TYPE OAS-5

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.

Some features

. 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 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 sensor's connection box.

The SENSOR.

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.