Excell PCH3 User manual

User Manual
Waterproof Counting Indicator
PCH3
© EXCELL PRECISION CO., LTD. 2016. All rights reserved worldwide.
The information contained herein is the property of EXCELL PRECISION CO., LTD. and is
supplied without liability for errors or omissions. No part may be reproduced or used except as
authorized 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 Content
Indicator Housing.........................................................................................................................3
Instruction for Use........................................................................................................................4
Preparations before Using ...........................................................................................................4
Chapter 1 Introduction..................................................................................................................6
1-1 Features.............................................................................................................................6
1-2 Power Supply.....................................................................................................................6
1-3 Display ...............................................................................................................................6
1-4 Keypad...............................................................................................................................7
1-5 Error Messages..................................................................................................................8
Chapter 2 Operation ....................................................................................................................9
2-1 Power On...........................................................................................................................9
2-2 Relatively Internal Value Display........................................................................................9
2-3 Zero Function.....................................................................................................................9
2-4 Sampling Function..............................................................................................................9
2-4-1 Unknown Unit Weight of a Weighed Object.................................................................9
2-4-2 Known Unit Weight of a Weighed Object...................................................................10
2-4-3 Under Tare Status......................................................................................................10
2-5 Tare Function Operation................................................................................................... 11
2-6 Pre-tare Function Operation.............................................................................................11
2-7 Accumulation....................................................................................................................12
2-7-1 Quantity Accumulation...............................................................................................12
2-7-2 Weight Accumulation.................................................................................................13
2-8 Quantity Preset ................................................................................................................14
2-9 Weight Preset...................................................................................................................14
2-10 Unit Weight Preset .........................................................................................................15
Chapter 3 External Calibration Setting.......................................................................................16
3-1 External Function Setting .................................................................16
3-1-1 Backlight Mode Setting ..............................................................17
3-1-2 Auto. Power-off Setting ..............................................................17
3-1-3 Stable Range Setting for Quantity Sampling .............................18
3-1-4 Auto. Average Unit Weight Setting ............................................18
3-1-5 A/D Sampling Speed Setting .....................................................19
3-1-6 Zero Display Range Setting ......................................................19
3-1-7 Zero Tracking Range Setting .....................................................20
3-1-8 Accumulation Ending Mode Setting ...........................................20

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3-1-9 Pre-tare mode setting ................................................................21
3-1-10 “Beeper” Output Setting for Quantity Limit ................................21
3-1-11 Accumulation Acceptable Condition Setting 1 .............................22
3-1-12 Accumulation Acceptable Condition Setting 2 ...........................22
3-1-13 Combination Key Setting ............................................................23
3-2 External Weight and G Value Calibration ..............................................24
3-2-1 External Weight Calibration ..............................................................25
3-2-2 Calibrate G Value Used in Local or in Verification ............................26
3-3 RS-232 and Serial Printer Setting ...................................................28
3-3-1 Baud Rate Setting ....................................................................28
3-3-2 Communication Protocol Setting ..............................................29
3-3-3 Output Data Format Setting ......................................................29
3-3-4 Output Count Setting Per-second .............................................31
3-3-5 Operation Mode Setting ............................................................31
3-3-6 Continuous Transmission Output Condition Setting .................33
3-3-7 Zero Band Setting for Auto. Transmission ................................34
3-3-8 Weight Band Setting for Auto. Transmission ............................34
Appendix 1 RS-232 Full Duplex Format.....................................................................................35
Appendix 2 Fixed Format RS-232 Transmission Line Description.............................................37
Appendix 3 ASCII Code Table....................................................................................................38
Appendix 4 7-Segment Display Characters ...............................................................................39

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Indicator Housing
Before opening the stainless steel indicator housing, make sure it is dry. If
necessary wipe the housing dry paying particular attention to the joint between the
front panel and rear housing.
The re-assembly instructions should be accurately followed to ensure the IP rating
is maintained in service.
 There are no user serviceable parts inside the indicator and all service work
should be carried out by the technical staff of your supplier.
Re-assembly Instructions
Position the front panel onto the rear housing and fit all six fixing screws finger
tight. Tighten the screws in the order shown in the diagram below to a torque of
12 kgf-cm.
Over tightening the screws could impair the IP rating.
Tightening order:
1st
2nd
3rd
4th
5th
6th

