ALMEMO
®
D7 digital sensors
The latest ALMEMO
®
D7 digital sensors have been designed to overcome all the limita-
tions experienced with earlier sensors regarding measurable variables, speed, range of
measured values, and number of channels per sensor. It is also possible to perform effi-
cient measuring operations simultaneously using high-speed and low-speed sensors with
any range of measured values. It is even possible, via a menu stored in such sensors, to
configure and use new measuring functions and quantities which ALMEMO
®
devices do
not themselves support. All this makes the new ALMEMO
®
D7 system flexible and su-
stainable beyond compare. Communication between sensors and the measuring instru-
ment is usually handled over a serial interface. D7 sensors can for this reason only be
used in conjunction with new ALMEMO
®
V7 devices. A sliding average can be confi-
gured internally for up to four primary channels.
1.Operation as sensor on ALMEMO
®
V7 measuring instruments
ALMEMO
®
D7 sensors supply their definitive digital measured values from up to 10
measuring channels virtually simultaneously over the serial interface to the ALMEMO
®
V7 device where they are saved and / or output. Function channels can only be program-
med and used by the device itself. If the user prefers that a particular measuring channel
should not be displayed the measuring quantity and range can be switched off and deacti-
vated as usual via the ALMEMO
®
device; it can be reactivated in the same way. The
sensor is powered via the measuring instrument.
Extension
The operating radius of these sensors when connected to a measuring instrument can
be extended by means of extension cable ZAD700-VKxx; measured values and
connector programming can then be transmitted interference-free in serial form via an
RS-422 driver. For electrical isolation adapter cable ZAD700-GT can be used.
1.1.Atmospheric pressure measurement and compensation
Some measurable variables (those in the measuring range list marked 'with PC') are af-
fected by atmospheric pressure and failure to take account of this may lead to substantial
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