Delta TDSSP User Manual

Technical Datasheet

D-Series

Flanged Seals with Flush Diaphragm

Models: S-Ch

L

TDS-SP-A: FEB 2014

Remote connection with:

smart and analog
pressure and differential
pressure transmitters

Dm

d1

K

D

Direct connection with:

40

d

smart and analog pressure and
differential pressure transmitters

DIN 2512 Form N standard contact face

(DN50 PN40)

Acc. PN-EN-1092-1:2010 Typ B1

(DN80 PN40, DN100 PN40)

Length of cover:
54 mm for capillary £ 3 m
84 mm for capillary > 3 m

Capillary from 1 to 3 m
(special versions up to 6 m)

4 × Æ9

34.5

34.5

Version

DN50 PN40/
2’’ANSI 150

DN80 PN40
3’’ ANSI 150
DN100 PN40
4’’ ANSI 150

Dimensions

Diaphragm

diameter

Dm

59
59
89
75
89
89

Contact face

diameter

d1

102

92
138
127
162
158

Diameter of
bolt circle

K

125

120,5

160

152,5

190

190,5

External

diameter

D

165
150
200
190
235
230

Thickness

d

22
20
24
24
24
24

Diameter

of holes

L

18
20
18
20
22
20

Number
of holes

4
4
8
4
8
8

Models: S-P

D-Series

www.delta-controls.com

Application

The diaphragm seal is a pressure transmitting, diaphragm-type device. The pressure signal is sent to the cooperating
pressure measuring device (pressure transmitter, pressure gauge) through manometric liquid filling the space between the
separating diaphragm of the seal and the pressure measuring device. The diaphragm seal task is to isolate the pressure
measuring device from damaging impacts caused by either medium or installation:

s Low or high temperature, increased viscosity, and impurities
s Vibrations of the installation (remote diaphragm seal)

Measuring Ranges

Recommended minimum measuring range (bar),

depending on the type of the set: pressure measuring device - diaphragm seal

Pressure

measuring device

Smart

transmitters∗

DPCE-28

*The ranges given in the table for the smart transmitters should be taken as set ranges

Additional absolute zero error resulting from ambient temperature fluctuations,

depending on the type of the set: pressure transmitter - diaphragm seal

Diaphragm seal type

DN50 / 2’’ DN80/ 3’’ DN100 / 4’’

direct 0.5 mbar 0.4 mbar 0.4 mbar
remote (2 m capillary) 3 mbar 1 mbar 1 mbar

Diaphragm

seal type

direct 0.25 0.1 0.1

remote (2 m) 1 0.25 0.25

direct 0.1 0.1 0.1

remote (2 m) 1 0.25 0.25

Absolute zero error per 10°C for the diaphragm seal

DN50 / 2’’ DN80 / 3’’ DN100 / 4’’

Diaphragm seal version

An additional zero error, resulting from
temperature fluctuations in a medium,
depends on the temperature gradient in
the oil-based diaphragm sealing
system. The error value is, in any case,
significantly smaller than the error value
shown in the table.

Temperature range of measured medium

Remote diaphragm seal Direct diaphragm seal

Manometric liquid Underpressure measurements Overpressure measurements

high-temperature (DC) -10...150°C -10...315°C -30...150°C
low-temperature (AK) not recommended for measurement

of pressures < 0.5 bar ABS

Note: When operating with an ambient temperature of < -15°C, heating of capillaries filled with DC fluid is recommended.

Maximum pressure for PN40 – 40 bar
Maximum pressure for ANSI 150 – 150 psi

Material of diaphragm and flange 316Lss

Important:

- contact face in diaphragram seal DN50 have a milled slot for a gasket (acc. to DIN 2512 FormN). Version without any
slot available on request. (acc. to DIN 2526 FormE)

- standard outlet capillary from flange:
direct mounted diaphragm seal - axial
remote mounted diaphragm seal - radial

-60...200°C

Special versions

- Other standard ANSI or DIN

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

- Direct diaphragm seal for medium temp. over 150°C

- Others

Recommendations

The essential metrological problem with diaphragm seal operational use is the absolute thermal zero error, which results
from the thermal expansion of the manometer liquid. The expansion effect must be compensated for by the separating
diaphragm’s flexibility.

To minimise this effect, it is advisable to:

s Use capillaries which are as short as possible - in this way, the volume of manometer liquid will be reduced
s Use seals with greater diameters in order to maximise the flexibility of the separating diaphragm
s Place the capillaries in places in which the temperature fluctuations will be minimal

Models: S-P

D-Series

www.delta-controls.com