Afriso South Africa (Pty) Ltd
Capacitance level indicator with Ex approval CapFox® S 74x
For continuous level measurement in tanks and vessels in Ex zones 0, 1 and 2. Suitable for liquids, powders, electrically conducting or non-conducting media. Also suitable for pressurised or vacuum tanks.
The capacitance level indicator consists of a series CapFox® S 74x evaluation unit with digital display, a probe and an Ex pre-amplifier which is factory fitted in the probe head.
CapFox® S 74x has an intrinsically safe probe circuit. In order to guarantee the intrinsic safety of the circuit, the S 74x evaluation unit may only be used in conjunction with a type Ex 3640 021HF preamplifier and a rigid series 88 capacitance probe. The evaluation unit must be installed outside of the hazardous area.
The choice of probe (partly or fully insulated, rigid) depends on the properties of the material to be measured and the shape of the tank. Fully insulated probes must be used for conducting media. The probes are equipped with a capacitance voltage transducer (HF probe insert) in the probe head and are mounted vertically.
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