AWM2000 Series
Mass flow sensor for gases
HEATER CONTROL CIRCUIT
SENSING BRIDGE SUPPLY CIRCUIT
Note:
Circuits required for operation per specifications. Circuits are not on board the
sensor.
DIFFERENTIAL INSTRUMENTATION AMPLIFIER CIRCUIT (OPTIONAL)
4
2R2 + R
1
R
(
VO =
V2 −V +VOffset
)
1
R
R3
1
5
R6
R6 + R
where
VOffset =V
S
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June 2005 / 581
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