Siemens SITRANS LG240 Operating Instructions Manual

Also see for SITRANS LG240: Operating instructions Operating instructions

63PBD-51041037 SITRANS LG240 - Operating Instructions44285-EN-200212Output variable - Additional current outputFor details on the operating voltage see chapter "Voltage supply"Output signal 4 … 20 mA (passive)Range of the output signal 3.8 … 20.5 mA (default setting)Signal resolution 0.3 μAFault signal, current output (adjustable) Last valid measured value, ≥ 21.0 mA, ≤ 3.6 mAIn order to detect the rarely occurring hardware failuresin the device, we recommend monitoring both interfer-ence values (≥ 21.0 mA, ≤ 3.6 mA)Max. output current 21.5 mAStarting currentƲ for 20 ms after switching on ≤ 10 mAƲ for run-up time ≤ 3.6 mALoad Load resistor, see chapter "Voltage supply"Damping (63 % of the input variable),adjustable0 … 999 sIndication value - Display and adjustment module3)Ʋ Displayed value 1 Filling height LevelƲ Displayed value 2 Electronics temperatureResolution, digital < 1 mm (0.039 in)Measurement accuracy (according to DIN EN 60770-1)Process reference conditions according to DIN EN 61298-1Ʋ Temperature +18 … +30 °C (+64 … +86 °F)Ʋ Relative humidity 45 … 75 %Ʋ Air pressure +860 … +1060 mbar/+86 … +106 kPa(+12.5 … +15.4 psig)Mounting, reference conditionsƲ Min. distance to internal installations > 500 mm (19.69 in)Ʋ Vessel metallic, ø 1 m (3.281 ft), centric mounting, process fit-ting flush with the vessel ceilingƲ Medium Water/Oil (dielectric constant ~2.0)4)Ʋ Mounting Probe end does not touch the vessel bottomSensor parameter adjustment No gating out of false signals carried outTypical deviation - Interface measure-ment± 5 mm (0.197 in)3) The indication values can be assigned individually.4) With interface measurement = 2.0