PRESSURE MEASUREMENT DS 400 Intelligent Electronic Pressure Switch Completely in Stainless Steel with or without Analogue Output ► The electronic pressure switch DS 400 is the successful combination of: piezoresistive stainless steel sensor up to 2 contacts, configurable analogue output in 2- and 3-wire version nominal pressure range from 0 ... 100 mbar up to 0 ... 600 bar and is suitable for universal usage in machine and plant engineering. The rotatable stainless steel globe housing is for hard conditions and predestined difficult installation positions due to its high functionality and robustness. The 4-digit LED display, which is mounted rotatable in the housing, shows the system pressure and allows programming. The configuration works menu controlled and is easy to handle also without previous knowledge. Typical areas of use are: ► machine and plant engineering ► test benches ► environmental engineering In 3-wire-version optionally an analogue output is available with configurable start and end point. Thereby the DS 400 becomes a precise pressure transmitter. 2-wire-version features an analogue output as standard, optionally available with Exprotection. So BD SENSORS is one of the few competitors on the world market offering intelligent, intrinsically safe electronic pressure switches, for the use in explosion hazard areas. 4-digit LED display, rotatable and configurable configuration of contacts (switch on / switch off points, hysteresis / window mode, switch on / switch off delay) analogue output: - 3-wire circuit: option: 4 ... 20 mA or 0 ... 10 V; start and end point adjustable - 2-wire circuit: standard: 4 ... 20 mA Ex-protection optionally special functions (access protection, min. / max. value memory) several mechanical pressure ports industrial standard with reference to accuracy, thermal behaviour and long term stability Electronic Pressure Switch - digital display

DS 400 Electronic Pressure Switch Technical Data Input pressure range Nominal pressure gauge Nominal pressure abs. Permissible overpressure Nominal pressure gauge 1 Nominal pressure abs. Permissible overpressure Output signal / Supply Analogue output 2-wire 3-wire (in preparation) standard: 4 ... 20 mA / VS = 18 ... 41 VDC standard: without options: 4 ... 20 mA / VS = 19 ... 30 VDC Permissible load Response time Contact 3 Number, type Switching current Repeatability Switching frequency Switching cycles Delay time standard: nominal pressure > 0.4 bar: nominal pressure ≤ 0.4 bar: option: nominal...

DS 400 Electronic Pressure Switch Technical Data Mechanical stability Vibration Shock Permissible temperatures Medium Electronics / environment application in zone 0: -20 ... 60 °C application in zone 1 or higher: -25 ... 70 °C Dimensions Standard side display on request not possible for vacuum ranges Total length of devices with nominal pressure range PN > 40 increases by 14 mm! Total length of devices with Ex-protection incr

DS 400 Electronic Pressure Switch Technical Data Electrical connection Materials Pressure port Viewing glass laminated safety glass Seals (media wetted) standard: PN ≤ 40 bar: FKM / PN > 40 bar: NBR option: welded version for pressure ports according to EN 837 with pressure ranges PN between 0,25 bar and 40 bar; others on request Media wetted parts pressure port, seal, diaphragm Miscellaneous Cable capacitance 9 signal line/shield also signal line/signal line: 1,0 µH/m Current consumption (without contacts) 2-wire signal output current: max. 25 mA 3-wire signal output current: max. 45 mA + signal...