4 Self-Test Mode
4 Set the switch SWA1 on the bottom of machine to the LOCK position.When the scale
count down, press NET | GROSS and ON | ZERO keys together, Wait till display shows
to enter “Self-Test Mode”.
INTERNAL VALUE MODE ( must hook up Load Cell to test)
' Press TARE to enter, and the display shows internal value
( Please check whether the internal value has changed obviously with weight changing.
) Please check the backlight.
* Press ON | ZERO key to back to the last screen , the display shows
KEYPAD TEST MODE
' Press TARE to enter, display shows
Keypad’s internal code: TARE key= 07, UNITS key= 06, NET | GROSS key=05
( Press ON | ZERO key to back to the last screen , the display shows
FIRMWARE VERSION DISPLAY MODE
' Press TARE to enter, display shows the firmware version ,
( Press TARE key again, the display shows maintenance number for 2 secs for
lead acid battery model or “900” for Wipower models with lithium battery
) Press ON | ZERO key to back to the last screen, display shows
BACK TO THE LAST SCREEN
Press TARE key to exit self-test mode, the scale will restart automatically.
Press key
Press key
Press key
Press key