Excell Precision WEIGHING SCALES User Manual
EXCELL PRECISION CO., LTD.
DIGITAL HIGH PRECISION
WEIGHING SCALES
USER INSTRUCTIONS
© Excell Precision Limited 2006. All rights reserved Worldwide.
The information contained herein is the property of Excell Precision Limited and is
supplied without liability for errors or omissions. No part may be reproduced or used
except as authorised by contract or other written permission. The copyright and the
foregoing restriction on reproduction and use extend to all media in which the
information may be embodied.
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TABLE OF CONTENTS
BEFORE USING THE SCALE.....................................................................................................3
PREPARING TO USE THE SCALE.............................................................................................3
INTRODUCTION..........................................................................................................................4
1. FEATURES...........................................................................................................................4
2. SPECIFICATIONS................................................................................................................5
3. POWER CONSUMPTION.....................................................................................................5
4. LOW BATTERY WARNING...................................................................................................5
LCD DISPLAY SYMBOLS...........................................................................................................6
KEYBOARD FUNCTION.............................................................................................................7
OPERATION................................................................................................................................8
1. DISPLAY BACKLIGHT..........................................................................................................8
2. ZERO....................................................................................................................................8
3. WEIGHING MODE................................................................................................................8
(1). Units Selection................................................................................................................8
(2). Totalising.........................................................................................................................8
I. Weight Totalising........................................................................................................9
II. Recall Totalised Weight Values...................................................................................9
III. Clear Totalised Weight Values....................................................................................9
(3). Deduction of the Container Weight...............................................................................10
I. The weight of the container is unknown ( Tare ).......................................................10
II. Recall the semi-auto tare value................................................................................10
III. Clear the semi-auto tare...........................................................................................10
IV. The weight of the container is known (Pre-set tare).................................................11
V. Recall the pre-set tare value.....................................................................................11
VI. Clear the pre-set tare value......................................................................................11
(4). Check Weighing............................................................................................................12
I. Pre-set the “Low limit value”, “High limit value”, and “the buzzer” operation.............12
II. Pre-set the Low limit value only................................................................................13
III. High/OK/Low indications..........................................................................................13
IV. Recall the check weighing setting............................................................................13
V. Clear the check weighing settings............................................................................13
4. COUNTING FUNCTION.....................................................................................................14
(1). Sampling.......................................................................................................................14
(2). Totalising.......................................................................................................................14
(3). Check Weighing............................................................................................................14
CONFIGURATION SETTINGS..................................................................................................15
1. CHECK-WEIGHING CONFIGURATION.............................................................................16
2. RS-232 SETTING...............................................................................................................17
3. EXIT CONFIGURATION SETTINGS...................................................................................18
RS-232 AND RELAY OUTPUT..................................................................................................19
1. RS-232 OR SERIAL PRINTER OUTPUT............................................................................19
(1) RS-232 (25 Pin ‘D’ type) Pin Description.......................................................................19
(2) RS-232 Interface Format...............................................................................................19
(3) Data Format...................................................................................................................20
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2. RELAY OUTPUT.................................................................................................................23
(1) Relay Output..................................................................................................................23
(2) Relay Pin Description....................................................................................................23
(3) Connection Illustration...................................................................................................23
(4) Power Source Illustration...............................................................................................24
(5) Connection Setting........................................................................................................24
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BEFORE USING THE SCALE
To enable you to use this scale correctly, we suggest that you read this manual carefully.
1. Do not use scale in areas with excessive water and don’t spray the scale or indicator with
water when cleaning. Remove all water from the scale and indicator with a clean dry cloth.
2. The load placed on the platform must not exceed the maximum weighing capacity of the
scale.
3. Keep the scale away from high temperatures and damp conditions.
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 moisture build up.
5. If the scale is not going to be used for some time, the internal rechargeable battery should
be recharged every three months.
6. Before using the scale after a long period of storage, please ensure that the internal battery
is fully charged. NOTE: Care should be taken not to leave the internal battery on charge
for too long, as this may decrease the life of battery.
PREPARING TO USE THE SCALE
1. Locate the scale on a firm level surface free from vibrations for accurate weight readings.
2. Adjust the four levelling feet to set the scale platform level using the spirit level bubble
located on the scale platform frame.
