Installation Manual

ValveWatch II Hardware Installation and Setup Manual
Page 25 of 34
CRANE
Nuclear
8 Strain Sensor Installation
One of the key parameters of ValveWatch is to monitor the actuator to valve forces. This
parameter can serve as a trigger for the data acquisition circuits and more importantly to trend
relative torque or thrust values during valve strokes. The sensor is designed to measure either
thrust or torque depending on the orientation during installation. The strain sensor is typically
installed on a load carrying, non-moving portion of the valve such as the actuator mounting yoke.
It is attached using a high performance epoxy adhesive provided in the kit. The steps below
outline the sensor installation.
8.1 Initial Equipment Check List
Before going out to install the sensor, an inventory of the items needed to perform the job is
always a good way to start. Below is a list of the minimum items needed to perform the task of
sensor installation.
Strain Sensor with integral wiring of 50 feet
Two part epoxy pack
Epoxy applicator
File (rough)
Sand paper (rough)
Vibrating Etching tool (optional)
Variable Speed Grinder (60-80 grit silicon carbide or aluminum oxide wheel) (optional)
Eye protection
Gloves
Cable Ties (Tie Wrap)
Field cable label tags
Caution:
Follow all installation procedure steps and wiring diagram J-51008ExS when connecting the strain
gage to its associated apparatus.