Multi Channel Systemcapa 600NCDT

APAC

MICRO-EPSILON

Authority in Displacement Measurement

SENSORS & SYSTEMS

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Non-Contact

Capacitive

Displacement

Measurement

43

The operating principle of non-contact ca-

pacitive displacement measurement used

by the capaNCDT system (capacitive Non-

contact Displacement Transducer) is based

on the ideal parallel plate capacitor. The two

plate electrodes are formed by the sensor

and the target opposite.

If an AC current with constant frequency flows

through the sensor capacitor, the amplitude of

the AC voltage on the sensor is proportional

to the distance between the capacitor elec-

trodes; an adjustable compensating voltage

is simultaneously generated in the amplifier

electronics. After demodulation of both AC

voltages the difference is amplified and out-

put as an analog signal.

The capaNCDT system evaluates the reactan-

ce Xc of the capacitor which changes strictly

in proportion to the distance:

This theoretical relationship is put into practice

by constructing the sensors as guard ring

capacitors.

Non-contact displacement measurement

The high linearity is in the measuring principle

capaNCDT 600

capaNCDT 600

features

Areas of use

The capaNCDT 600 is de-

signed for industrial use in

production plant and for

measuring and testing during

in-process quality assurance.

Illustrated are examples

showing only a small selection

of the numerous possibilities.

1 -

2 -

3 -

4 -

5 -

6 -

vibration, amplitude,

clearance, run-out

displacement, distance,

position, elongation

deflection, deformation,

waviness, tilt

dimensions,

measuring of tolerances,

sorting, part recognition

stroke, deformation, axial

shaft oscillation

in-process quality-control,

dimensions test

1 2

5 6

Xc = capacitance C =

Xc = constant distance

area

distance

1

j C� �r

�0

capaNCDT - sensors are wear-free and

maintenance free

Nearly temperature independent

High zeropoint stability

The sensors exert no interference force

on the target

Independent of variations in conductivity

of electrically conductive target materials�

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System structure

Block diagram

The capaNCDT 600 can be used for multi-channel operation and has been designed

as a modular system. The sensors are connected to the signal conditioning electron-

ics (Euro size cards) via a preamplifier module.

MICRO-EPSILON

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1 2 3 4 5 6 7 8

The system (n channels)

consists of:

an electronic cabinet with

power supply

a display/interface unit

(optional)

an oscillator module

n demodulator modules

n preamplifier modules

n sensors

n sensor cables

n preamplifier connecting

cables

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Technical specifications

capaNCDT 600

Certified acc. to

DIN EN ISO 9001: 1994

Technical specifications are valid for electrical

conductors (metal) as reference material at

20 °C (70 °F) ambient temperature and for the

standard length (1 m / 3.28 ft) of sensor cable.

Measurement with insulating target is possible.

Linearization characteristics must be adjusted

accordingly.

1/1

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1/2

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Measuring range

Linearization and Calibration

capaNCDT 600 systems are calibrated for metallic

targets at the factory (output 0-10 Volt). In special

target materials or critical sensor mounting appli-

cations the rated range of the output characteristic

can be adjusted and optimized through the use of

the “zero” and “gain” potentiometers.

When insulators are used as targets, a 3 point

linearization is necessary.

The adjustment is carried out at three distances

(1= zero; 2= mid range; 3= full-scale) which

are measured by an independent reference.

With metallic targets an extension of the measuring

range by a factor of 2 - 3 is possible, but accuracy

is reduced.

Electrical conductors and

insulators as targets

The linear characteristic of the output signal is

achieved without extra electronic linearization

when measuring against targets made of

electrically-conductive materials (metals).

Changes in the conductivity do not affect

sensitivity or linearity.

The capaNCDT system also measures

against insulating materials; linear per-

formance for this category of targets is

achieved by special electronic circuit.

A constant relative dielectric strength of the

material is, however, necessary for accurate

measurement.

