A5S Overview0 pages

A5S

Differential-Hall-Effect based Sensors
Series A5S Overview

KEY FEATURES
t Speed range from 0 Hz up to 25 kHz
t (response time < 20 microseconds)
t Air gap to the target / pole wheel up to
t 2.5 mm (depending on the profile size)
t Temperature range –40…+125 °C
t (–40…+255 °F)
t Differential principle diminishes the
t influence of external magnetic stray t
t fields and of machine vibration
t Sealed stainless steel enclosure
t > 200 bar pressure to sensor tip
t Available for connection via tight plug,
t or with firmly attached cable (PVC
t or Teflon® insulated)
t Powerful square wave output signal
t equally high over the entire speed
trange
t Sensor short circuit proof and
t protected versus reverse polarity error
A5S Overall View

A5S sensors – the best choice for demanding applications
The correct choice of sensor is always a prerequisite to attaining a successful solution.
Our A5S sensors are based on the proven Differential-Hall-Effect principle. Their low
end of 0 Hz allows to monitor the machine down to zero speed. They are contact-free,
wear-free, maintenance-free and unsusceptible versus external magnetic stray fields
and machine vibration. These characteristics make the series of A5S sensors especially
suited for all applications where high levels of accuracy and reliability are at a premium.
In contrast, other sensors like magnet inductive or static Hall-sensors do not meet
these demands.
Each sensor in the series is available in various lengths and diameters and comes with
a choice of connections. However, functionally all sensors have the same characteristics. The stainless steel sensor housing is sealed at the front and is pressure resistant
(>200bar). A flat shaft is available or with a screw-in thread M12x1, M14x1, M14x1,5,
M16x1, M16x1,5, M18x1, M18x1,5, M22x1, 5/8-18UNF-2A. Customized dimensions

t Accepting fine and coarse profiles,
t as gear wheels, slots, cams, holes in
t any ferrous material
BENEFITS
t Contact-free with a large air gap, so
t the potential for damage is eliminated
t Wear-free due to its unique design
tprinciple
t Maintenance-free during Lifetime,
t therefore minimized TCO
t Unsusceptible versus external
t magnetic stray fields and machine
tvibration
t Operates down to zero speed
t Can not be damaged by faulty wiring
t Almost every target profile can
t be used
t A5S Sensors do not influence each
t other, no mounting distance in
t between is required

and thread specifications are possible.
To meet the particular requirements of hazardous areas we provide specialized types
which are ATEX / IECEx certified, as well as being approved for other international
standards such as UL / CSA and EAC (Russia, Kazakhstan and Belarus Customs Union).
For Ex Zone 0 or 1 we provide an intrinsically safe implementation in conjunction with
our Barrier D461, for Ex Zone 2 a non-sparking (non-incendive) variation is available.
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