IFC 110 F V2.0 IFC 110 F-EEx V2.0 - Krohne

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Sect. 7.7 Part C Special applications, functional checks, service, and order numbersChecking the setpoint reading1) Switch on the power supply and allow at least 15 minutes for ”warming up”.2) Turn switch D (GS 8 A front panel) to ”0”.3) Adjust zero to 0 or 4 mA with the 10-turn potentiometer P (GS 8 A front panel), dependingon the setting in Fct. 1.05, deviation
Part C Special applications, functional checks, service, and order numbers Sect. 7.7ExampleFull-scale range Q 100% = 200 m³/h (Fct. 1.01)Meter size DN = 80 mm = 3 inch (Fct. 3.02)Current at Q 0% I 0% = 4 mAQ 100% I 100% = 20 mA } (Fct. 1.05)Pulses at Q 100% P 100% = 200 pulses/h (Fct. 1.06)Flow sensor constant GK = 3.571 (see instrument nameplate)Constant (V in m³)(t in h) K = 7074 (see table)(DN in mm)Calculation of ”X” and setting of ”Y”X =Q100% x K 200 x 7074GK x DN 2 = 3.571 x 80 x 80= 61.905Y = 80, setting of switch Y, see GS 8 A front panel(comes closest to the value of X and is smaller than X).Calculation of setpoint readings I and fI = I 0% +Y 40(IX 100% - I 0% ) = 4 mA +61.905(20mA - 4mA) = 14.3mADeviations are permissible between 14.1 and 14.6 mA (equivalent to ± 1.5 %).f =Y 40x PX 100% =61.905x pulses / h = 180.9 pulses/hDeviations are permissible between 178.2 and 183.6 pulses/h (equivalent to ± 1.5 %).If you need to return your flowmeter to KROHNE,please refer to the last-but-one page of these instructions.05/2003 <strong>IFC</strong> <strong>110</strong> F 79
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IFC 110 F V2.0 IFC 110 F-EEx V2.0 - Krohne

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