Burkert 8081 User Manual [en, de, fr]

Type 8081

Water flow rate transmitter Wasser-Durchfluss-Transmitter Transmetteur de débit d’eau

Operating Instructions

Bedienungsanleitung Manuel utilisateur

We reserve the right to make technical changes without notice. Technische Änderungen vorbehalten. Sous réserve de modifications techniques.

Operating Instructions 1208/2_EU-ML_00560456

Contents:

Type 8081

Water flow rate transmitter type 8081

1. ABOUT THIS MANUAL .................................................................................5

1.1. Symbols used .......................................................................................5

2. INTENDED USE ................................................................................................6

3. BASIC SAFETY INFORMATION ...............................................................6

4. GENERAL INFORMATION ...........................................................................7

4.1. Manufacturer's address and international contacts .........7

4.2. Warranty conditions ...........................................................................7

4.3. Information on the Internet ............................................................7

5. DESCRIPTION ...................................................................................................8

5.1. Area of application .............................................................................8

5.2. General description ...........................................................................8

5.2.1. Design ...................................................................................... 8

5.2.2. Measuring item and principle .............................................8

5.3. Description of the name plate .....................................................9

5.4. Order codes ........................................................................................10

6. TECHNICAL DATA ........................................................................................11

6.1. Conditions of use ............................................................................. 11

6.2. Conformity to standards and directives...............................11

6.3. General technical data .................................................................. 12

6.3.1. Mechanical data ..................................................................12

6.3.2. General data .........................................................................13

6.3.3. Electrical characteristics ....................................................14

6.3.4. Electrical connections ........................................................14

7. INSTALLATION AND WIRING .................................................................15

7.1. Safety instructions...........................................................................15

7.2. Installation onto the pipe ............................................................. 15

7.3. Electrical wiring .................................................................................17

7.3.1. Assembly of the female cable plug (order code

438680) ................................................................................18

7.3.2. Wiring of the 5-pin M12 fixed connector ......................18

7.3.3. Connecting the pulse output ............................................19

7.3.4. Only connecting the current output ................................19

7.3.5. Connecting both the current and pulse outputs ..........20

8. COMMISSIONING ........................................................................................ 20

8.1. Safety instructions...........................................................................20

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9. ADJUSTMENT AND FUNCTIONS..........................................................................................................................................................................21

9.1. Safety instructions...........................................................................21

9.2. Adjustment of the 8081 ................................................................21

10. MAINTENANCE ...........................................................................................21

10.1. Safety instructions...........................................................................21

10.2. Cleaning ................................................................................................ 22

11. PACKAGING, TRANSPORT ...................................................................22

12. STORAGE ....................................................................................................... 22

13. DISPOSAL OF THE PRODUCT ........................................................... 23

Type 8081

Contents

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Type 8081

About this manual

1. ABOUT THIS MANUAL

This manual describes the entire life cycle of the device. Please keep this manual in a safe place, accessible to all users and any new owners.

This manual contains important safety information.

Failure to comply with these instructions can lead to hazardous situations.

• This manual must be read and understood.

1.1. Symbols used

DANGER

Warns against an imminent danger.

• Failure to observe this warning can result in death or in serious injury.

WARNING

Warns against a potentially dangerous situation.

• Failure to observe this warning can result in serious injury or even death.

CAUTION

Warns against a possible risk.

• Failure to observe this warning can result in substantial or minor injuries.

NOTICE

Warns against material damage.

• Failure to observe this warning can result in damage to the device or system.

indicates additional information, advice or important recommendations.

refers to information contained in this manual or in other documents.

→ indicates a procedure to be carried out.

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Type 8081

intended use

2. INTENDED USE

Use of the ultrasonic flow rate transmitter that does not comply with the instructions could present risks to people, nearby installations and the environment.

• The 8081 transmitter is intended solely for the measurement of the flow rate in water or neutral liquids.

• If possible, avoid placing this device near sources of electromagnetic interference

• This device must be protected against ultraviolet rays and, when installed outdoors, the effects of the climatic conditions.

• This device must be used in compliance with the characteristics and commissioning and use conditions specified in the contractual documents and in the user manual.

• The device can only be used together with devices and components recommended and/or approved by Bürkert.

• Requirements for safe and proper operation are proper transport, storage and installation as well as careful operation and maintenance

• Only use the device as intended.

→ Observe any existing restraints when the device is exported.

3. BASIC SAFETY INFORMATION

This safety information does not take into account:

• any contingencies or occurences that may arise during assembly, use and maintenance of the devices.

• the local safety regulations that the operator must ensure the staff in charge of assembly observe.

