|HIGH LEVEL AND OVERFILL
|This is a complete system which can be
delivered either as a single or as a dual point system. When delivered as
a dual point system it is approved as two independent systems as required
in the regulations.
Does not require any specialist engineer for installation or start up.
Proven to be very reliable.
Two years guarantee.
Reference list exceeds 700 tanker vessels.
Type approved by all the main classification societies.
Short delivery times.
The system fulfils IMO, USCG and classification
societies rules and regulations.
|The systems main parts are the SENSORS and the ALARM CABINET.
Type HL-8903 for one level and type HHL-8903 for two levels. This float type sensor works on a permanent magnet - reed switch principle, and the construction is unique with the following advantages:
Will not be damaged when mounted close to a tank washing machine.
Complete unit in stainless steel.
Will not stick due to very small surface area between the float and the guides.
Can handle high pressure, low density and high temperature.
Can operate in any type of cargo which can be pumped.
Has a lifting knob on top of the sensor connection box for testing.
Fail to safe operation with closed contacts in normal position.
Virtually the same alarm point for different cargo densities.
Designed without any active electronic components in order to avoid problems when working in the open deck area.
|The ALARM CABINET with ALARM PANEL.
Type OAS-5 is a complete signal monitoring and alarm unit which can be delivered for single or dual point sensors and is equipped with:
Intrinsically safe connections to sensors.
Potential free contacts for common external alarm light and horn.
All normal alarm functions.
«Alarm hold» function in order to avoid repeated alarms on the same measuring point.
(Option.) RS 485/422 serial line communication with host computer.
Mains supply from one or two AC fused circuits. Two required if dual point system because of the independence requirements.
The Alarm Panel can either be mounted in the front door of the alarm cabinet or in a common console.
The complete system can, according to requirement in the regulations,
be tested by the test knob on the sensors connection box.