IFM Electronic efector300 SD5000, Руководство по эксплуатации

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9
UK
Characteristics of the analogue output to the standard IEC 60947-5-7
1: Output current in mA
2: Operating area
3: Measuring range
4: Range between analogue start point and analogue end point
5: Error message [Err] is displayed
6: Final value of the measuring range (VMR)
7: Error message [OL] is displayed (= overload)
8: Analogue end point (AEP): determines at which measured value the output signal is
20 mA�
9: Curve of the analogue signal with shifted analogue start point
10: Curve of the analogue signal at factory setting
11: Analogue start point (ASP): determines at which measured value the output signal is
4 mA�
12: Error message [UL] is displayed (= underload)
13: Error message [Err] is displayed
Minimum distance between ASP and AEP = 25 % of the final value of the
measuring range�
4.7 Setting of the standard conditions of the volume flow
The unit is adjusted to a standard volume flow to DIN ISO 2533, i�e� volume flow
at 1013 hPa, 15 °C and 0 % relative air humidity�
The unit can be set to different standard conditions:
• Via the menu item [rEF�P] the standard pressure is set, which serves as a refer-
ence for the measured and display values for volumetric flow (→ 9.5.5).
• Via the menu item [rEF�T] the standard temperature is set, which serves as a
reference for the measured and display values for volumetric flow (→ 9.5.6).
4.8 Low flow cut-off (LFC)
With this function small volumetric flow quantities can be suppressed (→ 9.5.7).
Flows below the LFC value have no effect on the display and output signals�
Example: For LFC = 0�5 volumetric flow quantities below 0�5 Nm³/h are sup-
pressed