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Instruction for Use
1. The load placed on the weigh pan must NOT exceed the maximum weighing capacity of
the scale.
2. Protect the scale from high temperatures.
3. Avoid objects impacting with the scale. Do not drop loads onto the scale or subject the
weigh pan to any strong shock loads.
4. Operating temperature: -10℃~ +40℃
5. Any suggestion for the product is warmly welcome.
Preparations before Using
1. Put the scale on a firm level surface for accurate weight readings.
2. Protect the scale from direct sunlight and drafts.
3. Use a separate power socket, if possible, when re-charging the indicator.
4. For maximum stability and accuracy switch on the indicator for 15~20 minutes before
operation.
5. Once the scale has been powered on, it will go through a LCD display test and re-zero,
ready for use.
6. All goods weighed / counted should be placed in the centre of weigh pan for best accuracy.
The overall dimensions of the goods being weighed / counted should not exceed the
dimensions of the weigh pan.
7. Please note when symbol flashes on the display, the battery needs to be charged.
8. Introduction of Storage Battery
Thank you for purchasing EXCELL counting scale.
In order to operate smoothly, to last the durability
and to reduce chance of breakdown for this product,
Please read this manual carefully.

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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
Sealed to IP67, Waterproof and dust proof
Up to 1/15,000 display resolution and the internal resolution is 1/300,000 (Input voltage
should be over 7 mV)
Practical functions: Accumulations (weight and quantity), full range tare, pre-tare,
auto-average unit weight, kilogram (kg) and pound (lb) weighing modes, auto backlight
Others: Auto calibration, auto zero tracking, low battery and charging status indication
Selectable sampling speed: speed 01-15
25 key design: 10/20/50/100 pcs sampling keys included
Dimensions: 256 (W) 170 (H) 90 (D) mm
Analogy input and A/D conversion: Input sensitivity 0.23V/D or more
Input signal range: -1mV~12mV
Load cell excitation: 5V DC
1-2 Power Supply
Power Supply
Internal 6V / 4.5Ah rechargeable battery
AC 120 VAC to 9 VDC/ 1A plug top power supply
AC 230 VAC to 9 VDC/ 1A plug top power supply
Power Consumption
Approximately DC 25 mA
Approximately DC 45 mA (with Backlight)
Low Battery Warning
Please note when the symbol flashes on the display, the scale needs to be charged.
If the battery is not charged and the battery symbol flashes, the indicator will switch off
automatically after approximately 20-30 minutes of additional use.
1-3 Display
WEIGHT
UNIT WEIGHT
QUANTITY
o

.....

. . . . . .
+

......


stable

Display Column
1. WEIGHT
Total 6 digits. To display the weight on platter or the total accumulation weight; the left digit is
able to display the negative symbol.
2. UNIT WEIGHT
Total 6 digits. To display the unit weight of objects on the platter or total accumulation counts.
3. QUANTITY
Total 6 digits. To display the quantity of the objects on platter or the accumulation.

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Symbol Icons “”
1. or Net or Tare : “Tare” indication
2. oor Zero :“Zero” indication
3. + or M+ :“Accumulation” indication
4. Stable :“Stable” indication
5. :If the weight of the sample is less than the weight of the minimum sample, this symbol
will display. Please add the number of sample then sampling.
Minimum unit weight is 0.1d with resolution equal to 1/3000.
Minimum unit weight is 0.2d with resolution range from 1/6000 to 1/30000.
If symbol displays, scale may cause some counting error even if the scale can still be used.
6. :If the unit weight of the object on the platter is less than “Minimum Unit Weight”, this
symbol will display. The scale can still count the quantity even though the unit weight is
too small; however, this may affect the counting inaccuracy.
Please use the scale which the division and specification are both subject to.
If symbol displays, scale may cause some counting error even if the scale can still be used.
Brazil approval model (1/3,000 resolution)
Minimum unit weight is 0.1d (d=division)
When minimum unit weight is less than 0.1d, it will display “ - - - - - - ”and can’t be counted.
Normal non-approval and approval modal (except for Brazil approval model)
Minimum unit weight is 0.1d with resolution equal to 1/3000. (d=division)
Minimum unit weight is 0.2d with resolution range from 1/6,000 to 1/3, 0000.
7. :When the symbol displays, the battery need to be recharged for safe use.
1-4 Keypad
7
8
9
SAMPL
Q’TY
PST
4
5
6
UNIT
W.T
U.W
PST
1
2
3
Z
M+
0
.
CE
T
MC
Key Function
,~
:
Number key for setting the unit weight, quantity and etc.
:
Clear key to clear the digits on the display.
:
Unit weight key for setting the unit weight of sample.
10
20
50
100
ON/OFF

