Overview
Description
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.
Features
- 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
Comparison
Applications
Documentation
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Type | Title | Date |
Datasheet | PDF 366 KB | |
End Of Life Notice | PDF 1.11 MB | |
Application Note | PDF 135 KB | |
Product Change Notice | PDF 87 KB | |
Product Brief | PDF 236 KB | |
5 items
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Product Options
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Support
Support Communities
Support Communities
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Waterproofing a FS1025-DL water flow sensor.
Hello All, I am in need of a sensor to measure water flow but it may be partially submerged. I think the FS1025-DL would be perfect for the application except for the lack of waterproofing. I would like to know the feasibility of opening the case and using protecting ...
Nov 10, 2022 -
FS1025-DL to measure petrol
Hi, Is the 1025 able to measure petrol? And is this sensor available to buy now? I don't see it much on your site? Thanks Danny
Jun 28, 2024 -
FS1025-DL less sensitive and then stopped reporting flow
Hello, I have been testing out the FS1025-DL and it was working very well in our seawater system. But it appears to have failed, a few weeks ago the flow started drifting lower and now it reads zero, after taking it apart it appears that there is some corrosion ...
May 3, 2024
FAQs
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FS1025 - Sensor die on FS1025-DL and FS1025-DG
Yes. The difference between the two is based on calibration procedure (gas has a full calibration sweep). Liquids were decided to have a 2 point calibration only for production efficiency.
Dec 1, 2023 -
FS1025 - Calibration on FS1025-DL
The FS1025-DL is NOT a fully calibrated module over the entire span of the flow range. It features a trimmed span from zero flow to full scale, 0 to 7 liters/min. We trim these two flow points to be the same for each module. The curve for ...
Dec 1, 2023 -
FS1025 - Parylene coating FS1025-DL
Yes. The Parylene Coating covers the entire PCBA, sensor, epoxy, gold plating.
Dec 1, 2023