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imc C-SERIES - Manual, Version 4 R 3 - 2018-10-19

108 Device description

Note

There is a voltage drop across the resistances of the leadwires and the internal measuring resistance

of 120

which is proportional to the amperage. This lost voltage is no longer available for the supply

of the transducer (2.4 V = 120

* 20 mA). For this reason, you must ensure that the resulting supply

voltage is sufficient. It may be necessary to select a leadwire with a large enough cross-section.

5.7.4 Sensors with current feed

Measurement of current-fed sensors, e.g. ICPs is possible with the DSUB-15 imc plugs. Therefore the

special connector ACC/DSUB-ICP2 is required.

For measurement of current-fed sensors, the special connector ACC/DSUB-ICP2 is required.

For the description of the measurement with current feed sensors, see here .

Note

The ACC/DSUB-ICP2 plug cannot be used together with triaxials.

5.7.5 Sensor supply

The C-50xx channels are enhanced with an integrated sensor supply unit, which provides an adjustable

supply voltage for active sensors. The supply outputs are electronically protected internally against short

circuiting to ground. The reference potential, in other words the sensor's supply ground contact, is the

terminal GND.

The supply voltage can only be set for a group of eight channels.

The supply outputs are electronically protected internally against short circuiting to ground. The

reference potential, in other words the sensor's supply ground contact, is the terminal GND.

Note

The voltage selected is also the supply for the measurement bridges. If a value other than 5 V or 10 V is

set, bridge measurement is no longer possible!

5.7.6 Bandwidth

The channels' maximum sampling rate is 100 kHz (10 µs). The analog bandwidth (without digital low-

pass filtering) is 5 kHz (-3 dB).

5.7.7 Connection

Reference

Please find here the DSUB-15 pin configuration

170

IMC C SERIES User Manual

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