Instrument question: Precautions for installing and removing probes on large-scale units
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Precautions for assembling and disassembling probes on large units
Be careful to protect the probe so that the coil on the front is not damaged.
Be sure not to damage the probe head or ruin it during installation.
This post was last edited by zhaohh3211 on 2012-5-8 20:46. If, when removing or installing the probe of the unit, the wires are disconnected from the preamplifier first, then care should be taken when handling the probe. Once the probe is installed, it’s advisable to degrease the connection between the probe wire and the preamplifier.
Before installation, it is necessary to create a characteristic curve for the effective distance, and the installation location is determined based on this curve.
Wrap it on the street to prevent it from getting dirty. Prevents wire breakage and deformation.
The key is sealing; otherwise, oil leakage during operation is quite difficult to deal with
First, after removing the probe, appropriate markings should be made to ensure that the probe and the preamplifier are not mixed up, as getting them wrong can have an impact on their linearity； Secondly, the removed probe must be properly protected to prevent damage ； Third, after removing the probe, it is recommended to block the holes in the unit with something (we usually use oil-absorbing paper) ； Fourth, after removing the probe, its linearity must be verified; it is best to verify it together with its preamplifier ； Finally, when reinstalling, be sure to pay attention to the gap voltage of the displacement probe (if it is installed with the working surface as the zero point, ask them to move the shaft so that it is at the working surface before installing) ； If the center position is taken as the zero point, it is necessary to measure the gaps between the main thrust and auxiliary thrust components, and then convert those values into voltage levels for installation).
1. Protect the probe well; remember its original installation position. 2. For shaft displacement installation, first determine the zero voltage, and then calculate the installation voltage based on the displacement amount. 3. Seal the wires as they exit the machine housing
Before disassembling the probe again, make on-site markings and record the installation voltage and gap voltage!