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SITE PREPARATION REQUIREMENTS
The 200 Series Weight Indicator is a precision weight measuring instrument. As with any precision
instrument, it requires an acceptable environment to operate at its peak performance and
reliability. This section is provided to assist you in obtaining such an environment.
Electrical Power
The 200 Series Indicators are designed to operate from 90 to 264 VAC at 50/60 Hz. Note that a
special order is not required for operation at 230 VAC.
CAUTION! - To avoid electrical hazard and possible damage to the indicator,
DO NOT, under any circumstance, cut, remove, alter, or in any way bypass the
power cord grounding prong.
On models requiring 230 VAC power, it is the responsibility of the customer to have a qualified
electrician install the proper power cord plug which conforms to national electrical codes and local
codes and ordinances.
The power outlet for the indicator should be on a separate circuit from the distribution panel. This
circuit should be dedicated to the exclusive use of the indicator. The wiring should conform to
national and local electrical codes and ordinances and should be approved by the local inspector
to assure compliance.
To prevent electrical noise interference, make certain all other wall outlets for use with air
conditioning and heating equipment, lighting or other equipment with heavily inductive loads, such
as welders, motors and solenoids are on circuits separate from the indicator. Many of these
disturbances originate within the building itself and can seriously affect the operation of the
instrument. These sources of disturbances must be identified and steps must be taken to prevent
possible adverse effects on the instrument. Examples of available alternatives include isolation
transformers, power regulators, uninterruptible power supplies, or simple line filters.
In general, the 200 Series Indicator will
perform well within a temperature range of
14 to 104 °F (-10 to +40 °C ).
In order to keep cooling requirements to a
minimum, the indicator should be placed out
of direct sunlight and to provide adequate air
circulation, keep the area around the indicator
clear.
Make certain the instrument is not directly in
front of a heating or cooling vent. Such a
location will subject the indicator to sudden
temperature changes which may result in
unstable weight readings.
Insure that the indicator has good, clean AC
power and is properly grounded.
In areas subject to lightning strikes, additional
protection to minimize lightning damage, such
as surge suppressors, should be installed.
PRECAUTIONS
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