Datasheet

ManualsBrandsSENSIRION ManualsSensorsPressure sensor SDP1000-L05 0 Pa up to 125 Pa

www.sensirion.com Version 5.1 April 2017 1/8

Datasheet SDP1000

Low Range Differential Pressure Sensor

for Air and Non-Aggressive Gases

Datasheet – v5.1

− For HVAC and medical OEM applications

− Unsurpassed performance thanks to CMOSens

technology

− Offset and hysteresis free

− Excellent accuracy and reproducibility even below 10 Pa

− Fully calibrated and temperature compensated

− Linear or square root extracted output characteristics available

− Not sensitive to the mounting orientation

− Direct PCB mounting with simple snap-on system

SDP1000 Product Summary

The SDP1000 differential pressure sensors for air cover

the following measurement ranges: –5 to 125 Pa (0.5

inch H

O), and -20 to 500 Pa (2 inch H

O).

Mounted in a rugged, chemically inert PPS housing the

SDP1000 differential pressure sensors feature a unique

dynamic range, zero offset and unsurpassed long term

stability. This makes it an ideal fit for demanding yet cost

sensitive OEM applications in HVAC and medical

equipment.

The devices are supplied with 5.0 V and provide a

0.25…4.0 V output. Although the output of the SDP1000

differential pressure sensor is analog, the internal

linearization and temperature compensation is

performed digitally. This results in a superior accuracy,

outstanding resolution, and lowest temperature

dependence.

Since fully exchangeable just a few external electronic

components around the SDP1000 make a high quality

differential sensor transmitter with e.g. an 0...10 V output

or other interfaces.

Its leading performance is based on Sensirion’s

proprietary CMOSens

sensor technology which

combines the sensor element with amplification and A/D

conversion on one single silicon chip. The differential

pressure is measured by a thermal sensor element. In

contrast to other thermal differential pressure sensors

only a very small amount of air is required. This leads to

a reliable operation even under harsh conditions. In

comparison to membrane based sensors the SDP1000

differential pressure sensors show an extended

measurement range, better offset stability and improved

reproducibility even at lowest pressure ranges. In

addition, the SDP1000 is robust against pressure bursts

and shows no sensitivity to the mounting orientation.

Applications

- Medical

- HVAC

- Automotive

- Process Automation

Block Diagram

Differential

pressure

Sensor

CMOSens

SENSOR CHIP

DIGITAL

Linearization and

Temperature

compensation

A/D converter

Memory

D/A

converter

5.0 V

OUT

0.25 V

to 4 V

GND

Summary of content (8 pages)

PAGE 1
Datasheet SDP1000 Low Range Differential Pressure Sensor for Air and Non-Aggressive Gases − For HVAC and medical OEM applications − Unsurpassed performance thanks to CMOSens® technology − Offset and hysteresis free − Excellent accuracy and reproducibility even below 10 Pa − Fully calibrated and temperature compensated − Linear or square root extracted output characteristics available − Not sensitive to the mounting orientation − Direct PCB mounting with simple snap-on system Datasheet – v5.
PAGE 2
Datasheet SDP1000 Series 1 Specifications Table 1: Sensor specifications (at 23°C and pabsolute = 966mbar, VDD = 5.0 V unless otherwise noted). SDP1000-L025 Parameter Min Measurement range Power supply Typ Max Min -62 62 -0.25 4.75 (see Tab 4) SDP1000-L05 5.00 Typ SDP1000-L Max Min -5 125 - 20 500 Pa 0.25 -0.02 0.5 -0.08 2 Inch water 5.25 4.75 5.25 4.75 5.25 V 5.00 Typ Unit 5.00 Max Typ. 4.00V at +62Pa Typ. 0.20V at –62Pa 4.00 4.00 V Zero Pressure Output 2.
PAGE 3
Datasheet SDP1000 Series Table 2: Additional sensor specifications. (1) Media Air, N2 – for other gases contact Sensirion AG. Operating Conditions: - Temperature - Humidity -10 °C … +60 °C / 14°F … 140 °F non-condensing Ambient storage conditions1 -40 °C … +80 °C / -40°F … 176 °F Orientation sensitivity below resolution Response time 40 ms Admissible overpressure (short term) 1 bar (14.
PAGE 4
Datasheet SDP1000 Series 2 Electrical Specifications 2.1 Power Supply The SDP1000 differential pressure sensors require a stable voltage supply of 5 V. Influence of the supply voltage variation on the offset and the sensitivity are given in Table 5. 2.2 Voltage Output The SDP1000 features a voltage output from 0.25 V to 4.0 V (Figure 2). An output voltage below 0.25 V indicates a negative differential pressure. This range is not calibrated however.
PAGE 5
Datasheet SDP1000 Series 3 Physical Dimensions and Mounting Information 3.1 Housing The SDP1000 differential pressure sensor is mounted in chemically inert PPS housing. The rugged 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 4 and 5. 5.2 (0.205) 30.5 (1.200) 22.1 18.3 (0.870) (0.720) 13.1 (0.516) Pin# Function 1 2 3 VDD (5 Vdc) Ground OUT (0.
PAGE 6
Datasheet SDP1000 Series 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 6) which leads to a dependence on the length of the hose (Figure 7). Tubes up to 1 m show less than 1 % error of the measured value (Figure 7). gas flow [sccm] 120 100 80 Length of the connecting hose Deviation of Measured Value 60 0.5 m (20 inch) - 0.4 % 40 1.0 m (40 inch) - 0.8 % 2.
PAGE 7
Datasheet SDP1000 Series 4 Ordering Information When ordering SDP1000 differential pressure sensors please refer to the following part names and article numbers. For the latest product information and local distributor check out Sensirion’s website on http://www.sensirion.com Table 6: Overview ordering information Part Name Output Range (Full Scale) Article Number SDP1000-L025 Voltage 0.2 – 4.0 V, linear ± 62 Pa ± 0.62 mbar ± 0.25 "H20 ± 0.009 PSI 1-100313-03 SDP1000-L05 Voltage 0.25 - 4.
PAGE 8
Datasheet SDP1000 Series Important Notices  Warning, personal injury Do not use this product as safety or emergency stop devices or in any other application where failure of the product could result in personal injury (including death). Do not use this product for applications other than its intended and authorized use. Before installing, handling, using or servicing this product, please consult the datasheet and application notes.