SDP1108-R データシートの表示（PDF） - Unspecified
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SDP1108-R Datasheet PDF : 8 Pages
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1 Sensor Output Characteristics1
SDPx108-R
3.75
3.25
2.75
The SDPx108-R provides a fully calibrated voltage
output. To enhance resolution and accuracy at very
low differential pressures, the SDPx108 standard
version (SDPx108-R) comes with a root-square
output characteristics.
2.25
For high-quantity OEM applications, other ranges
1.75
and output characteristics can be realized. E.g.
linear output and a bidirectional measurement
1.25
range is possible. Please contact Sensirion for
0.75
further information.
0.25
0
20
40
60
80
100
differential pressure [% FS]
Diff. Press.[Pa] = Output _Voltage − 0.25V 2 ⋅ FS[Pa]
3.75V
Use this formula to convert the sensor output into
physical value.
1Calibration conditions apply unless otherwise noted: 23°C and pabsolute = 966 mbar, dry air, VDD = 5.000 V. FS is 500Pa for the SDP1108 and
3500 Pa for the SDP2108.
2 Specifications
Table 1: SDPx108-R Sensor specifications1
Parameter
Measurement range
Accuracy3
20% FS to 100% FS
0 to 20% FS
zero2
Repeatability
100 to 500 Pa
0 to 100 Pa
Null drift per year6
Additional error over
temperature7 (T ≠ 23°C)
0 to 100 % FS
zero
Response time(8)
Cut off frequency of internal filter
SDP1108-R
Min Typ Max
0.25 -
4
0
- 500
0
-
2
- 1.0 2.0
- 0.2 0.4
-
15 40
0.01 0.06
- 0.3 1.0
- 0.05 0.2
-
0 0.1
- 0.03 0.05
-
1
2
6.6 8.0 10.1
17 20 24
SDP2108-R
Min Typ Max
0.25
4
0
3500
0
14
-
1
2
- 0.2 0.4
-
20 50
0.1 0.6
- 0.3 1.0
- 0.06 0.2
-
0 0.3
- 0.03 0.05
-
1
3
6.6 8.0 10.1
17 20 24
Unit
Volts
Pa
Inch water
% Measured Value4
% Full Span5
mV
Pa
% Measured Value
% Full Span5
Pa / year
% Measured Value4 / °C
mV/°C
ms
Hz
1 Calibration conditions apply unless otherwise noted: 23°C and pabsolute = 966 mbar, dry air, VDD = 5.000 V
2 Variance between the zero point (offset) of different sensors measured under the same conditions (e.g. same supply voltage, temperature, …)
3 Include deviations due to linearity, hysteresis, and repeatability
4 % Measured value = (SDPx108 output [Pa] - output of reference instrument [Pa]) / output of reference instrument [Pa].
5 Full span is defined as 3750 mV / 500 Pa for SDP1108 and 3750 mV / 3500 Pa for the SDP2108.
6 Drift over time due to aging, pressure cycles… Test results can be provided.
7 The additional error due to temperature variation is temporary. Once the sensor is back to the calibration temperature, the shift disappears
(no hysteresis).
8 Tau= 0 to 63%, filter response time = 8ms. For faster response time, contact Sensirion.
www.sensirion.com
Version 2- February 2013
2/7
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