DNS/VNS Pressure switches and vacuum switches with stainless steel sensors (1.4571)


Pressure switches of the DNS 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. All components of the sensor 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.
SIL 2 according IEC 61508-2

Datasheet
User Manual
Add to your Quote List
Kind of pressure vacuum, relative
Pressure connection internal thread G1/4, external thread G1/2
Electrical connection Plug DIN EN 175301
IP class IP54
Housing material rugged housing of seawater resistant aluminium die casting GD Al Si 12.
Media temp. -25 … 70 oC
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 oC
Ambient temp. limit at temperatures below 0 oC, 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
Optional functions add the type numbers below to the listed type numbers for extra functionality as described

• -301: terminal connection housing, IP65
• -307: two microswitches, switching in parallel or in succession, fixed switching interval, terminal connection case, IP65
• -217: two microswitches, 1 plug, switching in succession, adjustable switching interval
• -213: gold-plated contacts, switching capacity: max. 24 Vdc, 100 mA, min. 5 Vdc, 2 mA. And others not available with adjustable switching difference.
• -351: protection class IP65 and switching housing with surface protection (chemical version)
• -513: gold-plated contacts, switching differential permanent, IP65, switching capacity: max. 24 Vdc, 100 mA, min. 5 Vdc, 2 mA; suitable isolating switching amplifier necessary, degree of protection Ex-i
Certificates SIL2 according IEC 61508-2
Medium type agressive liquid or gas
Scale calibration falling pressure
Pressure adjustment range -1 … 0.1 bar
Switching diff. 50 mbar
Max. pressure 6 bar
Sensing element material Stainless Steel

 

Fixed pressure hysteresis
Pressure adjustment range Adj. switching diff. Switching diff. Max. pressure Type
bar bar bar bar
0.04 … 0.25 — 0.03 6 DNS025-351
0.1 … 0.6 — 0.04 6 DNS06-201
0.2 … 1.6 — 0.06 6 DNS1-201
0.2 … 2.5 — 0.1 16 DNS3-201
0.5 … 6 — 0.15 16 DNS6-201
1 … 10 — 0.3 16 DNS10-201
Adjustable pressure hysteresis
Pressure adjustment range Adj. switching diff. Switching diff. Max. pressure Type
bar bar bar bar
0.1 … 0.6 0.08 … 0.6 — 6 DNS06-203
1 … 10 0.5 … 2.5 — 16 DNS10-203

 









DNS/VNS Pressure switches and vacuum switches with stainless steel sensors (1.4571)
Technical advice: 03303 / 50 40 66

Technical advice for this product


    In accordance with the General Data Protection Regulation (GDPR), we are obliged to inform you about the collection of data. We meet this obligation by referring to our privacy notice.



    DNS/VNS Pressure switches and vacuum switches with stainless steel sensors (1.4571)

    DNS/VNS Pressure switches and vacuum switches with stainless steel sensors (1.4571)

    Pressure switches of the DNS 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. All components of the sensor 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.
    SIL 2 according IEC 61508-2

    Datasheet
    User Manual
    Add to your Quote List
    Kind of pressure vacuum, relative
    Pressure connection internal thread G1/4, external thread G1/2
    Electrical connection Plug DIN EN 175301
    IP class IP54
    Housing material rugged housing of seawater resistant aluminium die casting GD Al Si 12.
    Media temp. -25 … 70 oC
    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 oC
    Ambient temp. limit at temperatures below 0 oC, 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
    Optional functions add the type numbers below to the listed type numbers for extra functionality as described

    • -301: terminal connection housing, IP65
    • -307: two microswitches, switching in parallel or in succession, fixed switching interval, terminal connection case, IP65
    • -217: two microswitches, 1 plug, switching in succession, adjustable switching interval
    • -213: gold-plated contacts, switching capacity: max. 24 Vdc, 100 mA, min. 5 Vdc, 2 mA. And others not available with adjustable switching difference.
    • -351: protection class IP65 and switching housing with surface protection (chemical version)
    • -513: gold-plated contacts, switching differential permanent, IP65, switching capacity: max. 24 Vdc, 100 mA, min. 5 Vdc, 2 mA; suitable isolating switching amplifier necessary, degree of protection Ex-i
    Certificates SIL2 according IEC 61508-2
    Medium type agressive liquid or gas
    Scale calibration falling pressure
    Pressure adjustment range -1 … 0.1 bar
    Switching diff. 50 mbar
    Max. pressure 6 bar
    Sensing element material Stainless Steel

     

    Fixed pressure hysteresis
    Pressure adjustment range Adj. switching diff. Switching diff. Max. pressure Type
    bar bar bar bar
    0.04 … 0.25 — 0.03 6 DNS025-351
    0.1 … 0.6 — 0.04 6 DNS06-201
    0.2 … 1.6 — 0.06 6 DNS1-201
    0.2 … 2.5 — 0.1 16 DNS3-201
    0.5 … 6 — 0.15 16 DNS6-201
    1 … 10 — 0.3 16 DNS10-201
    Adjustable pressure hysteresis
    Pressure adjustment range Adj. switching diff. Switching diff. Max. pressure Type
    bar bar bar bar
    0.1 … 0.6 0.08 … 0.6 — 6 DNS06-203
    1 … 10 0.5 … 2.5 — 16 DNS10-203

     









    Technical advice: 03303 / 50 40 66

    Technical advice for this product


      In accordance with the General Data Protection Regulation (GDPR), we are obliged to inform you about the collection of data. We meet this obligation by referring to our privacy notice.



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