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:
Press this key, the display returns to 0.
:
Press this key to deduct the weight of container. Or shift the digit pointer to left.
:
Press this key to preset the unit weight of sample. Or use this key to enter the
setting mode.
:
Pre-setting the upper limit of count. If the calculated count is larger than the
limit, the scale sends a warning sound. Or use this key to confirm the setting.
:
Totalizing the quantity or weight.
:
Clear the stored totalizing memory. Or shift the digit pointer to right.
:
Turn on or turn off the scale.
1-5 Error Messages
zero value is too high (OMIL or NTEP ＞10% full scale)
zero value is too low (OMIL or NTEP ＜10% full scale)
Internal value ＞700,000 (use in factory calibration)
Internal value ＜100,000 (use in factory calibration)
The weight value is over 9d of the maximum capacity. (d = division)
Internal value is unstable (Unstable time is over 10 seconds after pressing
Zor Tkey)
ON/OFF

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Chapter 2 Operation
2-1 Power On
Press ON/OFF key to turn on the scale
WEIGHT
UNIT WEIGHT
QUANTITY
After stable, the scale will count back to zero.
WEIGHT
UNIT WEIGHT
QUANTITY
600 ⇒Maximum countable data: 600 000 Sampling Speed
After return to zero and being stable, scale will enter into counting mode.
2-2 Relatively Internal Value Display
After press Zkey, screen will show “ - - - - - - ”. Press CE key.
WEIGHT
UNIT WEIGHT
QUANTITY
X X X X X
X
X X X X X X
Max internal calibration SP value is 5 digits Max internal value is 7 digits.
Press 0 key to return to the counting mode.
2-3 Zero Function
While operating the scale, zero may sometimes fluctuate. (Slight weight changes happen in
weight column.) Press Zkey to return to zero.
2-4 Sampling Function
2-4-1 Unknown Unit Weight of a Weighed Object
1. Place the sampling object on platter
.
Weight on platter
2. Enter the quantity of the sample on platter
.

Weight on platter Enter the sampling quantity
The number of quantity column will flash 6 seconds. If the user doesn’t press the SMPL
key before flashing is over, the scale will complete the unit weight setting procedure
automatically after flashing. The scale will also take the number that inputted in unit weight
column as the unit weight of object to calculate the quantity of object shown in quantity column.
3. Press SMPL key while total column number is flashing
.
Weight on platter

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4. After stable, the scale finishes sampling and enters into counting mode
.
.
stable

Weight on platter Unit weight of object Enter sampling quantity
2-4-2 Known Unit Weight of a Weighed Object
1. Enter known unit weight of object intended to weigh
o

.
.

stable

Unit weight of object intended to weigh
2. Press UNIT W.T key to complete setting and enter into counting mode
o

.
.
stable

Unit weight of object intended to weigh
2-4-3 Under Tare Status
1. Take the sample off the platter
.
The weight of object on platter
2. Input the quantity of sample on the platter
.

The weight of object on platter Enter the quantity of sample
The number of quantity column will flash 6 seconds. If the user doesn’t press the SMPL
key before flashing is over, the scale will complete the unit weight setting procedure
automatically after flashing. The scale will also take the number that inputted in unit weight
column as the unit weight of object to calculate the quantity of object shown in quantity column.
3. Press SMPL key while the number of quantity is flashing
.
Weight of the object on platter
4. After stable, the scale finishes sampling and enters into counting mode
.
.
stable

Weight of the object on platter Unit weight of object quantity of sample entered
The larger quantity of sampling, the more precise unit weight counted out.
When unit weight column and total quantity column both indicate 0, please press
1UNIT W.T key, and the previous unit weight value will come out. 
Use M+ and 7 keys to decide whether to display negative weight or not. 

