Yokogawa DO202 2-Wire Dissolved Oxygen Analyzer Manual do Utilizador descarregar pdf (Página 25)

IM 12J05C01-01E

x The cable used to interconnect the devices needs to comply with the following

parameters:

Loop resistance R’: 15 … 150 /km; Inductance per unit length L’: 0,4 … 1 mH/km

Capacitance per unit length C’: 80 … 200 nF/km

(C’ = C’ line/line + 0,5 C’ line/screen if both line are floating)

(C’ = C’ line/line + C’ line/screen if the screen is connected to one line)

Length of spur cable: max. 30 m

Length of trunk cable: max. 1 km

Length of splice : max. 1 m

WARNING

- Substitution of components may impair Intrinsic Safety

- To prevent ignition of flammable or combustible atmospheres, disconnect power

before servicing or read, understand and adhere to the manufacturer’s live

maintenance procedures.

General Specifications 2-14

Application Doc. No.: IKE031-A10 P.5 to P.6

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Yokogawa DO202 2-Wire Dissolved Oxygen Analyzer Manual do Utilizador Página 25