Sitrans p measuring instruments for pressure – Siemens SITRANS P User Manual
Page 13
SITRANS P measuring instruments for pressure
Transmitters for gage, absolute and differential pressure
SITRANS P250 for differential pressure
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Siemens FI 01 · 2009
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Schematics
Connection with current output 4 ... 20 mA and plug to EN 175301-803-A
Connection with current output 4 ... 20 mA and round connector
Connection with current output 4 ... 20 mA and permanently fixed cable
Conditions of use
Ambient conditions
• Temperature of medium
-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 acc. to
EN 60529
IP65
Mounting position
Any
Mounting
Mounting bracket, included in
delivery
Design
Weight
Approx. 430 g (approx. 0.95 lb)
Enclosure material
Stainless steel 1.4305/AISI 303
Electrical connection
• Plug EN 175301-803-A
• Circular plug EN 60130-9
• Cable 1.5 m
Process connection
• Hose sleeve 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
Wetted parts materials
Stainless steel 1.4305/AISI 303,
CuZn nickel-plated
• Process connection
Approx. 430 g (approx. 0.95 lb)
• Diaphragm
Ceramic Al
2
O
3
(96 %)
• Sealing material
FPM (standard), EPDM, NBR,
MVQ, CR
Power supply U
H
Terminal voltage on pressure trans-
mitter
• 2-wire, 4 ... 20 mA
11 ... 33 V DC
• 3-wire, 0 ... 5 V DC
11 ... 33 V DC/
24 V AC
±15 %
• 3-wire, 0 ... 10 V DC
18 ... 33 V DC/
24 V AC
±15 %
Current consumption at nominal
pressure
• 2-wire
< 20 mA
• 3-wire
< 5 mA
Protection against polarity reversal
Protected against short-circuit
and polarity reversal. Each con-
nection against the other with
max. supply voltage.
Certificates and approvals
Approval
CE conformity
Measuring range
Max. per-
missible
operating
pressure
(on either
side)
Burst
pressure
Max. per-
missible
operating
pressure
(on one
side)
Accuracy
[bar]
[psi]
0 ... 0.1
0 ... 1.45
25 bar
(363 psi)
37,5 bar
(544 psi)
0.6 bar
(8.7 psi)
≤ 1,0 %
0 ... 0.2
0 ... 2.9
25 bar
(363 psi)
37,5 bar
(544 psi)
0.6 bar
(8.7 psi)
≤ 1,0 %
0 ... 0.25
0 ... 3.63
25 bar
(363 psi)
37,5 bar
(544 psi)
0.6 bar
(8.7 psi)
≤ 0,5 %
0 ... 0.3
0 ... 4.35
25 bar
(363 psi)
37,5 bar
(544 psi)
0.6 bar
(8.7 psi)
≤ 0,5 %
0 ... 0.4
0 ... 5.8
25 bar
(363 psi)
37,5 bar
(544 psi)
1.2 bar
(17.4 psi)
≤ 0,8 %
0 ... 0.5
0 ... 7.25
25 bar
(363 psi)
37,5 bar
(544 psi)
1.2 bar
(17.4 psi)
≤ 0,5 %
0 ... 0.6
0 ... 8.7
25 bar
(363 psi)
37,5 bar
(544 psi)
1.2 bar
(17.4 psi)
≤ 0,5 %
0 ... 1.0
0 ... 14.5
25 bar
(363 psi)
37,5 bar
(544 psi)
2 bar
(29 psi)
≤ 0,5 %
0 ... 1.6
0 ... 23.2
25 bar
(363 psi)
37,5 bar
(544 psi)
3.2 bar
(46.4 psi)
≤ 0,5 %
0 ... 2.5
0 ... 36.3
25 bar
(363 psi)
37,5 bar
(544 psi)
5 bar
(72.5 psi)
≤ 0,5 %
0 ... 4
0 ... 58
25 bar
(363 psi)
37,5 bar
(544 psi)
8 bar
(116 psi)
≤ 0,5 %
0 ... 6
0 ... 87
25 bar
(363 psi)
37,5 bar
(544 psi)
12 bar
(174 psi)
≤ 0,5 %
0 ... 10
0 ... 145
50 bar
(725 psi)
75 bar
(1088 psi)
20 bar
(290 psi)
≤ 0,5 %
0 ... 16
0 ... 232
50 bar
(725 psi)
75 bar
(1088 psi)
32 bar
(464 psi)
≤ 0,5 %
0 ... 25
0 ... 363
50 bar
(725 psi)
75 bar
(1088 psi)
50 bar
(725 psi)
≤ 0,5 %
U
B
Power supply
R
L
Load
I
O
Output current
Connection: 1 (+),
2 (-)
I
O
U
B
R
L
1+
+
2-
1
2
+
Connection: 1 (+),
3 (-)
I
O
Output current
R
L
Load
U
B
Power supply
U
B
R
L
I
O
3-
1+
1
2
3
Connection: 1 (+, brown),
2 (-, green)
I
O
Output current
U
B
Power supply
R
L
Load
U
B
R
L
I
O
2-
1+
+
© Siemens AG 2008