A&D AS2503, Инструкция по эксплуатации

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. MEASUREMENT
4.1 Cautions before Measuring (Refer to Table 4.1)
Before starting measurement, check the following points:
Items Cautions Reasons
Installation
environment
for strain gauges
and bridge box
The joints must be soldered, and
the connectors must be properly connected.
Prevents poor connections, noise,
and instability in operation.
The insulation resistance of strain gauges must
be equal to or greater than 60 M

.
Prevents instability in operation as well
as noise from entering the equipment.
Installing the bridge box and strain gauges in
the presence of strong magnetic or electric
fields must be avoided.
Prevents noise from entering
the equipment.
Install the bridge box and strain gauges in
environments where there is as little moisture
as possible and the ambient temperature is not
high.
Prevents instability in operation.
The leads that connect strain gauges to the
bridge box should be as short as possible and
should be shielded.
Prevents reduction in the gauge factor and
deterioration in output linearity.
Prevents noise from entering
the equipment.
The interconnecting cable, which connects the
bridge box to the AS amplifier unit, should be
as short as possible. (The AS amplifier
automatically compensates for bridge voltage
drops with its cable length compensation.)
Prevents a bridge voltage drop,
which may result in an error between
the signal and the internal calibrator.
Installation
environment
for dynamic
strain amplifier
system
The amplifier system must be used in
environments where the ambient temperature
ranges from -10 to +50

C and the ambient
humidity ranges from 20 to 85% RH
(with no condensation).
Prevents instability in operation.
Install the amplifier system
in environments where acceleration
of mechanical vibrations is less than
3 G (3000 rpm, 0.6 mm
P-P
)
Prevents damage and noise
from entering the equipment.
Installing the amplifier system in the presence
of strong magnetic or electric fields must be
avoided.
Prevents noise from entering
the equipment.