Danger due to high pressure. Danger due to high temperatures of the fluid. Danger due to electrical voltage.

Various dangerous situations

To avoid injury take care:

• to prevent any power supply switch on.

• to carry out the installation and maintenance work by qualified and skilled staff with the appropriate tools.

• to guarantee a set or controlled restarting of the process, after a power supply interruption.

• to use the device only if in perfect working order and in compliance with the instructions provided in the user manual

• to observe the general technical rules during the planning and use of the device.

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Type 8081

General information

4. GENERAL INFORMATION

Various dangerous situations

To avoid injury take care:

• not to use the type 8081 ultrasound flow rate transmitter in a potentially explosive atmosphere.

• not to use fluid that is incompatible with the materials of which the transmitter is made.

• not to subject the device to mechanical loads (e.g. by placing objects on top of it or by using it as a step).

• not to make any external modifications to the device. Do not paint or varnish any part of the device.

NOTICE

Elements / Components sensitive to electrostatic discharges

• This device contains electronic components sensitive to electrostatic discharges. They can get damaged if they are touched by an electrostatically charged person or object. In the worst case scenario, these components are instantly destroyed or go out of order as soon as they are activated.

• To minimise or even avoid all damage due to an electrostatic discharge, take all the precautions described in the EN 61340-5-1 and 5-2 norms.

• Also ensure that you do not touch any of the live electrical components.

4.1. Manufacturer's address and international contacts

To contact the manufacturer of the device use following address: Bürkert SAS Rue du Giessen BP 21 F-67220 TRIEMBACH-AU-VAL You may also contact your local Bürkert sales office. The addresses of our international sales offices can be found on the

last pages of this manual. They are also available on the Internet at:

www.burkert.com

4.2. Warranty conditions

The condition governing the legal warranty is the conforming use of the 8081 in observance of the operating conditions specified in this manual.

4.3. Information on the Internet

You can find the user manuals and technical data sheets regarding the type 8081 at: www.burkert.com

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Type 8081

Description

5. DESCRIPTION

5.1. Area of application

The ultrasonic flow rate transmitter type 8081 is intended for the measurement of water flow rates which may be slightly charged with contaminants.

5.2. General description

5.2.1. Design

The 8081 ultrasonic flow rate transmitter consists of an electronic module and a brass fitting with a built-in measuring tube. When combined with a controller and a control loop, it enables a control loop to be established.

The electrical connection is made via a 5-pin M12 fixed connector. The transmitter features, depending on the version:

• a pulse output or

• a pulse output and a 4-20 mA current output; Each version is available for 5 different flow rate ranges:

• model QN 0.6 DN15: 0.06 to 20 l/min (nominal flow rate 0.6 m

• model QN 1.5 DN15: 0.1 to 50 l/min (nominal flow rate 1.5 m

• model QN 2.5 DN20: 0.16 to 82 l/min (nominal flow rate 2.5 m

/h namely 10 l/min)

/h namely 25 l/min)

/h namely 41 l/min)

• model QN 3.5 DN25: 0.6 to 116 l/min (nominal flow rate 3.5 m

• model QN 6 DN25: 1 to 200 l/min (nominal flow rate 6 m

/h namely 58 l/min)

/h namely 100 l/min)

5.2.2. Measuring item and principle

The 8081 flow meter is based on the transit time method. This consists in measuring the transit times of the sound from emitter 1 to receiver 2 and from emitter 2 to receiver 1 and subsequently comparing both values. The calculated transist time difference is directly proportional to the flow speed of the fluid.

emitter-receiver emitter-receiver

ultrasonic wave 1

ultrasonic wave 2

The electronic module then delivers a pulse signal proportional to the volume or an industry-standard 4-20mA signal, proportional to

1 2

∆t

Direction of flow of the fluid

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Type 8081

3 4 2

Description

the flow rate or to the temperature.

