FL 128 Multizone System 15.01.2021 40
Returning Sensor to Use
Flexi-pad sensors can be wetted and dried any number of times provided the sensor element/ fabric
cover is not contaminated with a substance that irrevocably changes its electrical characteristics. An
example may be vending machine syrup, chemical floor treatments paint etc. After activation, the fabric
cover can be replaced with a spare or removed for drying. This would allow the sensor to be returned to
use quickly. The sensor can be allowed to dry naturally but this can take some time depending on the
environmental conditions and the amount of wetting that occurred.
Pipe-in-Pipe Sensor
Introduction
The Floodline Pipe-in Pipe, or double containment, sensor has been specifically designed for use with
double skinned pipes, tanks or other vessels.
The pipe-in-pipe sensors are encapsulated in a high-density plastic body and are fitted with a 5m 4-core
leader cable. Dimensions: - 70mm long x 30mm diameter threaded at the base to fit a ½” BSP. Two
stainless detection probes protruded from the threaded base and water contacting these probes
activates an alarm. The device can also be used as a warning “tell -tale” in an overflow pipe.
Fixing
The pipe-in-pipe sensor should be mounted in a pre-drilled and threaded hole in the outer pipe or tank,
design to accept the ½” BSP thread or other suitable flange or boss.
Connecting to the Floodline Panel
The pipe-in-pipe sensor is connected to the zone input terminals of the Floodline control panel via the
encapsulated 4-core leader cable. The leader cable to the pipe-in-pipe sensor can be extended using any
2-core PVC/PVC 7/0.2mm alarms/comms type cable. LSF or other light cables can be substituted if
required. A zone can consist of a single sensor, but it is possible to connect more than one device to a
single zone.
A diagram of the connection details for the pipe-in-pipe sensor is presented in Appendix G.
Returning Sensor To Use
The pipe-in-pipe sensors can be wetted and dried any number of times and requires no attention after
activation.
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