Steemco-Mas

steemco vertical mount

The EMCO Steemco-Mascompact orifice mass flow meter for steam

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 STEEMCO-MAS flow meters measure the flow of superheated steam within the process industries, including chemical, petro-chemical, pharmaceutical and the power industry. Mass flow of saturated steam is masured with STEEMCO and a multivariable without a temperature input. The STEEMCO-MAS is based on the principle of measuring velocity pressure and temperature, with mass flow computed by the electronics. The STEEMCO-MAS flow meters are backed by international standards covering flow calculation, manufacturing tolerances, accuracy and installation requirements. This type of fundamental technology is accepted world wide and supported by millions of successful installations.

The Steemco-Mas flow meter features are:

  • 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 output signal linear to flow.
  • Digital indicator for local flow reading.
  • High accuracy.
  • Wide rangeability.
  • Easy to install.
  • Easy to re-calibrate.

steemco mas

Construction

Model Steemco-Mas

The STEEMCO-MAS flow meter consists of a primary element based on the differential pressure principle, condensing pots, a 3 or 5 valve manifold valve and a multivariable transmitter with a temperature sensor. The multi variable transmitter measures the differential pressure and the static pressure and has an input connection to the temperature sensor. The flow computer housed in the transmitter performs the dynamic flow calculation.

The STEEMCO-MAS 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 STEEMCO-MAS 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
  • Temperature : Process : up to 400°C,
  • 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 : +/- 1.2 %
  • 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
  • Allowable differential pressure : max 2,5 bar
  • 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

SizePipe ODPressure ratingInner pipe diameterß = 0,5 Boreß = 0,6 BoreBA1A2
DN 40 48,3 PN 40 43,1 21,5 26,0 90 147 157
DN 50 60,3 PN 40 54,5 27,3 32,0 107 156 166
DN 65 76,1 PN 40 70,3 35,0 42,0 127 166 176
DN 80 88,9 PN 40 82,5 41,0 49,5 142 173 183
DN 100 114,3 PN 16 107,1 54,0 64,0 162 183 193
DN 100 114,3 PN 40 107,1 54,0 64,0 168 186 196
DN 125 139,7 PN 16 131,7 66,0 79,0 192 198 208
DN 125 139,7 PN 40 131,7 66,0 79,0 194 199 209
DN 150 168,3 PN 16 159,3 80,0 96,0 218 211 221
DN 150 168,3 PN 40 159,3 80,0 96,0 224 214 224
DN 200 219,1 PN 16 207,3 104,0 124,4 273 239 249
DN 200 219,1 PN 25 206,5 104,0 124,4 284 244 254
DN 200 219,1 PN 40 206,5 104,0 124,4 290 247 257
DN 250 273 PN 16 260,4 130,0 156,0 329 267 277
DN 250 273 PN 25 258,8 130,0 156,0 340 272 282
DN 250 273 PN 40 258,8 130,0 156,0 352 278 288
DN 300 323,9 PN 10 309,7 155,0 185,0 378 291 301
DN 300 323,9 PN 16 309,7 155,0 185,0 384 294 304
DN 300 323,9 PN 25 307,9 155,0 185,0 400 302 312
DN 300 323,9 PN 40 307,9 155,0 185,0 417 311 321
DN 350 355,6 PN 10 341,4 170,0 204,0 438 321 331
DN 350 355,6 PN 16 339,6 170,0 204,0 444 324 334
DN 350 355,6 PN 25 339,6 170,0 204,0 457 331 341
DN 350 355,6 PN 40 338,0 170,0 204,0 474 339 349
DN 400 406,4 PN 10 392,2 195,0 234,0 489 341 351
DN 400 406,4 PN 16 390,4 195,0 234,0 495 350 360
DN 400 406,4 PN 25 388,8 195,0 234,0 514 359 369
DN 400 406,4 PN 40 384,4 195,0 234,0 546 375 385

 ANSI flanges

Size Pipe Pressure Sch. 10S Sch. 40 Sch. 80 ß=05 Bore. ß=06 Bore. B A1 A2
  OD rating Inner pipe Inner pipe Inner pipe          
      dia. dia. dia.          
11⁄2" 48,3 150lbs 42,7 40,9 37,3 20,0 24,0 85,7 145 155
    300lbs           95,3 150 160
2" 60,3 150lbs 54,7 52,5 49,3 26,0 31,5 104,8 154 164
    300lbs           111,1 158 168
3" 88,9 150lbs 82,8 77,9 73,7 39,0 47,0 136,5 170 180
    300lbs           149,1 177 187
4" 114,3 150lbs 108,2 102,3 97,2 51,0 61,0 174,6 189 199
    300lbs           181,1 193 203
6" 168,3 150lbs 161,5 154,1 146,3 77,0 92,5 222,3 213 223
    300lbs           279,4 242 252
8" 219,1 150lbs 211,5 202,7 193,7 101,0 121,6 279,4 242 252
    300lbs           308 256 266
10" 273 150lbs 264,6 254,5 242,8 127,0 153,0 339,7 272 282
    300lbs           362 283 293
12" 323,9 150lbs 314,7 303,2 289,1 150,0 180,0 409,6 307 317
    300lbs           422,3 313 323
14" 355,6 150lbs 346 333,3 317,5 165,0 198,0 450,9 327 337
    300lbs           485,8 345 355
16" 406,4 150lbs 396,8 381 363,6 190,0 228,0 514,4 359 369
    300lbs           539,8 372 382

Overall Dimensions

steemco mas ga

Installation Requirements

The STEEMCO-MAS 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. If mass flow is required for saturated steam, ask for a multivariabe tranmitter and the STEEMCO meter.

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

Download Manual (Not Available)

If you require further information on this product or would like a quotation, please contact dp-flow on:

email:
sales +44(0)1865 600245