RLE LD1500 V.3.1 - Manual (Page 11)

rletech.com LD1500 User Guide 11
C
H A P T E R
C HAPTER 0
P
RODUCT
O
VERVIEW
1.1. Description
The LD1500 is a complete monitoring system that detects and reports the presence of water
and other conductive liquids. The LD1500 couples SeaHawk Leak Detection Cable (sensing
cable) with an advanced control panel. Each LD1500 monitors up to 1,500 feet (457.2m) of
sensing cable. When a conductive liquid comes in contact with the sensing cable, an Alarm
LED is illuminated red on the front panel, the distance to the leak is shown on the LD1500’s
web page, and alarm notifications are distributed via user-configurable Modbus (EIA-485
RTU or TCP/IP), BACnet (EIA-485 MS/TP or IP), or SNMP.
1.2. Operation
When the LD1500's analog circuitry measures a current in excess of the user-defined leak
threshold, the unit's microprocessor computes the distance to the leak. The unit then
annunciates the leak and logs the alarm in its event log. The LD1500 provides a webpage
interface to allow users to get updates on the unit's conditions via the Internet or local area
network. The LD1500 also provides Modbus and BACnet outputs via EIA-485, twisted-pair
wire or TCP/IP.
Note The LD1500 produces an alarm in the following conditions:
♦ Leak detected
♦ Cable break (or cable fault)
♦ Cable contamination
♦ Loss of communications
The LD1500 is a supervised system; it continually monitors the cable for continuity. A cable
break or excess contamination of the cable causes an Alarm indication and notification.