23.402/1 Sauter Components DSD: Differential

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23.402/1
DSD: Differential-pressure switch
How energy efficiency is improved
Demand-led controlling and monitoring, without auxiliary energy.
Areas of application
For controlling and monitoring pressures in liquids, gases and vapours, as well as for monitoring the
flow of heating pumps. Especially suitable for equipment that is subject to vibrations.
Features
•
Pressure range: 0.2 to 16 bar
•
Contact rating: 4 mA, 5 V to 10 A, 250 V
•
Up to 110 °C media temperature
•
Gold-plated silver contacts
•
Adjustable switching difference
•
Sealable
•
Mechanical service life: > 1x 106 switching cycles
PD
Technical description
•
Light-alloy housing with transparent cover made of impact-resistant thermoplastic
•
Ambient temperature: -20 to +70 °C
•
IP 65
•
Standard housing-mounted plug with cable connector for cables of 6 to 10 mm in diameter
bar
Switching
difference
bar
Max. sensor values
bar
Differential-pressure switch with variable switching difference
DSD 137 F001
0,2...1,0
0,20...1,4
6
DSD 140 F001
0,4...2,5
0,40...1,6
10
DSD 143 F001
0,5...6,0
0,45...2,2
12
DSD 152 F001
1,0...16
0,60...3,4
25
Differential-pressure switch with fixed, small switching difference
DSD 134 F101
0,05...0,4
0,04
6
Contact rating:as silver contacts 1)
minimum
as gold-plated contacts 2)
minimum
Permissible vacuum loading
DSD 152
10(3) A, 250 V~
50 W, 250 V=
100 mA, 24 V
160 mA, 50 V
4 mA, 5 V
–0,7 bar
–1,0 bar
PD
Weight
°C
kg
110
110
110
110
0,63
0,63
0,63
0,63
Xs
Range
Xsd
Type
Y03307
3 2
1
B06966
110
0,63
Ambient temperature
Degree of protection
Protection class
–20...70 °C
IP 65 (EN 60529)
I (IEC 60730)
Wiring diagram
Dimension drawing
Fitting instructions
A01499
M06967
MV 505424
Accessories
0190403 005*
0259984 000*
0292110 001*
0296936 000*
Brass connector with cap nut (Serto system), 2 pieces required
Bracket for 3-point fixing
Two throttle screws, Rp 1/8, for arresting pressure surges; stainless steel.
Fixing bracket for top-hat rails EN 60715, 35 × 7,5 or 35 × 15
*)
Dimension drawing or wiring diagram are available under the same number
1)
2)
If under inductive load, take RC circuit into account
If the contacts are loaded with more than 160 mA, 50 V, the gold plating suffers irreparable damage.
They then lose the properties of gold contacts, and operate thenceforth as silver contacts
Operation
When the pressure falls below the lower switching point (variable setpoint XS), the contacts change
over from 1-3 to 1-2. When the pressure rises by the switching difference XSd above the lower switching point, the contacts change from 1-2 to 1-3.
The switching difference can be set externally using a grub screw: one turn changes the switching
difference by approx. 20 % of its whole range.
Sauter Components
7123402003 04
23.402/2 DSD
Additional information
Materials that come into contact with the medium are of stainless steel (material nos. 1.4104, 1.4435, 1.4541).
Additional technical details
Reproducibility of Xs
Influence coefficient on
switching difference 2)
Radio suppressed
Complies with:Directive 2006/95/EC
EMC directive 2004/108/EC
Not covered by the PED directive
1)
2)
0,017
as per EN 55014
EN 60730-1/ EN 60730-2-6
EN 61000-6-1/ EN 61000-6-2
EN 61000-6-3/ EN 61000-6-4
Art. 1.3.6 of the PED
± 2% of the range
cos ϕ = 1:
10 A, 250,000 switching operations
5 A, 400,000 switching operations
2 A, approx. 106 switching operations
cos ϕ = 0.6:
3 A, 400,000 switching operations
cos ϕ = 0.3: 1)
3 A, 250,000 switching operations
2 A, 400,000 switching operations
1 A, 700,000 switching operations
Mechanical life: > 1 × 106 switching operations
cos ϕ < 0.3: substantial reduction in life expectancy; with RC circuitry, life expectancy is as for
cos ϕ > 0.3 (see also technical notes).
see technical notes
Technical notes
RC circuit under inductive load
For the optimum RC circuitry, refer to the specifications supplied by the manufacturers of the relays, contactors etc. If these are not available, the following rule of thumb can be applied:• Capacitance of the RC circuit (μF) is equal to or greater than the operating current (A).
• Resistance of the RC circuit (Ω) is approx. equal to the resistance of the coil (Ω).
B03 772
Influence coefficient on switching difference
The switching difference is slightly dependent on the setpoint. The switching differences stated in the PDS
sheet are typical values at the start of the range. The influence of the setpoint on the switching difference is
worked out thus: (setpoint XS - start of range) × influence coefficient.
Wiring diagram
Dimension drawing
45
80
DSD
10
P
50
25
1 2 3
61
67
A01499a
10
Pg11
166
Rp1/8
Ø4,5
6
Ø45
28
67
Sauter Components
45
48
95
Ø4,5
M06967
7123402003 04
DSD
23.402/3
Accessories
296936
259984
5
25
20
4,5
1,5
4,5
3,5
9
12
5
0,
13
37
10
25
40
32
30
4,5
13
18
M3X6
58
M00654
18
M00166
190403/005
292110
G1/8
24
14
R1/8
Ø6
33
M07633
10
sw14
R1/8
M09870
Sauter Components
Printed in Switzerland
Right of amendment reserved
N.B.: A comma between cardinal
numbers denotes a decimal point
© Fr. Sauter AG, CH-4016 Basle
7123402003 04
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