Patol 700-451(Z) LDM-519-DDL Digital LHDC Monitor and Distance Locator 2km

Please note: This product is no longer available. Please contact us for further information.

Patol 700-451(Z) LDM-519-DDL Digital LHDC Monitor and Distance Locator 2km (SIL 2 Certified)

The module is designed to monitor a length of Digital Linear Heat Detection Cable (LHDC) for both fire condition and fault status (open circuit).

The unit is designed such that it may be configured to operate in a two-wire mode that emulates the operation of conventional heat detectors. The unit may therefore be directly interfaced with fire control panels by connection to fire zone trigger circuits or addressable interfaces.

The DDL has a 3½ digit LCD which activates on fire condition and displays the distance into the zone the alarm has occurred. Digital LHDC may be employed in lengths up to 2km (1999m). The unit has an adjustment to accommodate interposing cables.

Signalling of fire and fault status by means of VFC may be realised when a separate supply is employed. A 4mA to 20mA instrumentation current loop output is provided for connection to PLC’s etc.

Key Features:

• SIL 2 Certified
• Display of Alarm Location: Distance in metres
• Fault monitoring of LHDC for open circuit conditions
• LED indication of Fire, Fault and Supply status.
• Test & Reset functions
• Operable from two wire fire panel conventional circuits. Line / Low Power
• Analogue address loop interfacable - Loop Powered configurable
• 4 to 20 mA instrumentation current loop output
• LHDC Hazardous Area use by means of intrinsically Safe Zener Barriers.
• VFC outputs for Fire & Fault conditions - Selectable
• Din Rail mounting

Please note: The 700-451 (Z) is suitable only for use with a Zenner Barrier 700-702 which is to be ordered separately.