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TRANSMITTER POWER
SUPPLIES
The
shaft/component mounted transmitter needs a source of electrical power. In
non-demanding (short duration) applications a shaft mounted battery unit is
suitable, but for long term installation in demanding, inaccessible
environments, inductive coupling is essential. |
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BATTERY
POWER SUPPLY
For short duration
measurement projects in undemanding environments, battery power for the
transmitter provides a simple and low-cost solution. A benefit of battery power
is that the maximum transmission range - the distance between the shaft and the
stationary pickup - is greater than with inductively powered systems, typically
150-200mm. |
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BU31 - Standard battery unit
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65 x 30 x 20mm 46
grams
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Matches TX31D transmitter
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Attaches to shaft using CAK kit
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On/off switch may be removed -
then no electromechanical contacts
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Sealed housing for 2 x 1/2 AA
lithium cells. 7v @ 850mAH - typically 70+ hours life
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- Compact pickup IH1 may be used with battery powered
transmitters
- Shown with universal mounting clamp.
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INDUCTIVE
COUPLING
POWER SUPPLY
Robust and impervious to
operating conditions, inductive coupling is the standard method of powering the
transmitter. Electrical energy is transferred from a stationary inductive head
or loop to a second, shaft mounted loop or pickup (IP2). Simultaneously, measurement
data is transmitted back across the same components. Configurations to suit
differing applications are easily produced using the standard interchangeable
heads IH2, IH2/L or loop interface module IL2. |
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Inductive Head IH2 - replaces transmitter batteries
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Long pole piece version IH2/L for shaft diameters
>200mm
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Incorporates signal pickup
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Adjustable mounting bracket simplifies alignment
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H 40mm x W 35mm x D 40mm including mounting bush
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May also be used in end of shaft location
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Inductive Loop Interface
Module IL2 - replaces transmitter batteries
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Supplied with pre-formed
glass-fibre loops 40 - 200mm diameter
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Airgap up to 90mm
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Incorporates signal
pickup
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Non critical alignment
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May also be used in end
of shaft location
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Compact 33 x 28 x
8mm Pickup - IP2, replaces on-shaft loop
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Use with stationary loop
and interface module IL2
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Incorporates signal
transmission
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Attaches to shaft with
CAK kit giving fast strap-on installation
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Stationary loop may be
shaped to accommodate large shaft displacements
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