Azbil MagneW FLEX+/PLUS+ MGG10C - Figure 2-10 Cable Usage Ranges; Grounding; Signal and Excitation Cable Specifications

Installation Azbil Corporation
2-12 Model MGG10C/14C - MagneW FLEX+/PLUS+ Converter
Grounding
CAUTION
ELECTRIC SHOCK HAZARD! Grounding is essential for accurate
measurement. The grounding resistance must be less than 100W.
Signal and excitation cable specications
For remote installations, the converter and detector are connected using a set of
dedicated cables (Model MGA12W). The signal cable connects the output signal
of the detector to the converter and the excitation cable feeds the excitation current
to the detector. You can obtain these cables from Azbil Corporation or purchase
commercially available cables. Integral owmeters already contain the converter to
detector connections.
The cables between the detector and converter should be no longer than 300 m (984
ft.), but the actual length depends on conductivity of the uid being measured.
The following cable diameters apply:
Signal cable - 11.4 mm (0.45 in.), 0.75 mm
2
(.0011625 sq. in.) or equivalent
commercially available cable (CVVS or CEEV, for example)
Excitation cable - 10.5 mm (0.41 in.), 2 mm
2
(.0031 sq. in.) or equivalent
commercially available cable (CVV, for example)
Cable dimensions and construction are shown on the following pages.
The following graphs show the ratio of uid conductivity to cable length and show
cable usage ranges for dierent diameter cables. The acceptable usage range for Azbil
Corporation’s cable Model MGA12W cables encompass both areas A and B in the
graphs below while commercially available cables are limited to area A only.
Figure 2-10 Cable usage ranges