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Operating Instructions
If the character
appears at the left hand side of the display the measuring limits are exceeded; the
previous setting is not changed.
If
appears in the display the set span is greater than the double max. span. If the
-keys are pressed simultaneously for about 2 s, the full scale is set to 0.0000.
4.3.3.2 Setting start of scale and full scale without pressure transmitter
It is possible to set the start of scale and full scale of the SITRANS P transmitter even if there is no pres-
sure line connected or pressure source available ("blind" calibration).
D To set start of scale
Select mode 5 using the M key
-
-
Use the
or
-
When pressing both
(in the selected engineering unit)
D To set the full scale
Select mode 6 using the M key
-
-
Use the
or
-
When pressing both
measuring limit (in the selected engineering unit)
Example 1
A transmitter with a maximum measuring span of 5 bar is to be calibrated to a measuring range of 0 to
3.52 bar to correspond to 4 to 20 mA.
-
Select engineering unit "bar" in mode 14
-
For the start of scale, set the value "0.0000" in mode 5
-
For the full scale, set the value "3.5200" in mode 6
Example 2
A transmitter with a maximum measuring span of 1.3 bar is to be calibrated to a measuring range of
456.7 to 123.4 mm Hg to correspond to 4 to 20 mA.
-
Select engineering unit "mm Hg" in mode 14
-
For the start of scale, set the value "456.7" in mode 5
-
For the full scale, set the value "123.4" in mode 6
Example 3
A transmitter with a maximum measuring span of 250 mbar is calibrated for a measuring range of
0 to 200 mbar to correspond to 4 to 20 mA. The measuring range is to be changed to a setting of 100
to 240 mbar.
-
For the start of scale, set the value "100.00" in mode 5
Select mode 6 using M key; the full scale "300.00 mbar" is displayed
-
28
key to set the start of scale in the selected engineering unit
and
keys simultaneously for about 2 s, the start of scale is set to zero
key to set the full scale in the selected engineering unit
and
keys simultaneously for about 2 s, the full scale is set to the upper
7MF4232
and
C79000-B5676-C92-01
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