Charge amplifier

CMD600/CMD600P

Transducers that can be connected

Piezoelectric sensors

Charge inputs

1

Measuring range

adjustable as required or via SensorTeach for fast teach-in processes

pC

±50 … ±600 000

Calibrated measuring ranges

% Fnom

100

Signal output, analog

Output voltage

V

−10 …+10

Signal source

current measured value, min./max. value, peak-to-peak value

Output voltage limiting

V

11.5

Output current, max., short-circuit proof

mA

10

Output resistance

Ω

< 5

Interference suppression between input and output (GND)

(0 … 1000 Hz)

dB

> 60

Output interference signal

(0.1 Hz … 1 MHz, peak-to-peak)

over the full measuring range ±50 … ±600 000 pC up to

30 kHz filter frequency

mV

< 30

Time from switch-on to stable output values

ms

300

TEDS as per IEEE1451.4

1-wire

Measurement accuracy

Accuracy class (at 25°C)

%

< ±0.5

Repeat accuracy (at 25°C)

%FS

< ±0.05

Reset/Measure (operate) step

pC

< ±2 (typ. < 1)

Drift (at 20°C)

pC/s

< ±0.05

Analog signal output frequency response

Measurement frequency range (−3 dB)

kHz

30

Measuring range 50 pC to 32 000 pC

Measuring range 32 000 pC to 40 000 pC

kHz

24

Measuring range 40 000 pC to 60 000 pC

kHz

16

Measuring range 60 000 pC to 80 000 pC

kHz

12

Measuring range 80 000 pC to 100 000 pC

kHz

9.6

Measuring range 100 000 pC to 120 000 pC

kHz

8

Measuring range 120 000 pC to 180 000 pC

kHz

5.3

Measuring range 180 000 pC to 250 000 pC

kHz

3.8

Measuring range 250 000 pC to 400 000 pC

kHz

2.4

Measuring range 400 000 pC to 600 000 pC

kHz

1.6

Low-pass filter, selectable up to 20 kHz

Hz

1 … 20 000; 30 000

Runtime at 30 kHz cut-off frequency

μs

8.2

Runtime at 20 kHz cut-off frequency

μs

28

Runtime at 10 kHz cut-off frequency

μs

46

Runtime at 1 kHz cut-off frequency

μs

400

Runtime at 100 Hz cut-off frequency

ms

4

Runtime at 10 Hz cut-off frequency

ms

40

Filter characteristics

Fifth-order Bessel

High-pass filter, selectable

Hz

0.15; 1.5; Off

Offset

Output voltage offset

V

±10

Resolution

mV

10