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Catalogue Pressure Transmitter

96 www.bdsensors.com DMK 331P Technical Data DMK 331P Industrial Pressure Transmitter Technical Data Input pressure range Nominal pressure gauge / abs. [bar] 60 100 160 250 400 Overpressure [bar] 100 200 400 400 600 Burst pressure ≥ [bar] 120 250 500 500 650 Output signal / Supply Standard 2-wire: 4 ... 20 mA / VS = 8 ... 32 VDC Option IS-protection 2-wire: 4 ... 20 mA / VS = 10 ... 28 VDC Options 3-wire 3-wire: 0 ... 20 mA / VS = 14 ... 30 VDC 0 ... 10 V / VS = 14 ... 30 VDC Performance Accuracy 1 ≤ ± 0.5 % FSO Permissible load current 2-wire: Rmax = [(VS – VS min) / 0.02 A] Ω current 3-wire: Rmax = 500 Ω voltage 3-wire: Rmin = 10 kΩ Influence effects supply: 0.05 % FSO / 10 V load: 0.05 % FSO / kΩ Long term stability ≤ ± 0.3 % FSO / year at reference conditions Response time 2-wire: ≤ 10 msec 3-wire: ≤ 3 msec 1 accuracy according to IEC 60770 – limit point adjustment (non-linearity, hysteresis, repeatability) Thermal effects (Offset and Span) 2 / Permissible temperatures Thermal error ≤ ± 0.2 % FSO / 10 K in compensated range -20 ... 85°C Permissible temperatures 3 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 filling fluid food compatible oil overpressure: -10 ... 250 °C vacuum: -10 ... 150 °C 2 an optional cooling element can influence thermal effects for offset and span depending on installation position and filling conditions. 3 max. temperature of the medium for overpressure > 0 bar: 150 °C for 60 minutes with a max. environmental temperature of 50 °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 20 g RMS (25 … 2000 Hz) according to DIN EN 60068-2-6 Shock 500 g / 1 msec according to DIN EN 60068-2-27 Filling fluids Standard silicon oil Options food compatible oil (with FDA approval) (Mobil DTE FM 32; Category Code: H1; NSF Registration No.: 130662) others on request Materials Pressure port stainless steel 1.4404 (316 L) Housing stainless steel 1.4404 (316 L) Option compact field housing stainless steel 1.4305 (303) with cable gland brass, nickel plated others on request Seals (media wetted) Standard Option FKM (recommended for medium temperatures ≤ 200 °C) FFKM (recommended for medium temperatures > 200 °C) others on request Diaphragm stainless steel 1.4435 (316 L) Media wetted parts pressure port, seals, diaphragm Explosion protection (only for 4 … 20 mA / 2-wire) Approvals DX 19 - DMK 331P IBExU 10 ATEX 1068 X / IECEx IBE 12.0027X zone 0: II 1G Ex ia IIC T4 Ga zone 20: II 1D Ex ia IIIC T 85°C Da, IP65 Safety technical maximum values Ui = 28 V, Ii = 93 mA, Pi = 660 mW, Ci ≈ 0 nF, Li ≈ 0 µH Permissible temperatures for environment in zone 0: -20 ... 60 °C with patm 0.8 bar up to 1.1 bar in zone 1 or higher: -20 ... 70 °C Connecting cables (by factory) cable capacitance: signal line/shield also signal line/signal line: 160 pF/m cable inductance: signal line/shield also signal line/signal line: 1µH/m

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