10
2.5 Installing Magnets
Figure 2-11 below shows the standard magnet types and dimensions. The circular magnet with an outside
diameter of 1.29 inches and 0.53 inch inside diameter (Part No. 201542) is the most common and is suit-
able for most applications. Larger magnets, with an outside diameter of 2.5 inches are typically only used
with Temposonics transducers that exceed 180 inches in stroke length. Magnets with a 90 degree cut-out
are used in applications that require intermediate supports along the transducer rod.
If upon installation, the null adjustment is inadequate, you can design a coupler with adjustments to
mount the magnet to the measured member.
Figure 2-11
Magnet Dimensions
Part No. 400633
Part No. 201554
1 of 4 holes
each 0.182 in. dia. (4.6 mm)
on 1.625 in. dia. (41.3 mm)
I.D.: 0.75 in. (19.05 mm)
O.D.: 2.49 in. (63.25 mm)
Thickness: 0.375 in. (9.5 mm)
Part No. 201553
1 of 2 holes
0.177 in. dia. (4.5 mm)
120° apart
on 1.625 in. dia. (41.3 mm)
0.44 in. (11.2 mm) opening
90° cut-out
I.D.: 0.625 in. (15.9 mm)
O.D.: 2.46 in. (63.25 mm)
Thickness: 0.375 in. (9.5 mm)
Part No. 201542
4 holes
each 0.15 in. dia. (3.9 mm)
on 0.94 in. dia. (23.9 mm)
I.D.: 0.53 in. (13.5 mm)
O.D.: 1.29 in. (32.8 mm)
Thickness: 0.312 in. (7.9 mm)
Part No. 400533
I.D.: 0.53 in. (13.5 mm)
O.D.: 1.0 in. (25.4 mm)
Thickness: 0.312 in. (7.9 mm)
I.D.: 0.53 in. (13.5 mm)
O.D.: 1.29 in. (32.8 mm)
Thickness: 0.312 in. (7.9 mm)
1 of 2 holes
0.15 in. dia. (3.9 mm)
120° apart
on 0.94 in. dia. (23.9 mm)
90° cut-out
Part No. 251416
Part No. 401032
I.D.: 0.532 in. (13.5 mm)
O.D.: 0.685 in. (17.4 mm)
Thickness: 0.312 in. (7.9 mm)
For use with stroke lengths
£ 60 in.
1.1 in.
Ref.
Part No. 251298-1
0.75 in.
Ref.
0.80 in.
Ref.
0.52 in.
Ref.
0.30 in. max.
Aluminum Plate
(bonded to magnet)
Magnet Spacer
ID: 14.3 mm (0.563 in.)
OD: 31.75 mm (1.25 in.)
Thickness: 3.175 mm (0.125
4 Holes
each 3.9 mm dia. (0.15 in.)
90° apart on 23.9 mm dia.
(0.94 in.)
S
N
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