A&D Scale HT500GD User Manual

  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
HT-500GD 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1WMPD4002178 
Jewelry Scale  

 
 1 
SAFETY PRECAUTIONS 
All safety messages are identified by the following, WARNING or 
CAUTION, of ANSI Z535.4 (American National Standard Institute: Product Safety 
Signs and Labels). The meanings are as follows: 
 WARNING A potentially hazardous situation which, if not 
avoided, could result in death or serious injury. 
 CAUTION A potentially hazardous situation which, if not 
avoided, may result in minor or moderate injury. 
  This manual is subject to change without notice at any time to improve...

 
 2 Compliance with FCC rules   Please note that this equipment generates, uses and can radiate radio 
frequency energy. This equipment has been tested and has been found to 
comply with the limits of a Class A computing device pursuant to Subpart J 
of Part 15 of FCC rules. These rules are designed to provide reasonable 
protection against interference when the equipment is operated in a 
commercial environment. If this unit is operated in a residential area it may 
cause some interference and under...

 
 3  
 The  ON/OFF   key turns the scale power on/off. 
 The 
 RE-ZERO   key sets the display to zero or subtracts the weight of a container in the weighing mode. 
The  RE-ZERO   key selects a parameter in the preset modes. 
 The  UNITS   key changes weighing units in the weighing mode. The  UNITS   key selects item in the preset modes. 
STABLE  The STABLE indicator   indicates when the reading is stable in the 
weighing mode. 
The STABLE indicator 
  indicates active units in unit selection. 
NET  The...

 
 4 
When using the AC adapter 
St ep 1  Verify that the AC adapter is correct.   
St ep 2  Open the rubber cap and plug the AC 
adapter into the AC adapter jack. 
 
 
 
 
 
 
WEIGHING 
St ep 1 Turning the scale on / off 
 Press the  ON/OFF   key to turn the scale on.   The scale displays all segments for a few seconds and then displays zero. 
Press the  ON/OFF   key again to turn the scale off.  St ep 2 Selecting the weighing unit 
 Press the  UNITS   key to select the weighing unit.   The scale will...

 
 5 
FUNCTIONS 
Automatic Power Off Function If the scale is left ON and the STABLE indicator is displayed, the automatic 
power-off function turns power off after approximately 5 minutes. 
St ep 1 Entering the preset mode. 
Press the  ON/OFF   key while pressing the  RE-ZERO  key. 
St ep 2 Selecting the status. 
Press the  RE-ZERO   key to disable or enable this function.    Automatic power off function is disabled    Automatic power off function is enabled. 
St ep 3 Storing the status. 
Press the...

 
 6 Unit  Unit name  Conversion to gram At preset mode
 Gram 1 g  
 Tola (India)  11.6638038 g   Ounce (Avoir)  28.349523125 g 
 Troy Ounce  31.1034768 g   Pound (UK)  453.59237 g  Tael (Taiwan)  37.5 g   
Ta el ( HK general, Singapore)   3 7.79 94 g   
 Pennyweight 1.55517384 g   Metric Carat  0.2 g  
 Newton   is a value calculated as follows:   
  Newton = (weight in gram) x (9.80665 m/s2) / 1000.   
 
 
 
Selecting The Decimal Point St ep 1 Entering the preset mode. 
Press the  ON/OFF   key while...

 
 7 
CALIBRATION 
When is Calibration Required? Calibration may be required when 
the scale was initially installed or has 
been moved to another location. 
 
 
 
 
Calibration Using a Calibration Weight 
St ep 1 Entering the calibration mode 
  Remove the switch cover located on the bottom of the scale. 
 Press the 
 ON/OFF   key to turn the scale on.  Press the  Calibration   switch while the scale is in the weighing mode.  will be displayed.  
St ep 2 Zero calibration 
 Press the  RE-ZERO  key....

 
 8 
Calibration by Gravity Compensation If the acceleration of gravity at your location is not correct and you do not have 
calibration weights, the scale can be calibrated by compensating for the 
acceleration of gravity. Refer to The Value of Gravity at Various Locations. 
St ep 1 Setting a new acceleration value 
 Press the  ON/OFF   key to turn the scale on.  Press the  Calibration   switch while the scale is in the weighing mode. Press the  UNITS  key when   is displayed. The current acceleration...

 
 9 
Gravity Acceleration At Various Locations  
Amsterdam 9.813 m/s2 Madrid  9.800 m/s2 Athens 9.807 m/s2 Manila  9.784 m/s2 Auckland NZ  9.799 m/s2 Mexico City  9.779 m/s2 Bangkok 9.783 m/s2 New York  9.802 m/s2 Brussels 9.811 m/s2 Milan  9.806 m/s2 Buenos Aires  9.797  m/s2 Oslo  9.819 m/s2 Calcutta 9.788 m/s2 Ottawa  9.806 m/s2 Cape Town  9.796 m/s2 Paris  9.809 m/s2 Chicago 9.803 m/s2  Rio de Janeiro  9.788 m/s2 Copenhagen 9.815 m/s2 Rome  9.803 m/s2 Nicosia 9.797 m/s2  San Francisco  9.800 m/s2...