Instructions

Table Of Contents

1 Introduction

The differential pressure sensors from Würth Elektronik eiSos allow measurement of pres-

sure difference between two vertical pressure ports. The sensors consist of a MEMS based

piezo-resistive sensing element and an ASIC integrated on a ceramic substrate. On-chip

calibration, temperature compensation and signal conditioning provide highly accurate pres-

sure in both digital and analog forms. Digital pressure data can be accessed by interfacing

the sensor to the host controller via digital I

C interface. Simple communication protocol en-

ables easy integration of the software, without the need of programming internal registers.

The sensors, available in various pressure ranges can measure differential pressure up to

10 bar. They are intended to be used for non-corrosive gases such as air and other dry

gases (See section

2.2

for further information). The sensors come in 13 x 8 x 7.5 mm

reﬂow solderable surface mount package with two pressure ports on top, allowing ﬂexible

mounting.

1.1 Applications

• HVAC

• Filter monitoring

• Gas leak detection

• Inhalers

• Fume hood

1.2 Key features

• Available in different pressure ranges

– ± 0.1 KPa

– ± 1 KPa

– ± 10 KPa

– 0 to 100 KPa

– -100 KPa to 1000 KPa

• Supply voltage: 5V

• Digital output for pressure and temperature

• Communication interface: I

• Analog voltage output for pressure

• Temperature range: -25 °C to 85 °C

• Typical current consumption: 4 mA

Differential Pressure Sensor, Part Nr. 25131308xxx01