Tree HRB 224 User manual

Professional Weighing
Equipment
HRB Series intelligent weighing scale
HIGH RESOLUTION BALANCE
WITH COUNTING FUNCTION
HRB 224
Operation Manual

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2
Table of Contents
Section Page
Declaration of Conformity 3
Customer Service 4
Introduction 5
Safety 6
Weight Scale 7
Functions 8
Features 9
Application & Conformity 10
RS232 11
Getting Started 12
Delivery 12
Assembly & Installation 13-14
Program Options 15
Parameter Settings 16-17
Calibration 17
Maintenance & Service 18
Transportation & Storage 18
Warranty 19

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Declaration of Conformity
Declaration of conformity for apparatus with CE mark
We hereby declare that the product to which this declaration refers conforms to
the following standards.
Electronic scale:HRB - High Resolution Balances
USA model
UK (Europe) model
HRB 224
Mark applied
EU Directive
Standards
2004/108/EC
EN 61326-1: 2006
Signature:
Boon Lim, R & D Manager
Date: 14. 11. 2012
LW Measurements LLC, 620 Carlson Court, Rohnert Park, CA 94928

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Customer Service
USA
LW Measurements LLC
620 Carlson Court
Rohnert Park, CA 94928
USA
Tel: [phone]
FAX: [phone]
http://lwmeasurements.com
EUROPE
LW Measurements Europe Ltd
Chalkwell Park House 700 London Road
Westcliff-on-Sea Essex SS0 9HQ
United Kingdom
Tel: [phone]
Fax: [phone]
http://lwmeasurements.com

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Introduction
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 scale 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.

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Safety
Representations and symbols
Important instructions, which involve safety, are highlighted with the appropriate mark:
Safety recommendations
When using the weighing equipment in surroundings with increased safety requirements,
the corresponding regulations must be observed.
The weighing scale may only be used with the power adapter supplied.
Before connecting the power adapter to the scale, the user must ensure that the
operating voltage stated on the power adapter is compliant 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 scale must immediately be
disconnected from the electricity supply (pull out the power adapter).
If there should be any reason to believe that it is no longer safe to operate the scale, it
should 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 set out in
maintenance and servicing.
The weighing scale must not be operated in an area subject to explosion risks.
Care must be taken when weighing liquids to ensure that no liquid is spilled into the
inside of the scale or into connections on the rear of the equipment or the power adapter.
If liquid is spilled on the scale, it must immediately be unplugged from the main electricity
supply (pull out power adapter).
The weighing scale may be operated after it has first been inspected by a service
technician.
These operating instructions must be read by each user and should be easily accessible
at the workplace at all times.

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Weight Scale
Construction & Functions
The weighing scale consists of the following parts;
Weight scale body
The scale-pan
Glass Draft Shield
The adapters
Operating manual

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Functions
The HRB Series are high-quality electronic precision weighing scales with the
following specifications
Model number
Capacity
Graduation
Weighing pan Size
HRB 224
220g
0.1mg
Dia. 92 mm
2.2kg / 3.1 kg
Net/gross weight
Package
33 x 38 x 47 (cm
3
)
(Standard carton)
Package
(Master carton)
Operating Temp.
0-40℃(32-104℉)
Power source
Adapter 7.5V DC/5W

