Siemens SITRANS LG250 Operating Instructions Manual

Also see for SITRANS LG250: Operating instructions Operating instructions Operating instructions Operating instructions

61PBD-51041048 SITRANS LG250 - Operating Instructions44277-EN-200212Output variableOutput signal 4 … 20 mA/HARTRange of the output signal 3.8 … 20.5 mA/HART (default setting)Fulfilled HART specification 7Signal 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 5 ms after switching on ≤ 10 mAƲ for run-up time ≤ 3.6 mALoad see load under Power supplyDamping (63 % of the input variable),adjustable0 … 999 sHART output values according to HART 7 (default setting)2)Ʋ First HART value (PV) Linearised percentage value, levelƲ Second HART value (SV) Distance to the levelƲ Third HART value (TV) Measurement reliability, levelƲ Fourth HART value (QV) Electronics temperatureIndication value - Display and adjustment module3)Ʋ Displayed value 1 Filling height LevelƲ Displayed value 2 Electronics temperatureResolution, digital < 1 mm (0.039 in)Output 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"2) The output values can be assigned individually.3) The indication values can be assigned individually.