BENTLY 1900/27 monitor provides mechanical protection
1900/27 External Termination Blocks
The three types of External Termination Blocks used with a Proximitor/Seismic I/O Module 1900/27 are the Proximitor/Seismic External Termination Blocks, the Bussed Proximitor/Seismic External Termination Blocks, and the Recorder External Termination Blocks. Each type comes with either Terminal Strip or Euro Style connectors.
The boards and components inside of 1900/27 modules cannot be repaired in the field. Maintaining a 3500 rack consists of testing module channels to verify that they are operating correctly. Modules 1900/27 that are not operating correctly should be replaced with a spare. This section shows how to verify the operation of channels in an Proximitor/Seismic Monitor (Section 5.1), how to adjust the scale factor (Section 5.2.1), and zero position (Section 5.2.2).
Verifying a 1900/27 3500 Rack – Proximitor/Seismic Monitor Module
The 1900/27 Monitoring System is a high precision instrument that requires no calibration. The functions of monitor channels, however, must be verified at regular intervals. At each maintenance interval, we recommend that you use the procedures in this section to verify the operation of all active channels in the monitor. It is only necessary to verify the alarms and accuracy of channel proportional values that are active.
Use the following approach to choose a maintenance interval: Start with an interval of one year and then shorten the interval if any of the following conditions apply: – the monitored machine is classified as critical. – the 3500 rack is operating in a harsh environment such as in extreme temperature, high humidity, or in a corrosive atmosphere. At each interval, use the results of the previous verifications and ISO Procedure 10012-1 to adjust the interval.