AVTECH Flood Sensor (Spot) (RMA-FS2-SEN) - Manual

The Flood Sensor (Spot) is activated by liquid (i.e. water) bridging the adjustable sensor probes (A)
to make a consistent contact. The unit can detect water film from zero height (i.e sensors turned out
to make contact with the floor or surface) to 1/8” height (i.e. sensors turned all the way in). The unit
is factory adjusted to activate with 1/32” water film height which is satisfactory for most applications.
The three adhesive pads provide a gap between the case and the surface to admit water under the unit,
allowing for detection.
CAUTION: If the adhesive pads are removed completely, the Flood Sensor unit may form a seal with the surface. This could
prevent the sensor probes from detecting water until water rises high enough to enter through the top of the Flood Sensor.
If desired, the self-adhesive pad (B) feature may be used to secure the Flood Sensor device to a specific
area by peeling off the thin protective layer from each pad. This helps ensure that the Flood Sensor
remains in place when located on a mounted surface and is important if the surface vibrates or is
sloped, allowing for movement over time or when wet. Most facilities have a specific area that is close
to a water source or known to be a low spot and therefore collects water before other areas. With this
in mind, placement of the Flood Sensor in a specific area where flooding is expected to occur first or
known to occur is always the best choice.
Although the two sensor probes (A) may be adjusted to make contact with the surface, it is
recommended that a small gap be set between the sensors and the surface so undesired activation caused
by dampness, dirt film or placement on an inappropriate surface (i.e. metal) does not occur.
When flooding caused by water or another liquid occurs to create contact between the two adjustable
sensor probes (A) on the underside of the Flood Sensor, a switch is tripped open within the Flood Sensor.
The opening of this switch sends a low voltage signal to the Room Alert ID Box and generates an alarm
condition or status. When the flood condition is eliminated, the switch will reset and the alarm will clear.
Setup And Adjustments
The Flood Sensor comes pre-configured for immediate use. Simply connect the open end of the sensor
cable to an available set of contacts on the Room Alert ID Box and then place the Flood Sensor in the
desired location. The sensor cable can be extended if desired.
Flood Sensor
(Spot)
Instructions For Installing The Flood Sensor
AVTECH Software • Phone 401.628.1600 • Sales 888.220.6700 • Web AVTECH.com
Application Note
Room Alert
RMA-FS2-SEN