Rice Lake MC Series Mass Comparator, A&D Weighing - MC-6100 - Manual (Page 13)

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z Warm up the balance for at least 30 minutes. Plug in the AC
adapter as usual.
z Calibrate the balance periodically for accurate weighing.
z Before using the balance for the first time or after having moved
it to another location, warm up the balance for six hours or
more to allow the balance to reach equilibrium with the room
temperature, and then calibrate the balance.
Caution
Do not install the balance where flammable or corrosive gas is present.
3-2 During Use
z Static charge may cause weighing errors. When the
ambient humidity is less than 45% RH, insulators such as
plastic or glass are prone to static electricity. Discharge
static electricity from the material to be weighed
(hereinafter referred to as sample). Ground the balance
and try the following:
Eliminate the static electricity by using an optional
static eliminator, AD-1683,
Or try to keep the ambient humidity above 45%RH.
Or use a metal shield case.
Or wipe a charged plastic sample with the wet cloth.
z This balance uses a strong magnet as part of the
balance assembly, so please use caution when
weighing magnetic materials such as iron. If there is a
problem, use the underhook on the bottom of the
balance to suspend the material away from the
influence of the magnet.
z Cancel the temperature difference between a sample, tare and the environment. When a
sample is warmer (cooler) than the ambient temperature, the sample will be lighter (heavier)
than the true weight. This error is due to a rising (falling) draft around the sample.
z Make each weighing gently and quickly to avoid errors due to changes in the environmental
conditions.
z Do not drop things upon the weighing pan, or place a sample on the pan that is beyond the
balance weighing capacity. Place a sample in the center of the weighing pan.
z Do not use a sharp instrument such as a pencil to press the keys. Use your finger only.
z Press the RE-ZERO key before each weighing to prevent possible errors.
z Take into consideration the affect of air buoyancy on a sample when more accuracy is
required.
z Keep the balance interior free of dust and foreign materials.