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beep and at the same time display it’s Max. Capacity in about 1 second, it excuses 

self-checking. If the zero position is normal, "0.000" is displayed. 

d. If the battery indicating light 

 - + 

  turns on, insert adapter and charge the storage 

battery in time. 

4.2 Zero-setting 

When the weight is under 2% F • S and if press ZFRO it will display "0.000". At the 

same time, indicator light “0” turns on. 

The repeated zero range is 4% F • S. 

Note: When the indicating "NET" light on, zero-setting doesn’t work. 

4.3 Tare 

Place the container or packing material on platter, then press [TARE], it will display 

"0.000" and the indicating "NET" turns on. Press [TARE] again, it will return to the 

original tare display value and at the same the "NET" turns off. 

4.4 Unit converting 

When Scale Power up is g, scale only work under gram unit; When Scale Po

wer up is kg or Lb, the weight units converting is allowed, press unit key to 

switch. If "kg/lb" light flashing, means "Lb" selected. 

 

5. Rechargeable Battery Maintaining 

(Please skip this section if your scale does not have battery.) 

Attention: 

 

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Summary of Contents for GMB-803

Page 1: ...GMB 803 806 815 830 Waterproof Digital Scale Operation Manual Version 2 2 Gamma Scale Tel 905 455 8333 Fax 905 455 0658 E mail info gammascale com Website www gammascale com...

Page 2: ...ting temperature 25 C 50 C 1 8 Relative humidity no more than 100 1 9 Water proof design IP66 IP67 1 10 Power supply 9V 800mAAC adapter only 1 11 Display 6 digits 0 56 inch LED 1 12 Display stability...

Page 3: ...value warning 2 6 Units g or Kg Lb 2 7 Low battery voltage indicating 2 8 Voltage saving display mode 2 9 Auto shut off 2 10 Key beep sound selection 2 11 simple rectifying 3 Operation Keys ON a Turn...

Page 4: ...8 7 0 sequence in calibration 4 Operation 4 1 Power on a Adjust the support feet to make sure the scale is under level state it must be used in non vibration condition Note Be sure that the protecting...

Page 5: ...hen the indicating NET light on zero setting doesn t work 4 3 Tare Place the container or packing material on platter then press TARE it will display 0 000 and the indicating NET turns on Press TARE a...

Page 6: ...in several minutes 5 2 If it automatically shut off as soon as it is turned on with DC power it means its battery voltage is seriously low at this time charge the battery at once 5 3 If the working ti...

Page 7: ...ok and battery being charged properly With AC adaptor plugging in Scale display should always stay on 0 000 never go to sleeping mode do not display D How to tell battery been fully charged With AC a...

Page 8: ...ction it must be used under high non vibration conduction 6 2 While weighing place the load in the center of the platter as far as possible 6 3 Never use high corrosive solvents to clean it 6 4 Do not...

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