Product Overview

The GF5000 Flow Sensor Module is a high-sensitivity, high-precision sensor designed for accurate measurement of non-corrosive gases like air, oxygen, and nitrogen. Utilizing the latest generation MEMS chip technology and a unique calibration scheme, it provides linear output and fast response times. Its robust design is resistant to condensation, making it ideal for demanding applications in medical devices, HVAC systems, and various industrial control and environmental monitoring instruments.

Product Attributes

• Brand: (Xin Ganzhi)
• Product Category: Flow Sensor
• Series: GF5000
• Overall Material: Silicon, Epoxy Resin, Aluminum Alloy, FR4

Technical Specifications

Application Fields

• Portable ventilators, domestic oxygen generators
• Continuous Positive Airway Pressure (CPAP) devices
• Anesthesia and delivery
• Critical care equipment
• HVAC (Heating, Ventilation, and Air Conditioning)
• Gas measurement and equipment control
• Fuel cell control
• Environmental detectors, mass spectrometers, and other instruments

Model Selection Guide Example

GF5200-A0545/D-A

• Brand: (Xin Ganzhi)
• Product Category: Flow Sensor
• Model: 5000 Series
• Range: 200 SLM
• Output Type: A (Analog), D (Digital)
• Analog Output Voltage: A0545 (0.5-4.5V), A1050 (1.0-5.0V), others as per table
• Gas Type: A (Air)

Flow Rate Calculation Formulas

• Analog Output: Flow = [(Vout - 0.5 V) / 4 V] Full Scale Flow (e.g., GF5200-A-A @ 0.5~4.5V, 2.5V output = 100 SLM)
• Digital Output: Flow = [I2C Output Reading] / K (K=1000 for 5 SLM Flow < 50 SLM; K=100 for 50 SLM Flow 300 SLM) (e.g., GF5150-D-A, reading 11055 = 110.55 SLM)

Usage Notes

• Installation: Recommended pipe lengths: 10x diameter upstream, 5x diameter downstream. Ensure concentric installation and secure mounting. Airflow direction must match product indication. Connect wiring according to pin definitions.
• Operational Precautions: Use within specified environments. Observe airflow direction during installation. Avoid simultaneous piping, cleaning, or introducing excessive impurities. Moisture and impurities may degrade sensor performance or cause damage. Ensure correct power polarity to prevent circuit damage. Confirm performance in actual usage conditions.
• Safety Precautions: Use power and voltage within rated limits. Follow electrical definitions for wiring; reverse polarity can cause damage. Handle product fixing and pressure port connections with care. Implement safety designs (fuses, circuit breakers, redundancy) to prevent harm from malfunction.

I2C Communication Protocol Details

• Supports standard mode (100Kbps).
• I2C default address: 0x50.
• Flow data is transmitted as 2 bytes (high byte, low byte).
• Data unit is L/M (Liters per minute). Conversion to M/H: M = L / 1000 * 60.
• Example: 16-bit data 0x03E8 (1000 decimal) with K=100 represents 10.00 L/M.