Sensirion SLF3S-4000B Compact Liquid Flow Sensor

Sensirion SLF3S-4000B Compact Liquid Flow Sensor is designed for high-volume applications and provides precise, reliable measurements of dynamic liquid flow rates up to 1000ml/min bi-directionally. The SLF3S-4000B sensor features a digital interface (I²C) via a 6-pin standard electrical connector and builds on a CMOSens® sensor chip. The patented CMOSens® technology combines the sensor element, signal processing, and digital calibration on a small CMOS chip. The well-proven CMOS technology is perfectly suited for high-quality mass production and is ideal for demanding and cost-sensitive OEM applications.

Features

High flow sensing up to ±1000ml/min
Calibrated for H₂O and IPA
Temperature-compensated
Turn down ratio 200:1 or better
Very compact and light-weight form factor
Response time below 20ms

No moving parts inside the flow path
High reliability and long-term stability
Great signal-to-noise ratio
Designed for mass production and high process capability

Specifications

±600ml/min full-scale flow rate
±1000ml/min sensor output limit
0.65ml/min mounting orientation sensitivity
3.2V_DC to 3.8V_DC supply voltage range
2.3V to 2.7V power-up/down level range
Supply currents
- 6mA maximum at measurement
- 0.6mA maximum in idle mode
25ms maximum power-up and soft reset times
50ms typical warm-up time
<2kV (Class 1C) human body model ESD

Update rates
- 1800Hz to 2200Hz liquid flow value and high flow flag
- 73Hz to 111Hz temperature value and air-in-line flag
10Hz to 2000Hz recommended sensor read-out frequency, 50Hz to 200Hz typical
Temperature ranges
- +5°C to +50°C operating
- -20°C to +60°C short-term storage
9 bar burst pressure

Sensirion SLF3S-4000B Compact Liquid Flow Sensor

Features

Specifications

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