Transmitter for gauge, absolute and differ. pressure, flow and level производства Siemens

Полный спектр продукции Siemens.
Более 70 000 наименований.

Отправив нам запрос, вы в кратчайшие сроки получите предложение с ценой и сроками поставки товара.

Measurement transducer for basic requirements

Transmitter for gauge pressure for the paper industry

Transmitter for general requirements

Transmitter for high-end requirements

Transmitter with WirelessHART communication

Transmitters for food, pharmaceuticals and biotechnology

Обзор
Интеграция

Transmitters for pressure, absolute pressure, differential pressure, flow and level, from 1mbar to 700 bar

Different requirements need different transmitters.

With different connection options and different housings - with or without a display.

Whether operation is conventional, smart or through WirelessHART, PROFIBUS PA or FOUNDATION Fieldbus - SITRANS P offers extensive user-friendliness and outstanding performance.

Measurement transducer for basic requirements

SITRANS P200:

Single-range transmitters for relative and absolute pressure
Ceramic measuring cell
For general applications

SITRANS P210:

Single-range transmitters for gauge pressure
Stainless steel measuring cell
For low-pressure applications

SITRANS P220:

Single-range transmitters for gauge pressure
Stainless steel measuring cell, fully-welded version
For high-pressure applications and refrigeration technology

SITRANS P250:

Single-range transmitters for differential pressure
Analog electronics
Available ex stock

SITRANS MPS (submersible sensor):

Transmitters for hydrostatic level measurements

SITRANS P Compact:

Single-range transmitters
Standard ranges
Hygienic design
Range of different aseptic connections available

Transmitter with WirelessHART communication

SITRANS P280:

Wireless communication with WirelessHART
Battery operation
Parameterization using 3 buttons and SIMATIC PDM with HART modem or wireless with Wireless-HART

Transmitters for food, pharmaceuticals and biotechnology

SITRANS P300:

Smart and conventional operation, as well as operation via PROFIBUS or FOUNDATION Fieldbus
Hygienic design
Range of different aseptic connections available
With ATEX, FM and CSA approval

Transmitter for gauge pressure for the paper industry

SITRANS P300 and SITRANS P DS III:

Smart and conventional operation, as well as operation via PROFIBUS or FOUNDATION Fieldbus
With PMC connection for the paper industry
With ATEX, FM and CSA approval

Transmitter for general applications

SITRANS P DS III:

Smart and conventional operation, as well as operation via PROFIBUS or FOUNDATION Fieldbus
Preferably for horizontal differential pressure lines
Intrinsically safe in zone 1 or flameproof enclosure
With ATEX, FM and CSA approval

Transmitter for high-end requirements

SITRANS P500:

Pressure transmitter for differential pressure, flow and level
Smart and conventional operation
High measuring accuracy
Very fast response time
Extremely low long-term drift
Intrinsically safe in zone 1 or flameproof enclosure
With ATEX, FM and CSA approval

Measuring setups with remote seals

The following pages show examples of typical measuring setups for using SITRANS P pressure transmitters with and without remote seals.

Installation

Remote seals of sandwich design are fitted between the connection flange of the measuring point and a dummy flange.

Remote seals of flange design are fitted directly on the connection flange of the measuring point.

The respective pressure rating of the dummy flange or the flanged remote seal must be observed.

The pressure transmitter should always be installed below the connection flange (and always below the lower connection flange in the case of differential pressure transmitters). When measuring at pressures above atmospheric, the pressure transmitter can also be installed above the connection flange. When measuring at pressures below atmospheric, the transmitter must always be installed below the connection flange (and always below the lower connection flange in the case of differential pressure transmitters).

Offset of measuring range

If there is a difference in height between the two connection flanges when measuring with two remote seals, an additional differential pressure will result from the oil filling of the remote seal capillaries. This results in a measuring range offset which has to be taken into account when you set the pressure transmitter.

An offset of the measuring range also arises when pressure transmitters and remote seals are not installed at the same height

Pressure transmitter output

If the level, separation layer or density increase in closed vessels, the differential pressure and hence the output signal of the pressure transmitter also increase.

If the output signal is to fall as the differential pressure rises, you must swap the start of scale with the end of scale.

