Flemco Compact Orifice

F1&F2

The EMCO compact orifice range of flow meters measure most liquids and gases.The FLEMCO meter is a compact orifice assembly designed to slip between DIN and ANSI flanges, and is designed for compact mounted dp cells. With an installation length of 32mm it can be installed in existing systems simply and easily, and incorporates the dp flow priciple. d.p. metering enables easy re-calibration routines for process operators, negating the need for expensive flow metering spares and external flow recalibration services.

Benefits

• Sizes ranging from DN 40 (1½") up to DN 400 (16").
• Standardised product based on well proven and widely accepted technology.
• No moving parts.
• Not sensitive to vibrations.
• Compact design.
• Easy to install.
• High accuracy.

Typical Applications

The FLEMCO flow meters measure the flow of most liquids and gases within the process industries, including chemical, petro-chemical, pharmaceutical and the power industry.

The FLEMCO is based on the principle of measuring velocity in the pipe line,therefore the flow measurement is volumetric.

The FLEMCO flow meters are backed by international standards covering flow calculation, manufacturing tolerances, accuracy and installation requirements.

This type of bare bone technology is accepted world wide and supported by millions of successful installations.

The FLEMCO flow meter features are:

• Standardised product based on well proven technology.
• Compact design.
• Simple construction.
• Free choice for horizontal or vertical pipe run.
• Standardised construction means low inventory.
• No moving parts.
• Not sensitive to vibrations.
• The electronics delivers output signal linear to flow.
• Digital indicator for local flow reading.
• High accuracy.
• Wide rangeability.
• Easy to install.
• Easy to re-calibrate.

Construction (F2 and F1 shown)

Model F1

The FLEMCO flow meter model F1 consists of a primary element based on the differential pressure principle, a 3 valve manifold valve and an electronic differential pressure transmitter with digital signal processing.

Model F2

The FLEMCO flow meter model F2 consists of a primary element based on the differential pressure principle with an integrated 3 valve manifold valve and an electronic differential pressure transmitter with digital signal processing. The FLEMCO flow meter is mounted between flanges in sizes from DN 40 (11⁄2") to DN 400 (16") in pressure ratings up to PN 40 (300 lbs).

Accessories

Remote Mounting Kit type RMK is available if remote mounting of electronics is required in case of difficulty accessibling pipeline or if there are elevated process temperatures. The customer has to provide the stainless steel instrument tube Ø 12 x 1 mm between flow meter and electronics. Remote electronic indicator with LCD is available for local flow indication and if required check/change of flow rate (differential pressure).

Principle of Measurement

The FLEMCO is a velocity flow meter. A restriction in a pipe line changes the value of respective momentum energies, in terms of static and dynamic pressure. Based on the laws of energy balance developed by Bernoulli, the sum of the energies remain constant. Increasing the velocity in the pipe line, decreases the pressure in the restriction. The pressure differential between the inlet pressure and the pressure in the restriction is measured and expressed as flow velocity. When the physical values of the fluid are known and the inner pipe diameter is established the electronics calculates the flow rate. The flow rate is expressed in an analogue signal 4 - 20 mA signal or via digital communication.

Technical Data

• Sizes : DN 40 - DN 400, 11⁄2" - 16", larger sizes on request
• Pressure rating : up to PN 40, 300 lbs, higher pressure ratings on request
• Simple construction.
• Temperature : Process : -50 - +150°C,
• higher temperature with Remote Mounting Kit
• Mounting style : Between flanges according to DIN or ANSI standards
• Flange facing : flat face (standard), raised face, DIN 2512 N, DIN 2513 R
• Overall length : 32 mm
• Material : Stainless steel AISI 316, others on request
• Design and calculation standards : ISO 5167, ASME MFC-3M.
• Vent or drain hole : On request
• β (d/D) : 0,5 and 0,6; other β on request.
• Accuracy : +/- 1 %
• Rangeability : 8:1
• Repeatability : better than 0,1 %
• Pressure loss : typical 150 mbar for liquid flow, and 50 mbar for gas flow (values are given at full flow)
• Reynolds No : Re > 5000
• Output signal : analogue 4 - 20 mA or Digital communication via protocol, HART, PROFIBUS, Fieldbus Foundation or others.
• Local indicator (option): LCD showing flowing units or %
• Power supply : 14 - 36 Vdc, typical 24 Vdc.
• Max load (24 Vdc) : 700 Ohm
• Enclosure : IP 67
• Ex protection : intrinsically safe EEx ia IIC T6,Explosion proof EEx d IIC T6
• Temperature : Ambient : -40 - +80°C

Sizes

DIN Flanges

ANSI Flanges

Overall Dimensions

Installation Requirements

The FLEMCO flow meter can be mounted in a horizontal or vertical pipe. For liquid flow in a horizontal pipe the electronics shall be mounted below the pipe. For gas flow in a horizontal pipe the electronics shall be mounted above the pipe. To insure high accuracy of measurement, long straight pipe runs up-stream from the flow meter is necessary. The required straight pipe run depends on the disturbance upstream. To maintain the 1% accuracy the minimum straight pipe run upstream shall be 14 x inner pipe diameter and 6 x downstream If an additional inaccuracy of 1⁄2 % is acceptable the required straight pipe runs are reduced to half of the above values. If mass flow required due to changing process conditions ask for the ORIMAS mass flow meter data sheet. Saturated and superheated steam is covered by STEEMCO flow meters

Flemco Coding

Examples

DN 100 FLEMCO F1 in stainless steel PN 40 with DIN 2526 facing, β value 0,6, without drain/vent hole and with 3 valve type G3H double flanged manifold valve and without transmitter has following code: F1-100-40-26-00-6-0-1-0

8" FLEMCO in stainless steel 150 lbs with RF facing with β value 0,5, with drain/vent hole, with integrated 3 valve manifold and Yokogawa differential pressure transmitter type EJX 110A has following code: F2-008-15-RF-40-5-1-2-EJX110A Remote mounting kit type RMK is ordered separately.

Works with:-

Differential pressure transmitters:-IDP10; IDP15; IDP25; IDP31; IDP50
And all our Absolute Pressure and Gauge Pressure transmitters, Temperature sensors and mass flow computers.
MultiVariable Transmitters :- IMV25, IMV30

Supplied by DP-Flow