Vaisala HMP230 - Manual (Page 71)

HMP230 SERIES
M210225en-B User's Guide
65
• the LED on the left flashes; set the low end of channel 1 with the ar-
row keys and press ENT
• the second LED from the left flashes; set the high end of channel 1
with the arrow keys and press ENT
• the LED on the left flashes; set the low end of channel 2 with the ar-
row keys and press ENT
• the second LED from the left flashes; set the high end of channel 2
with the arrow keys and press ENT
The analogue outputs are calibrated to ensure that outputs are correctly scaled:
for example, when the output is scaled to 4...20 mA, the low end of the scale
is 4 mA and high end 20 mA exactly. However, when 0... 20 mA output is
used, the output cannot be adjusted to exactly 0 mA, but to 50 µA. When 0...1
V, 0...5 V or 0...10 V output is in use, the output is adjusted to 50 mV. The
following table summarizes the correct output values.
Summary of the correct output values:
Output scale:
0...20 mA
4...20 mA 0...1 V 0...5 V 0...10 V
low end: 50 µA 4 mA 50 mV 50 mV 50 mV
high end: 20 mA 20 mA 1 V 5 V 10 V