Intelligent programmable natural gas flow integrated controller

Analog 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)

Analog 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, RS485
                             Baud rate 300∼9600 bps (free set)
Feed output         DC 24 V, load ≤30 mA

Measuring 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