Salter Brecknell B 120 User manual

p/n AWT35-500140 Issue AB July 2007
MODEL B 120
Counting Scale
User Manual

B120_u_AWT35-500140.book
Warnings
Safe Installation
Pluggable equipment must be installed near an easily accessible socket
outlet.
The socket outlet must provide a protective earth contact and the electrical
supply to the outlet must provide over current protection of an appropriate
rating.
Permanently protected equipment must have a readily accessible disconnect
device incorporated in the fixed wiring.
The fixed wiring must provide a protective earth connection and the supply
must incorporate over current protection of an appropriate rating.
USA
If the scale is connected to a 240V supply, the receptacle must be protected
by a 15 amp circuit breaker.
This equipment is intended for use in dry conditions.
For your protection, all mains (110V or 240V) equipment used out of
doors or in wet or damp conditions should have adequate
environmental protection.
We recommend:
• a correctly fused source protected by an approved outlet/connector that
complies with local legislation (BS7071 or BS7288 in the UK).
• or an RCD protected supply to BS EN 61008 or BS EN 61009 (UK & Europe)
IF IN DOUBT, SEEK ADVICE FROM A QUALIFIED ELECTRICIAN.
A copy of the original signed declaration for this instrument is available from
the UK address at the end of this book.
Declaration of Conformity
Manufacturer Salter Brecknell
Type B120
Corresponds to the requirements of the following EC directives:-
Electro Magnetic Compatibility
Low Voltage Directive: EMC 89/336/EEC LVD 73/23/EEC
The application harmonised
standards are: EN60950-1: 2002, EN61000-6-1: 2001 EN61000-6-3: 2001

1
1.0 Introduction and General Information
Thank you for purchasing the Model B 120 counting scale. Please read all
operating instructions carefully before using and note the following items:
• Unpack the scale and install the battery if it was not factory installed. Plug
the charging unit into a properly grounded outlet. The charging plug fits
into a receptacle on the bottom of the scale, in the left rear corner.
Charge the battery for a full 12 hours before using the scale. Battery life
when fully charged is approximately 20 hours.
• Place the scale on a stable, level surface.
• Level the scale using the adjustable feet and the bubble level at the lower
left of the front panel. Tighten the locking ring on each foot once the scale
is level.
• Apply power to the scale by moving the power switch, located on the
bottom of the scale, to the ON position.
• The Low Batt annunciator will light when the battery voltage gets low. If
voltage drops too low for operation, a beeper will sound for two minutes
before the scale automatically shuts off.
• The scale battery will charge while operating on AC power.
2.0 Battery Installation
Follow these steps if you need to install the battery.
Remove the screw holding the battery compartment lid on the bottom of the
scale.

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Connect the red wire to the red battery terminal and the black wire to the black
battery terminal.
Place battery in the compartment with the padding placed as shown and
replace the battery cover and tighten the screw.
Note: To improve battery life, turn off the scale using the power switch.

3
3.0 Front Panel
The front panel, shown in Figure 1, consists of three display windows
(WEIGHT, PIECE WEIGHT, and COUNT), the keypad, nine annunciators and
the bubble level window.
Figure 1: B120 front panel
Annunciators
Annunciators are bright LEDs next to symbols or text. They appear below the
three displays and each is explained below.
Under the WEIGHT display:
Zero This lights when the weight on the scale is at 0.
Tare This lights when a tare is in effect. Weight displayed is net weight.
kg This lights when the unit of measure in the WEIGHT display is
kilograms.
lb This lights when the unit of measure in the WEIGHT display is
pounds.
Under the PIECE WEIGHT display:
gThis lights when the PIECE WEIGHT unit of measure is grams.
lb This lights when the PIECE WEIGHT unit of measure is pounds.
Under the COUNT display:
Low Batt This lights when the battery power is low. Recharge the battery or
use AC power to continue using the scale.
AC This lights when the AC power is connected to the scale.
CHG This lights when the battery is charging.

