Avery Berkel TB Series User Instructions

Contents 1 Installation 3 1.1 Changing the voltage setting 3 2 Weighing 4 3 Keyboard functions 5 3.1 Using the Dual Units key 6 3.2 Using the Tare key 6 3.3 Using the Weigh/Count key 6 3.4 Using the Print key 7 4 Calibration procedure 8 4.1 Calibrating the balance 8 4.1.1 Unsuccessful calibration 9 5 Setup procedure 10 5.1 Data send 10 5.1.1 ConfIguring data send 10 5.2 Dual weight unit 11 5.2.1 Configuring the dual weight unit 11 6 Counting 13 7 Checkweigher 15 7.1 InstallatIon 15 7.2 Calculating tolerances 15 7.3 Checkweighing 15 7.4 Checkcountlng 17 7.5 General notes 17 8 Output 18 9 Suspended weighing 18 10 Cleaning 18 11 Mains fuse 19 12 Safety precautions 20

Congratulations – you have now taken delivery of your new balance. Designed and manufactured to the highest possible standards, this balance is equally at home in the factory, laboratory or the classroom. These user instructions describe the operation of both the two key and four key balances. The features available with the four key version are clearly identified and should simply be ignored if you have purchased the two key version. TC60 Two key version 6000 x 1g Four key version 6000 x 1g TC61 Two key version 600 x 0.1g Four key version 600 x 0.1g TB151 Two key version 1500 x 0.1g Four key version 1500 x 0.1g

1 Installation 1. Place the balance in its chosen position, which should be free from vibration and draughts for optimum performance. 2. Remove any packing material. 3. Place the pan on the pan support. 4. The balance is factory set to either 110–120V or 220–240V 50/60 Hz AC supply. Ensure that the voltage on the rating plate on the rear of the balance corresponds with the supplied voltage. If not refer to section 1.1. 5. Connect the mains lead to the balance and an AC supply. 6. Turn on the mains switch which is located at the rear of the balance. The readout displays a row of dashes for a short period, then all eights, and then zero. The balance is now ready for weighing since little or no warm up time is required. 1.1 Changing the voltage setting 1. Remove the mains lead from the balance. 2. Prise out the voltage selector/fuse holder. 3. Replace the fuse with one of the correct rating. New Supply Fuse RatIng 110V – 120V 20mm, 500mA, anti–surge 220V – 240V 20mm, 250mA, anti–surge 4. Replace the voltage selector/fuse holder in the correct orientation.

2 Weighing Place the load on the pan. The weight is displayed on the readout. When the weight is stable the unit symbol appears at the right hand side of the display. If you apply a load in excess of the weighing capacity, the reading blanks and the top row of display segments illuminates until you remove the overload. If you remove the pan, the reading blanks and the bottom row of display segments illuminates.

3 Keyboard functions The functions available depend on whether your balance is the two key version or the four key version. Two key balance T g Dual units key Tare key Four key balance gg T Dual units key Weigh/count key Print key Tare key

3.1 Using the Dual Units key gg has two functions: At switch on During the power up sequence, pressing gg displays the various secondary weighing units available, see section 5.2. Normal weighing Pressing gg causes the balance to display the weight either in grams or converted to the selected secondary weighing unit. The symbol g denotes a weight in grams. Any other symbol denotes a converted weight. 3.2 Using the Tare key T tares off the weight of an empty container, for example. Place a container on the pan and press T . This causes the weight display to be zeroed. Any material now added to the container is displayed as a net weight. When you remove the container and contents the tare weight is displayed with a negative sign. The tare may be cancelled by pressing T again when the pan is empty. Loads up to full capacity may be tared but the net weighing capacity is reduced by the amount tared. 3.3 Using the Weigh/Count key is used when counting components, see section 6.

3.4 Using the Print key has two functions: At switch on Pressing enables you to configure the balance for either Continuous data send or Request data send, see section 5.1. Normal weighing If the balance is set to Request data send pressing causes the balance to display centre bars and send the information displayed to a peripheral such as a tally roll printer or PC.

4 Calibration procedure You can set the accuracy of calibration either at full load or at intermediate weight values. Use one of the following weights during calibration: TB6l TB151 TC60 200g 500g 2000g 500g 1000g 5000g 600g 1500g 6000g The weight used should ideally correspond with the operable weight. If the balance is to be used for general weighing over a wide range, select the maximum weight. 4.1 Calibrating the balance 1. Ensure that the pan is empty and the display shows zero. 2. Place the required calibration weight centrally on the pan. 3. Press and hold gg . Press T until the display shows CAL and then release both keys. The display shows CAL for a short while and then displays the value of the calibration weight used. This signifies that calibration is complete. 4. Wait until calibration is complete and then remove the weight from the pan. 5. Check that the balance is calibrated accurately by ensuring that the display shows
zero when no weight is on the pan
the correct value when a calibration weight is applied 6. If the balance is not accurately calibrated repeat from step 1.

