HO-NP/SP33-1000 SERIES
Measuring range with external reference voltage
50
40
30
20
10
0
Upper limit: IP = 17.39 × Vref + 48.7 (Vref = 0.5 .. 1.65 V)
Lower limit: IP = 17.39 × Vref + 8.7 (Vref = 0.5 .. 1.65 V)
-10
-20
-30
HO 8 /SP33
0.5
1
1.5
Vref (V)
80
60
40
20
0
Upper limit: IP = 62.5 (Vref = 0.5 .. 0.883 V)
Upper limit: IP = - 32.81 × Vref + 91.3 (Vref = 0.883 .. 1.65 V)
Lower limit: IP = -32.81 × Vref + 16.3 (Vref = 0.5 .. 1.65 V)
-20
-40
-60
HO 15 /SP33
0.5
1
1.5
Vref (V)
80
60
40
Upper limit: IP = 62.5 (Vref = 0.5..1.65 V)
20
Lower limit: IP = - 54.35 × Vref + 27.17 (Vref = 0.5 .. 1.65 V)
0
-20
-40
-60
-80
HO 25 /SP33
0.5
1
1.5
Vref (V)
Figure 17 IP vs Vref for HO/SP33 series
Example with Vref = 0.5 V:
● The 8 A version has a measuring range from 0 A to 40 A
● The 15 A version has a measuring range from 0 A to 62.5 A
● The 25 A version has a measuring range from 0 A to 62.5 A
Example with Vref = 1.5 V:
● The 8 A version has a measuring range from -17.4 A to 22.6 A
● The 15 A version has a measuring range from - 32.6 A to + 42.4 A
● The 25 A version has a measuring range from - 54.3 A to + 62.5 A
Page 11/15
17September2013/Version 2 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
www.lem.com
LEM [ LEM ]
