Endress+Hauser Smartec CLD18, Руководство по эксплуатации

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Smartec CLD18 Commissioning
Hauser 31
8.4.3 Measuring range switch (MRS)
Measuring range switching involves a parameter set changeover for two substances:
• in order to cover a large measuring range
• in order to adjust temperature compensation in the event of a product change
The two analog outputs can each be configured with two parameter sets.
• Parameter set 1:
– The parameters for the current outputs and the damping can be set Setup in the menu.
– The alpha coefficient for temperature compensation can be set Setup / Extended setup /
Input in the menu.
– Parameter set 1 is active if the "MRS" binary input is Low .
• Parameter set 2:
– The parameters for the current outputs, the damping and the alpha coefficient for
temperature compensation can be configured Setup / Extended setup / Remote switch in
the menu.
– Parameter set 2 is active if the "MRS" binary input High is .
The settings for parameter set 1 are also listed in Extended setup / Analog output the
menu.
Technical data→  41
8.5 Calibration (Calibration menu)
In the case of the Smartec CLD 18, the air set and the correct cell constant have already been
configured at the factory. A sensor calibration is not necessary during commissioning.
8.5.1 Types of calibration
The following types of calibration are possible:
• Cell constant with calibration solution
• Air set (residual coupling)
8.5.2 Cell constant
General
The calibration of a conductivity measuring system is always performed in such a way that the
suitable calibration solutions determine or verify the exact cell constant. This process is
described in the standards EN 7888 and ASTM D 1125, for example, and the method for
producing a number of calibration solutions is explained.