LW MEASUREMENTS TREE DCT Series User manual

Professional Weighing
Equipment
DCT SERIES
DUAL COUNTING SCALE
Operating Manual

2
Table of Contents
Section Page
3
4
5
6
7
8
9-10
11
12
12
13-14
14-16
17-18
19-21
21-22
22-23
Declaration of Conformity
Customer Service
Introduction
Safety
Weight Scale
Functions
Features
Application & Conformity
Getting Started
Delivery
Assembly & Installation
Application Menu
Program Options
Calibration
DCT V1.1
DCT V1.2
DCT V1.3
Maintenance & Storage
Transport & Storage
Warranty
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24-25
26
27
28

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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:DCT Dual Counting Scale
Available Models:
DCT-50
DCT-100
Mark applied
EU Directive
Standards
2004/108/EC
EN 61326-1: 2006
Signature:
Boon Lim, R & D Manager
Date: 04/27/2014
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://www.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 labelling of potential hazards and advice, please see Safety below.

6
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
The weighing scale consists of these parts
•The weighing scale body (1)
•The scale-pan (2)
•The adapter (3)
•Operating manual.
•Test weight
Figure 2.1 your weighing scale
1
2
3

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Functions
The DCT Series are high-quality electronic precision weighing scales designed to
function as counting scales with the following specifications.
Specifications:
Model number
Capacity
Division
Weighing pan Size
DCT-50
50lb/2lb
0.001 lb./0.00005lb
13.6 x 10.1/4.48 x 4.48
DCT-100
100lb/4lb
0.002lb/0.0001lb
13.6 x 10.1/4.48 x 4.48
Package
(Standard carton)
22x16x7 inches
Package
(Master carton)
2 Units in one box: 22x16x15 inches
Operating
0°C - 40°C (32℉-104℉)
Temperature
Power source
Rechargeable batteries or AC/DC
Adapter 12V/1A

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Features
Auto zero tracking
Intelligent applications: weight unit conversion, parts counting
Low battery indication
Large LED
Large heavy gauge stainless steel square pan
Second smaller heavy gauge stainless steel pan
Stability indication
Auto calibration
Selectable auto back light
Unit switching kg or lb.
Variable kg or lb reference weight calibration software
1.3 million internal resolution
Selectable display resolutions, 50000d, 25000d, 10000d, 6000d, 5000d
and etc.
24 bit A/D processor
Highest quality sensor used
Die cast aluminum sub-support bottom sensor support and steel thread
footing
Able to enter unit piece weight on numeric keyboard
Able to enter tare weight on numeric keyboard
Print out change from kg to g.
Details of your weighing scale
Large weighing pan
Small weighing pan
Keypad
Bright back-lit display

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SCALE 3 Port RS232 Port
Power
Connection
USB Port On/Off Switch
Leveling feet

11
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 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 produced for the operation of the weighing scale complies with the
appropriate electrical protection class.
The following applies to all DCT series weighing scales
Power supply:
Input: 110V AC 50Hz to 60Hz
Output: 12V/1A
Allowable ambient conditions
Temperature: 0°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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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. 21).
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 pan(s)
Power adapter
Operating manual
Test weight
Weighing unit body

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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 stainless steel platters 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
balance:
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 (see Fig.1)
Place the scale horizontally and keep the bubble inside the bubble level aligned with
the circle (Fig.1). 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 and adjusting feet.
Application Menu

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Display messages
Kg- Unit of measure
Lb.- Unit of measure
Stb - Stable indication
Zero: ZERO INDICATOR turns on when the scale is in the zero position
Tare: TARE INDICATOR turns on when this function is used
LoUW: turns on when sample unit weight is not heavy enough for accurate
counting
LoWT: turns on when sample number is not enough for accurate counting
M+ is used when storing the counts data; this data is memorized by pressing this
key and can be accumulated up to 99 times.
S1: SCALE 1 working state
S2: SCALE 2 working state
S3: SCALE 3 working state
LoB: low voltage, please charge battery
CHG: charged state, red LED lights up when charging, when the battery is fully
charged, Red and Green LED lights flash alternately.
Key Functions
SCALE/SELECT: Press this button to select available counting scale among scale
1, scale 2, and scale 3. You can only choose to use one of them at a time.
 SCALE 1: Main counting scale, the bigger platform
 SCALE 2: Smaller counting scale offers more accuracy
 SCALE 3: Extra connection platform. When we get the sample weight
from SCALE 2, we can use this platform to count more samples.
Operation way：press “Scale/Select” key，a weight line will show flashed
“SCALE 1”Press “Scale/ Select” key to select then press “Enter” key to confirm.
“Unit” key changes the unit of measure between kg. and lb.
“Zero” key sets display to zero or subtract the container weight. The zero range is
<10% of full capacity. Zero LED indicator will illuminate when you active the zero
function.
“Tare” key subtracts the weight of a container placed on the weighing platform.
The tare range is 100% full capacity. Press the Tare key to enable the Auto-Tare
function, the Tare LED indicator will illuminate when you activate the Tare
function.
Operation way 1 ：turn on the scale and wait for “Zero” mode then place
container on the platform and press “Tare” key，Weight line will show flashed
0.0000,Tare LED indicator will light up when you activate it.
Operation way 2：（ new version function）turn on the scale and wait for “Zero”
mode key in the number of tare, press<TARE>key, WEIGHT line will show -
X.XXX，ZERO LED indicator will light up when you activate it.
PRINTER key is used to transmit data to a printer, computer, or other device.
It should be connect to PC or printer by USB or RS232.
ENTER key has the same function as it would on a computer keyboard.

