Measuring Ranges
There are corresponding measuring ranges for sensors with a non-linear
characteristic such as 10 thermocouple types, Ntc and Pt100 sensors, infrared
sensors, and flow sensors (rotating vanes, thermoanemometers, pitot tubes).
Humidity sensors are available with function channels that also calculate humidity data
such as dew point, mixture ratio, vapour pressure and enthalpy. Even complex
chemical sensors can be used. The acquisition of measured data from other sensors
is easily possible by using the voltage, current and resistance ranges with individual
scaling in the connector. Existing sensors can be used without problems. Only the
corresponding ALMEMO
®
connector has to be connected using its terminals.
Furthermore, there are adapter connectors with an own microcontroller for digital
signals and for measuring frequencies and pulses. This way, nearly all sensors can be
connected to any ALMEMO
®
measuring instrument and are interchangeable without
requiring any settings.
Function Channels
Maximum, minimum, average values and differences of certain measuring junctions
can be programmed as function channels and can be processed and printed like
normal measuring junctions. Furthermore, function channels for special measuring
tasks are provided to determine the temperature coefficient Q/
∆
T and wet bulb globe
temperature.
Dimension
The 2 digit dimension can be altered for each measuring channel so that the display
and the printout will always indicate the correct dimension, for example when a
transmitter is connected. The conversion from °C to °F is automatically performed
according to the dimension.
Name of Measured Values
For identification of the sensors a 10-digit alphanumeric name is provided. It is entered
via the keypad or the interface and appears on the display, the printout or the
computer display.
Correction of Measured Values
For correcting measured values a zero point and slope (gain) correction can be
applied to the measured value of each measuring channel. This also allows for
sensors to be interchanged that usually, at first, require an adjustment (expansion,
force, pH). The zero point and the slope (gain) correction are virtually performed by
the push of a button.
Scaling
The base value and the factor allow for a further scaling of the corrected measured
value of each measuring channel for zero point and slope (gain). The decimal point
position can be set by the exponent. By setting to zero and entering the nominal value
the scaling values can be automatically calculated.
ALMEMO
®
2590-9
7
Function Range
