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Differential
Measuring Systems Super High Precision Kaman KD5100
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 Differential
Measuring Systems are ideal where weight, size, and power
consumption are not critical. These Differential Measuring
Systems are a significant advance in precision measurement
technology.
Differential Measuring Systems provide exceptional resolution,
repeatability, and nulling accuracy for detecting the
aligned/ centered position of a conductive target relative
to a pair of noncontacting sensors.
For differential measurement applications, two precisely
matched sensors per channel are positioned on opposite
sides or ends of a target. In this sensor-to-target relationship,as
the target moves away from one sensor, it moves toward
the other an equal amount. Output is differential and
bipolar. The
electronically-matched sensors on opposing legs of the
same bridge provide superior thermal stability.
Cryogenic Applications
Kaman builds an alternate version of the 20N sensor specifically
for cryogenic applications. This sensor has internal expansion
joints and, when screw mounted using a Belleville washer,
effectively eliminates stress or temperature induced mechanical
distortions.
Kaman has confirmed optimum performance in liquid nitrogen
at 70 °Kelvin. Several aerospace applications make
effective use of this sensor in a liquid helium environment
at 4 °K.
Vacuum Applications
Both sensor and KD-5100 Differential Measuring Systems
electronics are used in vacuum applications down to 10
-6 Torr. The vacuum-compatible systems use a NASA-certified
heat-sink compound. These Differential Measuring Systems
have been specified for orbital platforms.
KD-5100 Differential Measuring Systems Super High Precision
The hybrid for the KD-5100 Differential Measuring Systems
are manufactured to MIL-H-38534.MIL-SPEC components are
utilized throughout the electronics module wherever possible.
The KD-5100 Differential Measuring Systems features rugged
construction with a mean time between failures of better
than 55,000 hours in a tactical environment, 238,000 hours
in a space flight environment.
The small package size of the KD-5100 Differential Measuring
Systems (just 2 x 2.12 x 0.75 inches thick) makes this
system ideal for applications where space is a limiting
factor.
Features:
• Two precisely matched sensors per channel give resolution
to a nanometer
• Superior thermal and long-term stability of 5x10-6
inches/month or better
• High sensitivity up to 10 V/mil
• Low power consumption less than 2W @±15 VDC typical
Differential Measuring Systems
Kaman KD5100
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