User guide

24-13
Standard Pressure Switches
16
17
18
19
20
21
22
24
23
25
26
27
28
For monitoring vacuum of non-aggressive liquids and gaseous media.
Fixed pressure hysteresis
Adjustable pressure hysteresis
Vacuum switch for liquid, gas (VCM)
Kind of pressure vacuum, 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.
Media temp. -25 ... 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 -25 ... 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
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 (with the
exception of VCM4156), IP65
• -217: two microswitches, 1 plug, switching in succession,
adjustable switching interval (with the exception of VCM4156)
• -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, degree of protection EEx-i
Pressure adjustment
range
Adjustable switching
differential
Switching differential Max. pressure Sensing element
material
Type
bar bar mbar bar
-0,015 ... 0,006 – 2 1 Perbunan + 1.4301 VCM4156
-0,25 ... 0,1 – 25 1,5 Copper + Brass VCM301
-0,25 ... 0,1 – 45 3 1.4104 + 1.4571 VNM301
-1 ... 0,1 – 45 3 Copper + Brass VCM101
-0,9 ... 0,5 – 50 3 Copper + Brass VCM095
-1 ... 0,1 – 50 6 1.4104 + 1.4571 VNM111
Pressure adjustment
range
Adjustable switching
differential
Switching differential Max. pressure Sensing element
material
Type
bar bar mbar bar
-0,25 ... 0,1 0,03 ... 0,2 – 1,5 Copper + Brass VCMV301
-0,25 ... 0,1 0,07 ... 0,5 – 3 1.4104 + 1.4571 VNMV301
-1 ... 0,1 0,08 ... 0,35 – 3 Copper + Brass VCMV101
-0,9 ... 0,5 0,09 ... 0,4 – 3 Copper + Brass VCMV095
-1 ... 0,1 0,09 ... 0,65 – 6 1.4104 + 1.4571 VNMV111
Syphon for high temperature, steel, U-shape (for more accessories, see Accessories
for Pressure Switches / Transmitters)
U430B