The TLV EF200W-C vortex flowmeter is designed to measure the flow of saturated steam, superheated steam, air, and water. Working on the principle of the Karman vortex phenomenon, it provides highly accurate volume and mass flow measurements. The device is available in two versions: a compact version where the transmitter and sensor form a single mechanical unit, and a remote version where they are mounted in separate locations.

Equipped with a robust IP66/67 (Type 4X) enclosure, the EF200W-C is built to withstand harsh industrial environments. It supports HART protocol communication and features a 4-line illuminated graphic display. The flowmeter is capable of handling fluid temperatures ranging from -200 to +400 °C (-328 to +752 °F) and is compliant with NACE MR0175 and MR0103 standards.

Prevent Mixed Phase and Excessive Flow

This flowmeter is designed to measure both gases and liquids. However, accurate measurement cannot be guaranteed when gases and liquids are mixed together (i.e., gas-liquid mixed phase flow). Additionally, excessive instantaneous or periodical flow rates should be held below the flow meter's maximum flow rate to prevent damage to the sensor, especially during steam startup.

Product Design

1. Electronics compartment cover
2. Display module
3. Main electronics module
4. Cable glands
5. Transmitter housing (incl. HistoROM)
6. I/O electronics module
7. Terminals (spring loaded terminals, pluggable)
8. Connection compartment cover
9. Sensor

Installation Conditions

Mounting Location and Orientation

The direction of the arrow on the sensor nameplate helps you to install the sensor according to the flow direction. Vortex meters require a fully developed flow profile as a prerequisite for correct volume flow measurement.

Orientation	Compact version	Remote version
Vertical orientation	Supported (Note 1)	Supported
Horizontal orientation, transmitter head up	Supported (Note 2, 3)	Supported
Horizontal orientation, transmitter head down	Supported (Note 4)	Supported
Horizontal orientation, transmitter head at side	Supported	Supported

Note 1: In the case of liquids, there should be upward flow in vertical pipes to avoid partial pipe filling.Note 2: Danger of electronics overheating! If the fluid temperature is ≥ 200 °C (392 °F), this orientation is not recommended for compact versions.Note 3: In the case of hot media (e.g., steam ≥ 200 °C), use head down or head at side orientation.Note 4: In the case of very cold media (e.g., liquid nitrogen), use head up or head at side orientation.

Inlet and Outlet Runs

To attain the specified level of accuracy, minimum inlet and outlet runs must be maintained depending on upstream flow obstructions.

If the required inlet runs cannot be observed, it is recommended to install a specially designed flow conditioner. The flow conditioner is fitted between two pipe flanges and generally reduces the inlet run needed to 10 × DN or 13 × DN with full accuracy.

Thermal Insulation

For optimum temperature measurement and mass calculation, heat transfer at the sensor must be avoided for some fluids. When insulating, ensure that a sufficiently large area of the housing support remains exposed to protect the electronics from overheating.

Technical Data

Flow Measuring Ranges (SI Units)

The following specified values are the largest possible flow measuring ranges for each nominal diameter. Depending on the fluid properties and environmental influences, the measuring range may be subject to additional restrictions.

DN [mm]	Liquids [m³/h]	Gas/Steam [m³/h]
15	0.06 to 4.9	0.3 to 25
25	0.18 to 15	0.9 to 130
40	0.45 to 37	2.3 to 310
50	0.75 to 62	3.8 to 820
80	1.7 to 140	8.5 to 1800
100	2.9 to 240	15 to 3200
150	6.7 to 540	33 to 7300

Performance Characteristics (Volume Flow)

Reynolds number range	Measured value deviation	Incompressible (Standard)	Compressible (Standard)
Re₁ to Re₂	A2	< 10 %	< 10 %
Re₂ to Re_max	A1	< 0.75 %	< 1.0 %

(Accuracy specifications valid up to 75 m/s)

Materials

• Measuring tubes: Stainless cast steel, CF3M/1.4408 (Compliant with NACE MR0175 and MR0103)
• DSC sensor (wetted parts): Stainless steel 1.4404, 316, and 316L
• Seals: Sigraflex foil™ (BAM-tested for oxygen applications)
• Housing support: Stainless steel, 1.4408 (CF3M)
• Transmitter housing: Aluminum, AlSi10Mg, coated

Flow Rate Data (Saturated Steam Excerpt)

Unit: kg/h

Press. (MPaG)	Temp. (°C)	15 mm (Min-Max)	25 mm (Min-Max)	50 mm (Min-Max)	100 mm (Min-Max)
0.1	120.4	5 - 40	14 - 183	52 - 689	190 - 2521
0.5	158.9	8.3 - 112	24 - 512	87 - 1927	317 - 7047
1.0	184.1	11 - 199	31 - 911	116 - 3424	423 - 12522
2.0	214.9	15 - 373	42 - 1702	158 - 6397	577 - 23391
3.0	235.7	18 - 549	51 - 2505	191 - 9413	700 - 34420