Electrical conductor

Insulator

Technical data

MICRO-EPSILON

Sensor

Specification S6

01

-0,2

S6

01

-0,0

5

S6

00

-0,2

S6

10

-0,7

S6

01

-0,5

S6

00

-1

S6

01

-1

S6

00

-2

S6

00

-3

S6

00

-5

S6

00

-10

mm .05 .2 .2 .5 — 1 1 2 3 5 10

inch .002 .008 .008 .019 — .039 .039 .078 .117 .195 .39

mm (� ) — .4 .4 1 .7 2 2 4 6 10 20

inch (� ) — .015 .015 .039 .027 .078 .078 .156 .234 .39 .78

Linearity � ±0.2 % FSO ±µm .1 .4 .4 1 1.4 2 2 4 6 10 20

stat. (...30 Hz)

� 0.004 % FSOµm .002 .008 .008 .02 .03 .04 .04 .08 .12 .2 .4

dyn. (...6 kHz)

� 0.002 % FSOµm .01 .04 .04 .1 .14 .2 .2 .4 .6 1 2

mm 6 6 6 8 7 10 10 20 30 40 60

inch .23 .23 .23 .31 .27 .39 .39 .78 1.17 1.56 2.34

Weight Sensor g 2 2 2.5 12 3.5 7.1 7.1 61 95 120 230

mm 1.3 2.3 2.3 3.9 2.5 5.5 5.5 7.9 9.8 12.6 17.8

inch .05 .09 .09 .15 .1 .21 .21 .31 .38 .49 .69

mm .8 1 1 1.4 .4 1.5 1.5 4 8.1 11.8 18.1

inch .03 .04 .04 .05 .015 .06 .06 .16 .32 .46 .71

mm 3 5 5 7 — 9 9 17 27 37 57

inch .12 .2 .2 .27 — .35 .35 .66 1.05 1.44 2.22

mm — 7 7 10 8 12 12 24 36 48 72

inch — .27 .27 .39 .31 .47 .47 .94 1.4 1.87 2.8

Zero ±µm/°C .03 .06 .03 .06 .17 .17 .06 .17 .17 .17 .17

Sensitivity -ppm/°C 3 11 3 30 30 30 11 30 30 30 30

Long term stability2

V/mm 200 50 50 20 � 10 10 10 5 3,33 2 1

V/inch 5080 1270 1270 508 � 254 254 254 127 83.58 50.8 25.4

Output Voltage

Band width static .... 4 kHz (-0.1 dB), ....6 kHz (-3 dB)

Sensor -50 to +200 °C / -60 to +400 °F (S600-1 max.150°C / 300°F)

Sensor cable -50 to +150 °C / -60 to +300 °F

Preamplifier cable -20 to +80°C / -4 to 176 °F

Preamplifier +10 to +50 °C / +50 to +125 °F

Electronics +10 to +50 °C / +50 to +125 °F

Air humidity Sensor

Elecrtronics

FSO = Full Scale Output 1 µm = 1 micron

1) The measuring range for insulators is approximate and depends upon the relative dielectric constant of the insulator

IP 54

Temp.

range

� 0.02 % FSO / month

5 to 95 % (non condensing)

Electromagnetic

compatibility (EMC)

EN 50081-1 Spurious emission

EN 50082-2 Immunity to interference - uncertainty of measurement max. 2.6 %

Protection

classIP 40 (MF 684 IP 20)

0 - 10 V

Power supply 230 / 115 VAC

Sensor

Sensorcable

Preamplifier

el. cond.

(metal)

Temp. stab. electronics � � 0.01 % FSO / °C

Min. diameter

of targetInsulator

2) At reference temperature 20 °C (68 °C) and steady state

Guard ring width

Measuring

range

Sensor outer

diameter

Active measuring area

(diameter)

el. cond.

(metal)

Insulator 1

Resolution

Sensitivity

Temp. stab.

sensor

Three housing options are available for the

capaNCDT 600. All cabinets are cross-wired

via a motherboard for 8 or 3 measuring

channels (demodulator modules), an oscillator

module and a display module. The power

supply is integrated into the housing as a

backplane module.

