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SDP2000-L

P1-P3P4-P6P7-P8
Datasheet SDP2000-L
www.sensirion.com Version 1 – April 2017 4/8
2. Electrical Specifications
2.1 Power Supply
The SDP2000-L differential pressure sensor requires a stable voltage supply of 5V. Influence of the supply voltage
variation on the offset and the sensitivity are given in Table 4
2.2 Voltage Output
The SDP2000-L features a voltage output from 0.25V to 4.0V (Figure 1). An output voltage below 0.25V indicates a
negative differential pressure. This range is not calibrated however.
The resistive load at the output pin should be larger than 20kOhm. The capacitive load at the output pin must not be
larger than 200pF. If the design shows a larger capacity at the output pin an additional resistor is required in series at the
output (e.g. 620Ohm).
Formula: P = lfactor * (voltage
(1)
– 0.250)/3.750
lfactor =
Pascal
3500
Inch water
14
(1)
voltage: measured output voltage in Volt.
Figure 1: Linear output at 5V supply of the SDP2000-L.
The fine lines indicate the maximum tolerances including a temperature variation from 0 to 50°C.
Table 3: Electrical characteristics
Parameter
Conditions
Min.
Typ.
Max.
Units
Power Supply Voltage V
DD
4.75
5.0
5.25
VDC
Operating Current
5 V, no load, zero flow
4.3
5.2
mA
Output capacitive load C
load
20
200
pF
Recommended load R
load
To GND
20
100
k
Table 4: Typical power supply dependence of the offset and the sensitivity
Parameter
4.75 V
5.0 V
5.25 V
Units
Offset
- 10.3
+ 10.3
Pa
Sensitivity
1.01
1.07
1.13
mV/Pa
0.00
1.00
2.00
3.00
4.00
0 20 40 60 80 100
output voltage [V]
differential pressure [% full scale]
Datasheet SDP2000-L
www.sensirion.com Version 1 – April 2017 5/8
3. Physical Dimensions and Mounting Information
3.1 Housing
The SDP2000-L differential pressure sensor is mounted in a PPS housing. The package has been designed to withstand
continuous overpressures of at least 1 bar (14.5 PSI). Burst pressure is > 2 bar (29 PSI)
The physical dimensions and mounting information is given in Figure 2 and Figure 3.
Figure 2: Pin out and physical dimensions in mm (inch). The drawing is not to scale
Pin#
Function
1
VDD (5V)
2
Ground
3
OUT (0.25…4V)
Datasheet SDP2000-L
www.sensirion.com Version 1 – April 2017 6/8
Dim.
[mm]
[inch]
[mil]
A
3.00
0.118
118
B
3.30
0.130
130
C
1.20
0.047
47
D
10.20
0.402
402
E
28.20
1.110
1110
F
2.54
0.100
100
G
0.60
0.024
24
H
0.50
0.020
20
I
22.70
0.894
894
Figure 3: SDP2000-L PCB footprint. The drawing is not to scale
3.2 Soldering Instructions
The SDP2000-L differential pressure sensor can be wave soldered. Direct reflow soldering is not recommended since it
may affect the accuracy.
If reflow soldering is required Sensirion recommends to use an SMD connector (e.g. type Samtec SSM103-L-SV) and to
mount the SDP2000-L after soldering.
3.3 Connecting Hose
Sensirion recommends a hose with an inner diameter of 1/8 to 3/20 inch (3.18 to 3.8mm). Due to the dynamic
measurement principle, a small air flow is required (Figure 4) which leads to a dependence on the length of the hose
(Figure 5). Tubes up to 1 m show less than 1 % error of the measured value.
Length of the
connecting hose
Deviation of
Measured Value
0.5 m (20 inch)
- 0.4 %
1.0 m (40 inch)
- 0.8 %
2.0 m (80 inch)
- 1.6 %
4.0 m (160 inch)
- 3.2 %
Figure 4: Typical air flow through the SDP2000-L.
Please note: 1 sccm = 1 cm3/min at 0°C and 1013 mbar
pressure (1 sccm = 0.001 norm liter)
Figure 5: Influence of the length of the connecting hose on
the accuracy (using 3/16 inch inner diameter). Example: a 50
Pa difference pressure is shown as 49.8 Pa when using 0.5 m
tube with 3/16 inch diameter
0
20
40
60
80
100
120
0 50 100
gas flow [sccm]
differential pressure [% full scale]
P1-P3P4-P6P7-P8

SDP2000-L

Mfr. #:
Buy SDP2000-L
Manufacturer:
Sensirion
Description:
Board Mount Pressure Sensors Differ Pressure Senso
Lifecycle:
New from this manufacturer.
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