Astra Automatyka > Produkty > Sensors and transducers > Pressure > Pressure switches and vacuum switches with stainless steel sensors DNS and VNS HONEYWELL
Pressure switches and vacuum switches with stainless steel sensors DNS and VNS HONEYWELL

Pressure switches of the DNS and VNS Honeywell / FEMA series are suitable for monitoring and controlling pressures in chemical plants, process engineering and any situation where the pressure of aggre...

Pressure switches of the DNS and VNS Honeywell / FEMA series are suitable for monitoring and controlling pressures in chemical plants, process engineering and any situation where the pressure of aggressive liquids and gases must be monitored.


Product comparison
Type Setting range Switching differential
(mean value)
Max. permissible
pressure
VNS111 -1…+0.1 bar 50 mbar 6 bar
VNS111-201 -1…+0.1 bar 50 mbar 6 bar
VNS111-203 0.1…+0.6 bar 80-400 mbar 6 bar
VNS111-213 -1…+0.1 bar 50 mbar 6 bar
VNS111-351 -1…+0.1 bar 50 mbar 6 bar
VNS111-353 -1…+0.1 bar 50 mbar 6 bar
VNS111-513 -1…+0.1 bar 50 mbar 6 bar
VNS111-574 -1…+0.1 bar 50 mbar 6 bar
VNS111-576 -1…+0.1 bar 50 mbar 6 bar
VNS301 -250…+100 mbar 45 mbar 3 bar
VNS301-201 -250…+100 mbar 45 mbar 3 bar
VNS301-205 -250…+100 mbar 45 mbar 3 bar
VNS301-206 -250…+100 mbar 45 mbar 3 bar
VNS301-213 -250…+100 mbar 45 mbar 3 bar
VNS301-351 -250…+100 mbar 45 mbar 3 bar
VNS301-353 -250…+100 mbar 45 mbar 3 bar
VNS301-363 -250…+100 mbar 45 mbar 3 bar
VNS301-513 -250…+100 mbar 45 mbar 3 bar
VNS301-576 -250…+100 mbar 45 mbar 3 bar
DNS025 0.04…0.25 bar 30 mbar 6 bar
DNS025-201 0.04…0.25 bar 30 mbar 6 bar
DNS025-203 0.04…0.25 bar 60…300 mbar 6 bar
DNS025-205 0.04…0.25 bar 30 mbar 6 bar
DNS025-313 0.04…0.25 bar 30 mbar 6 bar
DNS025-351 0.04…0.25 bar 30 mbar 6 bar
DNS025-353 0.04…0.25 bar 30 mbar 6 bar
DNS025-513 0.04…0.25 bar 30 mbar 6 bar
DNS025-563 0.04…0.25 bar 30 mbar 6 bar
DNS025-576 0.04…0.25 bar 30 mbar 6 ar
DNS06-201 0.1…0.6 bar 40 mbar 6 bar
DNS06-203 0.1…0.6 bar 80…400 mbar 6 bar
DNS06-213 0.1…0.6 bar 40 mbar 6 bar
DNS06-351 0.1…0.6 bar 40 mbar 6 bar
DNS06-353 0.1…0.6 bar 40 mbar 6 bar
DNS06-355 0.1…0.6 bar 40 mbar 6 bar
DNS06-363 0.1…0.6 bar 40 mbar 6 bar
DNS06-513 0.1…0.6 bar 40 mbar 6 bar
DNS06-563 0.1…0.6 bar 40 mbar 6 bar
DNS06-576 0.1…0.6 bar 40 mbar 6 bar
DNS3-201
0.2…2.5 bar
0.1 bar 16bar
DNS3-203
0.2…2.5 bar
0.15…1.5 bar  16bar
DNS3-205
0.2…2.5 bar
 0.1 bar  16bar
DNS3-206
0.2…2.5 bar
 0.1 bar  16bar
DNS3-213
0.2…2.5 bar
 0.1 bar  16bar
DNS3-351
0.2…2.5 bar
 0.1 bar  16bar
DNS3-353
0.2…2.5 bar
 0.1 bar  16bar
DNS3-513
0.2…2.5 bar
 0.1 bar  16bar
DNS3-563
0.2…2.5 bar
 0.1 bar  16bar
DNS3-576
0.2…2.5 bar
 0.1 bar  16bar
DNS6-201
0.5…6 bar
0.15 bar 16 bar
