Industrial plants need reliable, permanent flow measurement on circulating water systems for control and efficiency. The YF-C6 fixed wall-mount meter installs on the outside of operating pipes and continuously delivers flow, totalization and alarms to the control room.
The challenge
- Circulating water lines run continuously and cannot be stopped.
- Permanent monitoring requires standard control integration.
- Operators need alarms for abnormal flow.
- Inline meter replacement would mean costly downtime.
The solution: YF-C6
The YF-C6 is a fixed transit-time meter powered from 24 VDC, with analog, serial and alarm outputs for permanent installation. See the YF-C6 specifications →
- DN25-DN2000 pipe range.
- ±1.0% accuracy, 0.20% repeatability.
- 24 VDC power at about 5 W.
- 4-20 mA analog and RS485 Modbus RTU.
- OCT high/low alarm/pulse and relay output.
Configuration used in this application
| Meter | YF-C6 fixed transit-time |
|---|---|
| Pipe size | DN25-DN2000 (1″-80″) |
| Accuracy | ±1.0% (0.5-5.0 m/s) |
| Flow velocity | 0.1-12.0 m/s |
| Power supply | 24 VDC @ 5 W |
| Analog output | 4-20 mA, max load 600 Ω |
| Communication | RS485, Modbus RTU |
| Alarm / relay | OCT high/low alarm & pulse; relay 30 VDC |
How it is deployed
- Choose a permanent location on a straight circulating-water section.
- Mount the transducers and fixed converter, then verify signal quality.
- Run 24 VDC and connect 4-20 mA/RS485 and the alarm relay.
- Configure flow ranges, totalization and high/low alarms in the control system.
What the operator gets
- Continuous, reliable flow and totalization.
- Direct integration with plant control and alarms.
- No downtime to install and no pressure loss.
- Stable long-term measurement with no wetted wear.
Frequently asked questions
Is the YF-C6 suitable for permanent installation?
Yes, it is a fixed 24 VDC meter with 4-20 mA, RS485 Modbus RTU and an alarm relay designed for continuous monitoring.
Can it be fitted without stopping circulation?
Yes, the transducers clamp onto the outside of operating pipes with no shutdown or pressure loss.
Does it provide alarm contacts?
Yes, it offers OCT high/low alarm and pulse plus a relay output.
Have a similar requirement?
Send us your pipe size, pipe material, fluid, temperature and quantity. Our engineers will recommend the right configuration and reply with factory-direct wholesale/OEM pricing in English.
Browse our complete range on the Products page.

