Professional Weighing Equipment
HRB Series intelligent weighing machine
HIGH RESOLUTION BALANCE
HRB(-E) 103/ HRB (-E) 203 / HRB(-E) 303
Operating Manual
Mark applied
EU Directive
Standards
2004/108/EC
EN 61326-1: 2006
USA model
UK (Europe) model
HRB 103
HRB-E 103
HRB 203
HRB-E 203
HRB 303
HRB-E 303
We hereby declare that the product to which this declaration refers
conforms to the following standards.
Electronic scale: HRB - High Resolution Balances
Date: 14. 11. 2012 Signature:
LW Measurements LLC, 3510 Industrial Drive, Unit H Santa Rosa, CA 95403
Declaration of Conformity
Declaration of conformity for apparatus with CE mark
Boon Lim, R & D Manager
1
NOTE: A bolt has been placed on the weighing scale prior to
shipment Remove this bolt before use. See picture as shown
on the location of the bolt.
Identification
Customer Service
USA
LW Measurements LLC, 3510 Industrial Drive,
Unit H Santa Rosa, CA 95403
USA
Tel: (707) 542-2185
FAX: (707) 542-3285
EUROPE
LW Measurements Europe Ltd
Chalkwell Park House 700 London Road
Westcliff-on-Sea Essex SS0 9HQ
United Kingdom
Tel: 01702-476700
Fax: 01702-477380
ASIA
LW Measurements PTY Ltd
Block 1004, Toa Payoh North
#03-16 Singapore 318995
Tel: (65) 6458 3438
HP: (65) 8119 3401
http://lwmeasurements.com
Refer to our website for information about local customer service centers
and details of their addresses.
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Introduction
7 Transport, storage
What you should know about these Operating Instructions:
Tree® Professional Weighing Equipment products are simple to operate.
Nevertheless, you should read through these operating instructions in their
entirety, so that you can make optimum use of the full potential and the diverse
possibilities of the weighing machine in your daily work.
These operating instructions contain guidance in the form of pictograms and
keyboard diagrams, which should help you in finding the required information:
For the labeling of potential hazards and advice, please see Safety below.
3
7.1 Transportation and shipping of the weighing machine
Your weighing machine is a precision instrument. Treat it carefully. Avoid
shaking, severe impacts and vibration during the transportation.
Take care that there are no marked temperature fluctuations during the
transportation and that the weighing machine does not become damp
(condensation).
7.2 Storage of the weighing machine
If you would like to take the weighing machine out of service for an extended
period, disconnect it from the electricity supply, clean it thoroughly (see Section
8 .Maintenance and servicing.) and store it in a place which meets the following
conditions:
No violent shaking, no vibrations
Minimum temperature fluctuations
No direct solar radiation
Minimum moisture
The weighing machine should preferably be dispatched and transported in the
original packaging to avoid transportation damage.
The weighing machine should preferably be stored in the original packaging,
since this provides optimal protection for the weighing machine.
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6 Maintenance and service
Section
Heading
1
Safety
1.1 Representation and symbols
1.2 Safety recommendations
2
Your weighing machine
2.1 Construction and functions
2.1.1 Construction of the weighing machine
2.1.2 Functions of the weighing machine
2.2 Application, conformity
2.2.1 Correct use of the weighing machine
2.2.2 Conformity
2.3 Data and parameters
2.3.1 Technical data
2.3.2 RS232 Data Interface
3
Getting started with your weighing machine
3.1 Unpacking the equipment
3.2 Scope of delivery
3.3 Assembling your weighing machine
3.4 Choice of a suitable location
3.5 Checking the mains voltage
3.6 Leveling the weighing machine
3.7 Calibrating the weighing machine
4
Working with the application menu using the intelligent
keypad
4.1 Display messages and key functions
4.1.1 Display messages
4.1.2 Key functions
4.2 Program options
4.2.1 Interface Setting
4.2.2 Parameter settings
4.2.2.1 Setting Zero range when power on
4.2.2.2 Setting Zero range of ZERO key
4.2.2.3 Setting Zero range of TARE key
The weighing machine must be treated carefully and cleaned regularly. It is a
precision instrument.
