EPSI-STEEM

ES1; ES2

The EMCO EPSI-STEEM compact orifice flow meters measure the flow of saturated and superheated steam within the process industries, including chemical, petro-chemical, pharmaceutical and the power industry. The EPSISTEEM is especially designed for installations with limited space due to the flow conditioning effect created by the 5 hole design. The EPSI-STEEM is based on the principle of measuring velocity in the pipe line, therefore the flow measurement is volumetric. The EPSI-STEEM flow meters are based on international standards and private information covering flow calculation, manufacturing tolerances, accuracy and installation requirements. This new type of bare bone technology enlarge the number of potential successful applications for DP flow meters in world.

The EPSI-STEEM flow meter features are:

• Very short straight pipe run requirement
• Standardised product based on well proven technology.
• Compact design.
• Simple construction.
• Standardised construction means low inventory.
• No moving parts.
• Not sensitive to vibrations.
• The electronics delivers linear to flow output signal.
• Digital indicator for local flow reading.
• High accuracy.
• Wide rangeability.
• Easy to install.
• Easy to re-calibrate.
• Models with integrated manifold valve

Construction

Model ES1

The EPSI-STEEM flow meter model ES1 consists of a primary element based on the differential pressure principle, a condensing pot arrangement, a 3 valve manifold and an electronic differential pressure transmitter with digital signal processing.

Model ES2

The EPSI-STEEM flow meter model ES2 consists of a primary element based on the differential pressure principle, an all welded integrated condensing pot arrangement, a 3 valve manifold and an electronic differential pressure transmitter.

Model ES3

The EPSI-STEEM flow meter model ES3 consists of a primary element based on the differential pressure principle, an all welded integrated condensing pot arrangement, with transmitter mounting flange, 3 valve double flanged manifold and an electronic differential pressure transmitter.

The EPSISTEEM 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 electronic indicator with LCD is available for local flow indication and if required check/change of flow rate (differential pressure).

Principle of Measurement

The EPSI-STEEM is a velocity flow meter. A restriction in a pipe line changes the value of the different energies. Based on the law of energy balance developed by Bernoulli the sum of energies remains constant. Increases 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 expressing the flow velocity. When the physical values of the fluid is known and the inner pipe diameter is established the electronics calculate the flow rate. The flow rate is expressed in an analogue signal 4 - 20 mA or signal for digital communication.

Installation Orientation

Technical Data

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

Sizes

DIN Flanges

ANSI Flanges

Overall Dimensions

Installation Requirements

The EPSI-STEEM flow meter can be mounted in a horizontal or vertical pipe. The condensing pot arrangement shall be mounted horizontally with the outlet pointing downwards. 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 1,2% 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. Mass flow Mass flow measurement of saturated steam is obtainable using EPSI-STEEM with a multi variable differential pressure transmitter. Mass flow measurement of super heated steam : ask for EPSI-STEEM-MAS mass flow meter data sheet.

Typical Applications

Mass flow metering of saturated and superheated steam, with mass flow, temperature and pressure variables transmitted on 4-20mA and HART.

Examples

DN 100 EPSISTEEM ES1 in stainless steel PN 40 with DIN 2526 facing, β value 0,6, with drain hole, for
horizontal right hand mounting and 3 valve double flanged manifold valve type G3H and without
transmitter has following code:
ES1-100-40-26-00-6-1-1-HR-0
8" EPSISTEEM ES2 in stainless steel 150 lbs with RF facing, β value 0,5, without drain hole, with
Integrated manifold, for vertical mounting flow direction downwards has following code:
ES2-008-15-RF-40-5-0-2-VD-0

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