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FEMA Pressure switch pressure transmitter Type series DCM Series selection information | |||||||||||||||||||||||||||||||
Pressure switch for liquid, gas (DCM) | |||||||||||||||||||||||||||||||
Valid for all pressure switch with microswitches of the DCM,VCM,DNM, DNS, DDC series. The technical data of the component tested units deviate in part slightly. (Please refer to type sheet) All pressure switches can operate under vacuum, the device is not damaged by this. < 1 % of the working range (for pressure ranges > 1 bar) Up to 4 g no noteworthy deviations. With sinusoidal pressure application and room temperature, 10 x 106 switching cycles. The expected life time depends strongly upon the type of pressure application, therefore this figure can serve only as rough estimate. With pulsating pressure or pressure impacts in hydraulic systems, pressure surge reduction is recommended. Overvoltage category III, contamination class 3, reference surge voltage 4000 V. The conformity to DIN VDE 0110 (01.89) will be confirmed. The parts of all pressure switches in contact with the medium are oil and grease-free (with the exception of series HCD… und DPS…). The sensors are hermetically encapsulated, they contain no seals (see also additional function ZF 1979, special packing).Higher medium temperatures are possible if the above limit values at the switching mechanism are ensured by suitable measures (e.g.siphon),Vacuum Repetition accuracy of the switching points Vibration strength Mechanical life Isolation values Oil and grease-free Aluminium diecast GD AI Si 12 G| external thread (pressure gauge connection) and G[ internal thread. Internal thread G[ at differential pressure switches DDCM. Floating change-over contact. With rising pressure switching over single-pole from 3–1 to 3–2 8 A at 250 VAC 5 A at 250 VAC inductive 8 A at 24 VDC 0.3 A at 250 VDC arbitrary, preferably vertical (see data sheet) IP 54, Terminal connection IP 65 – – 200 series: Plug connection 300 series: Terminal connection Pg 11 M 16 x 1,5 -25 to +70 °C. (with the exception of DA-series –20…+70 °C and DCM 4016, 4025, 1000, VCM 4156) Adjustable on the spindle. In switching mechanism 300, the terminal box lid must be removed.Adjustable or not adjustable (see type overview) Max,70 °Cbriefly 85 °C Aluminium diecast GD AI Si 12 G| external thread (pressure gauge connection) and G[ internal thread. Internal thread G[ at differential pressure switches DDCM. Floating change-over contact. With rising pressure switching over single-pole from 3–1 to 3–2 3 A at 250 VAC 2 A at 250 VAC inductive 3 A at 24 VDC 0.03 A at 250 VDC vertical IP 65 EEx de IIC T6 tested according to EN 50014 / 50018 / 50019 (CENELEC) Ex-90.C.1059 Terminal connection M 16 x 1,5 -15 to +60 °C Adjustable on the spindle after the terminal box lid is removed. Not adjustable Max. 60 |
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