Steemco ST1; ST2; ST3

steemco horizontal mount

The EMCO Steemco compact orifice flow meter for steam is a standardised product based on well proven and widely accepted technology. The Steemco meter is a flow 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").
  • No moving parts.
  • Not sensitive to vibrations.
  • Compact design.
  • Easy to install.
  • High accuracy.

Typical Applications

The STEEMCO flow meters measure the flow of saturated and superheated steam within the process industries, including chemical, petro-chemical, pharmaceutical and the power industry. The STEEMCO is based on the principle of measuring velocity in the pipe line, therefore the flow measurement is volumetric. The STEEMCO 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 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 st1 hr without manifold

Construction

Model ST1

The Steemco flow meter model ST1 consists of a primary element based on the differential pressure principle, condensing pots, a 3 valve manifold valve and an electronic differential pressure transmitter with digital signal processing.

Model ST2

The Steemco flow meter model ST2 consists of a primary element based on the differential pressure principle with an all welded integral condensing pot, an integrated 3 valve double flanged manifold valve and an electronic differential pressure transmitter with digital signal processing. The Steemco 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).

steemco st2 hr with manifold

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 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.

Installation Orientation

steemco vu

steemco vd

steemco lhs

steemco rhs

 

 

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 OD Pressure rating Sch. 10S Inner Pipe dia. Sch. 40 Inner Pipe dia. Sch. 80 Inner Pipe dia. ß=05 Bore. ß=06 Bore. B A1 A2
1-1⁄2" 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 ga

Installation Requirements

The Steemco 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 transmitter. If mass flow is required for superheated steam, ask for STEEMCO-MAS and multivariabe transmitter.

Steemco Coding

1. Type 
In AISI 316 with transmitter flange code ST1 
integrated manifold code ST2
Integrated condensing chamber code ST3
   
2. Size 
DN 40 DIN standard code 040
DN 50 DIN standard code 050
DN 65 DIN standard code 065
DN 80 DIN standard code 080
DN 100 DIN standard code 100
DN 125 DIN standard code 125
DN 150 DIN standard code 150
DN 200 DIN standard code 200
DN 250 DIN standard code 250
DN 300 DIN standard code 300
DN 350 DIN standard code 350
DN 400 DIN standard code 400
11⁄2” ANSI standard code 01.5
2” ANSI standard code 002
3” ANSI standard code 003
4” ANSI standard code 004
6” ANSI standard code 006
8” ANSI standard code 008
10” ANSI standard code 010
12” ANSI standard code 012
14” ANSI standard code 014
16” ANSI standard code 016
   
3. Pressure rating 
PN 10 DIN standard code 10
PN 16 DIN standard code 16
PN 25 DIN standard code 25
PN 40 DIN standard code 40
150 lbs ANSI standard code 15
300 lbs ANSI standard code 30
   
4. Facing 
DIN 2526 Form A code 26
DIN 2513 Form R13 code 13 
DIN 2512 Form N code 12
Raised face RF ANSI standard code RF
Flat face FF ANSI standard code FF
   
5. Pipe schedule ( only applicable for ANSI flanges) 
DIN flanges code 00 
Schedule 10S code 10 
Schedule 40 code 40 
Schedule 80  code 80
   
6. β value 
β value 0.5  code 5
β value 0.6  code 6
β value free choice  code 9
   
7. Drain/vent hole Ø3 mm 
Without drain/vent hole  code 0
With drain/vent hole  code 1
   
8. manifold valve 
ST1 - Without  code 0
ST1 - 3 valve manifold  code 1
ST2 - Integrated manifold code 2 
ST3 - Integrated condensing chamber without manifold code 3
ST3 - integrated condensing chamber with manifold code 4
   
9. Mounting Position 
Horizontal pipe right hand code HR
Horizontal pipe left hand code HL
Vertical pipe down code VD
vertical pipe up code VH
   
10. Differential pressure transmitter 
Without  code 0
Included code Original transmitter type no.  

Examples

DN 100 STEEMCO ST1 in stainless steel PN 40 with DIN2526 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:

ST1-100-40-26-00-6-1-1-HR-0

8" STEEMCO ST2 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:

ST2-008-15-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

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