5.3. Description of the name plate

1. Measured quantity, type of flow meter

2. Supply voltage

3. Measuring principle

4. Nominal flow rate

5. Output data

6. Process connection

7. Flow rate range

8. Manufacturing code

9. Serial number

10. Order code

11. Materials: housing, seal

FLOW8081 ULTRAS QN2.5 NPN/PNP : 0,7A - 36VDC 12-36 VDC 4-20mA G1 MSEPDMFKM

S/N 1000

Made in France

00559869

0,16-82L/MIN

W41LP

9 11 710

5 6

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5.4. Order codes

Type 8081

Description

0,6 15

1,5 15

0.06 to 20 l/min

0,1 to 50 l/min

Flow rate range

Connection

G 3/4'' external thread

NPT 3/4'' external thread

G 3/4'' external thread

NPT 3/4'' external thread

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Outputs

Pulse, NPN 560131

Pulse, PNP + 4-20 mA, sourcing mode

Pulse, NPN 560612

Pulse, PNP + 4-20 mA, sourcing

Pulse, NPN 559865

Pulse, PNP + 4-20 mA, sourcing mode

Pulse, NPN 560613

Pulse, PNP + 4-20 mA, sourcing mode

Ordering codes

560113

560617

559868

560618

2,5 20

3,5 25

0,16 to 82 l/min

0,6 to 116 l/min

Flow rate range

G 1'' external thread

NPT 1'' external thread

G 1 1/4'' external thread

NPT 1 1/4'' external thread

Connection

Pulse, NPN 559866

Pulse, PNP + 4-20 mA, sourcing mode

Pulse, NPN 560614

Pulse, PNP + 4-20 mA, sourcing mode

Pulse, NPN 559867

Pulse, PNP + 4-20 mA, sourcing mode

Pulse, NPN 560615

Pulse, PNP + 4-20 mA, sourcing mode

Outputs

Ordering codes

559869

560619

559870

560620

6 25

1 to 200 l/min

Flow rate range

Type 8081

Technical data

Connection

G 1 1/4'' external thread

NPT 1 1/4'' external thread

Outputs

Pulse, NPN 560132

Pulse, PNP + 4-20 mA, sourcing mode

Pulse, NPN 560616

Pulse, PNP + 4-20 mA, sourcing mode

Ordering codes

560114

560621

6. TECHNICAL DATA

6.1. Conditions of use

Ambient temperature: +5 to +55 °C

Storage temperature: +5 to +55 °C

Air humidity: < 80%, not condensated

Protection rating: IP65 with cable plug plugged-in and tightened

6.2. Conformity to standards and

directives

EMC: EN61000-6-3, 61000-6-2

Vibration: EN 60068-2-6

Shock: EN 60068-2-27

Pressure: complying with article 3 of §3 from 97/23/CE directive For the 97/23/CE pressure directive, the device can only be used in the following cases (depending on max. pressure, pipe diameter and fluid)

Type of fluid Conditions

Fluid group 1, §1.3.a Forbidden Fluid group 2, §1.3.a Fluid group 1, §1.3.b Forbidden Fluid group 2, §1.3.b Allowed

Allowed (PN*DN

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≤ 1000)

Type 8081

Technical data

6.3. General technical data

6.3.1. Mechanical data

Item Material

Housing, cover PPS

Seal in contact with the environment

M12 connector

Fitting

Measuring tube PES

Seal in contact with the fluid

Silicone

Brass

EPDM, FKM

Dimensions [mm]

DN A B H h L1 L2 L3 L4 L5

15 G or NPT 3/4'' 65.5 76.5 14.5 110 90 58 6.5 19.5 20 G or NPT 1'' 65.5 79 18 130 90 58 6.5 19.5 25 G or NPT 1 1/4'' 65.5 83.5 23 260 90 58 6.5 19.5

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Type 8081

Technical data

6.3.2. General data

Pipe diameter DN15 to DN25

Type of fluid water (or neutral liquids on request)

Fluid temperature 5 to 90°C

Fluid pressure PN 16

Measuring range 0.06 to 200 l/min

Accuracy (see curves on next page)

Repeatability 1% of measured value

Measuring element 2 ultrasound emitter-receiver cells

* Full Scale, see measuring range on the diagram of measurement accuracy.

Reference conditions: fluid = water, water and ambient temperatures = 20°C

± (0.01 % of Full Scale* + 2% of measured value)

Measurement accuracy

Max. measurement deviation in %

8 6 4 2 0

-2

-4

-6

-8

-10 0,1 1 10 100 1000

max DN15 max DN20

max DN25

Flow rate in l/min

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Type 8081

Technical data

6.3.3. Electrical characteristics

Supply voltage (V+) 12-36 VDC

Current consumption • Own consumption: < 4 mA

• Consumption with load: < 1A Pulse output (transistor)

• version without

current output

• NPN as default setting; (PNP on

request), open collector, 5 mA min., 700 mA max., NPN output: 0,2-36 VDC

• version with cur-

rent output

• PNP as default setting; (on request:

NPN for the pulse output and sinking mode for the current output), open collector, 5 mA min., 700 mA max., PNP output: supply voltage (V+)

