How To Measure Quality

CAPAC^® - CAPAC^® FD - FFT/SRL

In-line Capacitance Measurement with CAPAC^® Systems.

The measurement is based on the unique and patented principle of the "active measuring tube". This system offers outstanding accuracy and stability. The measurement is not influenced by the water quality (pH value, etc.) or the line speed.

		Ultra Short, Low Noise Measuring Tubes For Minicoax, Coax and LAN Cables. Advantages with a single 10 mm measuring segment : High length resolution with low noise level FFT analysis and SRL prediction up to 6 GHz 600 Hz bandwidth of measuring system High absolute accuracy Compact and robust design

Important Features: Precise continuous measurement of the capacitance of singles and cables. "Pinhole" function. Detection of pores and tears in the insulation. Direct connection of SRL/FFT Systems.

		Your Advantage: Communication with host computers. Statistical monitoring and documentation. Distance between sensor and processor up to 200 m (656ft).

Systems Configurations

The basic system consists of a MR measuring tube and an electronic unit in water resistant compact housing, protected as per IP 65. The compact box offers the user all modern data ports for connection to processors and display systems from ZUMBACH or to host computers and to local area networks.

Measuring Tubes

Ultra Short Tubes (specially for FFT analysis and SRL prediction)

		Electrode Lengths
	Max. Cable Diameter	Passive Tubes
MR12.10HS	8 mm (.31 in)	10 mm (.394 in.)
MR36.10HS	24 mm (.94 in)	10 mm (.394 in.)
MR68.10HS	45 mm (1.8 in)	10 mm (.394 in.)

Standard Tubes

		Electrode Lengths
	Max. Cable Diameter	Passive Tubes	Active Tubes
MR12	8 mm (.31 in)	50 mm (1.97 in.)	100, 200 mm (3.94, 7.87 in.)
MR20	13 mm (.52 in)	50 mm (1.97 in.)	100, 200 mm (3.94, 7.87 in.)
MR36	24 mm (.94 in)	50 mm (1.97 in.)	100, 200 mm (3.94, 7.87 in.)
MR68	45 mm (1.8 in)	50 mm (1.97 in.)	100, 200 mm (3.94, 7.87 in.)

All measuring tubes are available with active electrode length of 10 mm (.39 in) or 50 mm (1.97 in), 100 mm (3.94 in), or 200 mm (7.87 in).

Electronic Units

	CAPAC^® HS ... AA / AI	CAPAC^® HS ... PA / PI
Measuring Tube	C / CD (active)	HS (passive)
Electrode Length	100/200 mm (3.94/7.87 in.)	10 or 50 mm (.39 or 1.97 in.)
Band Width Adjustable	1... 40 Hz	1... 600 Hz

Fault Detection on Cable Jackets with CAPAC^® FD

CAPAC^® not only offers capacitance measurement but also detection of minute capacitance deviations.

For all cable types, especially for unshielded products.
Also works on conductors, which are not grounded.
Detects holes, tears, etc.
Measuring range 0 ... 1800 pF/m. (0 ... 548 pF/ft.)

In-Line Analysis (FFT) of Structural Return Loss (SRL)

This tool allows the prediction of structural return loss during manufacturing of the product. All standard systems are equipped with a very fast analog output, making short capacitance variations available. This signal is fed into a processor for FFT analysis and the change in cable impedance is displayed on the screen in real time.