DNS6-203
0.5…6 bar
0.25…2.0 bar 16 bar
DNS6-205
0.5…6 bar
0.15 bar 16 bar
DNS6-213
0.5…6 bar
0.15 bar 16 bar
DNS6-301
0.5…6 bar
0.15 bar 16 bar
DNS6-306
0.5…6 bar
0.15 bar 16 bar
DNS6-351
0.5…6 bar
0.15 bar 16 bar
DNS6-353
0.5…6 bar
0.15 bar 16 bar
DNS6-355
0.5…6 bar
0.15 bar 16 bar
DNS6-363
0.5…6 bar
0.15 bar 16 bar
DNS6-513
0.5…6 bar
0.15 bar 16 bar
DNS6-563
0.5…6 bar
0.15 bar 16 bar
DNS6-576
0.5…6 bar
0.15 bar 16 bar
DNS10-201 1…10 bar 0.3 bar 16 bar
DNS10-203 1…10 bar 0.45…2.5 bar 16 bar
DNS10-205 1…10 bar 0.3 bar 16 bar
DNS10-303 1…10 bar 0.3 bar 16 bar
DNS10-351 1…10 bar 0.3 bar 16 bar
DNS10-353 1…10 bar 0.3 bar 16 bar
DNS10-355 1…10 bar 0.3 bar 16 bar
DNS10-363 1…10 bar 0.3 bar 16 bar
DNS10-513 1…10 bar 0.3 bar 16 bar
DNS16-201 3…16 bar 0.5 bar 25 bar
DNS16-203 3…16 bar 0.8…3.5 bar 25 bar
DNS16-205 3…16 bar 0.5 bar 25 bar
DNS16-213 3…16 bar 0.5 bar 25 bar
DNS16-351 3…16 bar 0.5 bar 25 bar
DNS16-353 3…16 bar 0.5 bar 25 bar
DNS16-355 3…16 bar 0.5 bar 25 bar
DNS16-513 3…16 bar 0.5 bar 25 bar
DNS16-563 3…16 bar 0.5 bar 25 bar
DNS16-576 3…16 bar 0.5 bar 25 bar
DNS1-201 0.2…1.6 bar 60 mbar 6 bar
DNS1-213 0.2…1.6 bar 60 mbar 6 bar
DNS1-351 0.2…1.6 bar 60 mbar 6 bar
DNS1-353 0.2…1.6 bar 60 mbar 6 bar
DNS1-513 0.2…1.6 bar 60 mbar 6 bar

* At very high vacuums, close to the theoretical maximum of –1 bar, the switch may not be usable in view of the special conditions of vacuum engineering. However, the pressure switch itself will not be damaged at maximum vacuum.

Pressure switches and vacuum switches with stainless steel sensors DNS and VNS HONEYWELL

All components of the sensor DNS and VNS HONEYWELL / FEMA system are made of highquality stainless steel (1.4571) and welded using the latest methods without filler metals. The pressure sensor is gasket free plasma welded.
The DNS and VNS series are calibrated for falling pressure. This means that the adjustable switching pressure on the scale corresponds to the switching point at falling pressure. The reset point is higher by the amount of the switching differential.

Parameter Value
Kind of pressure overpressure, relative
Pressure connection internal thread G1/4, external thread G1/2
Electrical connection plug DIN EN 175301
Protection class IP54
Housing material rugged housing of seawater resistant aluminium die casting GD Al Si 12.
Media temperature -25 ... 70°C
Media temp. limit temperatures up to 85 oC 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 -25 ... 70°C
Switch function/capacity SPDT Microswitch 250 Vac; capacity 5 A inductive, 8 A resistive
Certificates SIL2 according IEC 61508-2
Sensing element material 1.4571
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