Yokogawa DAQWORX - Manual (Page 57)

4-10 IM WX102-01E
Setting the Span (SPAN)
Set the left and right spans within the limits of an input range. In the SPAN menu item,
the left-hand value is the left span and the right-hand value the right span. Set the span
within the measuring range. The measurable limits vary depending on the measuring
range you select, as shown below.
25V-0.5A 25V-5A 250V-0.5A 250V-5A
Effective voltage
Vi (i=1,2,3,13,0) 0.00 to 25.00Vrms 0.00 to 25.00Vrms 0.0 to 250.0Vrms 0.0 to 250.0Vrms
Effective current
Ii (i=1,2,3,13,0) 0.0000 to 0.5000Arms 0.000 to 5.000Arms 0.0000 to 0.5000Arms 0.000 to 5.000Arms
Active power
P1,P2,P3 –12.50 to 12.50W –125.0 to 125.0W –125.0 to 125.0W –1250 to 1250W
Active power
P13 –25.00 to 25.00W –250.0 to 250.0W –250.0 to 250.0W –2500 to 2500W
Active power
P0 –37.50 to 37.50W –375.0 to 375.0W –375.0 to 375.0W –3750 to 3750W
Apparent power
VA1,VA2,VA3 0.00 to 12.50VA 0.0 to 125.0VA 0.0 to 125.0VA 0 to 1250VA
Apparent power
VA13 0.00 to 25.00VA 0.0 to 250.0VA 0.0 to 250.0VA 0 to 2500VA
Apparent power
VA0 0.00 to 37.50VA 0.0 to 375.0VA 0.0 to 375.0VA 0 to 3750VA
Reactive power
Var1,Var2,Var3 0.00 to 12.50Var 0.0 to 125.0Var 0.0 to 125.0Var 0 to 1250Var
Reactive power
Var13 0.00 to 25.00Var 0.0 to 250.0Var 0.0 to 250.0Var 0 to 2500Var
Reactive power
Var0 0.00 to 37.50Var 0.0 to 375.0Var 0.0 to 375.0Var 0 to 3750Var
Power factor
PFi(i=1,2,3,13,0) –1.00 to 1.00 –1.00 to 1.00 –1.00 to 1.00 –1.00 to 1.00
Phase
PHi(i=1,2,3,13,0) –80.0 to 80.0deg –80.0 to 80.0deg –80.0 to 80.0deg –80.0 to 80.0deg
Frequency
FREQ 45.00 to 65.00Hz 45.00 to 65.00Hz 45.00 to 65.00Hz 45.00 to 65.00Hz
Precautions in Power Module Measurement
Input the voltage or current being measured at a level between 10% and 100% of the
measuring range. The instrument bases its calculations of all other parameters on the
frequency of V1. Extra care must therefore be taken when setting the input level of
V1. If the input level fails to fall within the given limits, there is no guarantee that the
measurement of any other parameters will be reliable.
4.3 Setting Input Range, Span, and Linear Scaling