For maintenance-work, the balance must be separated from the power supply
(remove power adapter plug from socket). Also ensure that the balance cannot
be reconnected to the power supply during the work by a third party.
Take care during cleaning that no liquid penetrates into the appliance. If liquid is
spilt on the balance, the latter must immediately be disconnected from the
electricity supply. The balance may only be used again after it has first been
checked by a service engineer.
The connections on the rear of the appliance and the power adapter may not
come into contact with liquids.
Regularly dismantle the weighing pan and the weighing pan holder and remove
any dirt or dust from under the weighing pan and on the weighing machine
housing with a soft brush or a soft, lint-free cloth, moistened with a mild soap
solution. The scale and the holder can be cleaned under running water. Take
care that both parts are completely dry before they are re-installed on the scale.
Contents
Never use solvents, acids, alkalis, paint thinners, scouring powders or other
aggressive or corrosive chemicals for cleaning, since these substances attack
the surfaces of the scale housing and can cause damage.
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4
4.2.2.4 Setting overload range
4.2.2.5 Setting Beeper
4.2.2.6 Setting ZERO and TARE function merge function
4.2.2.7 Setting Auto Shut off
4.2.2.8 Setting Backlight
5
Calibration using an external calibration weight
6
Maintenance and service
7
Transport and storage
7.1 Transportation and shipping
7.2 Storage
5
5 Calibration - Using an External Calibration
Weight
Calibration is required when the weighing machine is initially installed or if the
Balance is moved to a substantial distance from the original location. 30
minutes of warming up of the Balance is always needed before weighing and
calibration.
Turn the Balance on and when display shows “--------”, press ZERO
key
The display will show “CAL”
Press ZERO key again, the display will show “X000.00”, “X” is the
flashing digit
Press UNIT key, the flashing digit will move to right
Press TARE key to increase the value of the flashing digit(“X” is the
calibration weight can be set according to users’ requirements, we
recommend a minimum weight of at least 50% of the Balance capacity)
Press ZERO key, display will show “CAL” and then series of the digit,
wait for stable indication shows, press UNIT key , display will show
--------, then “X000.00”
Place the corresponding test weight on the center of the pan
The display backlight activated and returns to weighing mode
Now the calibration is completed
Turn off the power, then turn on the power again, place a known weight
on the platform to verify if it is accurate.
If not, repeat above steps.
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4.2.2 Parameter settings
4.2.2.1 Setting Zero range when power on
Press ON/OFF key, and when “- - - - - - “ shows, press TARE key, display will
show “Pzr x.x”, press UNIT key to select, factory default setting is 20
4.2.2.2 Setting Zero range of ZERO key
Press ON/OFF key, and when“- - - - - - “shows, press TARE key, and then press
ZERO key, display shows “Kzr xx”, press UNIT key to select, factory default
setting is 4
4.2.2.3 Setting Zero range of TARE key
Press ON/OFF key, and when“- - - - - - “shows, press TARE key, and then press
ZERO key multiple times till display shows “Ktr xxx”, press UNIT key to select,
factory default setting is 100
4.2.2.4 Setting overload range
Press ON/OFF key, and when“- - - - - - “shows, press TARE key, and then press
ZERO key multiple times till display shows “Ovr xx”, press UNIT key to select,
factory default setting is 9d
4.2.2.5 Setting Beeper
Press ON/OFF key, and when“- - - - - - “shows, press TARE key, and then press
ZERO key multiple times till display shows “b2 ON” or “b2 OFF”, press UNIT
key to switch it ON or OFF.
