Accelerometer Interface Module Operation Manual
6
3. INSTALLATION
3.1 Receiving, Inspecting, and Handling
Carefully remove the interface module, extension cable and accelerometer (if
applicable) from their shipping containers and inspect them for shipping damage.
If you remove the lid, be careful not to lose the two mounting screws located in
the base of the interface module enclosure. If shipping damage is apparent, file a
claim with the carrier, and submit a copy to Bently Nevada Corporation. Include
part numbers and serial numbers on all correspondence. If no damage is
apparent and the equipment is not going to be used immediately, return the
equipment to the shipping containers, and reseal until ready for use. Store the
equipment in an environment free from potentially damaging conditions such as
high temperature, excessive humidity, or a corrosive atmosphere. See Section 6
for environmental specifications.
3.2 Installation
Installation consists of mounting the interface module in a housing and
connecting the field wiring and the extension cable to the accelerometer. In most
cases the accelerometer will already be mounted on the engine.
Interface Module
Mount the interface module in an enclosure that protects it from mechanical
damage, contamination, the weather, and which isolates the interface module.
Bently Nevada part number 80808-01 and -02 are stainless steel weatherproof
housings with a built-in insulated mounting plate. Housing drawings are in the
appendix. For installations in hazardous areas requiring agency approvals, the
housing must be approved by the local inspection authority. For notes on
installation in hazardous environments rated Class 1, Division 1 by CSA, or Zone 1,
IIB by CENELEC (European standards) see drawings 141243 or 141110 in the
appendix.
Figure 2.1 illustrates the basic mounting configuration; it is imperative that the
enclosure and interface module be installed in a HORIZONTAL postion, as shown.
Mount the interface module by using the two mounting bolts located at diagonal
corners of the interface module. The bolts can be accessed with the lid in place by
removing the two plastic caps on the lid as shown in Figure 2.1. Make sure the lid
is tightly closed. Locate the interface module outside the turbine enclosure or at
the coolest location in the turbine enclosure. The recommended mounting
location for the interface module is on a structure where vibration components
between 20 Hz and 400 Hz do not exceed 0.1 g-pk in any of three orthogonal
directions.
