Kobold URK series Manual de usuario

Operating instructions for

Variable area flow meter

Model URK

URK

page 2 URK K03/0817

1. Contents

1. Contents...................................................................................................................2

2. Note.........................................................................................................................3

3. Instrument inspection...............................................................................................3

4. Regulation use.........................................................................................................3

5. Operating principle...................................................................................................3

6. Mechanical connection............................................................................................4

7. Electrical connection................................................................................................4

7.1. Inductive switch (option) ................................................................................4

8. Operation.................................................................................................................4

9. Maintenance ............................................................................................................5

10. Technical information...............................................................................................5

11. Order codes .............................................................................................................6

12. Dimensions ..............................................................................................................7

13. EU Declaration of conformance...............................................................................8

Manufactured by: Sold by:

Kobold-Unirota Ltd. Kobold Messring GmbH

4400 Nyíregyháza Nordring 22-24

Derkovits út 132-136. D-65719 Hofheim

Tel.: +36-42-342-215 Tel.: +49(0)6192-2990

Fax: +36-42-500-175 Fax: +49(0)6192-23398

E-Mail: [email protected] E-Mail: [email protected]

Internet: www.unirota.hu Internet: www.kobold.com

URK

URK K03/0817 page 3

2. Note

Please read these operating instructions before unpacking and putting the unit into operation.

Follow the instructions precisely as described herein. The devices are only to be used,

maintained and serviced by persons familiar with these operating instructions and in accordance

with local regulations applying to Health & Safety and prevention of accidents.

When used in machines, the measuring unit should be used only when the machines fulfil the

EC-machine guidelines.

as per PED 2014/68/EU

In acc. with Article 4 Paragraph (3), "Sound Engineering Practice", of the PED 2014/68/EU no CE

mark.

pipeline

filled with

gas liquids

group 2 group 1 group 2

table 7 table 8 table 9

3. Instrument inspection

Instruments are inspected before shipping and sent out in perfect condition. Should damage to a

device be visible, we recommend a thorough inspection of the delivery packaging. In case of

damage, please inform your parcel service / forwarding agent immediately, since they are

responsible for damages during transit.

Scope of delivery:

The standard delivery includes:

• Variable area flow meter: URK

• Operating instructions

• Inductive switch (option)

4. Regulation use

Any use of the variable area flow meter, model: URK, which exceeds the manufacturers

specification, may invalidate its warranty. Therefore any resulting damage is not the

responsibility of the manufacturer. The user assumes all risk for such usage.

URK

page 4 URK K03/0817

5. Operating principle

The Kobold URK model flowmeter/monitor works on the basis of the suspended float principle. It

is used for measuring the flow rates in closed pipe line systems.

The medium flows from below through a glass measuring cone that gets wider on top. Thus, the

float is raised and indicates the respective flow rate on the scale provided on the measuring

cone. To monitor flow rate limits, the URK meters can be optionally furnished with “open

collector“ proximity switches.

By its special design, this model is particularly suitable for applications where only very

small operating pressures are available. Another advantage is offered by the very large

sight glass which optically allows direct flow observation.

6. Mechanical connection

Before Installation:

• Remove all transportation safety locks and ensure that no packing material remains within

the unit.

• Be sure that the maximum allowable operating pressure and temperature is not exceeded

(see Technical data).

• Install the by-pass level indicator at the side of the round containers, ensure the instrument

is under no mechanical stress/tension (install support bracing if necessary).

• Protect the measuring tube from external damage.

• Avoid pressure peaks in the measuring tube, e.g. from sudden surges or stoppage of flow.

• If possible, immediately after making mechanical connections, check whether the

connections are properly sealed with no evidence of leakage.

• Make sure that the connections are in plain.

7. Electrical connection

7.1. Inductive switch (option)

•Make sure that the supply wires are de-energized.

URK

URK K03/0817 page 5

8. Operation

In order to initialise the inductive switch function, it is essential that the float activates the contact

once in each direction.

Adjustment of limit-values

The switch-point can be adjusted to the desired levels by using.

Reference edge: approx. the middle of the sensor.

Slide the switch housing up or down until the reference edge coincides with the desired

switch-point scale reading.

Overranging

With non-pulsating flow, the maximum flow rate can be exceeded. Only an increase in pressure

loss will result (max. permissible operating pressure must not be exceeded!)

9. Maintenance

If the medium to be measured is clean, the series URL is virtually maintenance- free. If deposits

form on the inner housing or parts, periodic cleaning of the unit is recommended. Remove the

units from the piping with a suitable tool; clean the flow meter with a suitable cleaning agent or

make use of an ultrasonic bath.