4.2.2.6 Setting ZERO and TARE function merge function
Press ON/OFF key, and when“- - - - - - “shows, press TARE key, and then press
ZERO key multiple times till display shows “Zt ON” or “Zt OFF”, press UNIT key
to switch it ON or OFF, in this model, it has to be set OFF
4.2.2.7 Setting Auto Shut off
Press ON/OFF key, and when“- - - - - - “shows, press TARE key, and then press
ZERO key multiple times till display shows “A ON” or “A OFF”, Press UNIT key
to select Auto shut off mode “ON” or “OFF”.
4.2.2.8 Setting Backlight
Press ON/OFF key, and when“- - - - - - “shows, press TARE key, and then press
ZERO key multiple times till display shows “L ON”, “L OFF” or “ L AU”, Press
UNIT key to select backlight to be “On”, “Off” or “Auto”.
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1 Safety
1.1 Representations and symbols
Important instructions, which involve safety, are highlighted with the appropriate
mark:
1.2 Safety recommendations
When using the weighing equipment in surroundings with increased safety
requirements, the corresponding regulations must be observed.
The weighing machine may only be used with the power adapter supplied
exclusively for use with the weighing machine.
Before inserting the power adapter, the user must ensure that the operating
voltage stated on the power adapter agrees with the mains voltage.
If not, please contact Customer Service at the address above.
If the power adapter or its cable is damaged, the weighing machine must
immediately be disconnected from the electricity supply (pull out the power
adapter).
The weighing machine may only be operated from mains electricity supply with
a power adapter which is in perfect condition.
If there should be any reason to believe that it is no longer possible to operate
the weighing machine without danger, the weighing machine is to be
immediately unplugged from the electricity supply (pull out power adapter) and
secured against inadvertent operation.
In carrying out maintenance work, it is essential to follow the recommendations
in Chapter 6 Maintenance and service.
The weighing machine must not be operated in an area subject to explosion
risks.
Care must be taken when weighing liquids to ensure that no liquid is spilt into
the inside of the weighing machine or into connections on the rear of the
equipment or the power adapter. If liquid is spilt on the weighing machine, it
must immediately be unplugged from the mains electricity supply (pull out
power adapter).
The weighing machine may only be operated again after it has first been
re-checked by a service technician.
These operating instructions must be read by each operator of the equipment
and must be available at the workplace at all times.
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2 Your weighing machine
2
Figure 2.1 Your weighing machine
3
1
4.2 Program options
2.1 Construction and functions
2.1.1 Construction of the weighing machine
The weighing machine consists of the weighing machine body (1), the scale-pan
(2), the adapter (3) and this operating manual.
7
Please see our web-site at http://lwmeasurements.com for practical
demonstrations of application usage.
4.2.1 Interface Settings
Press [ON/OFF] to turn on the scale, when instrument displays --------
Press [PRINT], the display will show b xxx BAU value
Press [UNIT] to select among (1200,2400,4800,9600), default setting is
9600
Press [ZERO] to enter Parity mode, the display will show P xxx PAR
Press [UNIT] to select odd, even or none ( odd stands for 7 data bits
with odd parity, even stands for 7 data bits with even parity, none
stands for 8 data bit without parity), default setting is none
Press [ZERO] to enter Print mode, the display will show n xxx mod
Press [UNIT] to select CON,OFF, KEY, STB
a) OFF stands for serial data output disabled
b) KEY stands for manual mode by pressing [PRINT]
c) STB stands for automatic print when scale is stable
d) CON stands for continuous print
Default setting is KEY
Press [ZERO] again to return to weighing mode.
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4 Working with the application menu using
Model number
Capacity
Graduation
Weighing pan Size
HRB(-E) 103
100g
0.001g
Φ98mm
HRB(-E) 203
200g
0.001g
Φ98mm
HRB(-E) 303
300g
0.001g
Φ98mm
Net/gross weight
2.2kg / 3.1kg
Package
(Standard carton)
35 × 28 ×35 (cm3)
Package
(Master carton)
2 units in one box: 59×38×39 (cm3)
Operating Temp.