4
Key Functions
Each of the keys shown in Figure 2is explained below.
Figure 2: B 120 keypad
0-9 Used for keyboard entry of piece weight, sample size, and upper
and lower limit settings.
Units lb/kg Used to switch displayed weights between kg and lb, and piece
weight units between grams and decimal pounds.
Zero Return displayed weights and counts to zero for accurate
weighing and counting. Zero range capability is 5% of scale
capacity.
Enter Used to confirm or save entered data from keyboard.
Tare Used to zero off, up to 100% of capacity, an empty container or
weight, not required in the calculation of anaverage piece weight.
Use of tare will reduce the scale’s maximum weight capacity, by
the tare value stored.
Accu + Used to add the displayed counts to a piece count accumulator
(Memory +) and only accumulate when there is a percentage of
weight change.
Clear Erase a keyed in value from the display if an error has been
made.
Pcwt (stands for Piece Weight) Used for keyboard entry of a known
average piece weight.
Upper Used to set an upper limit quantity for count check feature.
Lower Used to set lower limit quantity for count check feature.
On/Off Used to turn off display for extended battery life or to reset the
scale to normal weighing mode.

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4.0 Scale Operation
This section covers the various scale operations, such as weighing, counting,
accumulation, etc.
Simple Weighing
1. Turn the scale on and zero the display, if necessary, by pressing the Zero
key. Be sure the scale is displaying weight in your preferred unit of
measure. Change it using the Units key, if necessary.
2. Place item(s) to be weighed on the scale…
Weight of the item(s) is displayed in the WEIGHT window.
3. Remove the item(s) from the scale and repeat steps 1-3 to weigh the
next item(s).
Tare Weighing
If you want to do net weighing, such as weighing objects in a container, follow
these steps:
1. Turn the scale on and zero the display, if necessary, by pressing the Zero
key. Be sure the scale is displaying weight in your preferred unit of
measure. Change it using the Units key, if necessary.
2. Place the item to be tared (usually a container) on the scale…
Weight of the item is displayed in the WEIGHT window.
3. Press the Tare key…
The weight is tared, 0weight is displayed and the Tare annunciator
lights.
4. Place item(s) to be weighed on the scale…
Net weight of the item(s) is displayed.
5. To remove a tare, remove everything from the scale platform and press
the Tare key…
0 weight is displayed and the Tare annunciator light turns off. The unit
is now in gross weighing mode.
6. Repeat the steps above for other tare weighments.

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General Counting Information
If there is no piece weight, the scale will not go into count mode.
Once a piece weight is established, itremains active until another piece weight
is automatically calculated by a sampling process.
After counting items, remove them and thedisplay should returnto zero. If not,
press the ZERO key.
A counting scale needs a minimum amount of weight to calculate counts with
accuracy. Salter Brecknell recommends the sample weight be a minimum of
0.1% of scale capacity. The sample weight is the total weight of your sample
items. The table below shows the minimum sample weights recommended to
guarantee the most accurate counts.
After entering the number of samples and pressing the Enter key, the count
window displays the number entered. If the piece weight window shows SPL
PCS, press the CLEAR key, and increase your sample weight.
Counting by Sampling
Follow these steps to count items using the sampling method.
For count accuracy all items should be uniform in weight. Errors in count will
occur if parts vary in weight.
1. Turn the scale on and zero the display, if necessary, using the Zero key.
Be sure the scale is displaying weight in your preferred unit of measure.
Change it using the Units key, if necessary.
2. Place a known number of objects on the scale. This is the sample
weight the scale will use to calculate a piece weight…
Weight of the items is displayed in the WEIGHT window.
3. Key in the number of objects you placed on the scale…
SPL.PCS is displayed in the PIECE WEIGHT window and the number
you keyed in is displayed in the COUNT window.
Minimum Sample Weight
Scale Capacity LB Grams
6 kg/12 lb 0.02 6
15 kg / 30 lb 0.05 15
30 kg / 60 lb 0.1 30