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Features
Auto zero tracking

Low battery indication

Large bright backlit LCD

Large stainless steel pan

Stability indication

Auto calibration

Selectable auto back light

Selectable beeper

Selectable auto shut off

Unit switching: g, ct, oz, tola

1.3 million internal resolution

24 bit A/D processor

Less than 1s display setting time

Highest quality sensor used

Counting function


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Application & Conformity
The Following are instructions of how to correctly use the weight scale:
The weighing scale may only be used for the weighing of solid-materials and of liquids
filled into secure containers.
The maximum capacity load of the weighing scale must never be exceeded, otherwise
the weighing scale may be damaged.
In using the weighing scale in combination with other devices as well as with devices
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.
The weighing scale has been manufactured and tested in accordance with the
standards and recommendations set out in the declaration of conformity.
The power adapter supplied for the weighing scale complies with the appropriate
electrical protection class.
The following applies to HRB series
Power supply:
HRB 224
Input: 110V 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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RS232 Data interface
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
1~2
3
4~13
14~18
19
20
‘W: ’
P
DATA
UNIT
CR
LF
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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Getting started
The scale is packaged in an environmentally-friendly carton, which provides optimum
protection for the balance during transportation.
We suggest that you keep the original packaging in order to avoid damage if you are
shipping or transporting the scale to a different location. It is also the best way to keep it
in the best conditions if it will not be used for an extended period of time.
In order to avoid damage, please follow the instructions provided below, when
unpacking the scale:
Unpack the scale carefully.
When outside temperatures are very low, the scale should be stored for a couple
hours and kept in its box in a dry room at normal temperature, so that no
condensation settles on the unit when opening the box.
Check the scale immediately after unpacking for any external visual damage. If
there is any damage on scale, contact customer service immediately.
If the scale is not to be used immediately after purchase, it should be stored in a
dry place where fluctuations in temperature are low. (Reference pg.18).
Read through these operating instruction, before you work with the unit and pay
attention to the Safety recommendations (reference Safety pg. 6).
Delivery
Inspect delivery for completeness immediately on unpacking all components.
Checklist for complete delivery
Component delivered present yes / no
Weighing unit body
Scale pan
Operating manual
AC power adapter

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Assembly & Installation
The weighing scale is delivered in a partly dismantled condition. Assemble the individual
components in the following sequence:
Place your machine on a level, clean, and dry surface to obtain accurate
readings.
Place the plastic platter on top of the scale, flat side facing up so the platter
sits firmly on the machine with the four “legs” inserted into the corresponding
four receptacles.
Place the stainless steel platter on top of the plastic platter with the flat side
facing up.

Connecting the AC Adapter
The following Safety recommendations must be observed when connecting the scale:
The Scale should only be connected to the mains voltage socket with the power adapter
supplied. Check before connecting the power adapter to the mains socket, that the
operating voltage stated on the power adapter complies with the local mains voltage.
If the operating voltage is not the same as the mains voltage, the power adapter must
not be connected to the mains socket and contact customer service.
Placement of Scale
The location in which the scale is placed is very important in order for the scale to work
to its full potential. Certain conditions can affect the capabilities of the scale, conditions
like: the presence of air flow, variations in temperature, and direct sunlight. Please
follow the recommendations given below in choosing a location to place your scale.
Place the scale 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
Avoid placing the scale near or on any magnetic surfaces.

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The balance is fitted with one bubble level, and adjustable feet for level-control that
allow for small height differences or any unevenness in the surface on which the
balance is placed.
The screw feet must be adjusted so that the air bubble is precisely in the center of the
sight glass of the bubble level.
Place the scale horizontally and keep the bubble inside the bubble level aligned with the
circle (Fig.3.2). In order to get exact measurements, the balance must be carefully
leveled after each re-location.
Fig. 1 correct leveling with the aid of the bubble level
DISPLAY MESSAGE:
Low Battery
Negative value
Stabilizing
Tare
Weighing Units
Zero

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Key Functions:
The On/Off key is to turn the Balance On or Off (Note: it has an On/Off hard
switch at the bottom).
The Zero key allows the user to subtract the container value multiple times within
the capacity weight, and is used to set or re-adjust the weighing scale in correct
zero position.
The Print key is to send data to external device through RS232 connector.
The Unit key is to toggle between different units of measurement.
The TARE key is to subtract the weight on balance (range 0% to 100% of
weighing capacity).
Program options
Please see our web-site at http://lwmeasurements.com for practical demonstrations of
application usage.
Interface Settings
Press “On/Off” to turn on the scale, when instrument displays 8888888
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 the “Zero” key to enter print mode, the display will show n xxx mod
Press “Unit” to select CON, OFF, KEY, STB (Default setting is KEY)

oOFF stands for serial data output disabled
oKEY stands for manual mode by pressing “PRINT”
oSTB stands for automatic print when scale is stable
oCON stands for continuous print
Press [Zero] again to return to weighing mode
Parameter settings