0-40℃ (32-104℉)
Power source
6 x AA dry cells(not included) or AC/DC
Adapter 10~12V/150mA
Low battery indicator
Negative value indicator
Stable indicator
Weighing units
Zero indicator
Tare indicator
2.1.2 Functions of the weighing machine
the Intelligent Key-Pad
4.1 Display messages and key functions
4.1.1 Display messages:
4.1.2 Key Functions:
The HRB Series are high-quality electronic precision weighing machines with
the following specifications
1. The On/Off key is to turn the Balance On or Off (Note: it has an On/Off
hard switch at the bottom)
2. The ZERO key allows the subtraction of multiple container values
through the weighing range and is used to set or re-adjust the weighing
machine in correct zero position.
3. The Print key is send data to external device through RS232 connector.
4. The UNIT key is to toggle between different weighing units.
5. The TARE allows the user to subtract the container value and returns
the display to zero
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8
FEATURES
Figure 2.2 Details of your weighing machine
Weighing pan
Battery
compartment cover
Bright
back-lit display
Battery
compartment
(batteries not
included)
Bubble level
Mains power connection
Leveling feet
RS232 connection
Auto zero tracking
Low battery indication
Large bright backlit LCD
Large stainless steel pan
Stability indication
Auto calibration
Selectable auto back light
Selectable beeper
Unit switching: g, oz, lb, dwt ... ...
1.3 million internal resolution
200,000 display resolution
24 bit A/D processor
Less than 1s display setting time
Highest quality sensor used
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3.6 Leveling the weighing machine
To function properly, the balance must be precisely horizontal. The balance is
fitted with one bubble level. and adjustable feet for level-control, with the aid of
which it is possible to compensate for small height differences and / or any
unevenness in the surface on which the balance is positioned.
The screw feet must be adjusted so that the air bubble is precisely in the center
of the sight glass of the bubble level (see Fig. 1)
Place the scale horizontally and keep the bubble inside the bubble level aligned
with the red circle (See Fig.1). In order to get exact measurements, the balance
must again be carefully leveled after each relocation.
Fig. 1 Correct leveling with the aid of the bubble level
3.7 Calibration of the weighing machine
Since the Earth’s gravity is not the same everywhere, each balance must be
adjusted to compensate for the gravity differences at each location in
accordance with the underlying physical weighing principles. This adjustment
process, known as calibration and must be carried out on initial installation and
after each subsequent relocation.
In order to ensure exact measurements, it is recommended that the balance
should be calibrated regularly using a known external calibration weight (see
Section 5 below).
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3.3 Assembling your weighing machine
The weighing machine is delivered in partly dismantled condition. Assemble the
individual components in the following sequence:
Place the unit holder in position and add the weighing pan
Insert the power adapter cable plug into the socket at the rear of the
balance.
3.4 Choice of a suitable location
The environment in which your weighing machine is used is very important. Air
movement, temperature changes, vibrations, direct sunlight, etc. all influence
the performance of high precision weighing machines. Therefore, place your
weighing machine on a solid, sturdy surface that is free of air currents, vibration
and not in direct sunlight. The surface should not be magnetic and should be
located away from doors, windows, heaters, air conditioners and fans.
To summarize:
Put the weighing machine on a solid, firm and preferably
vibration-proof, horizontal base
Make sure that the weighing machine cannot be shaken or knocked
over
Protect from direct solar radiation
Avoid drafts and excessive temperature fluctuations
3.5 Checking the mains voltage
The following Safety recommendations must be observed when connecting the
balance to the mains:
2.2 Application, conformity
2.2.1 Correct use of the weighing machine
The weighing machine may only be used for the weighing of solid-materials and
of liquids filled into secure containers.
The maximum allowable load of the weighing machine must never be exceeded,
otherwise the weighing machine may be damaged.
In using the weighing machine in combination with other appliances as well as
with appliances produced by other manufacturers, the appropriate regulations
for the safe use of the relevant attachments and their application in accordance
with instructions must be observed.
2.2.2 Conformity
The weighing machine has been manufactured and tested in accordance with
the standards and recommendations set out in the declaration of conformity.
