CapFox EFT 7:
EFT 7 capacitance level indicator forms with its associated probe a single compact unit.
The unit is available with either a flexible band electrode or a rigid rod probe.
Capacitance level indicator for continuous measurement of levels in tanks and containers with filling heights of 200 mm to 3,000 mm. Suitable for non-conducting liquids, especially fuel oil or diesel.
EFT (with flexible band electrode): Part no. 52107
The flexible band electrode can bused for liquid levels from a minimum of 1,150 mm to a maximum of 3,000 mm.
EFT (with rigid rod probe): Part no. 52108
The rod probe version with concentric screen tube is used for applications involving small containers with heights or diameters 200 mm to 1,500 mm. Please specify the length of the rigid rod probe when ordering.
CapFox EFM:
The capacitance level indicator consists of a series CapFox® EFM evaluation unit with digital display, a probe and a pre-amplifier which is factory fitted in the probe head. CapFox® EFM 741 provides only indication. 
CapFox® EFM 752 indication plus one limit switch. The fully adjustable limit switch for a min. or max. signal, with variable hysteresis, can be used for control functions (voltage- free relay contact). CapFox® EFM 762 has two independently adjustable limit switches to control filling/emptying processes.
The choice of probe (partly or fully insulated, rigid or flexible) 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.
For continuous level measurement in containers, silos, tanks or filling systems. Suitable for liquid, powdery, electrically conducting or non-conducting media. Also suitable for pressurized or vacuum tanks.
EFM 741: Part no. 51714
EFM 752: Part no. 51752
EFM 762: Part no. 51762
CapFox S 74x:
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 Ex zone.
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.
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 pressurized or vacuum tanks.
S 74x AC 230 V: Part no. 51745
S 74x DC 24 V: Part no. 51746
HF-pre-amplifier Ex: Part no. 51791, insert Ex type 3640 021 exclusively for the CapFox S 74x to ensure the internsic safety of the circuit. The pre-amplifier is factory fitted in the probe head.
Probes for capacitance level indicator