Veeder-Root TLS-450, Настройка и эксплуатация

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TLS-450 Setup and Operation Screens Manual
68
High Product (% of Maximum Volume)
High Product Alarms occur when the Volume of fluid in the Tank exceeds the value you enter in this field.
Note: The High Product Alarm occurs whenever this Volume is exceeded, whether or not a Delivery is in
progress. In U.S. installations this is especially useful in applications such as in Used Oil holding Tanks,
where the rate of fill can be too gradual for the Console to recognize the increase as a Delivery, and
possibly fail to activate the Delivery Overfill Limit Alarm.
Set this limit at a percentage that is between the Delivery Overfill Limit percentage and 95% (of the Tank's
capacity) (See Figure 1).
In international installations this field is especially useful to warn of an impending overfill.
Set this limit to 98% if the Maximum Volume value is greater than 25,000 liters.
Set this limit to 96% if the Maximum Volume is less than 25,000 liters
Delivery Overfill (% of Maximum Volume)
Delivery Overfill Alarms warn of a potential overfill during a Delivery. When the Volume reaches this
value, the TLS-450 Console can activate an Overfill Alarm, and triggers a printout showing the Tank
number, date, time, and product.
Set this percentage no greater than 90% of the Tank's capacity.
In international installations set this percentage to no greater than 99% of maximum (label) Volume (See
Figure 1).
Delivery Limit (% of Full Volume)
Delivery Limit warns when the Volume of Product in the tank drops to a level at which the operator will
call for a delivery - i.e., minimum operating capacity. Set this percentage at a volume higher than that of
the Low Product Volume field (See Figure 1).
Low Product
Low Product Alarms warn when the Volume in the Tank drops to the level you enter in this field (See
Figure 1).
In international installations, assuming no water is present in the Tank, this limit should be set no lower
than:
•
The Tank Volume at 250mm for Mag probe type 8473.
•
The Tank Volume at 125mm for Mag probe type 8493.
These are the minimum Volumes that can be measured by each Probe type.
High Water Warning
The High Water Warning acts as a Pre-Warning to the High Water Alarm. Set this value lower than the
High Water Alarm (See Figure 1).
When Console detects that the Water level in the Tank is higher than the High Water Warning threshold
value a Warning is posted. This behavior, however is affected by Deliveries as described below.