If QN=0.6 or 1.5: 1 pulse corresponds to a volume V = 0.002 l (K factor = 500 pulse/litre) If QN=2.5 or 3.5: 1 pulse corresponds to a volume V = 0.005 l (K factor = 200 pulse/litre) If QN=6: 1 pulse corresponds to a volume V = 0.01 l (K factor = 100 pulse/litre)

Current output 4-20 mA (sourcing mode as default set-

ting; on request: sinking mode for the current output and NPN for the pulse output) corresponding to the flow rate range of the selected model (default setting) or to a temperature range (on request) max. loop resistance : 1100 W at 36 V DC 610 W at 24 V DC 100 W at 12 V DC

Protection against: reversed polarity voltage peaks short-circuits

Recommended cable type

yes yes yes, for the pulse output

max. cross section of 1.5 mm

6.3.4. Electrical connections

Flow rate meter version

Any version female 5-pin M12 cable plug (available as an

Type of cable plug

accessory; Order code 438680)

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Type 8081

Installation and wiring

7. INSTALLATION AND WIRING

7.1. Safety instructions

DANGER

Risk of injury due to high pressure

• Cut off the pressure and depressurize the pipes before loosening

the pipes and connections.

Risk of injury due electrical discharge.

• Before starting work, make sure that you switch off the supply

voltage and secure it to prevent restarting.

• Observe all applicable accident protection and safety guidelines

for electrical equipment.

WARNING

Risk of injury due to non-conforming installation.

• The electrical and fluid installation can only be carried out by quali-

fied and skilled staff with the appropriate tools

• Install appropriate safety devices (correctly rated fuse and/or

circuit-breaker).

• Use cables with an operating temperature limit which is suitable

for your application.

• Under normal conditions of use, cables with a 0.75 mm

section should be enough to transmit the signal.

cross

WARNING

Risk of injury due to unintentional switch on of power supply or uncontrolled restarting of the installation.

• Take appropriate measures to avoid any involuntary activation of the installation.

• Guarantee a set or controlled restarting of the process subsequent to the assembly of the device.

NOTICE

When the cover is removed, the transmitter may be damaged through any element touching the electronics, and the tightness of the transmitter is no longer ensured.

• Do not dismantle the device

7.2. Installation onto the pipe

DANGER

Risk of injury due to high pressure in the installation.

• Cut off the pressure and depressurize the pipes before loosening the pipes and connections.

The 8081 ultrasonic flow rate transmitter can be fitted onto a horizontal or vertical pipe.

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Type 8081

Installation and wiring

When horizontally

Correct

Incorrect

mounted, the max. fluid temperature is 90°C. But the max. fluid temperature must be reduced to 80°C when the electronics (black enclosure) is turned upwards. When vertically mounted the max. fluid temperature is also 80°C.

→ Please be careful to respect the correct direction of fluid

flow in the pipe. It is indicated with an arrow, marked on the underside of the fitting.

It is advisable to avoid placing the 8081 transmitter near any source of electromagnetic interference (switch, electric motor, fluorescent lamp, ...).

Minimum upstream and downstream distances are not necessary. The 8081 works correctly when the pipe is full and free of any air bubbles near the transmitter. In presence of bubbles in the pipe, the left installation no.1 should be avoided.

1 2 3 4

If the absence of any air bubbles cannot be guaranteed, the device should then be fitted on an horizontal pipe, with the electronic enclosure facing down. Thus the bubbles will not interfere with the circulation of ultrasonic waves.

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Type 8081

Installation and wiring

NOTICE

When mounting the device on the pipe, the M12 fixed connector may be damaged.

If the M12 fixed connector is damaged the device cannot be used anymore.

• Please be careful not to damage the M12 fixed connector when mounting the device on the pipe.

7.3. Electrical wiring

DANGER

Risk of injury due to electrical discharge

• Before starting work, make sure that you switch off the supply voltage and secure it to prevent restarting.

• Do not install the cable near high voltage or high frequency cables.

• If this is unavoidable, keep to a minimum clearance of 30 cm.

• Observe all applicable accident protection and safety guidelines for electrical equipment

• The power supply must be filtered and regulated.

→ Make sure the installation is earthed equipotentially

(power supply - 8081).

→ Connect the different earth connections of the installation to

one another in order to remove any differences in potential which may arise between the two earth connections.

→ Connect the cable shielding to the earth. Connect the nega-

tive terminal of the power supply to the earth to remove the effects of the common mode currents. If this connection cannot be made directly, a 100 nF/50 V capacitor can be fitted between the negative terminal of the power supply and the earth.

(*) If a direct earthing connection is not possible, fit a 100 nF/50 V capacitor between the negative terminal of the power supply and the earth.

(**)

12-36VDC

(*)

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(**) If your cable is shielded.

