Hengx HXB series User manual

PRECISION BALANCE
USER’S MANUAL
MODEL-X 2007-V2.0

Precision Balance
- 1 -
Contents
Fixing the Weighing Pan
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2
Protection Device Disassembly Steps
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2
Precautions
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2
Descriptions of Keys
-----------------------------------------------
2
Functional Operation of Keys
-----------------------------------------------
3
Panel Illustration
-----------------------------------------------
3
Single Point Calibration of Weight
-----------------------------------------------
4
Single Point Calibration of Weight when
Power on
-----------------------------------------------
5
Linearity Calibration of Weight
-----------------------------------------------
6
Parameter Setting
-----------------------------------------------
7
Parameter Functional Description
-----------------------------------------------
8
Units Conversion Table
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10
Cross-reference Table of Full Loads
-----------------------------------------------
10
RS-232 Serial Interface
-----------------------------------------------
11

Precision Balance
- 2 -
Weighing Pan Fixing Steps
1. When installing the weighing
pan, tighten the fixing screw in
the centre of the plastic weighing
pan.
2. Unscrew and remove the
shipping protection screw on the
side of the scale.
3. After removing the shipping
protection screw on the side of
the scale, fasten the shipping
protection buckle.
Protection Device Disassembly Steps
1. In the upright position, locate the shipping protection screw device on the left side of the scale.
2. Before using the scale, unscrew counterclockwise and remove the shipping protection screw.
3. Before transporting the scale, hold the shipping protection screw down inwards and tighten it
clockwise.
Precautions
1. Please pay attention to the environment when performing weight calibration on the scale.
Avoid wind blow and vibration.
2. Use of wrong batteries or wrong wiring may cause danger.
Descriptions of Keys
ON/OFF：
Power switch (on the left rear side of the scale when it’s in the upright position).
The zero key for resetting the equipment, functional only when weight is within 4%
of the weighing capacity.
The tare key for deducting the weight of container on the weighing pan.
The weighing function switching key to select weighing, counting and percentage
modes in turn.
Weighing units switching key
In the weighing mode, the key is for switching on/off backlight; in the counting and
percentage modes, the key is for sampling, by pressing which constantly, you may
select sample size of 20, 50, 100, 200 or 500 in turn.
Calibration function key.

Precision Balance
- 3 -
Functional Operation of Keys
Weighing:
Press「ON/OFF 」key, the screen will have full display and start counting down. When the screen displays
, you can start weighing. If you need backlight, press key.
Counting:
Press key, the screen will show , then press key, and the screen will show
.You may select sample size of 20, 50, 100, 200 or 500 in turn by pressing in succession.
After selection, put the sample on the weighing pan and start counting operation when you hear a beep sound.
(Automatic averaging function is provided for simple counting)
Percentage:
Press key, the screen will show , then press key, and the screen will show
. You may select sample size of 20, 50, 100, 200 or 500 in turn by pressing in
succession. After selection, put the sample on the weighing pan and start using the percentage function when you hear a
beep sound.
Notes: 1. Min. unit weight of sample >=1 d (e.g.: unit weight of sample of 300g is at least bigger than 0.01g)
2. When weight is unstable, the indicator will go off.
3. After warming up the machine, the indicator will go off.
Panel Illustration
1
gradienter
7
Tare key
2
Warming up indicator
8
Zero key
3
Calibration function key
9
Weight display window
4
Sampling/Backlight key
10
Weighing unit
5
Weighing function switch key
11
Specification
6
Unit switch key

Precision Balance
- 4 -
Single Point Calibration of Weight
Steps
Operation
Display
Step I
Power off while holding down key, and then press
「ON/OFF」to switch on the scale.
Step II
Press key
Step III
Press key to start zero point calibration. Make sure there
is nothing on the weighing pan.
Step IV
Please place weights of equivalent weight onto the pan
Place 1/3 of load
Place 2/3 of load
Place full load
Wait for a beep sound
Step V
Press key, then press key
Step VI
After countdown, the single point calibration is completed and
the scale returns to the normal weighing mode.

