Niigata seiki LEVELNIC DL-S3 DL-BW, Руководство по эксплуатации

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-10-
[Variation of Measuring Range due to Movement of
Reference Point]
By operating the 0-Call switch or 1/2-Call switch, zero indication can be produced on a given
indication value or the indication value can be halved, thereby allowing the reference point of
indication to be moved.
However, the measuring range is limited by the indication value and the internal value possessed
inside by the device (the value that is first displayed when the device is switched on).
This device does not have a zero point of level.
The numeric value zero that is first displayed when the device is switched on (internal value) does
not necessarily coincide with the zero point of level.
Therefore, if a zero point of level is required for some measurement, it will be necessary to set up
a zero point of level anew every time the device has been switched on. This brings about the
advantage that measurement is conducted each time with reference to the zero point properly
adjusted, and thus errors resulting from deviation of a zero point are prevented.
To set up a zero point of level, operations of 0-Call and 1/2-Call are performed.
For details, see Section [Zero-Point Setting].
To secure the measuring ranges of
±
5 mm/m and
±
0.286º with their center at the zero point of
level (explanation from here on refers to the unit of mm/m), the device has been set to operate in
a range of
±
5.25 mm/m in internal value, which figures in the deviations of the zero-point of
internal values and zero-point of level.
Indication values are given over an indication range of
±
5 mm/m.
The measuring range is restricted by these two conditions.
In the figures illustrating the measuring ranges, the number shown above represents the internal
value possessed inside by the device, while the number indicated below is the value that is output
on the display panel or delivered as an external signal.
(In the explanation, the values are all in the unit of mm/m.)