Model NO.
S400
Measuring Medium
Gas
Output Signal Type
Digital Type
Production Process
SemiConductor Integrated
Material
Metal
IP Rating
IP68
Certification
RoHS, CE, FCC
Customized
Customized
Trademark
Rainbow
Transport Package
Standard
Specification
customized
Origin
China
Introduction
The S400 series is fabricated using a micro-electromechanical system (MEMS) flow sensor
chip. It is suitable for the measurement of clean and relatively dry gases for various
purposes. It realizes the digitization, intelligence and high safety of the equipment, and has
the innovation of traditional industries.
Function and improvement; a wide range of flow ranges meet the flow measurement
requirements of different equipment in the industry. High sensitivity, high reliability, high
stability and low cost performance characteristics can promote the industry to develop
energy-saving and intelligent.
The S400 series is based on a MEMS flow sensing unit, high-precision digital processing
and calibration circuit (MCU), integrated high-resolution delta-sigma A/D converter and
logic with internal calibration and MCU processor. The sensing signal is effectively
collected in real time, and the accurate flow signal is obtained, and the corresponding
compensation algorithm is processed internally, so that no external calibration
compensation is required, and high-precision flow output can be ensured; the friendly
digital output communication mode can be used by the user. It is very convenient to get
the corresponding data information; the product application range is very broad.
Features
Wide flow range 0-500SLPM
High precision (1.5% F.S accuracy)
Linear output and temperature compensation
Maintain long-term stability with minimal zero drift
Solid-state sensing core (no surface void or fragile membrane), anti-blocking and
pressure shock
Analog output (1 to 5 V) (I2C output is also available)
Fast response time (20ms response time)
Application
Ventilator
oxygen machine
Gas mask and respirator
Sprayer
Continuous positive airway pressure (CPAP) device
Anesthesia delivery
Leak detection
spectrometer
Mass flow controller
Environmental climate control
Fuel cell control
Maximum rating
Working temperature: -25 ° C to 85 ° C
Storage temperature: -40 ° C to 90 ° C
Humidity: 0~100%RH*
Impact resistant 100 g
The sensor is resistant to condensation
1. Customizable range between 10SLM and 500SLM
2. SLM: Standard liters per minute. Standard conditions: 0 ° C and 1 atmosphere
3. In addition, the two-way airflow test can be customized, and the analog output is
correspondingly changed. F(min)-F(max) corresponds to 1-5V output, and 0 flow
corresponds to 3V;
4. Includes temperature drift and linearity error
Linear Output
1. The unidirectional airflow mode: (calculation formula)
Flow = [(VOUT -1 V) / 4 V] × full scale flow
For example: CAFS4103V has a full-scale flow of 200 SLM. When the output voltage is read at 2.5V,
the instantaneous flow rate is [(2.5V-1V) / 4V × 200 SLM] = 75 SLM
2. Two-way airflow mode: (calculation formula)
Forward flow = [(VOUT -3 V)/2 V] × full scale flow
Reverse flow = [(3 V- VOUT)/2 V] × full scale flow
Shell Size:
Note 1: The connector can be matched with a connecting line according to customer requirements.
