;
Главная > Производители > Siemens > Контрольно-измерительные приборы > Pressure gauge > Transmitter for gauge, absolute and differ. pressure, flow and level > Measurement transducer for basic requirements > SITRANS P250 for differential pressure

SITRANS P250 for differential pressure производства Siemens

SITRANS P250 for differential pressure

The SITRANS P250 transmitter measures the differential pressure of liquids and gases.

The SITRANS P250 transmitter for differential pressure is primarily used in the following industries:

  • Chemical industry
  • Heating, ventilation and air conditioning technology
  • Food industry
  • Mechanical engineering
  • Shipbuilding
  • Water supply
  • High measuring accuracy
  • Sturdy stainless steel enclosure
  • For aggressive and non-aggressive media
  • For the measurement of the differential pressure of liquids and gases
  • Temperature-compensated measuring cell
  • Compact design

SITRANS P250 differential pressure transmitter

Application

Differential pressure transmitter

Liquids and neutral gases

Mode of operation

Measuring principle

Piezo-resistive 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 operating pressure

Output

 

Output signal

 

  • Current output signal

4 ... 20 mA

  • Voltage output signal

0 ... 5 V DC and 0 ... 10 V DC

Load

 

  • 3-wire

> 10 kΩ

  • 2-wire

≤ (UH - 11 V) / 0.02 A

Measuring accuracy

 

Error in measurement at limit setting incl. hysteresis and reproducibility

≤ 1 % of typical full-scale value, see "Measuring range" table

Long-term stability acc. to IEC 60770

≤ 0.5 % of full-scale value/year

Influence of ambient temperature

 

  • Start of scale

≤ 0.6 % / 10 K of full-scale value

(≤ 1.2 % / 10 K for measuring cell 0 ... 0.1 bar (1.45 psi))

  • Full-scale value

≤ 0.22 % / 10 K of full-scale value

(≤ 0.37 % / 10 K for measuring cell 0 ... 0.1 bar (1.45 psi))

Dynamic behavior

Suitable for static and dynamic measurements

Step response time T99

< 5 ms

Load variation

< 50 Hz


Rated conditions

 

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 to IEC 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

 

  • Process connection

Stainless steel 1.4305/AISI 303, CuZn nickel-plated

  • Diaphragm

Ceramic Al2O3 (96 %)

  • Sealing material

FPM (standard), EPDM, NBR, MVQ, CR

Power supply UH

 

Terminal voltage on pressure transmitter

 

  • 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 connection against the other with max. supply voltage.

Certificates and approvals

 

Approval

CE conformity


Measuring range

 

Max. permissible operating pressure
(on either side)

Burst pressure

Max. permissible operating pressure
(on one side)

Accuracy

[bar]

[inH2O]

 

 

 

 

0 ... 0,1

0 ... 40.18

25 bar
(363 psi)

37.5 bar
(544 psi)

0.6 bar
(241 inH2O)

≤ 1,0 %

0 ... 0,2

0 ... 80.37

25 bar
(363 psi)

37.5 bar
(544 psi)

0.6 bar
(241 inH2O)

≤ 0,8 %

0 ... 0,25

0 ... 100.46

25 bar
(363 psi)

37.5 bar
(544 psi)

0.6 bar
(241 inH2O)

≤ 0,5 %

0 ... 0,3

0 ... 120.56

25 bar
(363 psi)

37.5 bar
(544 psi)

0.6 bar
(241 inH2O)

≤ 0,5 %

0 ... 0,4

0 ... 160.74

25 bar
(363 psi)

37.5 bar
(544 psi)

1.2 bar
(482 inH2O)

≤ 0,8 %

0 ... 0,5

0 ... 200.9

25 bar
(363 psi)

37.5 bar
(544 psi)

1.2 bar
(482 inH2O)

≤ 0,5 %

0 ... 0,6

0 ... 241.0

25 bar
(363 psi)

37.5 bar
(544 psi)

1.2 bar
(482 inH2O)

≤ 0,5 %

0 ... 1,0

0 ... 402.0

25 bar
(363 psi)

37.5 bar
(544 psi)

2 bar
(804 inH2O)