3. Avoid operating the scale in direct sunlight or drafts of any kind.
4. Remove any weight that might be on the scale platform before the scale is switched on.
5. Once the scale has been switched on, it will go through a LCD display test and then re-zero
to be ready for use.
6. The scale requires 15~20 minutes warm up before operation to ensure best accuracy.
7. Please note when the symbol is shown on the display, the internal battery needs to
be recharged.
8. All goods weighed should be placed in the centre of the platform for accurate weighing.
The footprint of the goods being weighed should not overhang the edges of the platform.
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INTRODUCTION
1. FEATURES
1. Dual-weighing units: Kilogram (kg) and pound (lb).
2. Multi-function operation: Full range tare; Pre-tare; Hold function; Net / Gross weight
display; Simple counting; Preset weight value and quantity value; Adjustable noise filter
setting from 01 ~ 15 (³15,000 division configuration only); Check-weighing configuration.
3. User-friendly design:
¨ Auto calibration
¨ AC / DC power supply
¨ Large LCD display with built-in backlight
¨ Auto power-off design to ensure the performance stability
¨ Double over-load protection
4. Variable calibration settings depending on the different calibration division:
¨ Standard division (under 10,000 internal resolution): Capacity and weight calibrations
are available for accurate weighing.
¨ High precision division (over 10,000 to 150,000 internal resolution): Linearity, capacity,
and weight calibrations are available for accurate weighing.
5. Options
¨ RS-232 interface
¨ Relay output
6. High performance in A/D converter (weighing indicators)
¨ Input sensitivity: 0.3 µ V/D
¨ Sample speed up to 16 times / second
¨ Non-linearity: 0.01 % of full scale
¨ Input zero range: -1 mv ~ +5 mv
¨ Input signal range: –1 mv ~ +14 mv
¨ Load cell excitation: 5V DC ± 5% 100mA
¨ Load cell drive capacity: up to 4 350 Ω load cells
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10°C ~ 40°C (14°F ~ 104°F)
2. SPECIFICATIONS
The available capacities for selection are different and depend on various models:
Capacity Division
3 kg (6 lb) 0.2 g (0.0005 lb)
6 kg (12 lb) 0.2 g (0.0005 lb)
7.5 kg (15 lb) 0.5 g (0.001 lb)
15 kg (30 lb) 1 g (0.002 lb)
30 kg (60 lb) 2 g (0.005 lb)
75 kg (60 lb) 5 g (0.01 lb)
150 kg (150 lb) 10 g (0.02 lb)
300 kg (600 lb) 20 g (0.05 lb)
600 kg (1200 lb) 50 g (0.1 lb)
Operating Temperature: 0°C ~ 40°C (32°F ~ 104°F) OIML: -
Power Source: AC 110V/220V (±10%) + DC 6V/4.5AH Rechargeable Battery
Display: LCD, 6 digits, 25 mm (Height), EL backlight
3. POWER CONSUMPTION
1. The power consumption is around DC 20 mA (system + load cell), the rechargeable battery
can be used up to 200 hours.
2. The power consumption is around DC 67 mA (system + load cell + backlight), the
rechargeable battery can be used for 60 hours approximately.
3. The power consumption is around DC 71 mA (system + load cell + backlight + RS-232), the
rechargeable battery can only be used for 56 hours approximately.
4. LOW BATTERY WARNING
Please note when the symbol is shown on the display, the internal battery needs to be
recharged.
v The scale will power off automatically without recharging after the low battery symbol
shows upon for 20 to 30 hours (3 to 5 hours if the backlight is active) on the display. As a
recommendation, the scale must be fully recharged before operating the scale again.
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LCD DISPLAY SYMBOLS
HIGH : Preset High Limit Weight Value
OK : The range between Low & High Limit Weight Value
LOW : Preset Low Limit Weight Value
kg : “kg” unit
3
lb : “lb” unit
Pcs : “COUNTING” mode indicating the number of pieces
à0ß : “ZERO” indication and platform stable confirmation
Net : “Net Weight ”indication
: “Low Battery” indication
61 : (STABLE) “Stable” indication
62 : ( PT) “Pre-set Tare” mode
63 : (M+) “Accumulation” mode
.
. .
64 : ( ) “Sample Too Small” indication
65 : ( ) “Piece Weight Too Small” indication
. . .
. . . .
Pcs
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