/

Pressure

01

MEASURING PRINCIPLE

Piezoresistive pressure sensing

A silicon or ceramic diaphragm deforms under pressure and a bridge of strain-sensitive resistors converts that deflection into a millivolt signal.

PRINCIPLE · LIVE SIGNAL13.9mA
Piezoresistive pressure sensing: how it works | INSTRAVAPRIN01

02

HOW IT WORKS

See the principle in action

Move the slider to change the process variable and watch the signal respond.

Piezoresistive pressure sensing
Piezoresistive pressure sensing: how it works | INSTRAVASTRAIN GAUGES · ΔR ∝ DEFLECTIONPROCESS PRESSURE
PRESSURE
8.00 bar
OUTPUT
12.0 mA
  1. Process pressure deflects a thin diaphragm.
  2. Strain gauges on the diaphragm change resistance.
  3. A bridge circuit converts the change into a 4–20 mA signal.

03

AT A GLANCE

Strengths and limits

STRENGTHS

Compact, fast, accurate across wide ranges

LIMITS

Sensitive to overpressure and some media without isolation diaphragms

06

READ MORE

Articles and downloads

Nothing to download yet.

07

FAQ

Common questions

RFQ

REQUEST A QUOTE

Specify the right instrument

Share your process data and we will propose a model, with datasheets and a quotation.

Create a free website with Framer, the website builder loved by startups, designers and agencies.