| Hexamite |
HE860 Hexamite Positioning Device |
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| Connecting Sensors to the HE860 | |
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CAUTION when using SEALED SENSORS |
 If
the HE240STR or the HE240STX is being used to transmit the
sonic wave, the voltage V supplied to the sensor must not go higher than
42V peak to peak for sustained periods. The illustration on the right
shows a voltage divider used to protect the sensor. The voltage V becomes
V = V(he860) x R2 / (R2+R1) The values for R1 and R2 should be selected so that the voltage V stays beneath 42V peak to peak. |
| The
HE860 Block Diagram
The illustration on the right shows the internal block structure of the HE860 units. The signal from the sensor is conditioned using an amplifier and a second order band pass filter. The output driver is a push pull type utilizing passive boost. Data is coupled via RS485 conditioner to the network. |
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| Important: The HE860 is extremely sensitive, while connected to a computer ungrounded switcher power supplies from laptops and desktop can disturb the HE860. In case of trouble make sure any device connected to the HE860 is well grounded. Laptops running on batteries do not disturb the unit while connected. | |
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HE860 Enclosures PVC, IP68 compliant. Shape cylindrical Size 0.8" dia, 6" long |
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Copyright © 1999 [Hexamite]. All
rights reserved. |
