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For initial set up, we strongly recommend the use of the relevant manuals in addition!

     System Configuration

2

100...230VAC (-15% / +10%), 22VA

Diameter range and rail versions

24VDC (-55% / +30%), 12W

Small

DN15...100 / 0.5...4"

DN200...1250 / 8...50"

    Small

    Medium

DN50...400 / 2...16"

DN200...4000 / 8...160"

1

Sensor cable connections

2

I/O connections

3

Mains supply connection

12/2020 - 4008317001 - OPTISONIC 6300 F/…Ex R01  en

1

2

 The instructions provided with the product shall be followed in detail to assure safe operation

  General

 All connection cables are fixed and installed correctly so adequate protection against possible damage is 

guaranteed

Maximum ambient and process temperatures 
are depending on version (e.g liner material , DN 
size), temperature and protection class and 
maximum surface temperature of sensor.

Quick Start

Quick Start

Special conditions to be observed

24VAC/DC (AC: -15% / +10%; DC: -25% / +30%), 
22VA or 12W

All work on the electrical connections may only be carried out with the power disconnected. Take note of the 
voltage data on the nameplate! Observe the national regulations for electrical installations!

Device nameplate

Large

2  3

1

Preferred measuring modes

The responsibility as to the suitability, intended use and corrosion resistance of the used materials against
the measured fluid of this device rests solely with the operator.

Tp = -40…+200°C / -40…+392°F 

Ex 

 Type Examination Certificate: KIWA 17ATEX 0034 X / KIWA 18ATEX0007 X

OPTISONIC 6300 F/…Ex

1  Electrical connection

 Only for connection to a separately certified UFC 300 F/…Ex flow converter

Installation, assembly, start-up and maintenance may only be performed by appropriately trained personnel. 
Check the nameplate for correct operating conditions.

Medium

    Electrical connections signal converter

3

    General

Ultrasonic clamp-on flowmeter

Ta = -40…+70°C / -40…+158°F 

 For ambient and process temperatures, specific product and electrical data, see Ex manual or certificate

2

Refer to the manual for connection of Ex (/i ) acc. to 
NAMUR

Power supply - grounding

Observe without fail the local occupational health and safety regulations. Any work done on the electrical 
components of the measuring device may only be carried out by properly trained specialists.

1

Check the device nameplate to ensure that the device is 
delivered according to your order.

The device must be grounded in accordance with 
regulations in order to protect personnel against electric 
shocks.

For devices used in hazardous areas, additional safety 
notes apply; please refer to the Ex documentation.

3

For use in hazardous areas, special codes and regulations are applicable. Instruments must not be 
connected to power supply before reading instructions described in the supplementary manual.

For complete documentation (manuals, supplementary manuals, data sheets and certificates) please refer 
to:

 www.krohne.com/Downloads

 For dimensions and details of the flameproof joints, the manufacturer shall be contacted

 The tensile strength of the special fasteners is at least 700 N/mm² (property class A2-70 / A4-70)

 The protection class of the signal converter enclosure is according EN 60529: IP65…68

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