F211x-Ex Insert Type Explosion-proof Thermal Mass Flow Meter
Product Advantages：Passed national explosion-proof certification Measurement Range：0(0.1) … 250 Nm/s Turndown Ratio：1:2500
F211x-Ex flow meter is based on thermal measurement technology. It can measure the standard flow, mass flow, consumption, and gas temperature directly. Explosion-proof structure design, having certificate issued by the state: Explosion-proof class: Ex db IIC T6 Gb / Ex tb IIIC T80°C Db Protection code: IP67 No moving parts, stable signal, vibration proof, high reliability, long-term measuring accuracy Full-digital signal processing is used instead of the conventional analog bridge design, resulting in a wider range and more accurate measurement The low measuring limit can reach 0.1Nm/s, and the turndown ratio can reach 1:2500. It has a wider measuring range than common flow meters on the market, making it suitable for measuring extremely volatile flow, low-flow bypass, and the gas consumption of single equipment With the innovative, intelligent diagnosis technology, it can sense the sensor pollution online and protect the sensor from overheating
- Full-digital signal processing, higher accuracy, long-term stability
- Based on the thermal flow measurement principle, it’s not required to compensate gas pressure and temperature, integrated temperature measurement
- With an ultra-wide 1:2500 turndown ratio, the measuring range is from 0.1 Nm/s to 250 Nm/s
- Explosion-proof class: Ex db IIC T6 Gb / Ex tb IIIC T80°C Db
- Protection code: IP67
- The capacitive touch 2.0″ IPS LCD with an ultra-wide view
- Bluetooth function for wireless flowmeter configuration and data transmission
- Standard Modbus RTU (RS485) interface, 4 to 20 mA current and pulse output
- Insert type F211x-Ex:
Suitable for pipes with diameters from DN20 to DN1000
Suitable for compressed air, nitrogen, oxygen, carbon dioxide, and other non-condensing gas flow measurement. Ideal for low-flow monitoring, gas consumption measurement, and industrial applications requiring explosion-proof protection.
| Flow | Operating Environment | ||
|---|---|---|---|
| Measuring Range | 0(0.1) … 250 Nm/s | Environment Temperature | -30 … +60 °C |
| Accuracy | ±(1.5% RD + 0.3% FS) [1% RD Option] | Medium Temperature | -40 … +80 °C |
| Sampling Rate | > 20 Samples / sec | Operating Pressure | F211x-Ex: 0 … 1.7 MPa(a) |
| Medium | Compressed air, nitrogen, oxygen,carbon dioxide and other non-condensing gases | ||
| Reference Condition | 20 °C, 1 bar(a) -ISO 1217 (Configurable) | ||
| Output | Explosion-proof Class & Protection Code | ||
| 4~20 mA Output (Standard) | Flow rate/Temperature (Configurable) | Explosion-proof Class | Ex db IIC T6 Gb/Ex tb IIIC T80°C Db |
| Pulse Output (Standard) | Consumption / Alarm | Protection Code | IP67 |
| Digital Output (Standard) | Modbus RTU (RS485) | ||
| Wireless Communication | Bluetooth (Standard) Wi-SUN / IOT-4G (Option,choose one of two) | ||
| Connector | Wiring Terminal | ||
| Power | Other | ||
| Power | 18 … 30VDC 5W @ 24VDC | Process Connection | G1/2″ (ISO 228-1) (F211x-Ex Insert type) |
| EMC | Compliant with IEC 61326-1 | ||
| Pole / Pipe Section Material | SUS304 (Standard) SUS316 (Option) | ||
| Display | |||
| Display | 2.0″ IPS LCD with capacitive touch | ||