Electronic cabinet

Electronic cabinet RS 649

capaNCDT 600

Cabinet RS 649

Modules:

DD 600

OS 602

3 x DL 604

Cabinet RS 684

Modules:

DD 600

OS 602

5 x DL 604

3 x LS 803

Model DescriptionChan-

nels

Height

units

Width

units

Power

supply

Technical

Data

RS 684 Bench top cabinet (19") 8 3 84 PS 800

with aluminium profile frame integrated

and cover of steel plate

accessories:

plexi-glass-front-cover

handle

RS 649 Bench top cabinet 3 3 49 PS 800

of impact resistant integrated

plastic with

plexi-glass-front

MF 684 Mainframe (19") 8 3 84 PS 800

(without cover) integrated

A dust-proof, splash-proof steel housing (IP 55) is available for use

in harsh environments.

Power supply:

alternatively 110-

120/220-240 VAC

at 50/60 Hz

Power:

120 VA max.

Fuse:

1 A slo-blo (220 V)

2 A slo-blo (110 V)

Internal operating

voltage/ current:

± 15 VDC / 1.5 A

+ 5 VDC / 2.5 A

Dimensions in mm (inch)

Electronic cabinet RS 684

MICRO-EPSILON

MF 684

482.5 (18.8)

425.5 (16.6)

13

2(5

.14

)

23.5 (.9)25 (.98)

337 (13.14)

RS 649

281 (11)

13

8(5

.4)

40 (1.6)

348 (13.6)

34 (1.33)

ple

xi-g

lass

fro

nt

co

ver

470.8 (18.4)

14

7.1

(5.7

4)

RS 684

29.5 (1.15) 35.5 (1.4)

341.5 (13.3)

ple

xi-g

lass

fro

nt

co

ver

(op

tio

na

l)

oscillator module

Model OS 602

The feeds all measuring

channels (sensors) with a frequency- and

amplitude-stable AC voltage.

Frequency: 20 kHz

Module width: 7 TE (= 35 mm / 1.37 inch)

The demodulator modules can be used

universally for demodulation and amplification

of the distance-dependent measurement

signal. The linearization function is used only

for measurements on insulator materials or for

extending the measuring range of metallic

targets. Zero, gain and linearity adjustments

can be made with a trimmer or helipot.

Electronic modules

capaNCDT 600

Demodulator

module

DL 600

DL 604

U-output

10 Volt

Trimmer Helipot Output

current

Output

impedanceZero

�

The is used for

signal display and output when measuring,

calibrating or checking the system.

3 ½ - digit digital voltmeter with measuring

range switch (19.99 / 1.999 Volt)

Decimal point can be selected on the board

24-step channel selector

BNC-output socket with

low pass filter 4th order 10 kHz

Module width: 14 TE (=70 mm / 2.73 inch)

digital display module

Model DD 600

Demodulator modules

The preamplifier is a required link between the sensor and the signal conditioning electronics

and enables large distances between the measurement site and the main electronics.

The sensor sensitivity can be tuned with a trimmer on the preamplifier.

The preamplifier electronics comes with a rugged cast aluminum casing and is installed “on site”.

Preamplifier modules PA 601 / PA 601 M

Preamplifier cable

MICRO-EPSILON

Preamplifier

cable

C 604-5

C604-10

2 straight

connectorsLength

Dimensions in mm (inch)

PA 601M

(miniature size)

PA 601

(standard size)

125 (4.9)125 (4.9)

capaNCDT SERIES 600capaNCDT SERIES 600

MICRO-EPSILON

se

ns

or

sig

na

l

64

(2.5

)64

(2.5

)

56

(2.2

)56

(2.2

)

48

(1.9

)48

(1.9

)

74 (2.9)74 (2.9)

62 (2.4)62 (2.4)

capaNCDT SERIES 600capaNCDT SERIES 600

MICRO-EPSILON

se

ns

or

sig

na

l

57

(2.2

)57

(2.2

)

80 (3.1)80 (3.1)

15

(.6)

15

(.6)

37

(1.4

)37

(1.4

)

22 (.85)22 (.85)

10

(.4)

10

(.4)

5 (.2)5 (.2)

5 (.2)5 (.2)

13

(.5)

13

(.5)

13

(.5)

13

(.5)

The sensors are designed as guard ring

capacitors and are connected to the pre-

amplifier electronics with a 1m (3.28 ft)

long triaxial cable. The sensor cables are

equiped with high quality plugs.

