Manual in English for SF400-D scales

Electronic Scales 0.01–500 g SF400-D User Manual

Before using the scales, please read the operating instructions. With proper care and correct use, the device will function reliably and for a long period of time.

Precautionary Measures

- Never overload the scales (do not place a weight greater than the specified capacity for this model).

- Avoid any contact of the device with high or low temperatures; electronic scales operate most effectively at normal room temperature. Always allow the scales to acclimatize to room temperature for at least one hour prior to use.

- If you intend to calibrate the scales, first keep them switched on for 30–60 seconds before calibration in order to allow the internal components to stabilize.

- Keep the scales clean. Dust, dirt, moisture, vibration, air currents, and proximity to other electronic equipment may adversely affect the reliability and accuracy of the scales.

- Handle with care: gently place items on the weighing platform, press the control buttons without applying excessive force. Avoid abrupt pressing, excessive force, or rough handling, as this may damage the internal sensors.

- Prevent shaking, impacts, and drops of the scales. This is a precision instrument and must be treated with care.

- Operate the scales only on a flat, stable surface.

INTRODUCTION

MAIN FUNCTIONS:

1 Power button: «ON/OFF».
2 Unit selection button: «MODE».
3 Tare selection button: «TARE».
4 Counting button: «PCS».
5 Calibration button: «CAL».

PREPARATION FOR OPERATION

Place the scales on a horizontal flat surface.

1. Press the «ON/OFF» button (power button).
2. Wait until the display shows [0.00] and stabilizes.
3. Place the object(s) on the weighing platform.
4. By pressing the «MODE» button (unit selection), you can switch between weight units.
5. By pressing the «CAL» button, you can calibrate the scales.

TARE ZEROING FUNCTION

1. Switch on the scales as described above.
2. Place the container («tare») on the platform.
3. Press the «TARE» button (tare selection) and wait until [0.00] is displayed.
4. After this, you may place the items to be weighed on the scales.

COUNTING FUNCTION

1. Press and hold the «PCS» button (counting button) for two seconds until «100» appears.
2. Press the «MODE» button (unit selection), and you will see «25, 50, 75, 100». Please select the number of items to be used as a sample.
3. Then place the corresponding number of items that you intend to use as a sample.
4. Next, press the «PCS» button (counting button) to confirm.
5. Remove the sample.
6. Now you can place the items you want to count in the center of the platform, and their quantity will be displayed on the screen.

UNIT CONVERSION

Press and hold the «MODE» button (mode button) to switch measurement units.

g - grams
ct - carat (0.2 grams)
dwt - pennyweight (1.555174 grams; a unit of mass in the troy system equal to 24 grains or 1/20 of a troy ounce)
gn - grain (0.05 grams; 1 grain equals 1/4 carat).
tl - tael (50 grams; 1 tael equals 1.5 ounces, a unit of weight used in Asia)
T - troy ounce (31.1034768 grams; also equal to 1/12 of a troy pound or 480 grains, a unit of weight commonly used in pharmacy)
oz - avoirdupois ounce (28.35 grams; in the United States and several other countries it is equal to 1/16 of the basic mass unit — the avoirdupois pound)
pcs - pieces

CALIBRATION OF SF400-D SCALES

1. Switch on the scales by pressing «ON/OFF» (power button).
2. Press and hold the «CAL» button (calibration function) until «CAL» is displayed.
3. Press the «CAL» button again; «CAL» will start flashing and then indicate the weight that should be placed on the platform.
4. Place the required weight on the platform and wait for 3 to 4 seconds until the word «PASS» appears on the screen.
5. Remove the weight and press «ON/OFF» (power button) to switch off the scales.

This completes the calibration.
If calibration fails, the screen will display the message «FAIL». Please repeat steps 1–5 of the calibration function.