SLP004D Datasheet, PDF (3/4 Pages) Sensortechnics GmbH – Low pressure sensors

TYPICAL PERFORMANCE CHARACTERISTICS
SLP004D
Low pressure sensors
APPLICATION INFORMATION
General Information
The SLP family of pressure sensors function
as a wheatstone bridge. When pressure
applied to the device the resistors in the
arms of the bridge change as shown in
Figure 1.
The resulting differential output voltage, V₀,
is easily shown to by V₀ = V_B x ∆R. Since
the change in resistance is directly propor-
tional to pressure, V₀ can be written as:
V₀ = S x P x V_B + V_OS
where:
V₀ is the output voltage in mV
S is the sensitivity in mV/V psi
P is the pressure in psi
V is the bridge voltage in volts
B
V is the offset error
OS
(the differential output voltage when
the applied pressure is zero).
For a complete application discussion see
SenSym´s SCC series datasheet.
July 2005 / 046
Figure I
3/4
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