Ultrasonic Liquid Flow Meter PF/U/TTFM/PTFM/DFM/DFS Series

Home
Products
Kansai Automation
Flow Meter etc.
Ultrasonic Liquid Flow Meter PF/U/TTFM/PTFM/DFM/DFS Series
DFS5.1 Doppler Type Flow Switch

DFS5.1 Doppler Type Flow Switch

General Information
Technical Information
Docs
Other Features
Product Video

DFS5.1 Doppler Type Flow Switch
Contact output model.
Easy installation because it equips only one sensor.
Suitable for turbid liquid such as waste water, slurry, sludge etc.
Check the flow velocity change with LED bar graph on the controller.
Applicable pipe diameter φ12.5mm～φ4500mm.

Model	PF330A/330B/330D	PF220A/220B
Power Source	110～240VAC　±10%	110～240VAC　±10%
Battery	Battery Life-20 hours from fully charged, depending on load.	Battery Life-20 hours from fully charged, depending on load.
Allowable Temperature	Controller：-20℃～+50℃ Sensor：PF330A/B -20℃～+135℃ PF330D -20℃～+80℃	Controller：-20℃～+50℃ Sensor：-20℃～+135℃
Pipes	PF330A：13 OD ～ 115mm OD PF330B：50 OD ～ 2000mm OD PF330D：1500 OD ～ 5000mm OD	PF220A：13 OD ～ 115mm OD PF220B：50 OD ～ 1000mm OD
Velocity	0.1m/sec～20m/sec bi-directional	0.1m/sec～20m/sec bi-directional
Display (Flow Velocity)	m/sec、f/sec	m/sec、f/sec
Display (Volumetric Flow)	m³、Gullons、US Gullons、 ℓ、Barrel	m³、Gullons、US Gullons、 ℓ、Barrel
Output	DC0～20mA/4～20mA　0.1%FS One Pulse/sec MAX USB/RS232C	DC0～20mA/4～20mA　0.1%FS One Pulse/sec MAX
Accuracy	13mm～75mm±3%（0.2m/sec over） 75mm以上 ±0.5%～2%（0.2m/sec over）	13mm～75mm±3%（0.2m/sec over） 75mm以上 ±0.5%～2%（0.2m/sec over）

Model	DFM5.1	DFS5.1
Power Source	100～240VAC　50/60Hz 30W 9～32VDC Max 9W（Option）	100～240VAC　50/60Hz 2.0W Max. 12～24VDC Max 3.0W（Option）
Allowable Temperature	Controller：-23℃～+60℃ Sensor：-40℃～+150℃	Controller：-23℃～+60℃ Sensor：-40℃～+150℃
Pipe	12.5 ID ～ 4500mm ID （15mm OD Min）	12.5 ID ～ 4500mm ID （15mm OD Min）
Velocity	0.076m/sec～12.2m/sec bi-directional	0.075m/sec～3m/sec （ON/OFF Adjustment）
Output	DC4～20mA（Resistance Load 1000Ω）
Output Contact	SPDTx2 (AC240V 5A)	DPDTx5
Accuracy	±2% FS Repeatability ±0.1% Linearity ±0.5%	±2% FS Repeatability ±0.1%

Operating Principles

Transit Time Type
Ultrasonic waves are transmitted into a liquid alternately from the 2 sensors attached to the outside of the pipe, and difference between the propagation time of the ultrasonic wave in the upstream direction and the propagation time in the downstream direction is detected to obtain the flow velocity. Then, the flow rate is calculated by multiplying the cross section area of the pipe diameter.

Doppler Type
The sensor transmits ultrasonic into the liquid through the pipe wall. Ultrasonic reflects the granules or air bubbles in the liquid. When the liquid flows, echos come back to the sensor with a different frequency besed on the flow velocity. We can calculate the flow velocity based on the frequency change.

Ultrasonic Liquid Flow Meter PF/U/TTFM/PTFM/DFM/DFS Series

DFS5.1 Doppler Type Flow Switch

Partners