Type 8081

0 VDC

V+

(12-30 VDC)

0 VDC

V+

(12-30 VDC)

Installation and wiring

7.3.1. Assembly of the female cable plug (order code 438680)

1 2

3 4 5

→ Fully unscrew terminal

block [1]

→ Remove body [2]. → Unscrew clamping nut [5]. → Pass cables through

clamping nut [5], then through clamp ring [4] and gasket [3], and finally through body [2].

→ Wire terminal block [1]

(acc. to 8.3.2, 8.3.3, 8.3.4 or 8.3.5)

→ Screw terminal block [1]

onto body [2].

→ Insert gasket [3] and clamp

ring [4] into body [2].

→ Screw clamping nut [5].

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7.3.2. Wiring of the 5-pin M12 fixed connector

Not connected

(*)

Pulse output (NPN default setting)

(*) Functional earth connection

Wiring a version with pulse

output

Pin of M12 cable plug with a 2-m cable available as accessory (order code 438680)

1 brown 2 white 3 blue 4 black 5

4-20 mA

(*)

Pulse output (PNP default setting)

Wiring a version with pulse and

current outputs

Colour of wire

grey

Type 8081

Installation and wiring

7.3.3. Connecting the pulse output

The pulse output is connected in NPN mode (default setting on a version without current output) or in PNP mode (default setting on a version with current output).

Load

white

blue

NPN connection

brown

grey

+ -

12-36 VDC

Load

white

blue

PNP connection

brown

grey

12-36 VDC

+ -

7.3.4. Only connecting the current output

The current output, where present, is connected in source mode (default setting) or in sink mode (on request).

4-20 mA

input

+ -

brown

black

grey

blue

+ -

Supply

12-36 VDC

Source mode connection

(default setting)

(*) If a direct earthing connection is not possible, fit a 100 nF/50 V capacitor between the negative terminal of the power supply and the earth.

(*)

4-20 mA

input

+ -

brown

black

grey

blue

Sink mode connection

(on request)

+ -

Supply

12-36 VDC

(*)

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Type 8081

Commissioning

7.3.5. Connecting both the current and pulse outputs

Load

white

brown

blue

black

+ -

4-20 mA

input

12-36 VDC

grey

(*)

+ -

Supply

PNP/sourcing mode connection

(default setting)

(*) If a direct earthing connection is not possible, fit a 100 nF/50 V capacitor between the negative terminal of the power supply and the earth.

Load

white

brown

blue

black

+ -

4-20 mA

input

12-36 VDC

grey

+ -

(*)

Supply

NPN/sinking mode connection

(on request)

8. COMMISSIONING

8.1. Safety instructions

WARNING

Danger due to non-conforming commissioning.

Non-conforming commissioning could lead to injuries and damage the device and its surroundings.

• Before commissioning, make sure that the staff in charge have read and fully understood the contents of the manual.

• In particular, observe the safety recommendations and standard operating practices.

• The device/installation must only be commissioned by suitably trained staff.

• Protect the device against electromagnetic interference, ultraviolet rays and, when installed outdoors, the effects of the climatic conditions.

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Type 8081

Adjustment and functions

9. ADJUSTMENT AND FUNCTIONS

9.1. Safety instructions

WARNING

Risk of injury due to non-conforming adjustment.

• The operators in charge of adjustment must have read and understood the contents of this manual.

• In particular, observe the safety recommendations and standard operating practices.

• The device/installation must only be adjusted by suitably trained staff.

9.2. Adjustment of the 8081

• Pulse output: The pulse output delivers a frequency in proportion to a volume.

A pulse is generated each time a set volume passes, i.e. either V = 0.002 litre (for a model with QN = 0.6 or 1.5) or V = 0.005 litre (for a model with QN = 2.5 or 3.5) or V = 0.01 litre (for a model with QN = 6).

• Current output: The current output, where present, is pre-programmed on the cur-

rent range corresponding to the flow rate range (QN0.6, QN1.5, QN2.5, QN 3.5 or QN6) of the selected 8081 model.

10. MAINTENANCE

10.1. Safety instructions

DANGER

Risk of injury due to high pressure in the installation.

• Cut off the pressure and depressurize the pipes before loosening the pipes and connections.

Risk of injury due to electrical discharge.

• Before starting work, be sure to switch off the supply voltage and secure it to prevent restarting.

• Observe the applicable accident prevention and safety regulations for electrical equipment.

WARNING

Danger due to non-conforming maintenance.

• Maintenance must only be carried out by qualified and skilled staff with the appropriate tools.

• Following maintenance, ensure a controlled restart.

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