SITRANS P250 (7MF1641)
A5E02135036-01, 05/2008
3
Technical specifications
SITRANS P250 (7MF1641) Technical data
Applications
Differential pressure
measurement
Liquids and neutral gases
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)
≤ 25 bar at a differential pressure range < 6 bar
Operating pressure
≤ 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
(at 25°C / 77°F, including
conformity error, hysteresis,
and repeatability)
≤ 1% of full scale value - typical,
see table " Maximum permitted pressure ranges"
Long-term drift in accordance
with IEC 60770
≤ 0.5 % of full scale value
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
EN 60529
IP65
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
●
Plug connector DIN EN 175301-803-A
●
Round plug DIN EN 60130-9
●
Cable 1.5 m
Process connection
●
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
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) 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)
(at both sides)
Burst
pressure
Deviating
measurement
0... 0,1 0...1.45 0.6 bar
(8.7 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 1,0 %
0... 0,2 0...2.9
0.6 bar
(8.7 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,8 %
0...
0,25
0...3.63 0.6 bar
(8.7 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,5 %
0... 0,3 0...4.35 0.6 bar
(8.7 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,5 %
0... 0,4 0...5.8
1.2 bar
(17.4 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,8 %
0... 0,5 0...7.25 1.2 bar
(17.4 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,5 %
0... 0,6 0...8.7
1.2 bar
(17.4 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,5 %
0... 1,0 0...14.5 2 bar (29 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,5 %
0... 1,6 0...23.2 3.2 bar
(46.4 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,5 %
0... 2,5 0...36.3 5 bar
(72.5 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,5 %
0... 4
0...58
8 bar (116 psi) 25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,5 %
0... 6
0...87
12 bar
(174 psi)
25 bar (363 psi) 37.5 bar
(544 psi)
≤ 0,5 %
0... 10
0...145
20 bar
(290 psi)
50 bar (725 psi) 75 bar
(1088 psi)
≤ 0,5 %
0... 16
0...232
32 bar
(464 psi)
50 bar (725 psi) 75 bar
(1088 psi)
≤ 0,5 %
0... 25
0...363
50 bar
(725 psi)
50 bar (725 psi) 75 bar
(1088 psi)
≤ 0,5 %
