Technical Specifications - Siemens SITRANS P250 Operating Instructions Manual

Technical specifications

SITRANS P250 (7MF1641) Technical data
Applications
Differential pressure Liquids and neutral gases
measurement
Mode of operation
Measuring principle Piezoresistive measuring cell (ceramic diaphragm)
Input
Measured variable Differential pressure
Measuring range 0 ... 0.1 to 0 ... 25 bar
(0 ... 1.45 to 0 ... 363 psi)
Operating pressure ≤ 25 bar at a differential pressure range < 6 bar
≤ 50 bar at a differential pressure range > 10 bar
Burst pressure 1.5 x system pressure
Output
Output signal
● Current output signal
4 ... 20 mA
● Voltage output signal
0 ... 5 VDC and 0 ... 10 VDC
Load
● 3-wire
> 10 kΩ
● 2-wire
≤ (UH - 11 V) / 0.02 A
Measuring accuracy
Dynamic behavior ≤ 1% of full scale value - typical,
(at 25°C / 77°F, including see table " Maximum permitted pressure ranges"
conformity error, hysteresis,
and repeatability)
Long-term drift in accordance ≤ 0.5 % of full scale value
with IEC 60770
Ambient temperature influence
● Start of scale value ≤ 0.6 % / 10K of full scale value (≤ 1.2 % / 10K with
measuring cell 0 ... 0.1 bar (1.45 psi))
● Full scale value
≤ 0.22 % / 10K of full scale value (≤ 0.37 % / 10K with
measuring cell 0 ... 0.1 bar (1.45 psi))
Dynamic behavior Suitability for static and dynamic measurements
Response time T99 < 5 ms
Load alternation < 50 Hz
Conditions of use
Ambient conditions
● Process temperature
- 15 ...+ 85 °C (5 ... 185 °F)
● Ambient temperature
- 15 ...+ 85 °C (5 ... 185 °F)
● Storage temperature
- 40 ...+ 85 °C (-40 ... +185 °F)
Degree of protection to IP65
EN 60529
Mounting position Any
Installation Fastening bracket, included
Construction
Weight approximately 430 g (c. 0.95 lb)
Housing material Stainless steel 1.4305/AISI 303 m
Electrical connection ●
●
●
●
Process connection
●
●
●
Material of the wetted parts
● Process connection Stainless steel 1.4305/AISI 303, CuZn nickel-plated
● Diaphragm Ceramics Al2O3 (96 %)
● Sealant
FPM (standard), EPDM, NBR, MVQ, CR
Auxiliary power
UH Terminal voltage on pressure transducer
● 2-wire, 4 ... 20 mA 11 ... 33 VDC
● 3-wire, 0 ... 5 VDC 11 ... 33 VDC/24 VAC ± 15 %
SITRANS P250 (7MF1641)
A5E02135036-01, 05/2008
Plug connector DIN EN 175301-803-A
Round plug DIN EN 60130-9
Cable 1.5 m
Hose tailpiece Ø 4 mm/6 mm
Pipe union Ø 6 mm/ 8 mm
Male thread 7/16-20 UNF, G1/8
Female thread 1/8-27 NPT (standard), G1/8
SITRANS P250 (7MF1641) Technical data
● 3-wire, 0 ... 10 VDC 18 ... 33 VDC/24 VAC ± 15 %
Current consumption at rated pressure
● 2-wire < 20mA
● 3-wire < 5mA
Reverse polarity protection Short circuit and reverse polarity protected Every
connection to every other one with max. supply
voltage.
Certificates and approvals
Approval CE conformity
Maximum permissible pressure ranges
Measuring range Maximum permitted operating
pressure
[bar] [psi] (at one side)
0... 0,1 0...1.45 0.6 bar
(8.7 psi)
0... 0,2 0...2.9 0.6 bar
(8.7 psi)
0... 0...3.63 0.6 bar
0,25 (8.7 psi)
0... 0,3 0...4.35 0.6 bar
(8.7 psi)
0... 0,4 0...5.8 1.2 bar
(17.4 psi)
0... 0,5 0...7.25 1.2 bar
(17.4 psi)
0... 0,6 0...8.7 1.2 bar
(17.4 psi)
0... 1,0 0...14.5 2 bar (29 psi)
0... 1,6 0...23.2 3.2 bar
(46.4 psi)
0... 2,5 0...36.3 5 bar
(72.5 psi)
0... 4 0...58 8 bar (116 psi)
0... 6 0...87 12 bar
(174 psi)
0... 10 0...145 20 bar
(290 psi)
0... 16 0...232 32 bar
(464 psi)
0... 25 0...363 50 bar
(725 psi)
Burst
pressure measurement
(at both sides)
25 bar (363 psi) 37.5 bar ≤ 1,0 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,8 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,5 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,5 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,8 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,5 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,5 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,5 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,5 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,5 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,5 %
(544 psi)
25 bar (363 psi) 37.5 bar ≤ 0,5 %
(544 psi)
50 bar (725 psi) 75 bar ≤ 0,5 %
(1088 psi)
50 bar (725 psi) 75 bar ≤ 0,5 %
(1088 psi)
50 bar (725 psi) 75 bar ≤ 0,5 %
(1088 psi)
Deviating
3