All standard sensors can be used within

a sensitivity range from .5 to 1 % without

recalibration.

Custom sensors are available.

All sensors can be installed free-standing

or flush and are secured by clamping or

with a chuck.

Sensor installation

Sensors and Sensor cables

Sensor cable

capaNCDT 600

The sensor and preamplifier

electronics are connected by

a double screened,

1 m (3.28 ft) long sensor cable;

a cable up to 5 m

(16.4 ft) is optional.

Clamping ring

mounted

Grub screw

mounted

(plastics)

Sensor cables

dimensions mm (inch)

Sensor

cable

C602/90-1

Sensor

cable

C602-1

Sensor

Sensor

cable

C601-1

Model2 straight

connectors

1 straight +

1 angled

connector

suitable for sensors

C601-1•

S601-0,05 / S601-0,2 / S600-0,2

S601-0,5 / S610-0,7

C602-1•

C602/90-1•

S600-1 / S601-1 / S600-2

S600-3 / S600-5 / S600-10

Sensor dimensions in mm (inch)

MICRO-EPSILON

12 (.46)

5 (.2)

S 601-0,2 S 600-0,2

12 (.46)

8 (.31)

21 (.82)

S 600-1S 601-1

20 (.78)

11 (.43)

= Connector side

S 600-3S 600-2

S 600-10

S 600-5

S 601-0,5

40 (1.56)

12 (.46)

5 (.2)

S 601-0,05

12 (.46)

S 610-0,7

DimensionFit tolerance

µm

7 h70

-15

7 f7- 13

- 28

8 h70

- 15

20 h70

- 21

6 f7- 10

- 22

6 e7- 20

- 32

10 f7- 13

- 28

1 µm = 0.001 mm = 1 micron

Software tool

capaNCDT and ICONNECT (Win 95 / NT 4.0)

are combined for governing and control tasks.

Additional features include:

Automated documentation, statistical analysis

and storage of measurement results

Display of measurement data and

data bank system connection

Process control and operation (PLC)

Multi-channel

Upgrade for new data types, Internet connection

A custom-designed application can be programmed

in ICONNECT by MICRO EPSILON upon request.

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capa 600 Process integrationNCDT

MICRO-EPSILON

MC25

MC2.5

MC25D

Micrometer calibration fixture

Range 0 - 25 mm (0 - 1 ft)

Division 2 µm

Adjustable offset (zero), for all sensors

Micrometer calibration fixture

Range 0 - 2.5 mm (0 - 0.1 ft)

Division 0.1 µm

for sensors S 601- 0,05 thru to S 600-2

Digital micrometer calibration fixture

Range 0 - 25 mm (0 - 1 ft)

Adjustable offset (zero), for all sensors

Analog function plug-in modules

can be integrated in the

Eurocard cabinets:

Analog arithmetic functions

Limit value monitoring

Auto-zero

Peak-to-peak value

Detailed information upon request

For industrial automation, quality control, process monitoring and control applications,

the capaNCDT 600 can be used as a complete data processing system.

Measured data conditioning, processing and documentation can be accomplished with:

Accessories

Modifications reserved / Y9761021-B/01.99RWI

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Koenigbacher Strasse 15

D-94496 Ortenburg / Germany

Phone: +49/85 42 168-0 • Fax: +49/85 42 168-90

e-mail: info@micro-epsilon.de

http://www.micro-epsilon.com

3200 Glen Royal Road, Suite 110

Raleigh, NC 27617 / USA

Phone: 919/787-9707 • Fax: 919/787-9706

e-mail: me@micro-epsilon.com

http://www.micro-epsilon.com

Certified acc. to DIN EN ISO 9001: 1994

MICRO-EPSILON MESSTECHNIK

GMBH & CO. KG

MICRO-EPSILON

Representative:Representative: