User guide

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Pressure switches
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Maximum pressure limiter with selfmonitoring sensor and internal relock
For steam and hot water.
Maximum pressure limiter of 'special construction' (SDB)
Kind of pressure overpressure, relative
Pressure connection internal thread G1/4, external thread G1/2
Electrical connection Plug DIN 43650
Protection class IP54
Housing material rugged housing of seawater resistant aluminium die casting GD Al
Si 12.
Sensing element material 1.4104 + 1.4571
Media temp. -20 ... 70
o
C
Media temp. limit temperatures up to 85
o
C are allowable for short periods. Higher
temperatures are possible, provided that the limit is safeguarded
by suitable measures (e.g. water tube trap, see Accessories for
Pressure Switches / Transmitters)
Ambient temperature -20 ... 70
o
C
Ambient temp. limit at temperatures below 0
o
C, ensure that no water condensation
can arise in the sensor and in the switching device
Switch function/capacity SPDT Microswitch 250 Vac; capacity 5 A inductive, 8 A resistive
Certificates • TUEV-SDB-04-134 according VdTUEV Memorandum
Pressure 100/1
• CE0035BN0007 according Directive 97/23/EC (Module B + D)
• SIL3 according IEC 61508
Pressure interlock/Reset maximum press./button
Pressure adjustment range Switching differential Max. pressure Type
bar bar bar
0,2 ... 1,6 0,12 5 SDBAM1
0,4 ... 2,5 0,15 5 SDBAM2,5
1,2 ... 6 0,4 10 SDBAM6
1,2 ... 6 0,6 20 SDBAM625
3 ... 16 0,8 20 SDBAM16
6 ... 32 3 45 SDBAM32
Syphon for high temperature, steel, U-shape (for more accessories, see Accessories
for Pressure Switches / Transmitters)
U430B