4.1.1 Unsuccessful calibration Under certain circumstances the message ERROR may appear during the calibration process. This indicates that calibration has been unsuccessful due to one of the following reasons:
The calibration weight used was not one of the permitted nominal values.
The calibration weight used, though nominally correct, was outside the permitted tolerance.
The pan was not empty and the display did not show zero before you started.

5 Setup procedure 5.1 Data send You can send data from a four key balance either continuously or on request. You can send data from a two key balance only continuously. Continuously The balance sends data as a continuous message which is regularly updated as the weight on the balance changes. Selecting option P2 prints data automatically only when the weight is stable. Selecting option P4 prints data automatically at any time. On request The balance sends data to a peripheral such as a tally roll printer or PC when the operator presses . Selecting option P1 prints data when is pressed only if the weight is stable. Selecting option P3 prints data whenever is pressed. 5.1.1 ConfIguring data send 1. Switch on the balance. 2. Press during the power up sequence. The display shows the option currently selected. 3. Press to display the required option (P1 to P4).

4. To return to normal weighing press T . 5. To configure the gg key see section 5.2.1. 5.2 Dual weight unit The balance can display the weight in either grams or one of the secondary weighing units listed below. The units available and the relevant symbols are listed below: Option Unit Displayed symbol POUND Pounds (Imperial) Decimal lb OUNCE Ounces (Imperial) 0z TROY Troy ounces t0 PENNY Penny weight dt TAEL 1 Tael (Taiwan) t TAEL 2 Tael (Hong Kong) t TAEL 3 Tael (Singapore) t TAEL 4 Tael (China) t H–ltr Kilogram/hectolitre g/h N–TON Newtons N GRAIN Grains gr If a secondary unit is not required set the balance to NONE. 5.2.1 Configuring the dual weight unit 1. Switch on the balance. 2. Press gg during the power up sequence. The display shows the option currently selected.

3. Press gg to display the required option. 4. To return to normal weighing press T . 5. To configure data send see section 5.1.1. Configuring kilogrammes/hectolitre If H–Itr is selected as the secondary weighing unit (see section 5.2) the balance calculates kilogrammes per hectolitre. 1. Ensure you are in setup mode. 2. Press gg to display H–Itr. 3. Place a 500ml volumetric container on the pan and zero the balance. 4. Fill the container with the grain under test, using a repeatable filling method. 5. Replace the container and contents on the pan. The display shows the sample weight compared with its volume expressed as kilogrammes/hectolitre.

6 Counting You can use the balance to determine the number of identical components in a batch by first carrying out a sample weighing operation. If the balance is linked to a peripheral such as a tally roll printer you can obtain a printed record. Notes The balance will not sample if the display shows the under weight lower bars or over weight upper bars. To count a different component repeat the counting procedure. 1. Either Ensure that the pan is empty and the display shows zero. Or Place an empty container on the pan. Press T to zero the weight display. 2. Place a number of components on the balance pan. These components are called the sample size. The sample size can comprise 5 – 50 components in steps of 5. 3. Press and hold until the display shows the required sample size. The display shows SPLE followed by the sample sizes in steps of 5. This is the number of components you intend to use in the initial sample. The scrolling sequence always starts at the last selected sample size. When you release the key the display shows the sample size and a small c in the top right hand corner of the display to designate count is in operation. 4. Add further components. The display automatically increments accordingly.

5. To re–sample on a larger number of components press until the display shows SPLE. The balance recalculates the piece weight with the new weight and sample count information. Take care if the step between the two samples is too large as errors may occur. 6. To obtain a printed record press . The following information is printed: COUNT xxxx WEIGHT xxxx g PcWt x.xg 7. To return to normal weighing press briefly.

7 Checkweigher The checkweigher unit (part number 70571–644) is a simple device which indicates if the item being weighed is within two tolerances. The unit can also be used for checkcounting, see section 7.4. 7.1 Installation The unit is simple to install. Just plug the unit into the output port at the back of the balance and switch on. Note Early versions of the TC/TB series cannot be connected to the checkweigher. Before using a checkweigher with an existing TC or TB balance check the label on the rear face of the balance. The balance identity code must contain the numbers 35 or 45, for example TC060–1 35Z. 7.2 Calculating tolerances The two tolerances are called UNDER and OVER limits. The UNDER limit is the lowest acceptable number. The OVER limit is the highest acceptable number. To enter the limits you must place components on the pan until the required value is reached. Pressing T enters the value. Pressing gg clears the previously entered value. These values are stored in the balance. Example To weigh an item to
10% you must first calculate the UNDER and OVER limits. If an item weighs 100 grams the UNDER value is 90 grams and the OVER value is 110 grams. 7.3 Checkweighing 1. Switch on the balance with the checkweigher connected. The balance display shows the last stored UNDER value and a small u to the right of the display. 2. To accept the UNDER value, press T and go to step 6.