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MEM/STORE key is the SAMPLE WEIGHT MEMORY KEY. Press this key to
memorize sample weight, scale can memorize up to 16 different sample weights.
E.x.：if you want to store sample weigh 0.22047 （1/1000 lb）at place 7，
please operate as below:
Press “MEM/STORE”，WEIGHT line will show flashed [01] ，press [* ] to
select storage place 7 then press ENTER to confirm.
MEM/READ key is the SAMPLE WEIGHT READ KEY. Press this key to recall the
memorized sample weight, if more than one sample weight is memorized
continue to press this key until the correct sample weight is selected.
Second operation way: input unit weight storage place by number key then
press “MEM/READ” key to catch unit weight.
“M+” MEMORY KEY is used to store the counting data. This data is memorized by
pressing this key and can be saved in the memory up to 99 times.
Operation：place weight then press “M+”，WEIGHT line will show how many
times =XX=,UNIT WEIGHT line shows flashed [Add]，press <Enter> key to
confirm it and back to counting mode. M+ LED indicator will light up when you
activate it.。Press [TOTAL] key to call out the total value of accumulation
“MC” key is used to clear the stored counting data.
Operation：press the “MC” key when the M+LED lights up，WEIGHT line will
show how many times =XX =,when the UNIT WEIGHT line shows flashed
“CLr”，press “Enter” to light off.
“SAMPLE” key is used when setting the counted number of samples on the
platter into the scale memory.
UNIT WEIGHT is used when setting the known unit weight data into the scale
during normal operation. (1/1000kg or 1/1000lb)
“QTY/SET” key is used to switch between the pieces counting function and
quantity check weighing function.
Warning setting of minimum or maximum weight.
Press “QTY/SET” key，the display will show CH=OFF, press the “Enter” key
to select CH=ON. Then press [*] key，UNIT WEIGHT line flashed ，press
number key to input minimum weight. Press [*] key，TOTAL line flashed，
press number key to input maximum weight. Press “QTY/SET” key to exit
setting mode and back to weighing mode.
If the weight placed on the scale is under the set minimum weight at counting
mode, the scale will transmit a tone. Also, if the weight placed on the scale
exceeds maximum weight, the scale will transmit another tone.
NUMERIC (0-9) keys are used for setting numeric data for sample numbers,
sample weights or to set a limit for the HI/LO settings.
[*] Key is used to change the division when the scale is in SCALE 3 mode.
“TOTAL” key displays the accumulated total pieces on the scale
“ESC” key is used to exit from the current menu
“CE” key is used for cancelling the numeric setting data or cancels the previous
unit weight data.

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Program options
Besides performing accurate simple weighing, your versatile weighing scale can also
perform pieces counting
Pieces counting
Counting pieces with known sample unit weight
Turn scale on
Wait for "0" to appear on the display. If necessary, press “Zero” key to set the
display to “0”Key in unit weight, press “Unit Weight” key to confirm
Store the unit weight by pressing “Mem/Store” key, the display will show a
flashing number for example “01”, this is the location where the stored sample
unit weight can be found. Press [*] key to toggle between 01-16, press the
“Enter” key to confirm the selection.
Press the “Scale/Select” key to select either SCALE 1 or SCALE 3, be sure
to place the additional pieces on the scale that is selected.
***NOTE: The items being weighed should be within the selected scales capacity.
Counting pieces without known sample unit weight
Turn scale on
Wait for "0" to appear on the display. If necessary, press “Zero” key to set the
display to “0”
Press “Scale/ Select” key to select SCALE 2, press “ENTER” to confirm
Put a pre-known number of samples onto SCALE 2, key-in the known number
using the numeric keypad.
Press “Sample” to get the sample unit weight
Press the “Scale/Select” key to select either SCALE 1 or SCALE 3, be sure
to place the additional pieces on the scale that is selected, it will display the
total number of items.
***NOTE: The items being weighed should be within the selected scales capacity.