The power adapter produced for the operation of the weighing machine and
intended exclusively for this application, complies with the appropriate electrical
protection class.
2.3 Data and parameters
2.3.1 Technical data
The balance may only be operated with the power adapter supplied.
Check before connecting the power adapter to the mains supply, that the
operating voltage stated on the power adapter agrees with the local mains
voltage.
If the operating voltage is not the same as the mains voltage, the power adapter
must on no account be connected to the mains supply. Contact customer
service.
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The following applies to HRB series
Power supply:
. Input: 110 or 230V AC (+/-15-20%); 50 to 60Hz
. Output: 10-12v DC 150mA
Allowable ambient conditions
Temperature: 5°C - 40°C
Relative humidity: 25% - 85%, non-condensing
If you have any questions on the technical data or require detailed technical
information on your balance, please contact your technical representative.
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2.3.2 RS232 Data interface
1~2 3 4~13
14~18
19
20
‘W: ’ P DATA
UNIT
CR
LF
Component delivered present yes / no
Weighing unit body
Weighing pan
Power adapter
Operating manual
1. Connector: DB9
BALANCE PC
2 2
3 3
5 5
2. Transmissions Settings
Mode: Simplex Asynchronous Serial Baud Rate: 9600
Data Bit: 8 Parity Bit: None
Stop Bit: 1 Data Format: ASCII
3. Transmission Information Format： 20 Byte ，blank=20H
W: Start of Data Transmission=57H+3AH
P : Polarity ‘+’ = 2BH = Positive ‘-’ = 2DH =Negative
DATA: ‘ 12.345’= 20H+20H+20H+20H+31H+32H+2EH+33H+34H+35H
UNIT: ‘g’ =67H+20H+20H+20H+20H
‘oz ’ =6FH+7AH+20H+20H+20H
‘lb’ =6CH+62H+20H+20H+20H
‘dwt’ =64H+77H+74H+20H+20H
‘ozt ’ =6FH+7AH+74H+20H+20H
‘ct ’ =63H+74H+20H+20H+20H
‘tl.T’ =74H+6CH+2EH+54H+20H
‘tl.H’ =74H+6CH+2EH+48H+20H
‘tl.J ’ =74H+6CH+2EH+4AH+20H
‘GN’ =47H+4EH+20H+20H+20H
‘dr’ =64H+72H+20H+20H+20H
‘MM’ =4DH+4DH+20H+20H+20H
‘tola’ =74H+6FH+6CH+61H+20H
‘gsm’ =67H+73H+6DH+20H+20H
‘T/A/R’ =54H+2FH+41H+2FH+52H
‘T/M/R’ =54H+2FH+4DH+2FH+52H
‘pcs’ =50H+43H+53H+20H+20H
CR: = 0DH
LF: = 0AH
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3 Getting started with your weighing
machine
3.1 Unpacking the equipment
The machine is delivered in an environmentally-friendly carton, specifically
developed for this precision instrument, which provides optimum protection for
the balance during transportation.
We suggest that you retain the original packaging in order to avoid
transportation damage if re-shipping or transporting the balance and to allow
the unit to be stored in the best conditions if it is out of operation for
an extended period.
In order to avoid damage, attention must be given to the following points when
unpacking the balance:
Unpack the weighing machine carefully. It is a precision instrument.
When outside temperatures are very low, the balance should first be stored for
some hours in the unopened transport package in a dry room at normal
temperature, so that no condensation settles on the unit when unpacking.
Check the weighing machine immediately after unpacking for externally visible
damage. If you should find transport damage, please inform your service
representative immediately.
If the unit is not to be used immediately after purchase but only at a later time, it
should be stored in a dry place where fluctuations in temperature are as small
as possible (see Chapter 7 .Transport, storage.).
Read through these operating instructions, even if you already have prior
experience with weighing equipment, before you work with the unit and pay
attention to the Safety recommendations (see Chapter 1 .Safety).
3.2 Scope of delivery
Inspect delivery for completeness immediately on unpacking all components.
Checklist for complete delivery
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