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2-5 Tare Function Operation
1. Place the packaging container on platter
.
Weight of packaging container
2. Press Tkey
3. The scale will enter into counting mode after stable
o

.

stable

Clear off the tare value
Mode 1: After removing the object together with packaging container, weight column will display
the negative value of packaging container. Press Tkey again to cancel the tare, and
return to zero. The tare symbol “”will disappear.
Mode 2: After removing the object together with packaging container, weight column will display
the negative value of packaging container. Press Zkey again to cancel the tare, and
return to zero. The tare symbol “”will disappear.
2-6 Pre-tare Function Operation
(Pre-tare setting) is set up as . (No weight on platter)
1. No weight on platter
o

.
stable

2. Press Tkey
o

.
stable

3. Enter the known weight of packaging container
o

.

stable

weight of packaging container entered
4. Press Tkey
.


stable

(Pre-tare setting) is set up as . (Weight on platter)
1. Object placed on platter
.
.
stable

Weight of the object on platter Unit weight of the object Quantity of the object

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2. Enter the known weight of packaging container
.
.

stable

Weight of packaging container entered
3. Press Tkey
.

.

stable

Weight of the object without container Unit weight of the object Quantity without packaging container
Pre-tare function is also available if the object has been tarred.
If the net weight on platter is more than zero weight, the tare function is available. Otherwise,
it’s not capable of tare function.
Clear off Pre-tare value
After removing the object together with packaging container, weight column will display the
negative weight value of the packaging container. Press Tkey once again to cancel the
pre-tare value and return to zero. Then the tare and pre-tare symbol “”will disappear.
Recall Pre-tare value
1. Press Q’TY PST key, and then press Tkey
.


stable

Pre-tare value
2. After displays pre-tare value about 5 seconds, it automatically returns to the weighing mode
.

.

stable

2-7 Accumulation
The accumulation counts are up to 99 counts, but the total quantity column is at most 6 digits.
Users can not do positive accumulation and negative accumulation at the same time.
2-7-1 Quantity Accumulation
1. Place an object on platter
.
.
stable

Weight of the object on platter Unit weight of the object Quantity of the object on platter
2. Press M+ key
3. After scale is stable
.
+

stable

Accumulated total weight Accumulated total counts Accumulated total quantity

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4. After about 3 seconds, scale returns to counting mode
.
.
+

stable

Weight of the object on platter Unit weight of the object Quantity of the object on platter
Recall quantity accumulation
While weight column displays 0, press M+ key to recall the accumulated data
o

.
+

stable

Accumulated total weight Accumulated total counts Accumulated total quantity
Clear off the accumulated quantity value
Press MC key to clear off the accumulated value in the memory, and then accumulation
symbol “”will disappear.
2-7-2 Weight Accumulation
1. Place an object on platter when unit weight displays 0
.
stable

Weight of the object on platter
2. Press M+ key
3. After scale is stable
.
+

stable

Accumulated total weight Accumulated total counts
4. After about 3 seconds, scale returns to weighing mode
.
+

stable

Weight of the object on platter
Recall weight accumulation value
While weight column displays 0, press M+ key to recall the accumulated data
o

.
+

stable

Accumulated total weight Accumulated total counts
Clear off the accumulated weight value
Press MC key to clear off the accumulated weight in the memory, and then the accumulation
symbol “”will disappear.

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2-8 Quantity Preset
It’s available to pre-set the upper limit of quantity in counting mode. If the counts are over the
limit, the beeper makes warning sounds, and the weight column displays flashing “
”
Upper limit of preset quantity
1. Whether there is an object on platter or not, press Q’TY PSTkey. Press SMPL key,
select “Quantity Preset”mode (Press UNIT W.Tkey to select “Weight Preset”mode)
o

stable

Previous preset value
2. Enter the upper limit intended (Press CE key to modify the value entered)
o

stable

Upper limit entered
3. Press SMPL key (Press CE key to modify the value entered)
o

stable

4. press Q’TY PSTkey, the scale return to the counting mode
o

.
stable

Clear off the pre-set upper limit
To clear the pre-set upper limit of quantity or weight, please follow the above-mentioned
operation steps. When entering the pre-set value, please enter “0”instead.
When switching to “weight preset”mode or “quantity preset”mode, previous preset value
will be deleted automatically.
2-9 Weight Preset
It’s available to pre-set the upper limit of weight. If the weights are over the limit, the beeper
makes warning sounds, and the weight column displays flashing “
”
Upper limit of preset weight
1. Whether there is an object on platter or not, press Q’TY PSTkey. Press UNIT W.T
key to select “Weight Preset”mode (Press SMPL key to select “Quantity Preset”mode)
o