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4. Press the Enter key to accept the keyed in number. (If you make an
error in keying in the number, press the Clear key to clear the count in
the COUNT window and re-key the correct number.)…
The scale calculates the weight of each piece (the piece weight) and
displays the count in the COUNT window.
5. Place the items to be counted on the scale…
The total weight, piece weight and count of the items will be shown in
the three display windows respectively.
6. Remove the items from the scale and repeat steps 5 and 6 to count
items of the same piece weight.
7. Repeat steps 1-6 to count items of a different piece weight.
Note: Piece weight is displayed in grams/decimal grams or LB/decimal
pounds.
Note: The original piece weight will be held in memory until a new piece
weight has been determined. Turn the scale off, then on to return to normal
weighing mode.
Counting by Entering a Known Piece Weight
You can enter a known piece weight and begin counting without sampling.
This can also be used with the tarefunction active. After you have setthepiece
weight, place the item to be tared on the scale, press the Tare key and
continue with counting as described below.
Follow these steps:
1. Turn the scale on and zero the display, if necessary, using the Zero key.
Be sure the scale is displaying weight in your preferred unit of measure.
Change it using the Units key, if necessary.
2. Press the Pcwt key…
PC.t is displayed in the COUNT window and zeroes are displayed in
the WEIGHT and PIECE WEIGHT windows.
3. There is a decimal point already in the PIECE WEIGHT window. Key in
the known piece weight, in decimal pound or grams, using the numeric
keypad so that the piece weight in the PIECE WEIGHT window is
correct, then press the Enter key to accept this piece weight. (If you
make an error in keying in the number, press the Clear key to clear the
number and re-key the correct number.)
The counting mode activates using the entered piece weight.

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4. Place the items to be counted on the scale…
The total weight, piece weight and count of the items will be shown in
the three display windows respectively.
5. Remove the items from the scale and repeat steps 4 and 5 to count
items of the same piece weight.
6. Repeat steps 2-5 to count items of a different piece weight.
Counting can also be done while using a tare. After you have set the piece
weight (step 3), place the item tobe tared on the scale, press the Tare key and
continue with counting as described in step 4.
Counting Using Upper and Lower Count Limits
You can do counting with an alert system to tell you when you have an
acceptable number of items on the scale. This can be handy when you want to
repeatedly fill bags to the same count. Use the instructions below to set an
upper count limit and a lower count limit. When your counts fall between these
numbers (inclusive) a beeper sounds to let you know you’ve hit your target
number.
1. Turn the scale on and zero the display, if necessary, using the Zero key.
Be sure the scale is displaying weight in your preferred unit of measure.
Change it using the Units key, if necessary.
2. Use sampling or entering a known piece weight to set the piece weight.
3. Press the Upper key…
uP. PCS is shown in the PIECE WEIGHT window and a number
appears in the COUNT window.
4. Press the Clear key to clear the number from the COUNT window. Key
in the upper acceptable count of items. (You can set the upper and
lower limit to the same number to have the alert beeper sound just
on that count.) Press the Enter key to accept this number…
5. Press the Lower key…
Lo. PCS is shown in the PIECE WEIGHT window and a number
appears in the COUNT window.
6. Press the Clear key to clear the number from the COUNT window. Key
in the lower acceptable count of items. (You can set the upper and
lower limit to the same number to have the alert beeper sound just
on that count.) Press the Enter key to accept this number…
The scale returns to count mode.
7. Place items to be counted on the scale until you hear the alert beeper…
The count will be within the upper and lower limits you have set.

9
8. Remove the items from the scale and repeat steps 7 and 8 to weigh the
next batch of items.
Counting with upper and lower limits can be done while using a tare. After you
have set the piece weight (step 2), place the item to be tared on the scale,
press the Tare key and continue with counting as described in step 3.
Note: Upper and lower limits will remain in memory until you reset the limits to
0, by repeating steps 3-6.
Accumulating Counts
The scale can accumulate the counts from different weighments into a total
value stored in memory. Follow these steps to perform accumulations.
1. Follow the different counting methods described in Scale Operation on
page 5 to count items placed on the scale.
2. When the count is displayed, press the Accu+ key to accumulate the
count to memory…
The count is added into memory, and temporarily, Add is displayed in
the WEIGHT window, the number of accumulations is displayed in
the PIECE WEIGHT window and the accumulated count is shown in
the COUNT window. The display automatically returns to the normal
counting mode.
3. Remove the items, allow the scale to return to zero weight and count,
and repeat the process of putting items on the scale and pressing the
Accu+ key to accumulate the counts…
The total of accumulated counts is shown in the COUNT window.
4. To clear the accumulator, press Accu+ key, then the Clear key while the
accumulated data is displayed…
Memory is cleared of the accumulated data and the scale returns to
normal counting mode.
Note: To view the accumulator data, remove all weight from the scale and
press Accu+. The data is temporarily displayed before returning to count
mode.

