FEMA费玛压力开关压力变送器Ex-DNS3、Ex-DNS6、DNS06–351 Type series DNS/VNSPressure and vacuum switcheswith high-grade stainless steel sensor system 1.4571
All sensor parts connected to the media are made of stainless steel 1.4571.Range of adjustment Switching diff. Max. allowable Type
(Mean value) pressureSwitching difference not adjustable
-250/+100 mbar 45 mbar 3 bar VNS 301–201
-1*/+0.1 bar 50 mbar 6 bar VNS 111–201
0.04 – 0.25 bar 30 mbar 6 bar DNS 025–201
0.1 – 0.6 bar 40 mbar 6 bar DNS 06–201
0.2 – 1.6 bar 60 mbar 6 bar DNS 1–201
0.2 – 2.5 bar 0.1 bar 16 bar DNS 3–201
0.5 – 6 bar 0.15 bar 16 bar DNS 6–201
1 – 10 bar 0.3 bar 16 bar DNS 10–201
3 – 16 bar 0.5 bar 25 bar DNS 16–201Switching difference adjustable
-250/+100 mbar 70 –300 mbar 3 bar VNS 301–203
-1*/+0.1 bar 90 –550 mbar 6 bar VNS 111–203
0.04 – 0.25 bar 60 –300 mbar 6 bar DNS 025–203
0.1 – 0.6 bar 80 –400 mbar 6 bar DNS 06–203
0.2 – 1.6 bar 100 –600 mbar 6 bar DNS 1–203
0.2 – 2.5 bar 0.15– 1.5 bar 16 bar DNS 3–203
0.5 – 6 bar 0.25– 2.0 bar 16 bar DNS 6–203
1 – 10 bar 0.45– 2.5 bar 16 bar DNS 10–203
3 – 16 bar 0.8 – 3.5 bar 25 bar DNS 16–203Chemical version (housing with surface protection)
Housing with high-grade stainless steel system (1.4571). Degree of protection IP 65.Switching difference not adjustable
-250/+100 mbar 45 mbar 3 bar VNS 301–351
-1*/+0.1 bar 50 mbar 6 bar VNS 111–351
0.04 – 0.25 bar 30 mbar 6 bar DNS 025–351
0.1 – 0.6 bar 40 mbar 6 bar DNS 06–351
0.2 – 1.6 bar 60 mbar 6 bar DNS 1–351
0.2 – 2.5 bar 0.1 bar 16 bar DNS 3–351
0.5 – 6 bar 0.15 bar 16 bar DNS 6–351
1 – 10 bar 0.3 bar 16 bar DNS 10–351
3 – 16 bar 0.5 bar 25 bar DNS 16–351-250/+100 mbar 45 mbar 3 bar Ex-VNS 301
-1*/+0.1 bar 50 mbar 6 bar Ex-VNS 111
0.04 – 0.25 bar 30 mbar 6 bar Ex-DNS 025
0.1 – 0.6 bar 40 mbar 6 bar Ex-DNS 06
0.2 – 1.6 bar 60 mbar 6 bar Ex-DNS 1
0.2 – 2.5 bar 0.1 bar 16 bar Ex-DNS 3
0.5 – 6 bar 0.15 bar 16 bar Ex-DNS 6
1 – 10 bar 0.3 bar 16 bar Ex-DNS 10
3 – 16 bar 0.5 bar 25 bar Ex-DNS 16
DNS 1-201
DNS 1-351
Ex-DNS 3
Chemical version (housing with surface protection)
Housing with high-grade stainless steel system (1.4571). Degree of protection IP 65.
with high-grade stainless steel sensor system 1.4571
All sensor parts connected to the media are made of stainless steel 1.4571.
-version · Degree of protection EEx de IIC T6
* In the case of very high
vacuum, close to the negative
pressure of -1bar which is
only theoretically possible, the
switch can be adjusted only
with reservations on account
of the special conditions of
vacuum technology. The
pressure switch itself will
however not be damaged at
maximum negative pressure.
Range of adjustment Switching diff. Max. allowable Type
(Mean value) pressure
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