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Catalogue Pressure Switch

11 www.bdsensors.com DS 401 Electronic Pressure Switch Technical Data Input pressure ranges Nominal pressure gauge [bar] -1…0 0.4 0.6 1 1.6 2.5 4 6 10 16 25 40 60 100 160 250 400 600 Nominal pressure abs. [bar] - - 0.6 1 1.6 2.5 4 6 10 16 25 40 60 100 160 250 400 600 Level gauge [mH2O] - 4 6 10 16 25 40 60 100 160 250 400 600 - - - - - Overpressure [bar] 4 1 2 2 4 4 10 10 20 40 40 100 100 200 400 400 600 800 Burst pressure ≥ [bar] 7 2 4 4 5 5 12 12 25 50 50 120 120 250 500 500 650 880 Vacuum resistance PN ≥ 1 bar: unlimited vacuum resistance PN < 1 bar: on request Contact 1 Number, type standard: 1 PNP contact option: 2 independent PNP contacts Max. switching current 4 ... 20 mA / 2- and 3-wire: contact rating 125 mA, short-circuit resistant; VSwitch = VS - 2V 0 ... 10 V / 3-wire: contact rating 500 mA, short-circuit resistant Accuracy of contacts 2 ≤ ± 0.5 % FSO Repeatability ≤ ± 0.2 % FSO Switching frequency 2-wire: max. 10 Hz / 3-wire: 50 Hz Switching cycles > 100 x 106 Delay time 0 ... 100 sec 1 with Ex-protection max. 1 contact possible 2 accuracy according to IEC 60770 – limit point adjustment (non-linearity, hysteresis, repeatability) Analogue output (optionally) / Supply 2-wire current signal 4 ... 20 mA / VS = 13 ... 36 VDC permissible load: Rmax = [(VS – VS min) / 0.02 A] Ω response time: < 10 msec 2-wire current signal, Ex-protection 4 ... 20 mA / VS = 13 ... 28 VDC permissible load: Rmax = [(VS – VS min) / 0.02 A] Ω response time: < 10 msec 3-wire current signal 4 ... 20 mA / VS = 24 VDC ± 10 % adjustable (turn-down of span 1:5) 3 permissible load: Rmax = 500 Ω response time: < 30 msec 3-wire voltage signal 0 … 10 V / VS = 24 VDC ± 10 % adjustable (turn-down of span 1:5) 3 permissible load: Rmin = 10 kΩ response time: < 30 msec Without analogue output VS = 15 ... 36 VDC Accuracy 2 ≤ ± 0.5 % FSO 3 with turn-down of span the analogue signal is adjusted automatically to the new measuring range Thermal effects (Offset and Span) / Permissible temperatures Thermal error ≤ ± 0.2 % FSO / 10 K in compensated range -25 ... 85 °C Permissible temperatures medium: -40 ... 125 °C electronics / environment: -40 ... 85 °C storage: -40 ... 100 °C 4 for pressure port of PVDF the minimum permissible temperature is -30 °C Electrical protection Short-circuit protection permanent Reverse polarity protection no damage, but also no function Electromagnetic compatibility emission and immunity according to EN 61326 Mechanical stability Vibration 10 g RMS (25 ... 2000 Hz) according to DIN EN 60068-2-6 Shock 500 g / 1 msec according to DIN EN 60068-2-27 Materials Pressure port / housing 1.4404 (316L) PVDF (for PN ≤ 60 bar, G1/2” open port ) Housing 1.4404 (316L) Display housing stainless steel 1.4301 (304) Viewing glass laminated safety glass Seals standard: FKM option: EPDM (PN ≤ 160 bar), NBR others on request Diaphragm ceramics Al2O3 96 % Media wetted parts pressure port, seals, diaphragm DS 401 Technical Data

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