This document describes the features and characteristics of the DY and DYA vortex flowmeters produced by Yokogawa Electric Corporation, including high accuracy, high stability, advanced self-diagnostic function, and easy parameter setting.
This manual describes the digital YEWFLO DYA vortex flowmeter, its SSP technology, high accuracy, self‑diagnostic functions, and multi‑variable options with built‑in temperature sensing. It covers the device’s construction, material options, and safety certifications for use in various industrial environments.
Detailed sections include performance specifications, installation requirements, electrical and communication interfaces (4‑20 mA, pulse, FOUNDATION fieldbus, BRAIN, HART), temperature and pressure limits, and optional accessories such as displays and alarm outputs. This manual is written in Chinese.
| Accuracy (liquid) | ±0.75 % of reading |
|---|---|
| Accuracy (gas/steam) | ±1 % of reading |
| Temperature range (general) | -29 °C to 260 °C |
| Temperature range (high‑temp version) | up to 450 °C |
| Analog output signal | 4 ~ 20 mA DC |
| Maximum cable length | 30 m |
| Protection rating | IP67, NEMA 4X |
| Maximum working pressure | 42 MPa |
| Body material | SCS14A stainless steel casting |
The liquid measurement accuracy is ±0.75 % of the reading.
The high‑temperature version can measure up to 450 °C.
It supports FOUNDATION fieldbus, BRAIN, and HART protocols.
The signal cable can be up to 30 m long.