fristadenlab HC Series Precision Balance User Manual

HC Series Precision Balance

User Manual

HC Series Precision Balance

fristadenlab

Important
Thank you for purchasing the Fristaden Lab Precision Balance. To ensure safe and
reliable operation, please read the user manual carefully before use and follow all
operating and safety instructions.

Safety Information

• Use only 110V power supply.

• Disconnect the balance from the power supply when installing or moving the balance.

• Do not operate the balance in environments where flammable gasses or
  vapors may be present.

• Wear appropriate personal protective equipment (PPE) when operating the
  balance.

• Do not operate the balance if it is in any type of standing liquid.

• Do not mix incompatible materials on the weighing pan.

Operating Guidelines

• Do not drop objects onto the weighing pan to avoid damaging the load cell.
• Allow the balance to warm up for 15-20 minutes before using.
• Do not exceed the maximum capacity of the balance. If OVER appears on the
  display, the balance is overloaded. Remove objects until the amount to be
  weighed is less than the maximum capacity of the balance.

Installation and Use Location

• The balance’s working environment should be between 40°F and 105°F. Large
  temperature changes will affect the accuracy of the scale.

• Install the balance on a flat, stable surface

• Do not install or use the balance in locations subject to strong air currents or
  vibration.

• Do not install or use the balance in direct sunlight.

• Do not install or use the balance in a location subject to wide swings in
  temperature or humidity.

• Do not press buttons on the balance with items having a sharp point such as a
  pen or pencil.

• Do not install or use the balance in the vicinity of equipment that produces
  electromagnetic interference (EMI) or radiation.

Product Specifications

Model HC Series
Pan size 7.7” x 7.7” (195mm x 195mm)
Power supply 110V
Display LCD
Units of measurement g, ct, kg, oz, t, dwt, ozt
Stabilization time 5 seconds
Functions Weighing/Tare/Counting/Printing
Sensor Strain gauge
Materials ABS body, stainless steel weighing pan
Calibration External
Capacity Accuracy 15kg, 10kg: 0.1g | 1000-3000g: 0.01g

Display

Controls

Button Short Press vs. Long Press Action
POWER Short press Turns balance on or off

Button Short Press vs. Long Press Action
CAL/PCS Short press/Long Press
Long press – Used to calibrate scale (CAL)
Short press – Used for counting function (PCS)
UNIT Short press
Changes the unit between g, ct, oz, kg, oz, t,
dwt, ozt
TARE Short press Used to reduce gross weight to tare weight

Packing List

• Fristaden Lab Precision Balance
• Weighing pan
• Weighing pan holder (for square weighing pans only)
• Power cord
• 500g calibration weight (not included with 0.1g accuracy balances)
• User manual

Unpacking
After unpacking, please check the contents to ensure all of the components are
present and there is no damage. If parts are missing or damaged, please contact
customer support.

NOTE: Batteries and Data Cable Are Not Included

Installation

1. Assemble the balance by screwing the weighing pan holder into the balance.
2. Place the weighing pan on the weigh pan holder.
3. Please confirm the correct voltage before using the scale.
4. Attach the power cord and plug the balance into a 110V socket.

Getting Started

1. Ensure the balance is level. The supports on the bottom of the balance can be
   screwed in or out as needed to level the instrument.

2. Press the ON/OFF button to turn the balance on.

3. When turning on, the display will fully illuminate for approximately 1.5 seconds.

4. The balance will display numbers 1 through 9. When it reaches 0, the balance
   is ready for calibration.

Calibration

The calibration function can auto-detect any calibration weight in multiples of
100g, i.e., 200g, 500g, 1000g, etc., as long as the weight does not exceed the
maximum capacity of the balance. For scales with a maximum capacity of 2000g
or greater, use a calibration weight of at least 500g. The closer the calibration
weight is to the maximum capacity of the balance, the greater the accuracy of the
weighing. For example, with a 2000g maximum weighing capacity, greater
accuracy can be achieved by calibrating with a 1000g weight versus a 500g
weight.

