VDH 907.000401, Руководство по установке

Страница: 59 / 68

Page 59
PROBA 5
Doc.nr: 190356 Version: 1.0
6.6.6 Gassing settings
No. Explanation
1501 Differential of the gassing (only when a gas sensor is used).
1502 Offset gas concentration (offset from switch off concentration compared with the set point).
1503 To prevent the door from being opened while there is gas in the cell, the door is locked when the gas sensor measures a
concentration that is higher than this parameter. The cell must first be ventilated before the door can be unlocked again.
1504 Ventilation may terminate gas period
Here it can be indicated whether a manual ventilation can stop the fumigation period. If this value is set to no, manual
ventilation cannot be started during a fumigation period.
1505 The gas sensor can be used to read out the gas concentration while the gassing takes place on time.
1510 Gassing with a pulse – pause control? This means that the gas valve is open during P1511 time and closed during P 1512
time. This continues during the gassing period.
1511 Pulse time of the gassing (if P1510 is 1)
1512 Pause time of the gassing (if P1510 is 1)
1520 The maximum time the gas valve may be opened during the gassing period if a gas sensor is used. If this time has
elapsed and the concentration has not reached the set point, an alarm will be generated.
1521 Gas minimal/maximal pulse time active during gassing on concentration. This parameter is valid in combination with
P1522, 1523 en 1524.
1525 If an alarm is generated due to the time of P1520 being exceeded, it can be decided whether or not to close the gas valve.
This choice can be made using this parameter.
1526 To ensure that measurement errors of the gas sensors do not lead to incorrect interpretations, this parameter can be
used for the settings when the reading should be 0. If the measured concentration is lower than this value, the 0 reading
will remain despite this possibly fluctuating within this margin.
1527 To prevent the reading of the gas concentration being set to 0 too quickly, a time delay can be set. The concentration will
have to be below the value of P1526 for at least this time before the value is set to 0.
6.6.7 Ventilation settings
No. Explanation
1601 Should a ventilation take place if the gas concentration exceed a higher level than the value of P1603? If yes, this will only
take place after the gassing period.
1602 Should a ventilation take place if the gas concentration exceed a higher level than the value of P1603 during the gassing
period?
1603 The maximum ethylene level where above a forced ventilation will start
(if P1601 or P1602 is 1).
1604 The differential for P1603.
1610 Should a ventilation take place if the CO2 level exceed a higher level than the value of P1612? If yes, this will only take
place after the gassing period.
1611 Should a ventilation take place if the CO2 level exceed a higher level than the value of P1612 during the gassing period?
1612 The maximum CO2 level where above a forced ventilation will start
(if P1610 or P1611 is 1).
1613 The differential for P1612.