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Setting Zero range when power on
Press the “On/Off” key, and when “ 8888888 “ shows, press “TARE” key,
display will show “ Pz xxx”, press the “Unit” key to select, factory default setting
is 20.
Setting zero range of ZERO key
Press “On/Off” key, and when“ 8888888 “ shows, press “TARE” key, and then
press “Zero” key, display shows “ zr xx ”, press UNIT key to select, factory
default setting is 4.
Setting Zero range of TARE key
Press the “On/Off” key, and when“8888888 “ shows, press “TARE “ key,
and then press “Zero” key multiple times till display shows “ tr xxx”, press
the “Unit” key to select, factory default setting is 100.
Setting overload range
Press the “On/Off” key, and when “ 8888888 “ shows , press “TARE”
key, and then press “Zero” key multiple times till display shows “ Ov
xx ”, press the “Unit” key to select, factory default setting is 9d
Setting Beeper
Press ON/OFF key, and when“8888888 “shows, press “TARE” key, and then
press ZERO key multiple times till display shows “b2 ON” or “b2 OFF”, press
the “Unit” key to switch it on or off.
Setting Auto Shut off
Press the “On/Off” key, and when“8888888 “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”

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Setting Backlight
Press the “On/Off” key, and when“8888888 “shows, press “TARE” key, and then press
the “Zero” key multiple times until the display shows “bL ON”, “bL OFF” or “ bL AUt”,
Press the “Unit” key to select backlight to be “On”, “Off” or “Aut”.
Calibration
Using an External Calibration Weight
Calibration is required when the weighing scale is initially installed or if the
balance is moved to a substantial distance from the original location.
Turn the Balance on and let it warm up for about 10 minutes, then press the
“CAL” during normal weighing mode.
The display will show “please wait” and then “- 200 CAL g” flashing.
Load 200g test weight on the pan, wait until it shows “200.0000g” and a
beep sound, then return to normal weighing mode to finish calibration.
Remove the test weight. Check with test weight again.
Now the calibration is completed, remove the test weight.
If not, repeat above steps.


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Maintenance & Service
The weighing scale is a precision instrument, it must be treated carefully and cleaned
regularly
For maintenance-work, the balance must be disconnected from the power supply
(remove power adapter plug from socket). Also ensure that the balance cannot be
connected to the power supply during the work by a third party.
Make sure that no liquid spills into the scale while performing maintenance work. If
liquid is spilled on the scale, it must be inspected by a service technician.
Regularly perform maintenance to the weighing pan and the weighing pan holder by
removing any dirt or dust from under the weighing pan and on the weighing scale
housing. Use a soft brush or a soft, lint-free cloth, moistened with a mild soap solution
Never use solvents, acids, alkalis, paint thinners, scouring powders or other aggressive
or corrosive chemicals for cleaning; these substances can cause damage to the
surfaces of the scale housing.
Transport & Storage
Your weighing machine is a precision instrument, treat it carefully. Avoid shaking,
severe impacts and vibration during the transportation. Make sure that there are no
marked temperature fluctuations during the transportation and that the weighing
machine does not become damp (condensation).
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 (refer to Maintenance &
Service) 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

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Warranty
The products are under warranty against factory defects for a period of two (2) years
from the date of shipment.
For Customers within the lower 48 states of the continental United States. LW
Measurements will pay for fright both ways for the first 30 days after purchase. After 30
days expire the customer is responsible for shipping the product back to us. After the
product is received we will inspect it and as necessary we will repair or replace and will
ship the product back to the customer at our expense.
Any new scales returned for warranty must be properly packaged in the original box. If
they are not properly packed an in the original box, the customer pays for shipping cost.
If we determine there is a factory defect, we will pay for the shipping back. If we
determine that it is not a factory defect, the customer will pay shipping.
For Customers outside the lower 48 States, including Mexico, Canada, Puerto Rico,
Hawaii, Alaska and all other countries, customers must pay for shipping.
Our warranty does not cover misuse or neglect including but not limited to battery or
water damage, overloading, and chewed or cut wires. If the product is found to have
been misused or damaged by the customer, LW measurements is not responsible for
the cost of return.
For warranty claims please go online to lwmeasurements.com and fill out the warranty
submission form or call your customer service representative.

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