Siemens SITRANS P Brochure & Specs page 232

SITRANS P measuring instruments for pressure
Fittings - Accessories
Compensation vessels
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Overview
The compensation vessels prevent the level difference which oc-
curs with pressure changes in the pressure lines and which fal-
sifies the measurement.
2
According to DIN 19211, the temperature in the compensation
vessel must be assumed to be 50 K less than the steam temper-
ature in the pipe when calculating the wall thicknesses. This is
because the temperature in the compensation vessel during op-
eration can only rise up to the saturated steam temperature.
A material acceptance test certificate A to EN 10204-3.1 is avail-
able for the materials from which the compensation vessels are
made.
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Characteristic curves
Permissible operating pressure as a function of the permissible operating
temperature
Selection and Ordering data
Compensation vessel, without certificate
Max. Characteristic
working
pressure
160 bar A
250 bar B
250 bar B
250 bar C
250 bar B
160 bar A
500 bar D
500 bar D
500 bar E
Accessories
Factory test certificate EN 10204-2.2
Material acceptance test certificate EN 10204-3.1
1)
See Figure "Permissible working pressure as a function of the permissible working temperature"
2/232 Siemens FI 01 · 2009
1)
Material Mat. No. Connections
Input
16 Mo 3 1.5415 Threaded socket G½,
form R, DIN 19207
16 Mo 3 1.5415 Welding sleeve
∅ 21 mm × 6.3 mm
16 Mo 3 1.5415 Welding sleeve
∅ 24 mm × 7.1 mm
11 CrMo 9 10 1.7383 Welding sleeve
∅ 24 mm × 7.1 mm
16 Mo 3 1.5415 Welding sleeve
∅ 33.7 mm × 4.5 mm
16 Mo 3 1.5415 Threaded socket G½,
form R, DIN 19207
16 Mo 3 1.5415 Welding sleeve
∅ 21 mm × 6.3 mm
16 Mo 3 1.5415 Welding sleeve
∅ 24 mm × 7.1 mm
11 CrMo 9 10 1.7383 Welding sleeve
∅ 24 mm × 7.1 mm
© Siemens AG 2008
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Dimensional drawings
O
I
Compensation vessel 7MF9015-1.., dimensions in mm
I Input (see Ordering data for dimensions)
O Output (see Ordering data for dimensions)
1 ) 30 mm longer with 7MF9015-5A.
Compensation vessel 7MF9015-5.., dimensions in mm
Output
Threaded socket G½,
form V, DIN 19207
Welding sleeve
∅ 21.3 mm × 6.3 mm
Welding sleeve
∅ 24 mm × 7.1 mm
Welding sleeve
∅ 24 mm × 7.1 mm
Welding sleeve
∅ 24 mm × 7.1 mm
Threaded socket G½,
form V, DIN 19207
Welding sleeve
∅ 21.3 mm × 6.3 mm
Welding sleeve
∅ 24 mm × 7.1 mm
Welding sleeve
∅ 24 mm × 7.1 mm
Output (see Ordering data for dimensions)
Input (see Ordering data for dimensions)
Approx. Approx. Order No.
contents weight
cm³ kg
7 M F 9 0 1 5 -
250 0.8
250 0.8
250 1
250 1
250 0.7
20 1.6
20 1.6
20 1.6
20 1.6
7MF9000-8AB
7MF9000-8AD
7 7 A
1 A
1 B
1 C
1 D
1 E
5 A
5 B
5 C
5 D