With open vessels, a rising pressure is usually assigned to an increasing level, separation layer or density.

Influence of ambient temperature

The capillaries between the remote seal and the pressure transmitter should be kept as short as possible to obtain a good transmission response. Steps should also be taken to avoid temperature differences between the individual remote seals.

If the complete setup is exposed to temperature variations, temperature errors will result from the thermally induced change of volume of the filling liquid in the capillaries, in the remote seals and in the connection parts.

Notes

When measuring separation layers, ensure that:

The separation layer is positioned between the two spigots.
The level in the vessel is always above the top spigot.

Possible combinations of pressure transmitters and remote seals

Type of installation	Pressure transmitters	Remote seals
A / B	7MF4010 7MF4013 7MF4033 7MF4034 7MF4035 7MF8023 7MF8024	7MF4900 7MF4910 7MF4920
C1 / C2	7MF4233 7MF4234 7MF4235	7MF4900 7MF4910 7MF4920 (vacuum-proof design in each case)
C1 / C2	7MF4333 7MF4334 7MF4335	7MF4901 7MF4921
D	7MF4433 7MF4434 7MF4435	7MF4903 7MF4923
E	7MF4433 7MF4434 7MF4435	7MF4913
G / H / J	7MF4433 7MF4434 7MF4435	7MF4903 7MF4923

Types of installation for pressure and level measurements (open vessels)

	Installation type A
	Start-of-scale:	p_MA = Ï_FL · g · H_U - Ï_oil · g · H₁
	Full-scale:	p_ME = Ï_FL · g · H_O - Ï_oil · g · H₁
	Installation type B
	Start-of-scale:	p_MA = Ï_FL · g · H_U + Ï_oil · g · H₁
	Full-scale:	p_ME = Ï_FL · g · H_O + Ï_oil · g · H₁
	Legend
	p_MA	Pressure to be set at start-of-scale
	p_ME	Pressure to be set at end-of-scale
	Ï_FL	Density of medium in vessel
	Ï_oil	Density of filling oil in the capillary to the remote seal
	g	Local acceleration due to gravity
	H_U	Minimum level
	H_O	Maximum level
	H₁	Distance between vessel flange and pressure transmitter

Types of installation for absolute level measurements (closed vessels)

	Installation type C₁ and C₂
	Start-of-scale:	p_MA = p_START + Ï_oil · g · H₁
	Full-scale:	p_ME = p_END + Ï_oil · g · H₁
	Legend
	p_MA	Pressure to be set at start-of-scale
	p_ME	Pressure to be set at end-of-scale
	p_START	Pressure at start-of-scale
	p_END	Pressure at end-of-scale
	Ï_oil	Density of filling oil in the capillary to the remote seal
	g	Local acceleration due to gravity
	H₁	Distance between vessel flange and pressure transmitter

Types of installation for differential pressure and flow measurements

	Installation type D
	Start-of-scale:	p_MA = p_START - Ï_oil · g · H_V
	Full-scale:	p_ME = p_END - Ï_oil · g · H_V
	Legend
	p_MA	Pressure to be set at start-of-scale
	p_ME	Pressure to be set at end-of-scale
	p_START	Pressure at start-of-scale
	p_END	Pressure at end-of-scale
	Ï_oil	Density of filling oil in the capillary to the remote seal
	g	Local acceleration due to gravity
	H_V	Distance between spigots

Types of installation for level measurements

	Installation type E
	Start-of-scale:	p_MA = p_FL · g · H_U - Ï_oil · g · H_V
	Full-scale:	p_ME = p_FL · g · H_O - Ï_oil · g · H_V
	Legend
	p_MA	Pressure to be set at start-of-scale
	p_ME	Pressure to be set at end-of-scale
	p_FL	Density of medium in vessel
	Ï_oil	Density of filling oil in the capillary to the remote seal
	g	Local acceleration due to gravity
	H_U	Minimum level
	H_O	Maximum level
	H_V	Distance between spigots

	Installation types G, H and J
	Start-of-scale:	p_MA = p_FL · g · H_U - Ï_oil · g · H_V
	Full-scale:	p_ME = p_FL · g · H_O - Ï_oil · g · H_V
	Legend
	p_MA	Pressure to be set at start-of-scale
	p_ME	Pressure to be set at end-of-scale
	p_FL	Density of medium in vessel
	Ï_oil	Density of filling oil in the capillary to the remote seal
	g	Local acceleration due to gravity
	H_U	Minimum level
	H_O	Maximum level
	H_V	Distance between spigots

Measuring setups without remote seals

The following types of installation are used to measure level, separation level and density in open and closed vessels without the application of remote seals.

