Tecfluid AD Series, Instruction Manual

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The "0" on the scale indicates the fluid inlet on the meter, and the end of the scale indicates
the fluid outlet.
1A / 2A LIMIT SWITCH
5 INTRODUCTION
It is a SPDT reed type switch that is used to generate an alarm or an operation when the
circulating flow reaches a certain value.
It consists of a bistable reed sensor (SPDT), in other words, when the flow exceeds the set
point the sensor changes its state and maintains it until the flow decreases below that value.
In the same instrument, there may be one or two sensors, depending on the points to be
detected.
5.1 Set point adjustment
The switch housing has a mark on the side next to the graduated scale. The position of this
mark indicates the value at which the switch will be activated.
To adjust the position, loosen the fixing screw and slide the switch through the slot until the
set point coincides with the desired flow rate on the scale.
Fixing
screw
Switching
mark