12
Gas Sensor and Pressure Switch Installation
The Gas Sensor should be installed after the Cell in the following manner:
If the water flow ceases, the gas produced in the cell will collect at the highest point – the Gas Sensor – and when
enough gas ha s been collected chlorine production will cease until flow is restored. It is recommended that 4 x 45°
elbows be used for Gas Sensor Installation, with Gas Sensor mounted
horizontally
. Note that there are two pipe sizes
available for use with the Cell – 50mm/2” and 80mm/3”. Appropriate fittings and pipe will be required.
Note: A sample line after the Cell outlet is recommended to allow testing of the water leaving the Cell. A clear viewing
pipe before or after the Gas Sensor can also be useful for a visual check of the electrolysis within the cell – the water will
appear cloudy or effervescent when the cell is operating.
Use of Pressure Switch
The Gas Sensor has 2 x 6.3mm or ¼” spade terminals (male) on either side of its connecting lead. For manual operation
these should be connected together with the short lead provided. The normally open terminals of the Pressure Switch
must be connected to the Gas Sensor terminals:
Pressure Switch Position
NOTE
: the Flow Sensor has a
50mm/2” BSP threaded end
for fitting into the water line.
The water line will be either
50mm/2” or 80mm/3” and so
appropriate fittings and pipe
will be required by the installer.
Generally there will be a T-
Piece and four 45 Elbows of
the appropriate size needed.
If a 3” to 2” threaded reducing
T-Piece is not available, a 3”
T-Piece can be used with a
slip fit 3” to 2” Threaded
reducing bush.
The flow sensor is always
mounted
horizontally
and in a
raised position to aid the
accumulation of gas from the
Cell.