Notes

When measuring separation layers, ensure that:

The separation layer is positioned between the two spigots.
The level in the vessel must always be above the top spigot.

When measuring density, ensure that:

At the end of this section is a questionnaire which you can use is used for hydrostatic level measurements, e.g. for measuring the level in steam boilers, steam drums, condensation vessels, etc.

Setup for pressure transmitters for differential pressure, flange mounting (open vessels)

Level measurement
	Start-of-scale:	p_MA = Ï · g · H_U
	Full-scale:	p_ME = Ï · g · H_O
	Legend
	p_MA	Pressure to be set at start-of-scale
	p_ME	Pressure to be set at end-of-scale
	Ï	Density of medium in vessel
	g	Local acceleration due to gravity
	H_U	Minimum level
	H_O	Maximum level

Separation layer measurement
	Start-of-scale:	p_MA = g · (H_U · Ï₁ + (H_O - H_U) · Ï₂)
	Full-scale:	p_ME = Ï₁ · g · H_O
	Legend
	p_MA	Pressure to be set at start-of-scale
	p_ME	Pressure to be set at end-of-scale
	Ï₁	Density of the heavier liquid
	Ï₂	Density of the lighter liquid
	g	Local acceleration due to gravity
	H_U	Minimum level
	H_O	Maximum level

Density measurement
	Start-of-scale:	p_MA = Ï_MIN · g · H_O
	Full-scale:	p_ME = Ï_MAX · g · H_O
	Legend
	p_MA	Pressure to be set at start-of-scale
	p_ME	Pressure to be set at end-of-scale
	Ï_MIN	Minimum density of medium in vessel
	Ï_MAX	Maximum density of medium in vessel
	g	Local acceleration due to gravity
	H_O	Maximum level

Setup for pressure transmitters for differential pressure, flange mounting (closed vessels)

Level measurement, version 1
	Start-of-scale:	Δp_MA = Ï · g · H_U
	Full-scale:	Δp_ME = Ï · g · H_O
	Legend
	Δp_MA	Pressure to be set at start-of-scale
	Δp_ME	Pressure to be set at end-of-scale
	Ï	Density of medium in vessel
	g	Local acceleration due to gravity
	H_U	Minimum level
	H_O	Maximum level

Level measurement, version 2
	Start-of-scale:	p_MA = g · (H_U · Ï - H_V · Ïâ€²)
	Full-scale:	p_ME = g · (H_O · Ï - H_V · Ïâ€²)
	Legend
	p_MA	Pressure to be set at start-of-scale
	p_ME	Pressure to be set at end-of-scale
	Ï	Density of medium in vessel
	Ïâ€²	Density of liquid in the negative pressure line, corresponding to the temperature existing there
	g	Local acceleration due to gravity
	H_U	Minimum level
	H_O	Maximum level
	H_V	Distance between spigots

Separation layer measurement
	Start-of-scale:	Δp_MA = g · (H_U · Ï₁ + (H_O-H_U) · Ï₂ - H_V · Ïâ€²₂)
	Full-scale:	Δp_MA = g · (H_O · Ï₁ - H_V · Ïâ€²₂)
	Legend
	p_MA	Pressure to be set at start-of-scale
	p_ME	Pressure to be set at end-of-scale
	Ï1	Density of heavier liquid with separation layer in vessel
	Ï₂	Density of lighter liquid with separation layer in vessel
	Ïâ€²₂	Density of liquid in the negative pressure line for separation layer measurement, corresponding to the temperature existing there
	g	Local acceleration due to gravity
	H_U	Minimum level
	H_O	Maximum level
	H_V	Distance between spigots