New E-T-A flow monitor and extended monitoring head provide accurate measurements in large diameter pipes or through thick-walled insulation, for ventilation, cooling and lubrication circuits.

E-T-A Circuit Breakers has extended its range of flow monitoring products by introducing a new flow monitor and extended, push-fit, monitoring head which together provide accurate flow measurements in larger pipe sizes as well as in pipes with thick walled insulation. With a wide range of operating temperatures, they are ideally suited for monitoring cooling and lubrication circuits, as well as ventilation and cooling equipment. Optimal positioning of flow sensors in a pipeline, where the flow is laminar, is essential for reliable and accurate flow monitoring.

It is also important to insert the monitoring head far enough into the flow-stream of the medium.

The new E-T-A FS20 Flow Monitor and 300mm long MKV Monitoring Head are designed to overcome these problems by providing compact single-point flow monitoring in applications with pipe sizes of DN65 or more, as well as in cooling equipment with thick-walled insulation.

The MKV is installed using a compression gland: the tip of the monitoring head needs to be inserted to only one-eighth of the internal diameter of the pipe/duct work, so that extremely large diameters can be accommodated.

To save space, the electronic control unit of the FS20 is accommodated within the stainless steel monitoring head, and with no moving parts they are practically wear and maintenance free.

The operating temperature range is from -40C to +100C.

The FS20 switch point can be adjusted for MIN or MAX flow rates between 0.5m/s and 50m/s for air/gases, and between 0.01m/s and 4.5m/s for water or oil.

Simple, step-less switch point adjustment is by means of a potentiometer.

Electronic signalling is short-circuit proof via a power MOSFET, with electrical connection for the 24V DC supply voltage and signal cable via a 3-pole M12 plug connector to IEC947.

Interruption of the supply voltage lights an LED on the monitor and creates a flow failure signal.