Catalogue Siemens - flowmeters
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© Siemens AG 2007
SITRANS F flowmeters
SITRANS F
■ Overview
Criteria for selection of flowmeter
Each method for measuring flow has specific properties, and each flow measuring point is characterized by specific require­ments. The table shown below compares the properties of the various measuring instruments and thus provides assistance in selection of the optimum device.
This section of the field device catalog includes the following in­struments for measuring flow:
• Electromagnetic
• Coriolis mass flow
• Ultrasonic
• Variable area meter
• Orifice plate
• Flap
• Rotary-piston meters and professional drum meters
To measure concentration in binary mixtures, it is possible to evaluate the sound velocity measurements of the ultrasonic flow method. The SITRANS F has been specially developed for use with alcohol/water mixtures.
Measuring principle
Electromagnetic
Coriolis
Ultrasonic
Orifice plate
Rotary-piston meter
Variable area meter
Medium
Liquid (conductive)
Liquid or gas
Liquid
Liquid, vapor, gas
Liquid
Liquid or gas
Nominal diameter
DN 2 ... 2000 (0.08" ... 78")
1.5 ... 150 mm
(0.06" . 6")
DN 50 ... DN 4000 (2" ... 160")
DN 10 ... 1000
(0.4" . 40")
DN 15 ... 80
e/2-... 3")
DN 10 . 100 (0.4" . 4")
G/" ... G3"
Temperature range
°C (°F)
-40 ... +200 (-40 ... +392)
-50 ... +180
(-58 . +356)
-200 ... +250
(-328 ... +482)
-200 . +500 (-328 . +932)
-30 . +300 (-22 . +572)
-20 . +300 (-4 . +572)
Max. pressure
bar (psi)
160 (2320), optional higher
Up to 410 (Up to 5950)
40 (580)
430 (6235)
315 (4569)
63 (914)
40 (580)
Accuracy
%
± 0.25 or ± 0.5
± 0.1 or ± 0.15
± 0.5 ... ± 2
± 0.5 ... ± 2
±0.2 ... ±0.5
± 2
Repeatability
%
0.1 . 0.2
0.05
0.2
0.5
0.005
0.5
Dynamic response
1:100
1:100
1:100
1:6
1:10
1:10
Start-of-scale value
m/s (ft/s)
0 (0)
0 (0)
0.1 (0.33)
Ra > 500
0.3 (0.98)
0.2
Full-scale value
Re < 108
• For liquids
m/s (ft/s)
0.25 . 10 (0.825 . 33)
10 (32.8)
10 (32.8)
3
3
3.5 (11.4)
• For vapors/gas­es
m/s (ft/s)
Approx. 300
(1000)
50/25 (164/82)
60 (197)
Measured values
• Volume flow
•
•
•
•
•
•
• Sound velocity
•
• Sound ampli­tude
•
• Density
•
• Mass flow
•
•
• Bidirectional measurement
•
•
•
•
Use
• For custody transfer
•
•
•
•
• As batching system
•
•
•
• In viscosity range
mPa-s (cp)
0.1 . 100,000
(0.1 ... 100,000)
0 ... 100,000 (0 ... 100,000)
0 ... 350
(0 ... 350)
0 . 10
(0 . 10)
0.3 . 350,000
(0.3 ... 350,000)
0.5 . 100
(0.5 ... 100)
Mains
Mains or battery
2-wire
non
non
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