3
1. Introduction
1.1 Safety
AirSafe 2 requires a 24
±10
% V DC supply.
24
±10
% V DC is regarded as safe.
AirSafe 2 is an ambient air dust monitoring device.
It is not a safety device.
1.2 Product overview
Thousands of electrodynamic sensors from ENVEA Process have proven their worth for measuring
dust concentrations in processing systems.
AirSafe 2 is a measuring device which can monitor the dust concentration in the ambient air, for
example in buildings, production halls, silos, boiler houses and at work stations.
AirSafe 2 monitors on the basis of defined limit values.
For example to prevent the creation of dust explosion zones or to detect unnoticed dust emissions
from system components.
Dust concentrations which may result in personnel being placed in danger can be detected early and
reliably by AirSafe 2.
1.3 How the device works
AirSafe 2 consists of a flow duct and an integral electrodynamic dust sensor.
Drawing air into the flow duct generates an air flow of approx. 100 m
³
/h (EX: 130 m
³
/h).
Dust particles carried in this air flow which pass the sensor create a charge transfer which in turn
generates a measurement signal.
The measurement signal is converted into an electrical signal which can then be displayed or output.
The fan is fully monitored and an alarm will be displayed in case of fan failure. This garanty the
validity of the measurment.