10. Technical information

Installation position: vertical (flow from bottom to top)

Accuracy class: 4 according to VDI

Max. temperature: 100°C (65°C for PVC)

Max. pressure: 03H…23H; 16 bar (with PN 16 flange)

25H…33H; 12 bar (with PN 16 flange)

35H…41H; 8 bar (with PN 16 flange)

01L…23L; 16 bar (with PN 16 flange)

25L…33L; 10 bar (with PN 16 flange)

in all other cases 6 bar

Calibration conditions:

water: 20°C, air: 20°C,

air pressure: 1.013 bar abs.

Contact (optional): proximity switch: PNP

open collector, n/o contact

Supply voltage: 12…24 VDC

Current consumption: max. 10 mA

Cable: 2 m, PVC-insulated

Ambient temperature: -25…+70°C

Protective category: IP 67

URK

page 6 URK K03/0817

11. Order codes

Model

Material

combi-

nation

Measuring range Pressure

loss

[mbar]

Flange Contacts

water [L/h] air [m³N/h] DIN 2526.

Form C. PN 6 DIN 2526.

Form C. PN 16 ANSI

150 lbs

URK-

99**

01L = 0.02…0.2

F4 = DN 15

F5 = DN 20 B4 = DN 15 A4 =½"

A5 = ¾"

0 = no

contact

P* = 1 PNP

normally open

R* = 2 PNP

normally open

03H = 1…10

03L = 0.032…0.32

05H = 1.6…16

05L = 0.05…0.5

07H = 2.5…25

07L = 0.08…0.8

09H = 4.0…40

09L = 0.13…1.3

11H = 6.3…63

11L = 0.2…2.0

13H = 10…100

13L = 0.32…3.2

15H = 16…160

15L = 0.5…5

F6 = DN 25 B5 = DN 20

B6 = DN 25

A6 = 1"

A7 = 1 ¼"

17H = 25…250

17L = 0.8…8

19H = 40…400

19L = 1.3…13

21H = 63…630

21L = 2.0…20

23H = 100…1 000 23L = 3.2…32

25H = 160…1 600 25L = 5…50

F7 = DN 32

B7 = DN 32

A8 = 1 ½"

27H = 250…2 500 27L = 8…80

29H = 400…4 000 29L = 13…130

F8 = DN 40

B8 = DN 40

A9 = 2"

31H = 630…6 300 31L = 20…200

33H = 1 000…10 000

33L

***

= 25…250 70 F9 = DN 50

= DN 50

35H = 1 600…16 000

35L

***

= 32…320 93

FA = DN 65

= DN 65

AA =

2 ½"

AB = 3"

37H = 2 500…25 000

37L

***

= 40…400 102

39H = 10 000…40 000

39L

***

= 50…500 95

FB = DN 80

= DN 80

–

41H = 15 000…50 000

102

*Other switching functions on request

**Customer specification on request

*** 33L; 35L; 37L and 39L air ranges only available with aluminum or PTFE float

URK

URK K03/0817 page 7

12. Dimensions

Model H [mm]

DIN ANSI

PN6PN16

Size

Class 150 RF

[

]

[

]

[

]

[

]

[

]

[

]

URK-..4x 380 15 80 55 95 65 ½" 88.9 60.5

URK-..5x 390 20 90 65 105 75 ¾" 98.6 69.9

URK-..6x 390 25 100 75 115 85 1" 108.0 79.2

URK-..7x 400 32 120 90 140 100 1¼" 117.3 88.9

URK-..8x 410 40 130 100 150 110 1½" 127.0 98.6

URK-..9x 410 50 140 110 165 125 2" 152.0 120.7

URK-..Ax 550 65 160 130 185 145 2½" 177.8 139.7

URK-..Bx 560 80 190 150 200 160 3" 190.5 152.4

Material combination URK

Ordering

code Connection Float Seal Ring Housing Sight glass

Measuring

cone

73 cast iron 1.4301 NBR PVC

st.st.

1.4301 plexiglass borosilicate

glass

33 1.4301 1.4301 FPM PTFE

55 1.4404 1.4404 FPM PTFE

cast iron

1.4301

1.4404

1.4301

1.4404

aluminium

PTFE

PVC

NBR

EPDM

FPM

PTFE

PVC

PTFE

1.4301

** Customer specification on request

URK

page 8 URK K03/0817

13. Declaration of conformance

We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole

responsibility that the product:

Variable area flow meter Model: URK

to which this declaration relates is in conformity with the standards noted below:

EN 61000-6-2:2006 Immunity industrial environment

EN 61000-6-3:2011 Emission residential, commercial

EN 55011:2009+A1:2010 ISM ratio-frequency equipment

EN 61326-1:2013 Electrical equipment for measurement, control and

laboratory use – EMC requirements

EN 61010-1:2011 Safety requirements for electrical measuring, control and

laboratory devices

Also the following EC guidelines are fulfilled:

2014/30/EU EMC Directive

2011/65/EU RoHS (category 9)

EN 50581:2012 Technical documentation for the assessment of electrical and

electronic products with respect to the restriction of hazardous substances

Hofheim, 16. August 2017

H. Peters M. Wenzel

General Manager Proxy Holder

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