HT series Compact Scale
Calibration and Function Setting Procedures
Calibration
When is Calibration Required?

Calibration may be required when the HT series compact scale was initially installed or has been moved toanother location.
Bottom of the scale

Calibration Using a Calibration Weight

Calibration switch

1. Entering the calibration mode
Remove the calibration switch cover located on the bottom of the scale.
Press the [ON:OFF] switch to turn the scale on.
Press the calibration switch while the scale is in the weighing mode.

1Cal will be displayed.
Calibration switch cover

2. Zero calibration
Press the [RE-ZERO] key.

Cal0 will be displayed.

Wait for the STABLE Indicator ({) to be displayed. Press the [RE-ZERO] key to perform zero
calibration.

Calf will be displayed after a few seconds. To calibrate span, go to step 3.
To return to the weighing mode without performing span calibration, press the [UNITS] key.

3. Span calibration
When Calf is displayed, place the calibration weight on the center of the weighing pan. Wait for theSTABLE indicator to be displayed. Press the [RE-ZERO] key to perform span calibration.

end will be displayed and the scale will automatically return to the weighing mode.
Note: For details about the calibration weight, see “Specifications”.

Calibration by Gravity Compensation

If the acceleration of gravity at your location is not 9.798 m/s2 and you do not have calibration weights, thescale can be calibrated by compensating for the acceleration of gravity. (See “The Value of Gravity atVarious Locations”.)

1. Setting a new acceleration value
When Cal is displayed, press the [UNITS] key. 9798 will be displayed.
To change the value, press the [RE-ZEsRO] key to increment the blinking digit and press the [UNITS]
key to move the blinking digit.

2. Storing the value into the memory
While pressing the [UNITS] key, press and hold the [RE-ZERO] key and release the [UNITS] key.
After 1end , Cal will be displayed. Turn the scale off to finish the procedure.
1WMPD4002012

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Specifications
MODEL

HT-300HT-3000

HT-500HT-5000

Capacity/Resolution

310 g x 0.1 g

3100 g x 1 g

510 g x 0.1 g

5100 g x 1 g

Maximum tare

310 g

3100 g510 g5100 gCalibration weight

300g ± 0.01g

3000g ± 0.1g

500g ± 0.01g

5000g ± 0.1g

The Value of Gravity at Various Locations
Amsterdam
AthensAuckland NZ
BangkokBirmingham
Brussels
Buenos Aires
Calcutta
Cape Town
ChicagoCopenhagen
CyprusDjakarta
Frankfurt
Glasgow

9.813 m/s2
9.807 m/s2
9.799 m/s2
9.783 m/s2
9.813 m/s2
9.811 m/s2
9.797 m/s2
9.788 m/s2
9.796 m/s2
9.803 m/s2
9.815 m/s2
9.797 m/s2
9.781 m/s2
9.810 m/s2
9.816 m/s2

HavanaHelsinki
KuwaitLisbonLondon (Greenwich)
Los AngelesMadrid
ManilaMelbourne
Mexico City
Milan
New York
OsloOttawa
Paris

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9.788 m/s2
9.819 m/s2
9.793 m/s2
9.801 m/s2
9.812 m/s2
9.796 m/s2
9.800 m/s2
9.784 m/s2
9.800 m/s2
9.779 m/s2
9.806 m/s2
9.802 m/s2
9.819 m/s2
9.806 m/s2
9.809 m/s2

Rio de Janeiro
Rome
San Francisco
Singapore
Stockholm
SydneyTaichung
TaiwanTaipeiTokyo
Vancouver, BC
Washington DC
Wellington NZ
Zurich

9.788 m/s2
9.803 m/s2
9.800 m/s2
9.781 m/s2
9.818 m/s2
9.797 m/s2
9.789 m/s2
9.788 m/s2
9.790 m/s2
9.798 m/s2
9.809 m/s2
9.801 m/s2
9.803 m/s2
9.807 m/s2

UnitsAll the available units and the order they appear in the display are as follows:

Ounce (avoir)

ozozt

Troy ounce

Tolaｔ

Gramglb oz

Pound ounceｔｌTael
Select either one of Taiwan tael or Hong Kong tael.

The units to be used can be selected in the function setting mode. The displaying order of the selected units
is the same as above, while skipping the units that are not selected.
For detailed information about selecting units, see “Function Setting”.

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Function Setting
Selecting Units
1.

While pressing the [UNITS] key, press the [ON:OFF] key to turn the scale on. 1Unit

will bedisplayed.
2.

Press the [RE-ZERO] key once. ゜Unit g

3.

Each time the [RE-ZERO] key is pressed, the display switches between ゜Unit gwill be displayed.
and ゜Unit g

Note: The STABLE indicator in the upper left corner of the display indicates that the unit is selected andcan be used for weighing.
4.

Press the [UNITS] key to select a unit. Units are displayed in turn, as shown below:
tolat→ ounce (avoir)→Hong Kong taeloz→ troy ounceozt→ pound ounce

Ib oz→ Taiwan taeltltl .

5.

Select a unit to be used and press the [RE-ZERO] key to display the STABLE indicator.

6.

Press the [UNITS] key. 1end

will be displayed blinking.

Press the [RE-ZERO] key. The new setting will be stored and the display will stop blinking. After asecond, the scale will automatically return to the weighing mode.

Changing the Decimal Point Type / Changing the Filter
1.

While pressing the [UNITS] key, press the [ON:OFF] key to turn the scale on. 1Unit

will bedisplayed.
2.

Press the [UNITS] key. 1pnt .

will be displayed. When the decimal point type is not to be changed.

go to step 4.
3.

Each time the [RE-ZERO] key is pressed, the display switches between

pnt .

andpnt , .

Select the decimal point type to be used.
4.

Press the [UNITS] key. 1fir 0

5.

Each time the [RE-ZERO] key is pressed, the display switches between

will be displayed. When the filter is not to be changed, go to step 6.

fir 0andfir 1 .

Select the filter to be used.
Note: 1fir 0

has been set at the factory before shipping. 1fir 1

is a filter with different frequency

characteristics. Select one appropriate to the operating environment.
6.

Press the [UNITS] key. 1end

will be displayed blinking.

Press the [RE-ZERO] key. The new setting will be stored and the display will stop blinking. After asecond, the scale will automatically return to the weighing mode.

4.