Overview
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Figure 1: Filling a tank from the tank truck
Security system
The Overfill Prevention Sensor can be used to install a security system which, as required by
prEN 16657, consists of the digital
product identification device (PID)
and the
product recognition
device (PRD)
. The magnetic
Cross Over Prevention (COP)
and the analogue
Filling Hose Safety
(FHS)
are also used as an alternative. PID and PRD systems are third party products.
The magnetic
Cross Over Prevention (COP)
is used to prevent product mixes. In order to
achieve this, the Overfill Prevention Sensors are equipped with a coded connection fitting. The
particular code allocated to each product is read out by the Overfill Prevention Controller in
the tank truck. The liquid can only be released if the dispensing product coincides with the
product in the tank.
The analogue
Filling Hose Safety (FHS)
is used to monitor the hose. The connections of the fill-
ing hose and the vapour recovery are monitored via the connection cable of the Overfill Pre-
vention Controller. The liquid can only be released when the hoses are securely connected.
Types
The following types of Overfill Prevention Sensors are available:
•
83 UV (for fuel oil, diesel, petrol, brass probe tube, pipe or wall fitting)
•
83 UV-A (as 83 UV, stainless steel probe tube)
•
83 UV-C (as 83 UV-A, without junction box, with 5 m long cable)
•
81 D-Ex (as 83 UV-A, also for aviation fuels, solvents, etc. See list of substances)
•
81 D-Ex U (as 81 D-Ex, with voltage surge protection)
Connection fitting
Socket coupler
Connection cable
