When Weighing Objects That Are Prone To Static Electricity - A&D EK-300EP Instruction Manual

4. Attach the battery cover and secure it to the
balance using the battery cover securing
screws.
 During use, the battery indicator changes as the battery voltage decreases, as shown
below.
New
 When "lb0" appears in the display during use, stop using the balance immediately
and replace all four batteries with new ones.

4-3. When Weighing Objects that are Prone to Static Electricity

 When the ambient humidity is low, insulating
materials such as plastics are prone to static
electricity. Weighing those with a static
charge will result in unstable or incorrect
weight values.
Under such a situation, ground the balance
using the grounding screw hole. Grounding
will reduce the influence of static electricity.
 A grounding wire or a screw is not provided and
must be prepared by the user.
Use an M3 screw with a nominal length of 12
mm or less.
Battery cover
 
7
Four batteries (AA, LR6 or AM3 size)
Battery cover
securing screws
 "lb0" Replace the batteries
Grounding screw hole