聪明的可编制方案天然气流integrat

Intelligent programmable natural gas flow integrated controller adopt advanced microprocessor for smart control, mainly suitable use to flow measurement, integration and control for various natural gas, and with automatic compensation function. when operating, it only need to simply input correspondence parameter, immediately can carry out high accurate measurement and automatic compensation operation.Main technical parametersInput signalAnalog quantity thermocouple: standard thermocouple --- K, E Resistance: standard thermo-resistance ---- Pt100 Current: 0 10 mA, 4 mA 20 mA etc. (input resistance≤250Ω) Voltage: 0 5 V, 1 V 5 V, mV etc. (input impedance≥250 KΩ) Switch quantity start, stop, clean Input signal switch temperature compensation: Pt 100, K, E, 0 10 mA, 4 20 mA, 0 5 V, 1 5V (can free switch) Pressure compensation: 0 10 mA, 4 20 mA, 0 5 V, 1 5 V (can free switch) Flow input: 0 10 mA, 4 20 mA, 0 5 V, 1 5 V (can free switch)Output signalAnalog quantity DC 4 20 mA (load resistance≤500Ω) DC 0 10 mA (load resistance≤750Ω) DC 1 5 V (load resistance≥250KΩ) DC 0 5 V (load resistance≥250KΩ) Switch quantity Relay control output ---- ON/OFF with return difference Contact capacity: AC 220V/3A; DC 24V/5A (resistive load) Communication mode RS –232C, RS—485 Baud rate – 300 9600 bps (free set) Feed output DC 24 V, load ≤30 mACharacteristicMeasuring accuracy ±0.2%FS or ±0.5%FS Resolution ±1 character Display mode Full Chinese big screen (with backlight) LCD liquid crystal display Display current date and time Display 6-digits (0 999999) instantaneous flow value Display 11- digits (0 99999999999) accumulate flow value Display 6- digits (-199999 999999) temperature compensation value Display 6- digits (-199999 999999) pressure compensation value Display 4- digits (-1999 9999) flow (differential pressure, frequency) value Display 10- digits (0 9999999999) super-compression factor Control mode can select high/lower limit or high-higher/low-lower limit control, with normal open/close output Control setting value free set for control setting value and return difference value in the full range Fixed-quantity control can select flow fixed-quantity to control, LED output indicating Can select flow quantitative process control, LED output indicating Compensation mode temperature pressure automatic compensation Parameter setup panel touch lightly keystroke digital set Setting value of parameter is permanent retention after power failure Cipher lock for setting value of parameter Protection mode Flow accumulation remains more than 5 year after power off Under-voltage of power source can be automatic reset Abnormal work can be automatic reset