1. Turn the scale on.

2. Press and hold the CAL/PCS key until the display shows “CAL.”

3. The display will show a weight (e.g., 500g). Place any calibration weight in
   multiples of 100g (a 500g weight include on the packing) on the weighing
   pan, it can auto-detect the calibration weight. Note: The calibration weight is
   not included with 0.1g balances.

4. Remove the standard mass once the display is stable and accurate.

NOTE: If this is the first time using the balance, repeat the calibration steps 2-3
times. Please ensure that the scale is completely level and stable during
calibration. If, after repeating the calibration steps 2-3 times, the weighing is still
inaccurate, contact customer service for assistance before making a return.

Zero
Press the TARE button before weighing to ensure an adequate reading (starting from 0).

Linear Calibration
IIn order to ensure the accuracy of the balance, it should be calibrated regularly
and frequently. For routine calibration, the balance is normally calibrated to a
single point. However, if the balance starts to experience inaccuracies, the balance
requires linear calibration to remedy the issue.

Single-Point Linear Calibration

1. Turn on the scale

2. Press the TARE key twice and the CAL/PCS key once immediately. After a few
   seconds, the display will show “01-diu.”

3. Press the UNIT key to change the display to “04-CAL.”

4. Press the TARE key; the display will show “CAL 2” (or 1, 3, 4, or 5).

5. Press the UNIT key and it will cycle from “CAL 1” to “CAL 5.”

6. Press the TARE key to confirm “CAL 1.”

7. The display will show “05000.0” (max 5000g). Keep press the TARE key to the
   last digit and press TARE key again until the display will change to “Put 1 1” (ignore
   the last number 1).

8. Place a 5000g calibration weight on the pan and press the TARE key. The display
   will show “5000.0” and the calibration is finished.

Two or More Points Linear Calibration

1. Turn on the scale

2. Press the TARE key twice and the CAL/PCS key once immediately after. The
   display will show “01-diu” after a few seconds

3. Press the UNIT key to change the display to “04-CAL.”

4. Press the TARE key; the display will show “CAL 2” (or 1, 3, 4, or 5).

5. Press the UNIT key and it will cycle from “CAL 1” to “CAL 5”; select CAL 2 for a
   two-point calibration. Note: You can select more calibration points as necessary.

6. Press the TARE key; the display will show “Put 1 1” (ignore the change of last
   number 1)

7. Place a 2500g calibration weight on the pan and press the TARE key; the display
   will show “Put 2 1” (ignore the last number 1).

8. Place a 5000g calibration weight on the scale; the display will show “5000.0”
   and calibration is finished.

Note: If you are conducting a 3-, 4-, or 5-point calibration, there is no need to
press the TARE key in Step 7 above. You would instead follow this procedure:

1. Turn on the scale

2. Press the TARE key twice and the CAL/PCS key once immediately after. The
   display will show “-diu” after a few seconds

3. Press the UNIT key to change the display to “04-CAL.”

4. Press the TARE key; the display will show “CAL 2” (or 1, 3, 4, or 5).

5. Press the UNIT key and it will cycle from “CAL 1” to “CAL 5”; select “CAL 2” [1] for
   a two-point calibration. Note: You can select more calibration points as necessary.

6. Press the TARE key; the display will show “Put 1 1” (ignore the change of last
   number 1).

7. Place a 2500g calibration weight on the pan; the display will show “Put 2 1”
   (ignore the last number 1).

8. Place a 5000g calibration weight on the scale; the display will show “5000.0”
   and calibration is finished.

Tare
Press TARE before weighing to ensure an accurate reading (starting from 0).

1. Place an empty container on the pan. Its weight will be displayed.
2. Press TARE until “0” is displayed.
3. Place additional objects in the container to find the net weight.
4. When you remove the empty container, the scale will display a negative number.
5. Press TARE again and the weight display will return to “0.”

Unit Conversion
Press the UNIT/PCS button to switch between the available units of measurement,
e.g., g, ct, oz, kg, t, dwt, ozt, etc.

Counting Function

Counting Function
The counting function is used to count the number of parts by extrapolating
values from the original sample.

