DCM06 40 mbar 165 mbar 190 mbar 140 mbar DCM025 20 mbar 140 mbar 160 mbar 120 mbar DCM1 40 mbar 240 mbar 280 mbar 200mbar DCM3 0,1 bar 0,65 bar 0,75 bar 0,55bar DCM6 0,15 bar 0,95 bar 1,2 bar 0,8 bar DCM10 0,25 bar 1,6 bar 1,85 bar 1,35bar DCM16 0,3 bar 2,0 bar 2,3 bar 1,7bar DCM25 0,6 bar 4,0 bar 4,6 bar 3,4 bar DCM40 0,9 bar 6,0 bar 6,9 bar 5,1bar DCM63 1,3 bar 8,5 bar 9,8 bar 7,2 bar DNM025 35 mbar 215 mbar 240 mbar 180 mbar VCM095 40 mbar 300 mbar 340 mbar 260mbar VCM101 40 mbar 260 mbar 300 mbar 220 mbar VCM301 20 mbar 100 mbar 120 mbar 80 mbar VNM111 50 mbar 310 mbar 360 mbar 260 mbar

EX-DWR06,EX-DWR1,EX-DWR3,EX-DWR6,EX-DWR625,EX-DWR16,EX-DWR25,EX-DWR40,DWR06-203,DWR1-203,DWR3-203,DWR6-203,DWR625-203,DWR16-203,DWR25-203,DWR4-203,DWR06,DWR1,DWR3,DWR6,DWR625,DWR16,DWR25,DWR40,DWR06-206,DWR1-206,DWR3-206,DWR6-206,DWR625-206,DWR16-206,DWR25-206,DWR40-206,DWR06-205,DWR1-205,DWR3-205,DWR6-205,DWR625-205,DWR16-205,DWR25-205,DWR40-205,DNS06-201,DNS06-203,DNS16-203,VNS301-201,P180-100

Pressure data in all FEMA documents refers to relative pressure. That is to say, it concerns pressure differentials relative to atmospheric pressure. Overpressures have a positive sign, vacuums a negative sign. Permissible working pressure (maximum permissible pressure) The maximum working pressure is defined as the upper limit at which the operation, switching reliability and water tightness are in no way impaired (for values see Product summary). Bursting pressure (test pressure) Type-tested products undergo a pressure test certified by TÜV affirming that the bursting pressure reaches at least the values mentioned in the Product summary. During the pressure tests the measuring bellows are permanently deformed, but the pressurized parts do not leak or burst. The bursting pressure is usually a multiple of the permissible working pressure. Setting range Pressure range in which the cutoff pressure can be set with the setting spindle.

Pressure data for a pressure switchbased on the example of DWR625: Setting range: 0.5-6 bar Perm. working pressure: 20 bar Bursting pressure: >100 bar

Switching differential The switching differential (hysteresis) is the difference in pressure between the switching point (SP) and the reset point (RSP) of a pressure switch. Switching differential tolerances occur due to tolerances in the microswitches, springs and pressure bellows. Therefore the data in the product summaries always refers to average values. In the case of limiter functions the switching differential has no significance, as one is only interested in the switching point at which cutoff occurs, not the reset point. For a controller function, i. e. in the case of pressure switches used to switch a burner, pump etc. on and off, a pressure switch with an adjustable switching differential should be chosen. The switching frequency of the burner or pump can be varied by changing the switching differentia