330400 and 330425 Accelerometer Operation Manual
2. Installation
2.1 Receiving Inspection
Inspect the components of the order when they are received to see if there was
any damage during shipping. Keep all shipping forms and invoices. If any
shipping damage is apparent, file a claim with the carrier and submit a copy to
Bently Nevada. Include all model numbers and serial numbers with the claim.
We will either repair or replace damaged parts according to the terms and
conditions of the sale.
The Accelerometers are shipped in a protected box and the connector is
protected with a plastic cap. The Accelerometers are sensitive instruments and
these precautions help to prevent damage during shipping.
2.2 Installing the Accelerometer
2.2.1 Positioning
For optimum performance and accurate measurements, place the accelerometer
at a position on the machine casing that is most responsive to vibration. Proper
placement often depends on the application. Bently Nevada offers Machinery
Diagnostic Services that can help you find the optimum location for your
application.
2.2.2 Mounting
Follow these steps to install the Accelerometer:
Step 1:
Check that the ambient and surface temperatures of the installation
location are within the temperature rating of the Accelerometer: -55° to 121°C ( -
67° to 250°F).
Step 2:
Check that the mounting site is flat, clean and dry. The accelerometer
requires a flat area that is 28.6 mm dia. (1.125 in. dia.) for mounting. For best
results the mounting surface should have a roughness of no more than 0.813 pm
(32 pin) rms and a flatness of at least 25.4 pm (0.001 in) TIR.
Step 3:
Drill and tap a hole in the mounting center of the prepared surface as
required by the integral mounting stud. The 330400 and 330425 Accelerometers
have two mounting stud options: 1/4-28 UNF-2B X 0.35 in and M8X1-6g X 8.89
mm thread. The hole should be perpendicular to the mounting surface within ± 6
minutes.
Step 4:
This step only required for accelerometers with a serial number not
preceded by the letter "G". Lightly grease the lower face of the mounting adapter
4
Summary of Contents for Bently Nevada 330400
Page 34: ... ...
