Datasheet

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Carlo Gavazzi Industri A/S

CD34CNFLFxxx

CD34CNFLFxxx ENG26/08/2019

Capacitive sensor, Foreground Suppression

Description

The CD34.. capacitive sensor is designed for

detecting water-based (conductive) liquids through

a non-metallic container wall, and it automatically

adapts to various thicknesses of plastic or glass

walls.

The universal mounting brackets allow the sensor

to be xed on various tubes or containers.

Strong, compact housing with IP69K ratings and

ECOLAB approval for wash-down applications.

The sensor will function out of the box in most

applications, and teach-in capabilities are available

for adapting the sensor to more challenging

applications.

Main features

• Compact housing

• Supply voltage: 10 to 30 VDC

• Output: 100 mA, NPN or PNP preset

• Make or break switching function

• LED indication for output and power ON

• Protection: reverse polarity, short circuit and transients

• Cable and pigtail M8 plug versions

• Excellent EMC performance

• IP65, IP66, IP67, IP68 and IP69K for hose-down

applications

• cULus

• Ecolab

Main functions

• Detection of water-based uids inside a container or tube

without direct contact with the uids.

• The sensor detects the liquids reliably while compensating

for residue lm, moisture or foam build-up from liquids

such as water, milk, body uids (blood), acid- or alkaline

solutions with conductivity as high as 50 mS/cm inside or

outside the container wall.

• Flexible and fast universal mounting bracket.

• The sensing principle detects only the level of the liquids

while ignoring foam, lm or build-up that would cause

standard capacitive sensors to detect faultily.

Summary of content (9 pages)

PAGE 1
CD34CNFLFxxx Capacitive sensor, Foreground Suppression Main features • • • • • • • • • Compact housing Supply voltage: 10 to 30 VDC Output: 100 mA, NPN or PNP preset Make or break switching function LED indication for output and power ON Protection: reverse polarity, short circuit and transients Cable and pigtail M8 plug versions Excellent EMC performance IP65, IP66, IP67, IP68 and IP69K for hose-down applications • cULus • Ecolab Description The CD34..
PAGE 2
CD34CNFLFxxx References Product selection key CD34CNFLF Enter the code option instead of Code C D 34 C N F L F Option N P O C P2 T5 Description Capacitive sensor Rectangular housing Length of housing Plastic housing Neutral Flush mounting Liquid level Foreground suppression NPN PNP N.O. N.C. 2 m PVC Cable Pigtail PVC Type selection Connection Output NPN, N.O. NPN, N.C. Cable PNP, N.O. PNP, N.C. NPN, N.O. NPN, N.C. Pigtail PNP, N.O. PNP, N.C.
PAGE 3
CD34CNFLFxxx Structure A B B A E E E D C C Fig. 1 Cable Element A B C D E Fig. 2 Pigtail Fig. 3 Sensing surface Component Function LED Green LED: Power ON LED Yellow LED: Output 2 M3 Fixing holes for sensor mounting Sensing surface Recessed area for cable strips, max. 5 mm wide Sensing Accuracy Temperature drift Detection Detection liquids 26/08/2019 CD34CNFLFxxx ENG Factory settings Manual teach Pipes diameter Out of the box: wall thickness ≤ 20% (-25°C... +80°C) ≤ 20% (-25°C...
PAGE 4
CD34CNFLFxxx Features Power Supply Rated operational voltage (UB) Ripple (Urpp) No load supply current (Io) Power-ON delay (tv) 10 ... 30 VDC (ripple included) ≤ 10% ≤ 13 mA < 300 ms Outputs Output functions Output switching function Rated operational current (Ie) OFF-state current(Ir) PNP and NPN Voltage drop (Ud) Protection NPN or PNP by sensor type N.O. and N.C by sensor type ≤ 100 mA 50 μA < 1 .
PAGE 5
CD34CNFLFxxx Indication Normal mode Green LED OFF ON ON Yellow LED OFF OFF ON Power OFF ON ON Output OFF OFF ON Output short circuit Green LED OFF Yellow LED Flashes 4Hz Output Yellow LED flashes minimum 1 sec. Teach by wire Out of the box (Factory settings): Typically, the sensor can be used without any additional calibration; it is designed to work with plastic tank walls of approximately 0,5 to 6 mm in thickness and glass walls of approximately 0,5 to 4 mm in thickness.
PAGE 6
CD34CNFLFxxx Green LED Flashes 1Hz Flashes 1Hz NA NA NA Yellow LED OFF ON Flashes 3 times 1Hz Flashes 3 times 1Hz Flashes 10 times 4Hz Output Full calibration (2-7 sec) Empty calibration (7-12 sec) Succesful "full calibration" Succesful "empty calibration" Unsuccesful calibration (cancelled or error) (>12 sec) Environmental Vibration Shock Drop test Rated insulation voltage (Ui) Dielectric insulation voltage Rated impulse withstand voltage -25°... +80°C (-13°... +176°F) -40° ... +85°C (-40° ...
PAGE 7
CD34CNFLFxxx Mechanics/electronics Connection Cable Pigtail 2 m, 4-wire 4 x 0.14 mm2, Ø = 3.4 mm, PVC 0.3 m, M8, 4-pin, male 4BK 3BU Fig. 4 PNP NO 1BN 2WH + ILOAD<100mA 4BK 3BU Fig. 6 PNP NC 2WH 3BU Fig. 5 NPN NO - - + 1BN 4BK ILOAD<100mA 2WH 3BU Fig.
PAGE 8
CD34CNFLFxxx Dimensions (mm) 8 3 16.3 34 1.1 16 10 3 6.6 3.6 3.2 10.5 73.85 52.85 10.5 Fig. 8 CD34 26 7.6 Fig.
PAGE 9
CD34CNFLFxxx Compatibility and conformity Approvals and markings General reference MTTFd Sensor designed according to EN60947-5-2 and EN60947-1 246 years @ 40°C (+104°F) EN ISO 13849-1, SN 29500 CE-marking Approvals (UL508 + C22.