AMETEK 952 BlueOx LDT - Manual (Page 4)

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Before installing the LDT, the following should be
considered:
• If a mounting bracket is used that is made of
ferromagnetic material (a material readily
magnetized), it should be placed no closer than
0.25" from the LDT's rod end.
• To minimize the effects of magnetic flux distortion
(which could cause an inaccurate measurement
of the magnet’s position), ferromagnetic material
should not be placed closer than 0.25” from the
magnet.
2.1: Installing the LDT to a
Mounting Bracket
Perform the following steps to install the LDT to a
mounting bracket. Parts discussed in this section
are found in Figure 1-1. If the LDT is being installed
into a hydraulic cylinder, refer to Section 2.2:
Installing the LDT in a Hydraulic Cylinder.
1. Unscrew the LDT’s jam nut from the threads
protruding from the hex mounting base.
2. Insert the LDT’s rod end into the mounting
bracket’s hole. The mounting bracket may
contain a 3/4 − 16 UNF − 2B threaded hole. In
this case, screw the LDT into this hole using the
threads protruding from the hex mounting base.
3. Once the LDT is in place, screw the jam nut
back onto the threads of the hex mounting base.
Use the 1.75" hex mounting base on the head
assembly to tighten the LDT to the bracket.
WARNING: Do not use the blue aluminum cover
of the head assembly or connector/cable nut
(either a 1 1/16" Amphenol connector or 1 3/16"
cable nut) to tighten the LDT within the bracket
(see Figure 2-1). This may damage the LDT
and will void your warranty. To tighten the LDT
within the bracket, use the 1.75" hex mounting
base on the head assembly.
Chapter 2: Installing the LDT
If the length of the LDT’s rod end is less than 30”,
skip to the sub-section: Mounting the Magnet
Assembly.
Installing Support Brackets
It is recommended that a support bracket be used
with LDTs having a rod 30”-71” in length. Supporting
the end of the rod will minimize operational errors
and protect against damage due to shock and
vibration. If the length of the LDT’s rod is 72” or
longer, it is recommended that additional support
brackets be used. These additional support brackets
must be made of a non-ferrous material. Because
these additional support brackets will interfere with
the magnet’s movement, a special split-type magnet
assembly must be used. To order a split magnet
(part number SD0411200) and support brackets
(part number SD0411100), contact Factory.
To install a support bracket for a LDT having a
rod 30”-71” in length, perform step 4a. If the rod is
longer than 71”, perform step 4b.
4a. If the support bracket is made of a
ferromagnetic material (material readily
magnetized), install the support bracket no
closer than 0.25” from where the LDT’s dead
band ends and the area of stroke begins.
Continue to the sub-section: Mounting the
Magnet Assembly.
To install two or more support brackets for a LDT
having a rod 72" or longer in length, perform the
following steps:
4b. Install support brackets at increments of 48”
throughout the LDT’s rod. Support brackets
placed within the null zone and area of stroke
or closer than 0.25” to the beginning of these
areas must be made of a non-ferrous material.