Kaman KD-2300 Bedienungsanleitung PDF herunterladen (Seite 24)

KD-2300 Instruction Manual Part III: The Equipment •

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Target Material

The essential requirement for a proper target is that it be conductive. In

addition, nonmagnetic targets offer greater stability and linearity than

magnetic targets (in particular, aluminum, copper and some 300 series

stainless steel make ideal targets).

Kaman Precision Products can optimize any Series 2300 system to work with

either a magnetic or nonmagnetic target. You will find it difficult to use a

system tuned for nonmagnetic materials with a magnetic target. With

some of the smaller sensors, it is impossible to use a mismatched target and

system without optimization through changing the bridge module.

Target Size

The size of your target relative to the sensor is very important. The target

should be a minimum of 2.5 to 3 times larger than the diameter of an

unshielded sensor and 1.5 to 2 times the diameter of a shielded sensor.

TARGET =

2.5 to 3X diameter of

an unshielded sensor

UNSHIELDED SENSOR

SHIELDED SENSOR

TARGET =

1.5 to 2X diameter of

an shielded sensor

Targets larger than the recommended size will have no effect on system

performance. A flat target that is 3 times the diameter of a sensor face will

look the same as one that is 300 times the diameter.

Using a target smaller than the recommended size will cause some

degradation in linearity and long term stability. For smaller targets,

calibration over a range less than the specified range for the sensor will

minimize and in some cases, eliminate the performance degradation. (Refer

also to Part 4: CALIBRATION for high accuracy band calibration.)

Measurements taken using targets smaller than the recommended size are

dependent on both the vertical and horizontal position of the target. A

vertical view shows a rod passing left to right (three different positions)

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Kaman KD-2300 Bedienungsanleitung Seite 24