Hach-Lange SC 1000 - Manual (Page 83)

81
Advanced Operations
The output current (OC) is a function of the process value (PV).
The output current is determined by formula (1) :
where:
OC=Output current
PV=Process value
LV=Low value
HV=High value
Figure 52 shows the output current depending on the process value, the set low value
and the set high value with an output range of 4 – 20 mA.
Figure 51 Output current with an output range of 0 – 20 mA
1 Output current (OC) (y-axis) 5 Low value (LV)
2 OC=f(PV) 6 0 mA
3 Process value (PV) (x-axis) 7 20 mA
4 High value (HV)
(1) OC = f(PV) = (PV – LV) ×
20 mA
HV – LV