Precision Balance
- 5 -
Single Point Calibration of Weight when Power on
Steps
Operation
Display
Step I
Hold down key
Step II
Then press key to start zero point calibration. Make sure
there is nothing on the weighing pan.
Step III
Please place weights of equivalent weight onto the pan
Place 1/3 of load
Place 2/3 of load
Place full load
Wait for a beep sound
Step IV
Press key

Precision Balance
- 6 -
Linearity Calibration of Weight
Step I
Power off while holding down keys, and then press
「ON/OFF」to switch on the scale.
Step II
Clear the weighing pan, then press key, (zero point
calibration)
Step III
Wait for a beep sound
Step IV
Place 1/3 of load on the weighing pan and press to
perform 1/3 load calibration. Wait for a beep sound.
Step V
Place 2/3 of load on the weighing pan and press to
perform 2/3 load calibration. Wait for a beep sound.
Step VI
Place full load on the weighing pan and press to perform
full load calibration. Wait for a beep sound.
Step VII
Clear the weighing pan, then press key
Step
VIII
After countdown, the linearity calibration is completed and the
scale returns to the normal weighing mode.

Precision Balance
- 7 -
Parameter Setting
Hold down key, then press「ON/OFF」key to enter the setting mode. The screen will show
:
key: To switch functions; key: To enter or exit function setting selection; key: To end setting.
LCD Display
Function
Selection
Selection
Page
key:
key:
key:
Internal value
display
Item 1,
Page
Single point
auto calibration
Page 4
Weight unit
selection
g, ct, lb, oz, ozt
g, ct, lb, GN, dwt
g, ct, lb, ozt, tl.j
g, ct, lb, oz, tl.T
g, ct, lb, g/m2, oz/yd2
g, ct, lb, XX, XX
For application in Europe, America and China
For application in Britain
For application in Hong Kong
For application in Taiwan
For plaiting purpose
For other purposes
ON/OFF
Item 2,
Page 8
Initial weight
unit selection
g, ct, lb, oz, dr, GN, ozt, dwt, MM, tl.j, tl.T, tl.H, t, oz/yd2, g/m2
Setting according to the specific applications in various regions
Item 3,
Page 8
transfers rate
selection
9600
Item 4,
Page 8
Auto zero
range selection
d0/1/2/3/4/5
Item 5,
Page 9
filter selection
Fil1/2/4/8
Item 6,
Page 9
Backlight
selection
onoFF/oFF/ON
Item 7,
Page 9
Printing mode
selection
Pr-St/Co
Item 8,
Page 9
External device
PC（computer）/ SH-24(matrix printer)/
large screen
Item 9,
Page 9

Precision Balance
- 8 -
Display range
Zero0/1/2/3/4/5
Item 10,
Page 10
Parameter Function Description
1. When the screen shows press the key, the current internal value will be
displayed. Press key to return to the display 。
2. When the screen shows , press key to enter into unit selection mode, the screen
will show or , “on”means to use the current unit displayed,
“oFF”means not to use the current unit displayed. Press to switch between ON and OFF [to use the unit
displayed select “on”, if you do not require the unit displayed select “oFF”]. Press to select from 5 kinds of
weighing units, after selecting the unit required, press to return to the display 。
3. When the screen shows , press to enter initial unit selection mode. LCD display
means the initial unit is g, press to switch the unit required, then Press key
to return to the display 。
4. When the screen shows , press to enter the RS-232 transfers Rate selection. LCD
display represents the RS-232 transfers rate. Press key to return to the display
。 『 9600 』

Precision Balance
- 9 -
5. When the screen shows , press to enter auto zero range selection. LCD display
represents the auto zero range. Press to select the desired auto zero range,
then press to return to the display . 『 d0 、 1 、 2 、 3 、 4 、 5 』 (The higher the value
is, the wider auto zero range is.)
6. When the screen shows , press to enter filetr setting mode. LCD display
means the filter lever. Press to select the desired filter level and press key
to return to the display . 『 FiL1 、 2 、 4 、 8 』 (The higher the value is, the higher the filter level
is.)
7. When the screen shows , press to enter backlight setting mode. The screen shows
. onoFF represents the auto backlight setting. Press to select the desired backlight
setting and press key to return to the display . 『 onoFF- means auto-backlight,
oFF-means backlight off, ON-means backlight on 』
8. When the screen shows , press to enter printing mode selection. LCD display
represents the printing mode. Press to select the desired printing mode and press
key to return to the display . 『 Pr-Co-means continuous output, Pr-St - means
stable output 』

Precision Balance
- 10 -
9. When the screen shows , press to enter external device selection mode. LCD
display represents external device. Press to select the desired external device,
then press key to return to the display . 『 -PC-- external PC, SH-24 -external dot
matrix mini printer 』
10. When the screen shows , press to enter display range selection mode. LCD
display represents display range. Press to select the desired external device,
then press key to return to the display . 『 Zero0 、 1 、 2 、 3 、 4 、 5 』 (means weight
displayed when the weight exceeds the division)
11. Before entering function setting, press to end function setting and return to normal weighing mode. Press
the key continuously to select function setting modes.

