Mechanical frames are selected according to the material width, the type of measurement to be performed
and the environmental constraints.
"O" shaped frames are used to guide and move sensors, whose heads are located under and above the material to be measured, in a continuous back and forth pattern.
O Frames have two advantages:
- Their transverse space is reduced to the line width and does not overstep too much on the side lines.
- They can be manufactured in very wide widths (ten meters and even more).
But, they also have a drawback: since the sensors consist of two independent parts, typically a transmitting head and a receiving head, both moved synchronously and hence subject to variations of their alignment that may impact the measurement if the sensors design has not been thoroughly thought off.
Scantech offers four model ranges of O-shape Frames:
- 1. The LO1 range consists of lightweight and economic frames for measuring materials up to 4000 mm wide with all types of sensors.
- 2. The MO1range covers intermediate widths from 4500 to 7000 mm.
- 3. The HO1range is extremely robust and designed for very wide materials, for clean room environments or inversely for very harsh environments.
- 4. The range is used for materials with vertical paths.
"C" shaped Frames have a perfect geometry since transmitters and receivers have a fixed relative position. The sensors are mounted in the arms of the “C” - shaped Frame and the complete frame is continuously moved back and forth transversally across the measured material. The disadvantages are that the maximum product width that can be measured is 2.5 / 3 meters, and that sufficient space (one frame length) must be available on one side of the production line for frame travel.
C Frames are commonly used for optical sensors applications in order to optimize the measurement precision and they are also a suitable solution
for applications where there is little space in the machine or vertical directions.
C Frames are essential if the application requires the complete removal of the scanner from the production line.
Scantech offers four "C" Frame model ranges:
- 1. The LCI1 range with sensors embedded in the C Frame arms can be used for applications with air gaps (distance between the arms) up to 700 mm. They can be installed in spaces as narrow as 200mm in the machine direction.
- 2. The MCI1 range with sensors embedded in the C Frame arms can be used for applications with air gaps up to 700 mm too. But the lower arm cross section is larger (250x300mm).
- 3. The HCI1 range with has also sensors embedded in the C Frame arms. HCI1 frames have an extremely strong structure suitable for hot or even very hot environment. The arm cross section is 400mm and the air gap can reach 4000mm.
- 4. The LCO1 range has external sensors fixed on the arms and not located inside the arms. The air gap is limited up to 200mm.
In the majority of the cases, SCANTECH standard models meet customer application requirements. However, sometimes, requirements such as space
constraints or other special installation criteria do not match with our standards.
Please do not hesitate to indicate to us your needs. Scantech applications design office will quickly study and respond to your requirements with a proposed mechanical solution, specifically tailored to meet your application's needs.