Delta TDSSCh User Manual
Technical Datasheet
D-Series
Chemical Flanged Seals with Flush Diaphragm
Models: S-Ch
d
TDS-S-Ch-A: FEB 2014
face
Form B
DIN 2526 standard contact
Dm
Dp
Do
Dz
Direct connection with:
40
B
smart and analog pressure and
differential pressure transmitters
Remote connection with:
smart and analog
pressure and differential
pressure transmitters
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)
Æ9
4 holes
34.5
34.5
Dimensions
Version
DN50
DN80
∗ for tantalum 127 lining
Diaphragm
diameter
Dm
60
89
Contact face
diameter
Dp
102
138∗
Partition
diameter
Do
125
160
External
diameter
Dz
165
200
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Thick-
ness
B
24,2
28,9
Thickness
(teflon version)
B
27,7
33,1
Diameter of
openings
d
18
18
Number
of
openings
4
8
D-Series
Models: S-Ch
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 High corrosiveness
s Low or high temperature, increased viscosity, and impurities
s Vibrations of the installation (remote diaphragm seal)
The material of both diaphragms and contact faces for the chemical-resistant diaphragm seals is corrosion resistant,
irrespective of the medium’s chemical composition and its expected concentration and temperature range.
Measuring Ranges
Recommended minimum measuring range (bar)
depending on the type of the set: pressure measuring device - diaphragm seal
Diaphragm
measuring device
Transmitter
Diaphragm material Contact face material Over pressure limit
Monel Monel 40 bar
Hastelloy Hastelloy 40 bar
Nickel Nickel 40 bar
Tantalum Tantalum 16 bar
Tantalum Teflon 16 bar
Titanium Titanium 40 bar
Diaphragm seals with Teflon contact faces are more economical than tantalum seals
Available chemical-resistant materials
seal type
direct 0.4 0.1
remote 1 0.4
Diaphragm seal version Pressure
DN50 PN16 DN80 PN40
Additional absolute zero error resulting from ambient temperature fluctuations,
depending on the type of the set: pressure transmitter - diaphragm seal
Diaphragm seal type
direct 5 mbar 2 mbar
remote (2 m capillary) 10 mbar 4 mbar
Absolute zero error per 10°C for the diaphragm seal
DN50 DN80
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
Special versions
Medium temperature range
-30...180°C for remote diaphragm seal
special versions up to 250°C
-30...150°C for diaphragm seal
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
Models: S-Ch
D-Series
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- Filling liquid – FLUOROLUBE
- Direct diaphragm seal for a medium temp. over
150°C
- Gold plated wetted parts material- after consulting
with Aplisens.
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