YJJ AFM0711H00 Thermal MEMS Gas Mass Flow Meter 0-100L/min RS485 1-5V NPN Alarm LCD Display

Product Description:

YJJ AFM0711H00 Thermal MEMS Gas Mass Flow Meter 0-100L/min RS485 1-5V NPN Alarm LCD Display

Features:

Principle: Thermal MEMS mass flow chip, directly measures mass flow rate, unaffected by pressure fluctuations
> Model Interpretation: AFM0711H00 = AFM07 series, with a range of **0 - 100 L/min**, quick-connect connector, equipped with LCD display, and needle valve-free version

Core parameters

| Range | **0 - 100 L/min (standard air)** |
| Accuracy | ±3% F.S. |
| Repetitiveness | ±1% F.S. |
| Response Time | 50 ms |
| Power Supply | 9 - 24 VDC |
| Typical Power Consumption | 0.85 W |
| Maximum Pressure Resistance | 0.8 MPa |
| Operating Temperature | -10 ~ +60 ℃ |
| Calibration Reference | 25℃, 1 atm air calibration |
| Shell Material | PBT |
| Weight | Approximately 56 g |
| Interface | Φ8 quick plug direct connection (H00 represents no needle valve) |

Output Interface (All three paths available simultaneously)

1. **RS485 Modbus RTU (mainly promoted)**
Default address 0x01, default baud rate 9600; optional 4800/9600/19200/115200, supports multi-machine bus networking
2. **1 - 5V analog voltage output**
3. **NPN collector open-circuit alarm output** (flow upper and lower limit alarm can be set)

Display and Function

- LCD color screen, simultaneously displays **instantaneous flow + cumulative flow**
- Screen supports rotation to adapt to different installation directions
- Built-in multi-gas selection: Air, N2, O2, Ar, CO2, He
- Supports one-click reset of cumulative flow, setting of flow upper and lower limit alarms

Applicable Gases & Typical Uses

Supported: Dry clean, non-corrosive gases (air, N2, O2, Ar, CO2, etc.)

Prohibited: Combustible and explosive gases, oily, dusty, corrosive gases

Typical Scenarios:
Laser equipment nitrogen protection, welding protection gas, laboratory supply gas, pharmaceutical / food process gas, air compressor detection, environmental monitoring, fuel cell, semiconductor blowing, aging test bench

Specifications: