Xi'an Yunyi Instrument Co., Ltd
| Envirment Temperature | -20~+60 ℃ |
| Meter Technology | MEMS Flow Sensor |
| Work Temperature | 10~+55 |
| Payment Terms | L/C, D/A, D/P, T/T, Western Union |
| Output Way | 4-20mA |
| Response Time | 1.8ms |
| Protection | IP50 |
| Measurementtype | Volumetric Flow |
| Productname | Gas Flow Meter |
| Explosion Proof | ExdII BT 6 / ExiaII CT4 |
| Delivery Time | 10 working days |
| Accuracy | ±1.0% |
| Power | 24VDC |
| Supply Ability | 5000 pieces/year |
| Dn Size | 40MM |
| Thread Connection Type | 1/4,1/2,3/8 npt bspp |
| Typical Response Time | 100MS |
| Warranty | 365 days |
| Certification | CE/RoHs |
| Brand Name | Yunyi |
| Place of Origin | China |
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Product Specification
| Envirment Temperature | -20~+60 ℃ | Meter Technology | MEMS Flow Sensor |
| Work Temperature | 10~+55 | Payment Terms | L/C, D/A, D/P, T/T, Western Union |
| Output Way | 4-20mA | Response Time | 1.8ms |
| Protection | IP50 | Measurementtype | Volumetric Flow |
| Productname | Gas Flow Meter | Explosion Proof | ExdII BT 6 / ExiaII CT4 |
| Delivery Time | 10 working days | Accuracy | ±1.0% |
| Power | 24VDC | Supply Ability | 5000 pieces/year |
| Dn Size | 40MM | Thread Connection Type | 1/4,1/2,3/8 npt bspp |
| Typical Response Time | 100MS | Warranty | 365 days |
| Certification | CE/RoHs | Brand Name | Yunyi |
| Place of Origin | China |
Our Roots Flow Meter (also known as Waist Wheel Flow Meter) is a positive displacement volumetric gas meter designed for accurate measurement of natural gas, LPG, CNG, biogas, propane, nitrogen, and other non‑corrosive gases. It operates on the principle of two interlocking waist‑shaped rotors that rotate in precise synchronization, allowing a fixed volume of gas to pass through per rotation.
This design provides high accuracy (±1.0% of reading), a wide turndown ratio, and low pressure loss without requiring long straight inlet/outlet pipes. The meter is available with built‑in temperature and pressure compensation, delivering real gas volume correction for billing or process control. Output options include 4‑20mA, pulse, and RS485 Modbus communication. With an IP65 enclosure and optional explosion‑proof rating, it is suitable for industrial pipelines, city gas networks, petroleum chemical plants, gas storage, and remote monitoring systems.
High Accuracy – ±1.0% reading, suitable for gas trade billing.
Wide Flow Range – Measures from 1.2 m³/h up to 1000 m³/h.
Built-in Temperature & Pressure Compensation – Real gas volume correction.
Multiple Output Options – 4-20mA, pulse, and RS485 Modbus.
Explosion-Proof Design – Safe for natural gas, LPG, and industrial gases.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2007
Total Annual:
1000000-2000000
Employee Number:
150~200
Ecer Certification：
Verified Supplier
YUN YI ,we are professional manufacturer that engaged in the fields of pressure measurement instrument. we have 12 years sensor producing and developing experiences Xi'an Yunyi Instrument Co., Ltd is a professional R&D center and manufacture of measuring instruments.And here's a vari... YUN YI ,we are professional manufacturer that engaged in the fields of pressure measurement instrument. we have 12 years sensor producing and developing experiences Xi'an Yunyi Instrument Co., Ltd is a professional R&D center and manufacture of measuring instruments.And here's a vari...
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