AL-3
MONITOR
According to the technical specifications below the unit can be operated in a wide
operating temperature range. Because of the additional internal heating the oper-
ating elements and the housing walls can have high perceptible temperatures
when touched in hot environments.
In case of malfunction of the unit or uncertainties please contact the manufacturer.
Tampering with the unit can seriously affect the safety of people and equipment.
This is not permitted and leads to an exclusion of liability and warranty.
2. Function and features
The Monitor AL-3 is a programmable, analogue threshold relay for the evaluation
of physical values derived from analogue standard signals. The setting possibilities
of the various parameters ensure that the function of the unit is variable within a
great range of values and can thus be adapted to the individual application.
Applications are for example:
• Limit monitoring of flow, pressure, temperature, or level,
• monitoring of the difference between inflow and return flow or
• monitoring of differential pressure.
level sensor [cm]
e.g. coolant
limit value 2
level [cm]
24
temperature sensor [°C]
limit value 1
temperature [°C]
switching outputs
Principle
2CH mode
Limit monitoring of 2
independent, different
process values
here e.g.
temperature [°C]
level [cm]
display, evaluation
or recording
[°C]
analogue output (IN1)