Register of abnormal situations
The register of abnormal situation displayed on the corrector’s screen has seven positions, each of which shows information about the unconverted
flowrate, the operation of pressure measuring channels, gas temperature, flowrate, pressure drop, ambient temperature and the state of the electronics.
Er х х х х х х х
Q р tg g e dр tс
Q (information about unconverted flowrate) |
0 – there are no abnormal situations; 1 – the measured value of unconverted flowrate is less than the lower limit of the unconverted range of the meter; 2 – the measured value of unconverted flowrate is greater than the upper limit of the unconverted range of the meter; 3 – the value of unconverted flowrate is equal to 0 (the number of incoming pulses from the gas meter to the corrector is less than one for 1 hour) |
р (information about operation of the pressure measuring channel) |
0 – there are no abnormal situations; 1 – failure of the pressure measuring channel; 2 – the measured pressure is less than the lower limit of unconverted range; 3 – the measured pressure value is greater than the upper limit of unconverted range |
tg (information about operation of the gas temperature measuring channel) |
0 – there are no abnormal situations; 1 – failure of the gas temperature measuring channel;
2 – the measured temperature is less than the lower limit of unconverted range;; 3 – the measured temperature is greater than the upper limit of unconverted range |
g (information about operation of the flowrate measuring channel) |
0 – there are no abnormal situations; 1 – activation of the "watchdog" reed switch |
e (information about operation of electronics) |
0 – there are no abnormal situations; 1, 2, 3 – violations in operation of electronics |
dр (information about operation of the differential pressure measuring channel) |
0 – there are no abnormal situations; 1 – failure of the differential pressure measuring channel (or lack of differential pressure transducer); 2 – the measured value of the pressure drop is less than the lower limit of unconverted range; 3 – the measured value of the pressure drop is greater than the upper limit of unconverted range |
tс (information about operation of the ambient temperature measuring channel) |
0 – there are no abnormal situations; 1 – failure of the channel of measuring of ambient temperature (or lack of a temperature converter); 2 – the measured temperature is less than the lower limit of unconverted range; 3 – the measured temperature is greater than the upper limit of the unconverted range |