10
5. The scale will not accumulate more than 999,999 times, or show an
accumulated quantity over 16,777,215. If this occurs the display will
show ------. This means over range.
When the accumulated quantity is more than the six digit display can
show (999999), it will be displayed by alternately flashing the first four
digits H XXXX) then the second four digits (L XXXX). The Hstands for
High order numbers and the Lfor low order numbers.
For example: When the accumulated quantity is 12,345,678, the
COUNT window will alternately flash H 1234 and L 5678.
Note: Remove the counted items from the scale and let the scale return to
stable condition before you can count more items and perform a successful
accumulation again.
5.0 Calibration
You should periodically calibrate your scale to ensure accuracy. Follow these
steps to calibrate the scale.
Note: Use of certified calibration weights is recommended for proper
calibration.
Set the calibration switch to the ON position for calibrating. The switch is
located on the bottom of the scale in a round depression in the base.
Push the slide switch, shown in Figure 3, to the position shown for calibration
mode.
Figure 3: Calibration switch

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Access to the calibration switch may be sealed with a lead-wire combination
on the bottom of the scale. Prior to removing the lead seal, check to see if the
test switch is in the correct position by following step 1 below. If you are not
allowed access, remove the lead-wire seal.
Note: You can exit the calibration procedure at any time by pressing the On/
Off key.
1. To enter calibration mode, while in normal weighing mode, hold the Zero
and On/Off keys at the same time until…
The scale beeps and, if the calibration switch is in the ON position,
the WEIGHT window shows CAL. oN. If the display shows CAL.oFF,
change the calibration switch position. See Figure 3.
The PIECE WEIGHT window shows Unit. 1 or Unit. 0. If Unit. 1 is
displayed, the calibration unit of measure is pounds. If Unit. 0 is
displayed, the calibration unit of measure is kilograms.
2. Press the Units key to toggle between pounds and kilograms. When the
unit you want is displayed, press the Enter key to accept it…
The scale beeps and unLoAd is displayed in the PIECE WEIGHT
window. A number representing raw A to D counts is displayed in the
COUNT window.
3. Remove all weight from the scale, wait for the scale to be stable (the
Unit annunciator stops flashing) and press the Enter key to capture the
zero point…
If the scale successfully captures the zero point, the scale beeps and
LoAd is displayed in the PIECE WEIGHT window.
4. Load a test weight that is between 25% and 100% of full capacity onto
the center of the weight platter, wait for the scale to be stable (the Unit
annunciator stops flashing) and press the Enter key to capture the
span.
When the scale captures the span, InP. Ld is displayed in the PIECE
WEIGHT window and 0.000 is displayed in the COUNT window. InP.
Ld stands for input load weight.
5. Remove the weight from the scale and key in the amount of weight you
used. The weight entered will display in the count window. Press the
Enter key…
When the scale records this weight, unLoAd is displayed in the
PIECE WEIGHT window.

12
6. Press the Enter key to confirm the zero point again.
The scale goes through the start up routine and ends in normal
weighing mode.
If there is any error in the calibration, the scale will show CAL. Err.
The scale will try to return to the previous step.
7. If you have problems, press the On/Off key to exit the calibration mode
and try the procedure again.
8. Move the calibration switch back to normal weighing mode.
6.0 View Voltage and A/D Counts
You can view the battery voltage and A to D counts for diagnostic purposes.
Follow these steps:
1. With the calibration switch in the normal weighing mode and the scale in
normal mode, press and hold the On/Off and Tare keys at the same time
until the scale beeps…
Vol. X.X is displayed in the WEIGHT window, the word codE is
displayed in the PIECE WEIGHT window and the A to D counts
(code) is displayed in the COUNT window.
Vol. stands for voltage and X.X is the current voltage of the battery. If
no battery is installed or the connection is not complete, Vol. 7.2 will
be displayed.
When the current working voltage is lower than 5.7V, the Low Batt
annunciator will light.
When the voltage is lower than 5.5V, the Low Batt annunciator will
light and the beeper will sound for approximately two minutes before
the scale turns itself off.
The A to D counts for an empty scale should be between 5000 and
100,000. This should be a positive number. The A to D counts for a
scale at full capacity should be above 300,000. If the A to D counts
are outside of these ranges or calibration and normal weighing
cannot be done, your scale’s loadcell has been permanently
damaged.
2. To exit this mode, press the On/Off key…
The scale returns to normal mode.

