CST-TFM Turbine flow meter

Flow measurement

The CST-TFM Turbine Flow Meter is a high-performance flow measurement instrument engineered for demanding industrial applications across Europe and worldwide, fully compliant with CE requirements. Featuring a wide turndown ratio of up to 1:50, the CST-TFM delivers accurate, repeatable readings across a broad flow range. Its non-magnetic carrier detector provides excellent precision, with repeatability of ±0.1% FS, ensuring stable and dependable performance in critical processes. Built for harsh operating environments, the meter offers strong anti-interference capability and low pressure loss. A fast dynamic response time of just 5 ms allows real-time monitoring of rapid flow changes, making it ideal for processes where timing and accuracy are essential. Designed for durability, the CST-TFM operates reliably across an extreme temperature range of -40°C to +150°C. An optional explosion-proof (ATEX-compatible) version is also available for use in hazardous areas.

Technical Specifications

Parameter	Specification
Measuring Range Ratio	1:10, 1:20, 1:30, 1:40, 1:50
Detector Type	Non-magnetic carrier detector
Repeatability	±0.1% FS
Accuracy Class	±1% FS, ±0.5% FS
Pressure Resistance	Max 400 bar
Medium Temperature	-20°C to +85°C / -40°C to +125°C / -40°C to +150°C
Ambient Temperature	-20°C to +85°C
Power Supply	18–30 VDC
Signal Output	Pulse, 4–20 mA, 0–10 V; Modbus RS485 (optional)
Response Time	5 ms
Electrical Protection	Reverse polarity, short-circuit, and overload protection
Signal Interface	M12 connector
Ingress Protection	IP67
Explosion-Proof Option	Available
Filter Accuracy (recommended)	80–300 μm

Connection & Flow Range

Diameter (DN)	Standard Flow Range (L/min)	Threaded (bar)	External Thread (bar)	Flange (bar)	Thread Type
DN4	0.6 – 4.5	400	400	—	1/2″
DN6	1.6 – 10	400	400	—	1/2″
DN10	3 – 20	400	400	—	1/2″
DN12	6 – 60	400	400	—	1/2″
DN15	10 – 100	400	400	100	1/2″
DN20	13 – 130	300	300	100	3/4″
DN25	17 – 170	300	300	100	1″
DN32	25 – 250	250	250	100	1-1/4″
DN40	33 – 330	160	160	100	1-1/2″
DN50	66 – 660	100	—	150	2″
DN65	116 – 1160	—	—	150	—
DN80	166 – 1660	—	—	150	—
DN100	332 – 3320	—	—	200	—

Dimensional Specifications

Three body styles are available:

GM — External thread connection
GF — Internal thread connection
FC — Flange connection

Detailed dimensions (length, diameter, thread size, flange hole spacing, etc.) are available for each DN size from DN4 to DN100 — see the full technical datasheet or contact us for CAD drawings.