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.

2
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.

5
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.

6
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

7
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.

8
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.