3. To change the UNDER value, press gg . The display shows zero. 4. Place components on the pan until the display shows the required UNDER value. 5. Press T . The balance display shows the last stored OVER value and a small o to the right of the display. 6. To accept the OVER value, press T . The balance is ready for use. 7. To change the OVER value, press gg . The display shows zero. 8. Place components on the pan until the display shows the required OVER value. 9. Press T . The balance is ready for use.

7.4 Checkcountlng Checkcounting enables you to use the balance for checking batches or bundles of items as normal but with the ability to update the piece weight of the components. 1. Set up the balance for counting by following steps 1. to 3. on page 13. 2. Switch off the balance. 3. Switch on the balance with the checkweigher connected. The balance display shows the last stored UNDER value and a small u to the right of the display. 4. Press gg to select count. 5. Go to page 15 and follow the instructions for checkweighing in section 7.3 from step 2. Set the UNDER and OVER limits by count and not weight. 6. With the same under and over values you can set a new piece weight by re–sampling as described in steps 1. to 3. on page 13. 7.5 General notes
You can use gg and (if fitted) when the balance is connected to the checkweigher.
RS232 output is not available when the checkweigher is connected.
Switching the balance off and on again with the checkweigher connected retains the previously entered UNDER and OVER limits.
Switching the balance off and on again with the checkweigher disconnected sets the balance to normal weighing. Previously entered limits are

retained and displayed when the checkweigher is re–connected.
The output port provides RS232 output (see section 8) if the checkweigher is disconnected. 8 Output The output from this balance is uni–directional RS232C. The output socket is at the rear of the balance and is a Plug–hole Cord Connector (PCC). PIN No. 1 2 3 4 5 6 MAIN TX OVD RX OVD +12V CTRL 1 6 1 Output connector Further information on this output configuration can be found on the RS232 applications sheet available from Avery Berkel. 9 Suspended weighing You can suspend loads beneath the balance from the suspension eye which is exposed by removing the plastic cover in the baseplate of the balance.

10 Cleaning To simplify cleaning remove the large screw in the centre of the plate and lift off the pan support plate. When replacing the plate ensure the locating peg aligns with the corresponding hole. The balance exterior and fitting may be wiped clean with a soft cloth moistened with water or a dilute soap or detergent solution. Scouring cleaners, alkali cleaning solutions such as washing soda, or solvents should not be used. 11 Mains fuse WARNING TO AVOID THE POSSIBILITY OF ELECTRIC SHOCK OR DAMAGE TO THE MACHINE, ALWAYS SWITCH OFF THE MACHINE AND ISOLATE FROM THE POWER SUPPLY BEFORE CARRYING OUT ANY ROUTINE MAINTENANCE. The mains input fuse is situated at the rear of the balance and is located behind a small plastic cover immediately beside the mains input socket. Prise out the cover with a small screwdriver or similar tool. A spare fuse is mounted in the cover. Replace as follows: Mains supply Fuse Rating 110–120V 20mm, 500mA Anti–Surge Type 220–240V 20mm, 250mA Anti–Surge Type Caution: You must use the same type of fuse. If in doubt contact your Avery Berkel centre.

12 Safety precautions Avery Berkel has made every effort in design and construction to ensure this balance is safe when used in normal conditions and circumstances. You should however still adhere to the following aspects of safe working practice.
This is an electronic product. Observe all safety precautions and practice applicable to electrically powered devices when using this balance.
When installing the balance, ensure the mains lead is not placed or does not trail where the flex could be cut or cause anyone to trip.
There are no user serviceable parts inside the balance. Any attempt to dismantle the balance could cause electric shock and also voids the warranty.
The balance is protected by an anti–surge fuse on the balance (see section 11). Disconnect the balance from the power supply before attempting to change the fuse. Ensure the replacement fuse is the correct rating.
Prolonged exposure to certain corrosive chemicals including some organic solvents could affect the appearance of the balance or possibly cause actual damage. Contact Avery Berkel for advice.
The keypad is made of an inert, tough polycarbonate material. Do not use sharp or pointed instruments which could pierce the keypad. A clear plastic window behind the display aperture helps protect the display from accidental damage.
Although the balance is covered by a full warranty against faulty components and workmanship, we recommend that you enter into a service agreement with Avery Berkel to maintain the continued good working order of the unit.
If a fault occurs with this balance do not attempt to repair or correct the fault. Contact your local Avery Berkel centre.

Avery Berkel is a trading name of GEC Avery Limited The address of your local service branch is ...