1. Press TARE.

2. Press and hold the CAL/PCS key. The balance will cycle through 10, 20, 50,
   and 100.

3. Press the CAL/PCS when the number corresponds to the number of objects
   you will place in the pan. For example, if you have 20 pieces, select 20 by
   pressing CAL/PCS when the display shows “20.”

4. Place the corresponding number of units on the scale. For example, if you
   chose 10, then place 10 units on the scale.

5. Press CAL/PCS to confirm.

6. Add or remove pieces from the pan and the scale will display the number of
   pieces weighed. For example, if you add 3 pieces, the balance will display “13.”

7. Press CAL/PCS again to exit the counting function.

Overload Warning
Do not overload the balance to avoid potential damage to the unit. If the display
shows “—OL—”, remove weight from the scale until “0” is displayed.

RS232 Printout Settings
Connecting the balance to a PC requires an RS232 to USB adapter serial cable (not
included) and COMTool. COMTool is a serial communication terminal program
that can transmit bytes to and from devices connected to the PC’s COM port.

Using COM Tool

1. Connect the balance to the PC using the RS232 cable.
2. Open COMTool and select the COM port.
3. Set the baud rate: 9600; stop bits:1; data bits: 8; parity: None.
4. The command is R or r

RS232 Output Parameter Settings

1. Turn on the power.

2. Press the TARE key twice, and press the CAL/PCS key once.

3. When the display shows “01-dlU,” press the UNIT button until “08-bud” is
   displayed.

4. Press the TARE button. If “9600” is not displayed, press the UNIT button until
   “9600” appears.

5. Press the TARE button; “08-bud” will appear.

6. Press the UNIT button; “09-odE” will appear.

7. Press TARE; the number “0,” “1,” “2,” “3,” or another number will appear. Press
   the UNIT key to cycle through the settings. Normally, you should only choose
   number “2” or “3.” The number 2 means stable output and number 3 means
   continuous output.

8. Press TARE after selecting the output mode.

9. Turn the balance off and then turn it on again to complete the output settings.

Adjusting the Baud Rate

The baud rate is the rate of data transfer to the PC. It indicates how
many bits per second can be transferred. The default baud rate for
this balance is 9600. The baud rate settings for the balance and the
PC must match.
1.Turn on the power.
2.Press the TARE button twice, and press the CAL/PCS key once.
3.When the LCD displays “01-dlU,” press the UNIT button until “08-
bud” is displayed.
4. Press the TARE button. If “9600” is not displayed, press the UNIT
button until “9600” appears.
5.Press TARE key, then turn the balance off and then turn it on again
to complete the setting.

Cleaning

• Always power off and unplug the balance before cleaning or storing it.

• Use a damp cloth to wipe down the balance and weighing pan. For stubborn
  stains, use a mild detergent on a damp cloth. Dry the balance after cleaning.

• Do not clean the balance with solvents or cleaners that may cause damage or corrosion.

• Do not immerse the balance in water or other liquids.

• Do not use a stream of water to clean the balance.

Troubleshooting

If these troubleshooting measures do not solve the problem, contact customer
support. The balance should be serviced by authorized technicians only.

Factory Testing
Your balance has undergone extensive quality control (QC) testing at the
laboratory prior to shipment. The following QC tests have been conducted:

Margin of Error
Testing is performed to verify that the margin of error is less than .03g for a .01g
balance.

Linearity
This testing is conducted with 4 different weights measured 4 times. For example,
for a 1000g maximum-capacity balance, linearity testing will be conducted with
weights of 200g, 500g, 800g, and 1000g. Larger capacity scales are tested with
more weights and more repetitions of testing. Testing is conducted until the
readings are consistent and accurate.

Repeatability
A weight representing the maximum capacity of the balance is weighed 10 times
until the margin of error for each weighing is less than the acceptable specified
margin of error, i.e., less than .03g for a .01g accuracy balance. As an example, for
a 2000g maximum capacity balance, a 2000g weight is used. In order to pass the
repeatability test, each reading must fall within 1999.97g and 2000.03g.

Four Points Testing
Four points testing is conducted by placing a weight on each of corner of the pan
consecutively (not at the same time) and taking a reading each time. Each reading
should fall within the accepted margin of error to pass the test.

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