APLISENS Sp. z o.o., ul. Morelowa 7

, tel. [phone]

fax [phone], www.aplisens.com.pl, e-mail: aplisens@

.com.pl

, 03-192 Warszawa

aplisens

Version III/2002

S-DIN or S-Clamp type Diaphragm Seals

with standard hygienic connections

Direct

connection

with:

transmitters:

APC-2000,

PC-50,

PC-28,

APR-2000,

PR-54

manometers:

63,

100,

160

∅∅

∅

34.5

34.5

4×

∅

9

Remote

connection

with:

transmitters: APC-2000,

PC-50,

PC-28,

APR-2200

manometers:

63,

100,

160

∅∅

∅

Capillary

from

1

to

3

m

(or

up

to

6

m

in

special

versions)

End

for welding

DIN 11851 connection

Standard size 50 mm

Nut

Diaphragm seal

S-DIN 50 mm

Diaphragm seal

S-Clamp 2"

Clamp

End

for welding

Tri-Clamp connection

Standard size 2"

Version III/2002

APLISENS Sp. z o.o., ul. Morelowa 7

, tel. [phone]

fax [phone], www.aplisens.com.pl, e-mail: aplisens@

.com.pl

, 03-192 Warszawa

aplisens

Applications

The diaphragm seal is a pressure-transmitting diaphragm device. The pressure signal is sent to a connected

pressure measuring device (pressure transmitter, manometer) by means of a manometer liquid which fills the

space between the separating diaphragm of the diaphragm seal and the pressure measuring device. The

purpose of the diaphragm seal is to isolate the pressure measuring device from harmful properties of the

medium, such as:

– low or high temperature, increased viscosity, impurities;

– vibration of the installation (remote diaphragm seal);

– pulsating pressure which might damage the pressure measuring device.
The S-DIN and S-Clamp diaphragm seals have standard hygienic connections which enable measurements

to be taken in aseptic conditions. These seals are typically used for pressure measurement in the food and

pharmaceutical industries.

Maximum range: 0...2.5 MPa.

Recommended range (in kPa)

depending on selected diaphragm seal type and pressure measuring device

Diaphragm seal

type

Transmitters: APC-2000*,

PC-28, PC-50

∅

63 manometer

∅

100 manometer

∅

160 manometer

direct

25

250

600

600

remote

200

600

600

600

* The ranges given in the table for the variable-range APC-2000 transmitter should be taken as regulated ranges.

Note: for measurement ranges lower than those given in the table, we recommend special models of dia-

phragm seal: Clamp 3" and DIN 80 mm.
Additional absolute error of zero caused by ambient temperature fluctuation,

for seal used with a pressure transmitter

Type of diaphragm seal

Absolute error of zero

direct

0.08 kPa / 10°C

remote (2 m capillary)

0.5 kPa / 10°C

For special models of diaphragm seal used with pressure transmitters (larger diameter) thermal errors decrease in pro-

portion to the cube of the active diameter of the separating diaphragm.

An additional error of zero relating to medium temperature fluctuation is dependent on the temperature gradient in the oil-

based diaphragm sealing system, but it is always significantly smaller than the errors given in the table.

Medium temperature range

-30...200°C for remote diaphragm sealing

-20...150°C for direct diaphragm sealing

-30...85°C for operation in ranges to -100 kPa

Material of the separating diaphragm

and connection

316Lss

Special versions

◊

Filled with edible oil (medium temp. -10...150°C)

◊

Diaphragm seals with other dimensions, e.g. DIN 25 mm,

DIN 40 mm, Tri-Clamp 1", Tri-Clamp 1,5", SMS 50 mm

◊

Diaphragm seal with customized connection

◊

Direct diaphragm seal for medium temperatures above

150°C

◊

Others – by arrangement with an Aplisens consultant:

tel. [phone]

Example: PC-28 transmitter, range 0 ÷ 600 kPa, electrical connector, DIN 50 mm remote diaphragm seal,

capillary length 1.5 m.

PC-28 / 0 ÷ 600 kPa / PD / S-DIN 50K / K = 1.5 m

How to order

direct diaphragm seal: pressure measuring device / S-....... / special version (description)

remote diaphragm seal: pressure measuring device / S-.......K / K = ..... m / special version (description)

Transmitter or manometer – use the code

given on the appropriate catalogue sheet

Type and dimension

of diaphragm seal

Capillary

length