Accessories; Window Air Purge Assembly; Product Loss Sensors; Network Interfaces - Process Sensors MCT Series Installation And Operation Manual

9.0 Accessories

9.1 Window Air Purge Assembly

This assembly installs around the optical window to protect it from air borne contaminants. Air is
connected via the ¼ inch (6mm) pipefitting and a sintered insert disperses the air around the optical
window.
Clean, dry, oil free air at 2-3 psig < 5 scfm should be connected. Only a nominal supply is required, high
airflow in the tube tends to create a vortex and actually sucks dust into the tube.

9.2 Product Loss Sensors

These are photoelectric proximity sensors that mount to the sensor. They "sense" the presence of the
product under the sensor. When the product disappears they provide an input contact to the HOLD input
in the sensor, to freeze the sensor's readings and analog outputs until the product returns.

9.3 Network Interfaces

The sensor may be fitted with a variety of interface modules that provide the sensor's output data in the
correct format for the network into which it is operating. Refer to the instructions provided with each
option module for installation and output formats.

9.4 Cooling Panels

The MCT series sensors may be fitted with a cooling panel to allow the sensor to be installed in
environments where the temperature is greater than 50 C (120 F).
The cooling panel is mounted on the bottom face of the sensor and may be used with either water or air-
cooling media.
When used with air-cooling a Vortec Cooling Element will be provided. This element provides a stream
of cold air to the panel.
The requirements for either cooling media are as follows:

9.4.1 Air Cooling

Connect the Vortec cooling element to the inlet port on the cooling panel.
Connect a ¼" (6mm) inlet tube to the inlet of the cooler element.
Supply clean, dry air at 80 – 100psi (6-7 bars) to the cooler.

9.4.2 Water Cooling

Connect a ¼: (6mm) tube to the inlet and outlet connectors on the cooling panel.
Supply cold water (65-80F/20-27C) at an approximate flow rate of 1cfm (0.3 liters/min).
31