GUARD LEVEL® AMU

The GUARD LEVEL® Alarm Monitoring Unit (AMU) is an independently powered, main alarm control unit for detection of High Level (HL) and Overfill Level (HHL) 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). All programmed settings are stored in non-volatile Electrically Erasable Programmable Read-Only Memory (EEPROM) memory, with exception being blocking code, so all channels are automatically enabled when the unit is rebooted.

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.

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

INDEPENDENT ALARM MONITORING.

CABLE MONITORING FOR EACH CIRCUIT (OPEN AND SHORT CIRCUIT).

VOLTAGE FREE RELAY FOR EXTERNAL SIGNALS.

SERIAL COMMUNICATION.

SYSTEM TEST BUTTON.

32 DIGITAL OUTPUTS AVAILABLE.

INDIVIDUAL ALARM BLOCKING.

ALARM DELAY FUNCTION.

BUILT-IN POWER FAIL ALARM.

ALARMS ACKNOWLEDGE BUTTON.

The GUARD LEVEL® Master Control Unit (MCU) is the core of a reliable monitoring and alarm system working in harmony with a number of Bergan products. The MCU guarantees ultimate performance and top-rated safety in tanks, vessels and in potentially hazardous work areas.

This “go to” Intrinsically Safe and versatile unit supports up to three completely independent systems; High Level (HL) and Overfill Level (HHL) and tank gauging. It’s also available in three physical sizes depending upon required number of I/O.

The HL and HHL’s well-designed mimic panels are comprised of bright amber and red LEDs for easy visibility, as well as a separate alarm acknowledge switch and differing frequency piezo buzzers with adjustable volume control. The gauging section’s hardened and extended temperature-rated embedded computer with the powerful (Intel) i7 processor runs both Windows 10 operating software and CMS+ application software.

This CMS+ user interface is intuitive with a highly configurable 19-inch LCD touchscreen display that can also be console mounted.

The GUARD LEVEL® MCU can be connected to our Guard Power® UPS redundant power source and, optionally, a WiFi for remote slave display. Plus, the MCU provides multiple communication ports capable of Ethernet broadcast and Modbus communication over serial or Ethernet connections, meeting and exceeding your communication needs.

Options include a touch panel that can be console mounted.

MULTIPLE COMMUNICATION PORTS CAPABLE OF ETHERNET BROADCAST AND MODBUS COMMUNICATION OVER SERIAL OR ETHERNET.

EXTERNAL USB PORT FOR EASY DATA DOWNLOAD.

PRINTER PORT FOR AUTO ALARM PRINT AND DATA LOG PRINT.

19-INCH COLOR TOUCH PANEL FOR DISPLAY, CONTROL, AND MONITORING OF GAUGING SYSTEMS.

HIGH LEVEL (HL) AND OVERFILL LEVEL (HHL) MIMIC PANEL WITH BRIGHT RED AND AMBER LEDS.

THREE FULLY INDEPENDENT SOUNDERS OF DIFFERENT FREQUENCIES WITH ADJUSTABLE VOLUME CONTROL.

THREE FULLY INDEPENDENT SYSTEMS, HIGH LEVEL (HL), OVERFILL LEVEL (HHL), AND GAUGING ALL POWERED FROM THE GUARD POWER® UNINTERRUPTED POWER SUPPLY (UPS-400) REDUNDANT POWER SOURCE.