YSI IQ SensorNet 2020 XT Terminal - Manual (Page 38)

Installation System 2020 XT USB
3 - 8 ba76019e01 12/2012
Checking the power
supply
Note
To make it easier it is assumed that all consumers are located at the
end of the cable section.
Fig. 3-3 Diagram to check the power supply
1 Determine the length of the cable section for the planned
installation.
2 Determine the sum of the power consumption of all consumers
along the cable section (including IQ sensors).
3 Enter both determined values as a point in the following
diagram.
4 Evaluation:
If the point is in the lower, valid range, no additional power
supply module is required.
If the point is in the upper, invalid range, an additional power
supply module is required. Install this power supply module in
the vicinity of the main consumers of this section, or, if not
possible, - starting from the primary MIQ power supply module
- approx. at that point of the section where the maximum cable
length is exceeded (see following example).