Maximum Ratings

• Operating Temperature: -25°C to 85°C
• Storage Temperature: -40°C to 90°C
• Humidity: 0-100% RH
• Impact Resistance: Up to 100g

Note: The sensor is resistant to condensate.

Product Overview

The CAFS4000 Series Mass Flow Sensors offer a robust solution for high-precision gas flow measurement across various applications, including medical, industrial, and environmental monitoring. This series features a wide flow range, exceptional accuracy, and long-term stability, making it ideal for demanding measurement tasks.

Product Features

Wide Flow Range

• 0-400 SLPM, accommodating a variety of applications from low to high flow rates.

High Precision

• Achieves ±1.5% FS accuracy, ensuring reliable and accurate measurements.

Linear Output and Temperature Compensation

• Provides linear output with built-in temperature compensation, facilitating straightforward integration and consistent performance across varying temperatures.

Long-term Stability

• Maintains minimal zero-drift over time, ensuring consistent accuracy and reliability.

Durable Solid-State Sensing Core

• Features a solid-state sensing core with no surface cavities or fragile films, offering excellent resistance to blockage and pressure impact.

Output Options

• Available with analog output (1 to 5 V) and I2C output, providing flexibility for different integration needs.

Fast Response Time

• Boasts a 20 ms response time, enabling quick detection and response to changes in flow conditions.

Product Applications

The CAFS4000 Series is suitable for a wide range of applications, including:

• Respiratory Equipment: Breathing machines, oxygen concentrators, anti-asphyxiation masks, respirators, and CPAP devices.
• Medical Devices: Anatomy anesthesia delivery systems.
• Industrial Equipment: Leak detection systems, mass flow controllers, and environmental/climate control systems.
• Scientific Instruments: Spectrographs and fuel cell control systems.

Electrical Characteristics

• Test Conditions: VIN=12±0.01VDC, Ta=25°C, Relative Humidity: 40% < RH < 60%
• Supply Voltage Range: 8 to 24 VDC
• Supply Current: 20 mA
• Analog Voltage Output: 1 to 5 VDC
• Zero Point Voltage: 0.95 to 1.05 VDC
• Zero Drift: 0.2% FS
• Resolution: 0.1% FS
• Load: 100 KΩ
• Response Time: 1 to 3 ms

Flow Range Specifications

Material Composition

• Sensor Materials: Silicon carbide, epoxy, PS, FR4, and silicon as sealant.