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7.0 Setting the Auto-Off Timer
You can set an auto-off timer so that the scale will power down automatically
after aperiod of inactivity.Thisfunctions onlywhen the scale is powered by the
battery.
1. From normal mode, press and hold the On/Off and Accu keys at the
same time until the scale beeps…
SEtUP is displayed in the WEIGHT window, A.oFF.t is displayed in
the PIECE WEIGHT window and the current value for the auto-off
timer is displayed in the COUNT window. You can choose from 0 to
30 minutes. If you pick 0, auto-off is disabled and the scale will not
power down automatically.
2. Key in the number of minutes of scale inactivity that will trigger the auto-
off function and press the Enter key to accept this value…
The scale returns to normal mode.
8.0 Setting LED Brightness
You can set the LED brightness by following these instructions:
1. In normal weighing mode, hold the ON/OFF and ENTER keys at the
same time until
SETUP is displayed in the WEIGHT window, Led.brn (LEd
brightness) is displayed in the PIECE WEIGHT window, and x(x=1-3)
is displayed in the COUNT window. This means that the LED
brightness is currently set to x.
2. Press the 1 2 or 3 numerical key to change the brightness level. Three
is the brightest level. When the brightness you want is displayed, press
the ENTER key save this setting.
The scale will auto-reset and return to normal weighing mode.

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9.0 Displayed Messages
¯ ¯ ¯ ¯ ¯ ¯ Scale overloaded
- - - - - - Too many accumulations or accumulated counts too high
_ _ _ _ _ _ Weight signal is too small
0¯ ¯ ¯ ¯ ¯ The zero point is too high
0_ _ _ _ _ The zero point is too low
EEP.Er0 The EEPROM can’t be accessed
EEP.Er1 The parameters in EEPROM are not same with backup data
EEP.Er2 The setting parameter(s) is not in normal range, or the parameter
has not been set
CAL.Err There is an error in calibration: maybe the loaded weight is too
small or the input weight is not correct.
Ad¯ ¯ ¯ ¯ Input signal of ADC is over max. range
Ad _ _ _ _ Input signal of ADC is below min. range;
CAP Displaying data relating to capacity
UoL Displaying data relating to voltage
Add The accumulated data
PC.t: Data about piece weight
SPL.PCS Data about sample pieces
uP.PCS Data about upper limit pieces
Lo.PCS Data about lower limit pieces
unLoAd Unload weight on the platter
InP.Ld Input loaded weight’s number
CAL.oN Calibration enable switch is ON
CAL.oFF Calibration enable switch is OFF

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10.0 Specifications
Power supply
a). 12VDC 500mA output, with positive center, AC adapter
b). 6V4A rechargeable lead-acid battery
Average working current:
120mA when LED’s brightness is set to 1
200mA when LED’s brightness is set to 2(default)
300mA when LED’s brightness is set to 3
Note: The LED life is shortened when set to level 3.
Note: The rechargeable battery is fully charged after 12 hours and the scale can work
continuously for approximately 20 hours. Once voltage drops below 5.7V, the Low Batt
annunciator lights. Once the voltage drops below 5.5V, the scale beeper will sound and
work for approximately two minutes before powering off.
When the scale is powered by the AC adapter, the AC annunciator will turn on.
When the battery is charging, the CHG annunciator lamp will be on.
Model B120
Capacity 6kg/12lb 15kg/30lb 30kg/60lb
Display
Resolution 6kg x 0.001kg 12lb x 0.002lb 15kg x 0.002kg 30lb x 0.005lb 30kg x 0.005kg
60lb x 0.010lb
Max. Display
Weight 6.009kg/ 13.248lb 15.018kg/33.110lb 30.045kg/ 66.240lb
TARE Range 0-100% of full scale capacity
ZERO Range Power on:calibration zero point±10% of full scale
capacity;
Zero key:power on zero point±5% of full scale capacity
Count Display
Range 0-16777216
Conversion
factors
usedforKgand
Lb
1Lb=0.45359237kg or 1Kg=2.20462262Lb

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UK and EUROPE
Salter Brecknell Weighing
P.O, Box 9533
Smethwick
West Midlands
B66 2TE
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web Site: www.averyweigh-tronix.com
USA
Salter Brecknell Weighing Products USA
1000 Armstrong Drive
Fairmont, MN 56031
Toll free: 800-637-0529 Tel: [phone] Fax: [phone]
Email: [e-mail]
www.salterbrecknell.com