.
.
stable

Previous preset value
2. Enter the upper limit intended (Press CE key to modify the value entered)
o

.
.
stable

Upper limit entered Previous preset value
3. Press UNIT W.Tkey (Press CE key to modify the value entered)
o

.
.
stable

4. press Q’TY PSTkey, the scale return to the counting mode
o

.
stable


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Clear off the pre-set upper limit
To clear the pre-set upper limit of quantity or weight, please follow the above-mentioned
operation steps. When entering the pre-set value, please enter “0”instead.
When switching to “weight preset”mode or “quantity preset”mode, previous preset value
will be deleted automatically.
2-10 Unit Weight Preset
The preset data could be saved in up to 50 addresses
Each address contains: unit weight pre-tare ID and ITEM
2-13-1 Pre-set Unit Weight Operation (Read-in)
Use number keys to enter the unit weight. (The value is 0 or blank without setting)
Press U.W. PST key
Press U.W. PST key again
Press number keys to select 1 of 50 addresses for saving the data. If it is over 50,
Please re-enter.
Press U.W. PST key
2-13-2 Pre-set Unit Weight Saving Operation (Read-out)
Press U.W. PST key again
Use number keys to enter preset group that you want. If it is over 50, Please re-enter.
Press U.W. PST key again to read-out the data you saved. If the data is blank, it shows NULL.
While read-in or read-out, if the waiting time is over 10 seconds, the scale returns to weighing
mode automatically. Press CE key to cancel the read-in and read-out.

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Chapter 3 External Calibration Setting
After starting the machine and it returns to zero, press Zkey and the screen displays
”- - - - - -“. Then press key to enter external calibration function setting mode. The weight
column displays .
3-1 External Function Setting
Press MC key
Enter parameter 00~13
After entering parameter
00, press MC key to
return to previous level
Press Tkey
Press Tkey
Press Tkey
Press Tkey
External Function Setting
External Weight Calibration
and G Value Calibration
RS-232 and Serial Printer Setting
Exit the Setting
11Exit
1CE Move cursor leftward
1T Move cursor rightward
1MC Enter
“Zero”track range
Accumulation ending mode
Pre-tare mode
”Beeper”output setting for quantity limit
Accumulation acceptable condition setting 1
Accumulation acceptable condition setting 2
Combination key Setting
Return to previous level
Backlight mode setting
Auto. power off setting
Stable range setting for
quantity sampling
Auto. unit weight average
A/D sampling speed
“Zero”display range

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Previous setting
Previous setting
11Exit
1CE Move cursor leftward
1T Move cursor rightward
1MC Enter
3-1-1 Backlight Mode Setting
Press MC key
Enter parameter 00~02
Press MC key to
save the setting
Default Setting: (No backlight)
Backlight is always on.
While weighing (weight is higher than 10d) or pressing any key, backlight be turned on
automatically. The backlight is turned off automatically when the scale is idle for 10
minutes. (d=division)
No backlight.
When turning on, the backlight mode is the same as previous setting.
3-1-2 Auto. Power-off Setting
Press MC key
Enter parameter 00~10
Press MC key to
save the setting
Default Setting:
Auto. Power-off function is off.
~ The scale to be automatically power off after the scale in not in use for 1~10
minutes. (If intended to operate continuously, please restart the scale again.)
It can be set up to 10 minutes at most.

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Previous setting
Previous setting
11Exit
1CE Move cursor leftward
1T Move cursor rightward
1MC Enter
3-1-3 Stable Range Setting for Quantity Sampling
Press MC key
Enter parameter 00~15
Press MC key to
save the setting
Default Setting:
While quantity sampling, the scale will indicate a stable reading and error is within 8d
internal value. (d=division)
The higher value makes the sampling faster, but less accurate.
The smaller value makes the sampling slower, but more accurate.
It can’t be shifted after sampling, only when the unit weight is cleared in Brazil version.
3-1-4 Auto. Average Unit Weight Setting
Press MC key
Enter parameter 00~01
Press MC key to
save the setting
Default Setting:
Auto. average unit weight function is off. (Press SMPL key for manual unit weight
calibration)
Auto. average unit weight function is on.
Condition: Auto. unit weight calibration performs when
the measured sampling number increase
greater than 10% but less than 100% of
previous sampling number.