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Catalogue Pressure Switch

40 www.bdsensors.com DS 400P Electronic Pressure Switch Technical Data Input pressure range 1 Nominal pressure gauge / abs. [bar] -1 ... 0 0.1 0.16 0.25 0.4 0.6 1 1.6 2.5 4 6 10 16 25 40 Overpressure [bar] 5 0.5 1 1 2 5 5 10 10 20 40 40 80 80 105 Burst pressure ≥ [bar] 7.5 1.5 1.5 1.5 3 7.5 7.5 15 15 25 50 50 120 120 210 Vacuum resistance PN ≥ 1 bar: unlimited vacuum resistance PN < 1 bar: on request 1 consider the pressure resistance of fitting and clamps Contact 2 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 3 standard: nominal pressure < 0.4 bar: ≤ ± 0.5 % FSO nominal pressure ≥ 0.4 bar: ≤ ± 0.35 % FSO option 1: nominal pressure ≥ 0.4 bar: ≤ ± 0.25 % FSO Repeatability ≤ ± 0.1 % FSO Switching frequency 2-wire: max. 10 Hz / 3-wire: 50 Hz Switching cycles > 100 x 106 Delay time 0 ... 100 sec 2 with IS-protection max. 1 contact possible 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 with IS-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) 4 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) 4 permissible load: Rmin = 10 kΩ response time: < 30 msec Without analogue output VS = 15 ... 36 VDC Accuracy 3 standard: nominal pressure < 0.4 bar: ≤ ± 0.5 % FSO nominal pressure ≥ 0.4 bar: ≤ ± 0.35 % FSO option 1: nominal pressure ≥ 0.4 bar: ≤ ± 0.25 % FSO 3 accuracy according to IEC 60770 – limit point adjustment (non-linearity, hysteresis, repeatability) 4 with turn-down of span the analogue signal is adjusted automatically to the new measuring range Thermal errors (offset and span) 5 / Permissible temperatures Nominal pressure PN [bar] -1 … 0 < 0.40 ≥ 0.40 Tolerance band [% FSO] ≤ ± 0.75 ≤ ± 1.5 ≤ ± 0.75 in compensated range [°C] -20 ... 85 0 ... 50 -20 ... 85 Permissible temperatures 6 medium: -40 ... 125 °C for filling fluid silicon oil -10 ... 125 °C for filling fluid food compatible oil electronics / environment: -40 ... 85 °C storage: -40 ... 100 °C Permissible temperature medium for cooling element 300°C filling fluid silicon oil overpressure: -40 … 300 °C vacuum: -40 ... 150 °C 7 filling fluid food compatible oil overpressure: -10 ... 250 °C vacuum: -10 ... 150 °C 5 an optional cooling element can influence thermal effects for offset and span depending on installation position and filling conditions 6 max. temperature of the medium for nominal pressure gauge > 0 bar: 150 °C for 60 minutes with a max. environmental temperature of 50 °C 7 also for Pabs < 1 bar 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 (DIN EN 60068-2-6) G 1/2": 20 g RMS (25 ... 2000 Hz) others except G 1/2": 10 g RMS (25 … 2000 Hz) Shock (DIN EN 60068-2-27) G 1/2": 500 g / 1 msec others except G 1/2“: 100 g / 1 msec Filling fluids Standard silicon oil Optional food compatible oil (with FDA approval) (Mobil DTE FM 32; Category Code: H1; NSF Registration No.: 130662) others on request Materials Pressure port / Housing stainless steel 1.4404 (316 L) others on request Viewing glass laminated safety glass Seals Standard Optional FKM (recommended for medium temperatures ≤ 200 °C) FFKM (recommended for medium temperatures > 200 °C) others on request Clamp, dairy pipe, Varivent® : without Diaphragm stainless steel 1.4435 (316L) Media wetted parts pressure port, seal, diaphragm DS 400P Technical Data

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