Precision Balance
- 11 -
Units Conversion Table
1
ct
[MET.CARAT]
=0.1999694 g
1
lb
[AVORIRDUPOIS POUND]
=453.59237 g
1
oz
[AVORIRDUPOIS OUNCE]
=28.349523125 g
1
dr
[AVOIRDUPOIS DRAM]
=1.7718451 g
1
GN
[GRAIN](U.K)
=0.06479891 g
1
ozt
[TROY OUNCE]
=31.1034768 g
1
dwt
[PENNY WEIGHT]
=1.55517384 g
1
MM
[MOMME] (JPN)
=3.749996 g
1
tl.j
[HONG KONG JEWELRY TAEL]
=37.4290018 g
1
tl.T
[TAEL](TWN)
=37.49995 g
1
tl.H
[HONG KONG TAEL]
=37.799375 g
1
t
[TOLA] (INDIA)
=11.6638038 g
1
oz/yd2
=0.33898306 g
1
g/m2
=0.01 g
Cross-reference Table of Full Loads
CAP
150
300
600
1500
3000
Gram
150X0.005/002
300×0.01/0.005
600×0.02/0.01
1500×0.05/0.02
3000×0.1/0.05
Carat
750.34X0.02
1500.70X0.05
3001.36X0.1
7503.4X0.2
15007.0X0.5
Pound(Avoir)
0.33080X0.00002
0.66160X0.00005
1.323X0.0001
3.3080X0.0002
6.6160X0.0005
Ounce(Avoir)
5.2926X0.0002
10.5855X0.0005
21.171X0.001
52.926X0.002
105.855X0.005
Dram(Avoir)
84.685X0.005
169.37X0.01
338.72X0.02
846.85X0.05
1693.7X0.1
Grain
2315.5X0.1
4631.0X0.2
9262.0X0.5
23155X1
46310X2
Ounce(Troy)
4.8240X0.0002
9.6480X0.0005
19.296X0.001
48.240X0.002
96.480X0.005
Penny weight
96.480X0.005
192.96X0.01
385.92X0.02
964.80X0.05
1929.6X0.1
Momme
40.012X0.002
80.025X0.005
160.05X0.01
400.12X0.02
800.25X0.05
Tael (HK Jewelry)
4.0088X0.0002
8.0175X0.0005
16.035X0.001
40.088X0.002
80.175X0.005
Tael (Taiwan)
4.0012X0.0002
8.0025X0.0005
16.005X0.001
40.012X0.002
80.025X0.005
Tael (Hong Kong)
3.9696X0.0002
7.9390X0.0005
15.878X0.001
39.696X0.002
79.390X0.005
Tola (India)
12.865X0.0005
25.728X0.001
51.456X0.002
128.640X0.005
257.28X0.01
oz/yd2
442.49X0.01
884.99X0.01
1770.27 X0.01
g/m2
15000.5 X0.5
30000 X1
60000 X1
Note: Full Load = Capacity + (Readabilityx9)

Precision Balance
- 12 -
RS-232 Serial Interface
The 9PIN connector at the right back is a RS-232 standard interface. Pin 3 is for output, Pin 5 is for
grounding and the rest have no functions.
BAUD RATE：9600 bps DATA BIT：8PARITY BIT：N﹝NONE﹞STOP BIT：1CODE：ASCII
BIT FORMAT：
LSB MSB
0
1
2
3
4
5
6
7
START BIT DATABIT STOP BIT
DATA FORMAT：
S/U
T
G/N
W
+/-
D1
D2
D3
D4
D5
D6
U1
U2
U3
U4
U5
LF
CR
SP
SP
WEIGHT
SP
UNIT
ST：STABLE UT：UNSTABLE GW：GROSS WEIGHT SP：SPACE
NW：NET WEIGHT D1~D6：WEIGHT U1~U5：UNIT
Examples: ST GW + 150.00 g
UT NW - 80.00 ct …………..
SCALE
褞砃DSUB9
5
9
4
8
3
7
2
6
1
GND
TXD
RXD
BI-DIRECTION DSUB9

Precision Balance
- 13 -
2007/5/22