Extension Of Transducer Wires; Figure 3 - 4-20Ma Transducer Connection Diagram - Maretron CLM100 User Manual

CLM100 User's Manual
WARNING
The CLM100 supplies loop power each the 4-20mA current loop
transducer. Do not connect the current loop wires from the transducer to
anything except for the terminals on the CLM100. Do not connect any
external power supply or gauge to the transducer wires that form the
current loop.
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Figure 3 – 4-20mA Transducer Connection Diagram

3.5.3 Extension of Transducer Wires

WARNING
The transducer cable may be extended. However, you must ensure that
when the transducer is connected to the CLM100 with the extended
cable, the excitation voltage measured at the transducer meets the
minimum excitation voltage specification of the transducer when the
transducer is sourcing 20mA.
The CLM100 supplies a minimum of 12V to each transducer at the maximum loop current of
20mA. In order to ensure that your transducer will work with extended wires, you should
calculate the voltage drop across the extension wires. The amount of voltage drop can be
calculated as follows:
Look up the resistance per unit length of the wire you are using (��
Be sure to use the value which matches your length measurement units:
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Transducer
CLM100 Screw Terminals
) from the following table.
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