Thread Content
I currently have a 5mm probe with a sensitivity of 7200, along with a preamplifier; the extension cable used is 330130-040-00-05; I want to use it for displacement measurement in the machine unit. Could you help me figure out how to adjust the output voltage value and the settings in 3500? Settings in 3500: Choose 7200, 5mm? ;But I can’t find any information on 7200 online. I’m not sure what value to use for this zero-voltage setting I’m not sure either if the other options are correct If anyone understands, please share your insights!
I haven’t used Bentley’s system; I checked the mechanic’s manual, but there isn’t a specific zero-voltage value listed there. However, for Pully’s shaft displacement sensor, the zero voltage appears to be 10±0.25V, while the zero voltage for the radial vibration sensor is 8±0.50V.
Where is your installation location? I remember that for the sides of the shafts we installed in the past, the zero point had to be calculated based on the thrust clearance provided by the fitter; the primary value was -10 + thrust clearance/2*7.874, while the secondary value was -10 - thrust clearance/2*7.874.
I’ve never used a 7200; I’ve only used probes of type 33. You can check the installation manual for the Bently software for more information. The zero-voltage value seems to be calculated when the fitter helps with alignment.
The 7200 series preamplifiers and probes are very old systems; even the 3500 doesn’t have this option – so why do you insist on using it? If the 3300 series is to be used, then components from the 3300 series should be used as well. Why are such old detection elements still used for equipment that is so important? If it is necessary to use the complete circuit set for verification, it cannot be used if it exceeds the specified limits. A static operating voltage of 7~8V for vibration is not a problem.
I don’t have any new ones available at the moment! I checked the information; 3500 is compatible with the 7200 series
Displacement and vibration preamplifiers are not the same.