≤ 0,5 %

0 ... 1,6

0 ... 643.0

25 bar
(363 psi)

37.5 bar
(544 psi)

3.2 bar
(1286 inH2O)

≤ 0,5 %

0 ... 2,5

0 ... 1005

25 bar
(363 psi)

37.5 bar
(544 psi)

5 bar
(2009 inH2O)

≤ 0,5 %

0 ... 4

0 ... 1607

25 bar
(363 psi)

37.5 bar
(544 psi)

8 bar
(3215 inH2O)

≤ 0,5 %

0 ... 6

0 ... 2411

25 bar
(363 psi)

37.5 bar
(544 psi)

12 bar
(4822 inH2O)

≤ 0,5 %

0 ... 10

0 ... 4019

50 bar
(725 psi)

75 bar
(1088 psi)

20 bar
(8037 inH2O)

≤ 0,5 %

0 ... 16

0 ... 6430

50 bar
(725 psi)

75 bar
(1088 psi)

32 bar
(464 psi)

≤ 0,5 %

0 ... 25

0 ... 10046

50 bar
(725 psi)

75 bar
(1088 psi)

50 bar
(725 psi)

≤ 0,5 %


Main components:

  • Stainless steel enclosure with piezo-resistive ceramic measuring cell and (temperature-compensated) electronics module
  • Process connection made of stainless steel in diverse designs (see Selection and ordering data)
  • Electrical connection through connectors acc. to EN 175301-803-A and round connectors M12, as well as with permanently fixed cable

The pressure transmitter measures the differential pressure of liquids and gases.

Mode of operation

SITRANS P250 pressure transmitter, function diagram

The piezo-resistive measuring cell (ceramic membrane) has a Wheatstone bridge circuit, on which the operating pressure P1 and P2 of the media acts at both ends.

The voltage output from the measuring cell is converted by an amplifier into an output current of 4 to 20 mA or an output voltage of 0 to 5 or 10 V DC.

The output current and voltage are linearly proportional to the input pressure.

SITRANS P250 differential pressure transmitter with socket outlet to EN 175301-803-A, dimensions in mm (inch)

SITRANS P250 differential pressure transmitter with round connector to EN 60130-9, dimensions in mm (inch)

SITRANS P250 differential pressure transmitter with cable, dimensions in mm (inch)

Process connections

∅

Width across flats

L

X

 

[mm]

[inch]

 

[mm]

[inch]

[mm]

[inch]

 

Hose connection for hose (CuZn nickel-plated)

4

0.16

a = 10

20

0.79

61

2.40

6

0.24

a = 10

25

0.99

66

2.60

 

Pipe union with screw-in nipple for outer pipe (CuZn nickel-plated)

6

0.24

a = 10

b = 12

24

0.95

65

2.56

8

0.32

a = 12

b = 14

25

0.99

66

2.60

 

Pipe union with screw-in nipple for outer pipe (stainless steel 1.4305/AISI 303)

6

0.24

a = 10

b = 12

24

0.95

65

2.56

8

0.32

a = 12

b = 14

26

1

67

2.64

 

Male thread G1/8
7/16-20 UNF (CuZn nickel-plated)

-

-

a = 14

18

0.71

59

2.32

 

Female thread G1/8
(stainless steel 1.4305/AISI 303)

-

-

a = 14

12

0.47

53

2

 

Male thread G1/8
(CuZn nickel-plated)

-

-

a = 10
b = 12

20

0.79

61

2.40


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

Connection with voltage output 0 ... 5 V DC (0 ... 10 V DC) and plug to EN 175301-803-A

Connection with voltage output 0 ... 5 V DC (0 ... 10 V DC) and round connector

Connection with voltage output 0 ... 5 V DC (0 ... 10 V DC) and permanently fixed cable

  • Описание : sitrans p250 for differential pressure, accuracy greater than 1%, typically. wetted parts ceramics / stainless steel 1.4301 / ss304 included in delivery: transmitter, mounting bracket and manual. without explosion protection
  • Вес (кг) : 0.7
Код Заказной номер Заказать
71445 7MF1641-.....-.... Заказать
;