The FS1025-DL comprise a MEMS flow sensor mounted on a circuit board with an amplification circuit and a flow housing.

The FS1025-DL is targeted for liquid applications. The sensor utilizes thermopile sensing, which provides an excellent signal-to-noise ratio and is ideal for applications requiring low power. It is highly sensitive at low flow rates with a very fast response time.The FS1025-DL outputs a non-linear curve with flow. It features an Analog, 0 to 4.5V, and Digital I2C output.

FS1025-DL complies with NSF/ANSI 61: Drinking Water Systems Components - Health Effects. It can be safely used in water and beverage applications.


  • Measures liquid mediums
  • Robust solid isolation technology
  • Resistant to vibration and pressure shock
  • Fast response time
  • 0 to 4.5V DC output, digital I2C output
  • Supply voltage: 5V DC
  • Operating temperature range: 5°C to +75°C
  • NSF/ANSI 61 Compliant




  • Water dispensers
  • Liquid metering or switch
  • Process controls and monitoring


Type Title Date
Datasheet PDF 366 KB
Application Note PDF 135 KB
Product Change Notice PDF 87 KB
Product Brief PDF 236 KB
4 items

Design & Development