GUARD LEVEL® ALARM MONITORING UNIT (AMU)

Available from Bergan Marine Systems

Product Details

GUARD LEVEL® ALARM MONITORING UNIT (AMU) (Click to enlarge image) The GUARD LEVEL® Alarm Monitoring Unit (AMU) is an independently powered, main alarm control unit for detection of HL and overfill alarm sensors providing superior control with smart features including voltage- free relay for external signals, cable monitoring for each circuit, individual alarm blocking and a built-in power fail alarm.

This versatile, compact device has 32 digital outputs and can monitor any 4-20mA/HART loop sensor (open and short circuit). The AMU comes with its own internal power supply for power fail annunciation with a LED and electronic sounder. Just scroll through the channels on the keypad to conveniently adjust alarm delays, enable or disable the alarm blocking function.

All programmed settings are stored in non-volatile EEPROM memory, with exception being blocking code, so all channels are automatically enabled when the unit is rebooted.

Since the AMU utilizes high precision A/D conversion for all channel measurements, cable shorts and a cable break on individual channels are detected and alarmed. Individual LED indication and custom nameplate is provided for each channel.

All measured data as well as remote acknowledgment is handled from the MCU and associated CMS+ software with the built-in RS422 communication port. With the digital output option, the AMU can be supplied without a front panel. In this case, all alarm indications are on the discreet LEDs on the MCU – or in a customer provided console.

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