Gasboy SiteOmat Maintenance Manual - Manual (Page 154)

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SiteOmat Setup and Maintenance Manual – MDE 4817G
7-8.5. Tank Alarm Settings
The following settings are relevant in cases where SiteOmat is connected directly to probes (see
section 7-7.2) or where SiteOmat is required to provide alarms in parallel to those generated by an
external TLG.
7-8.5.1. Fuel Leak
The Fuel Leak section enables users to define the alarm settings in cases where a fuel leak from the
tank is detected, that is:
a. Leak rate:
Threshold for alarm activating
b. Dead band
: See description of dead band in paragraph 7-8.3.2
c. Quiet Time
: Determines the minimum quiet time provided (in minutes) to calculate the leak
rate. A quiet time is defined as idle time when no pump activity or fuel delivery occurred.
The system calculates the fuel level difference between the quiet time start and end (In cases
where the idle time is larger than the defined quiet time). The system then normalizes it to
quantity per hour. If the value is higher than the Leak rate value, the alarm is triggered.
d. Warn after:
Determines the lapse of time (in days) for warning that a leak test has not been
performed, as a result of not finding a quiet time.
7-8.5.2. Fuel Volume
The Fuel Volume section enables users to define the alarm settings for the upper and lower levels of
fuel in the tank, that is;
a. Very Low: Determines the level of fuel in the tank to be considered as "Very Low"
b. Very Low: Dead band (see description of dead band in paragraph 7-8.3.2)
Set the Very Low/ Low/ High / Very High level threshold and their corresponding dead band
c. Unex Rise: Determines the Unexpected Rise in the tank level. The check is made at the
check point of the closing shift (Automatic EOD process in Home Base Stations, see
section 6-3)
d. Unex Drop: Determines the Unexpected Drop in the tank level. The check is made at the
check point of the closing shift (Automatic EOD process in Home Base Stations, see
section 6-3)
7-8.5.3. Fuel Density, Fuel Temperature, Water
Level
These three sections - Fuel Density, Fuel Temperature, Water Level – enable users to define the
alarm settings for these fuel characteristics in the tank, that is:
a. Fuel Density – Low: Determines this level threshold (if a density probe is installed)
b. Fuel Temperature - High: Determines the tank's high temperature threshold
c. Water Level – High: Determines the level threshold for water in the tank
d. Water Level –Very High: Determines the extreme level threshold for water in the tank