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Select a pre-stored unit weight
Key in the number of the pre-stored weight (01-16) using the numeric key pad,
press “MEM/READ” key and select the pre-stored sample unit weight, press ENTER
to confirm.
High/Low Check Weighing with Counting
Turn scale on
Wait for "0" to appear on the display. If necessary, press “Zero” key to set the
display to “0”
Press “Qty./Set” key, display will show CH=OFF or CH=ON
Press the “Enter” key to select “ON”
Press [*] key, display will show a flashing “0” at UNIT WEIGHT, key in the
lower limit using the numeric key pad, press [*] gain, display will show a
flashing “0” at TOTAL, key in the upper limit using the numeric keypad.
Press “Qty/Set” key to confirm the setting and return to weighing mode.
Press the “Scale/Select” key to select either SCALE 1 or SCALE 3, be
sure to place the additional pieces on the scale that is selected.
***NOTE: When adding items onto the scale, the scale will beep in a particular
tone if the weight (number of items) is less than the lower limit and beep in
another tone if it is higher than the upper limit.

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Calibration
Using an External Calibration Weight:
Calibration is required when the weighing scale is initially installed or if the scale is
moved to a substantial distance from the original location.
Scale 1 Calibration
Turn on the scale and let it warm up for about 1 minute.
As the scale is counting down, press the following buttons in order [1], [3], [1],
[1] then press “ENTER”.
Display will show the following: ‘WEIGHT DISPLAY’ shows SCALE 1, ‘UNIT
WEIGHT’ shows CAL-0, ‘TOTAL DISPLAY’ will show A/D value.
Press the “Unit” key to select a unit of measure (kg. or lb.)
Press “Enter” to set zero point (UNIT WEIGHT will show CAL-0 flashing
for a few seconds and then changes to XXXX to set the calibration
weight)
Press the “CE” key and then press the corresponding number buttons based off
the weight you are using to calibrate (example: if you are using 5lbs to calibrate
the scale you would key in 5lbs).
Calibration weight will show in the UNIT WEIGHT display, put the corresponding
weight on scale.
Press the “Enter” key, and the UNIT WEIGHT display will show flashing XX and
then changes to XX.XXX lb. Once this occurs the calibration process is complete.
***Note: Make sure nothing is loaded on the platform before you are asked to
place the calibration weight. Once calibration is complete you will need to reboot
the scale and place the sample test weight on the platter to assure the calibration
was completed correctly.
Linearity Calibrations
Scale 1 linearity calibration
Turn on the power at the left back side of the scale
Press the following buttons in order [1], [3], [1], [4] then press the “Enter” key
when the scale examining itself.
MENU SETTING:
‘WEIGHT DISPLAY’ shows LINE 1
‘UNIT WEIGHT display’ shows 0.0000,
‘TOTAL display’ will show A/D value.
Then press (UNIT) button to select calibration units between kg and lb.
CALIBRATION:
Make sure nothing loaded on the bigger platform.

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Press (ENTER) button to set zero point. (UNIT WEIGHT display will show 0.0000
flashing for few seconds and then changes to XX.XX to set the calibration
weight).
Press the “Enter” key button, the UNIT WEIGHT display will show flashing XX and
then put the accordingly weight on the platform and it will change to XX.XXX lb.
Once this occurs the calibration process is complete.
Scale 2 Calibration
Turn on scale
As the scale is counting down, press the following buttons in order [1], [3], [1]
and [2] then press the ENTER key.
Display will show the following: ‘WEIGHT DISPLAY’ shows SCALE 2, ‘UNIT
WEIGHT’ shows CAL-0, ‘TOTAL DISLAY’ will show A/D value.
Press ENTER to set zero point (UNIT WEIGHT will show CAL-0 flashing for a
few seconds and then changes to XXXX to set the calibration weight).
Press “CE” key and then press corresponding number buttons based off of the
amount of weight you are using to calibrate (example: if you are using 1lb to
calibrate the scale you would key in 1lb).
Calibration weight will show in the UNIT WEIGHT display, put the corresponding
weight on the scale.
Press the “Enter” key button, the UNIT WEIGHT display will show flashing XX and
then put the accordingly weight on the platform and it will change to XX.XXX lb.
Once this occurs the calibration process is complete.
***Note: Make sure nothing is loaded on the platform before you are asked to
place the calibration weight. Once calibration is complete you will need to reboot
the scale and place the sample test weight on the platter to assure the calibration
was completed correctly.
Scale 2 linearity calibration
Turn on the power at the left back side of the scale
Press the following buttons in order [1], [3], [1], [5] then press the “Enter” key
when the scale examining itself.
MENU SETTING:
‘WEIGHT DISPLAY’ shows LINE 1
‘UNIT WEIGHT display’ shows 0.0000,
‘TOTAL display’ will show A/D value.
Then press (UNIT) button to select calibration units between kg and lb.
CALIBRATION:
Make sure nothing loaded on the bigger platform.
Press (ENTER) button to set zero point. (UNIT WEIGHT display will show 0.0000
flashing for few seconds and then changes to XX.XX to set the calibration
weight).