Installation

Preparing for installation

Installation information

Two mounting options are provided:

• Mounting in a hole with internal thread (mounting hole).

• Mounting in a through-hole (without internal thread) using a mounting nut (see Accessories).

Installation guidelines

Installation in non-magnetizable material

We recommend using non-magnetizable material to mount the BTL and magnet.

No.	Description
1	Non-magnetizable material
2	Magnet

Installation in magnetizable material

If using magnetizable material, the BTL must be protected against magnetic interference through suitable measures (e.g. spacer ring made of non-magnetizable material, a suitable distance from strong external magnetic fields).

No.	Description
1	Magnet
2	Spacer ring made of non-magnetizable material

Installation instructions

Hydraulic cylinder

If installed in a hydraulic cylinder, the magnet should not make contact with the rod. Minimum bore diameter in the support piston:

Rod diameter	Bore diameter D2
10,2 mm	At least 13 mm

Mounting hole

Depending on the version, the BTL comes with an M18×1.5 thread (according to ISO) or a 3/4“-16UNF thread (according to SAE) to secure it. Accordingly, the mounting must be made before assembly.

Horizontal mounting

For horizontal mounting with measuring lengths > 500 mm, support the rod and, if necessary, screw it on at the end (with threaded rod end).

Magnet

Various magnets are available for the BTL (see Accessories).

Installation recommendation for hydraulic cylinders

If installing horizontally in a hydraulic cylinder (measuring lengths > 500 mm), we recommend affixing a slide element to protect the rod end from wear.

Note

Dimensioning of the detailed solutions is the responsibility of the cylinder manufacturer.

The slide element material must be suitable for the appropriate load case, medium used, and application temperatures. E.g. Torlon, Teflon or bronze are all possible materials.

The slide element can be screwed on or bonded.

• Secure the screws so they cannot be loosened or lost.

• Select a suitable adhesive.

There must be a gap between the slide element and piston bore that is sufficiently large for the hydraulic oil to flow through.

Options for fixing the magnet:

• Screws

• Threaded ring

• Press fitting

• Notches (center punching)

Note

If installed in a hydraulic cylinder, the magnet should not make contact with the rod.

The hole in the spacer ring must ensure optimum guidance of the rod by the slide element.

Installation

Mounting in a hole with internal thread (mounting hole)

To mount the BTL in a hole with internal thread, proceed as follows:

1. Make a mounting hole with thread (possibly with countersink for the O-ring) acc. to Mounting hole figure 1 or Mounting hole figure 2.

2. Screw the BTL with mounting thread into the mounting hole (max. torque 75 Nm).

Mounting in a through-hole

To mount the BTL in a through-hole, proceed as follows:

1. Guide the BTL through the hole.

2. Screw the mounting nut (max. torque 75 Nm, see Accessories) onto the mounting thread on the rod side.

Further steps

Electrical Connection

The electrical connection is made via a plug connection (for pin assignment see S92 connector) .

Shielding and cable routing

Shielding

Observe the following instructions to ensure electromagnetic compatibility (EMC):

• A shielded cable between BTL and controller can be used to increase EMC in the application. Shielding: Braided copper shield with minimum 85% coverage.

Magnetic fields

The position measuring system is a magnetostrictive system. Ensure that there is sufficient distance between the BTL and the transducer/holding cylinder and strong, external magnetic fields.

Cable routing

All cables between BTL, control and power supply must be routed tension-free. To prevent electromagnetic interference, ensure sufficient distance from high-current cables and cables carrying high-frequency voltage signals (e.g. from frequency converters).

Cable length

The maximum cable length is 30 m.[3]