Kobold URM Manuel utilisateur

Operating Instructions

for

Variable area flow meter

Model: URM

URM

page 2 URM K05/0522

1. Contents

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

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

3.Instrument Inspection .................................................................................... 3

4.Regulation Use ............................................................................................. 3

5.Operating Principle ........................................................................................ 4

6.Mechanical Connection ................................................................................. 4

7.Electrical Connection .................................................................................... 5

7.1Inductive switch (option) ...................................................................... 5

8.Operation ...................................................................................................... 5

9.Maintenance ................................................................................................. 6

10.Technical Information .................................................................................... 7

11.Order Codes ................................................................................................. 8

12.Dimensions ................................................................................................... 9

13.EU Declaration of Conformance ................................................................. 10

14.EU Declaration of Conformance (contact) ................................................... 11

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

URM

URM K05/0522 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 instruction manuals on our website www.kobold.com are always for currently

manufactured version of our products. Due to technical changes, the instruction

manuals available online may not always correspond to the product version you

have purchased. If you need an instruction manual that corresponds to the

purchased product version, you can request it from us free of charge by email

([email protected]) in PDF format, specifying the relevant invoice number and

serial number. If you wish, the operating instructions can also be sent to you by

post in paper form against an applicable postage fee.

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.

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 model: URM

4. Regulation Use

Any use of the device, which exceeds the manufacturer’s specification, may

invalidate its warranty. Therefore, any resulting damage is not the responsibility of

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

URM

page 4 URM K05/0522

5. Operating Principle

The Kobold URM 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 URM 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 flow meter in the piping system, 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

URM

URM K05/0522 page 5

7. Electrical Connection

7.1 Inductive switch (option)

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

• housing.

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!)

URM

page 6 URM K05/0522

9. Maintenance

If the medium to be measured is clean, the series URM 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.

URM

URM K05/0522 page 7

10. Technical Information

Installation position: vertical

Accuracy class: 4 acc. to VDI

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

Max. pressure: 01H (L)…37H (L) 16 bar

43H…57H 12 bar

43L…55L 10 bar

63H…65H 8 bar

63L…65L 6 bar

Calibration conditions: water: 20°C, air: 20°C,

air pressure: 1.013 bar abs.

Ambient temperature: -25…+70°C

Protective category: IP 67

Contact (optional): proximity switch: PNP

open collector, n/o contact

supply voltage: 10…30 VDC

current consumption: ≤ 200 mA

cable: 2 m, PVC-insulated

switching state: LED, yellow

Material combinations

Ordering

code Connection Float Seal Ring

Measuring

cone Housing

33 1.4301 1.4301 NBR PVC

borosilicate

glass st.st. 1.4301

55 1.4404 1.4404 FPM PTFE

99** 1.4301

1.4404

1.4301

1.4404

aluminium

PTFE

PVC

NBR

EPDM

FPM

PTFE

PVC

PTFE

1.4301

** Customer specification on request

URM

page 8 URM K05/0522

11. Order Codes

Model

Material

combi-

nation

Instru-

ment

length

Measuring range

Pressure

loss

[mbar]

Thread connection

Contacts

water [l/h]

air [Nm

/h]

female

male

URM-

992)

210 mm

01H = 0.25…2.5 01L = 0.0032…0.032

= G ¼

= G 3⁄8

= G ¼

= G 3⁄8

= no

contact

03H = 0.4…4 03L = 0.008…0.08

05H = 0.63…6.3 05L = 0.02…0.2

07H = 1…10 07L = 0.032…0.32 10

09H = 1.6…16 09L = 0.05…0.5 10

360 mm

11L = 0.02…0.2 10

= G ¼

= G 3⁄8

= G ¼

= G 3⁄8

= G ½

13H = 1…10 13L = 0.032…0.32 10

15H = 1.6…16 15L = 0.05…0.5 10

17H = 2.5…25 17L = 0.08…0.8 12

19H = 4.0…40 19L = 0.13…1.3 12

360 mm

22H = 6.3…63 22L = 0.2…2.0 17

= G 3⁄8

= G ½

= G 3⁄8

= G ½

= G ¾

00 = none

1A = 1x N/O,

PNP

2A = 2x N/O,

PNP

24H = 10…100 24L = 0.32…3.2 24

26H = 16…160 26L = 0.5…5.0 28

28H = 25…250 28L = 0.8…8.0 25

360 mm

33H = 40…400 33L = 1.3…13 36

= G ½

= G ¾

= G ½

= G ¾

= G 1 00 = none

1B = 1x N/O,

PNP

2B = 2x N/O,

PNP

35H = 63…630 35L = 2.0…20 34

37H = 100…1000 37L = 3.2…32 43

440 mm

43H = 100…1000 43L = 3.2…32 43 I5

= G ¾

= G 1

= G 1 ¼

= G ¾

= G 1

= G 1 ¼

= G 1 ½

45H = 160…1600 45L = 5.0…50 48

47H = 250…2500 47L = 8.0…80 51

440 mm

3H = 400…4000 53L = 13…130 51 I6

= G 1

= G 1 ¼

= G 1 ½

= G 2

= G 1

= G 1 ¼

= G 1 ½

= G 2 00 = none

1C = 1x N/O,

PNP

2C = 2x N/O,

PNP

55H = 630…6300 55L = 20…200 57

57H = 1000…10 000 70

600 mm

63H = 1600…16 000 63L = 32…320 93 I8 = G 1 ½

I9 = G 2

IA = G 2 ½

IB = G 3

G8 = G 1 ½

G9 = G 2

GA = G 2 ½

GB = G 3

65H = 2500…25 000 102

on YYY = others on request

request

*Other switching functions on request

**Customer specification on request

URM

URM K05/0522 page 9

12. Dimensions

URM with female/male thread (F = female / M = male)

Model

[mm]

¼"

⁄

½"

¾"

1 ¼"

1 ½"

2 ½"

URM-xx 0... 210 29,5 F/M F/M

URM-xx 1...

360

F/M F/M

-/M

URM-xx 2... 40,0

F/M F/M

-/M

URM-xx 3... 49,5

F/M F/M

-/M

URM-xx 4... 440 62,0

F/M F/M F/M

-/M

URM-xx 5... 82,0

F/M F/M F/M F/M

URM-xx 6... 600 122,0

F/M F/M F/M F/M

Connection

Centering ring

Protection tube

Measuring tube

Seals

Float

ØA

URM

page 10 URM K05/0522

13. EU Declaration of Conformance

We, KOBOLD Unirota Kft. Nyíregyháza Hungary, declare under our sole

responsibility that the product:

Variable area flow meter Model: URM-…

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

EN IEC 63000:2018 Technical documentation for the assessment of electrical

and electronic products with respect to the restriction of hazardous substances

Also, the following EC guidelines are fulfilled:

2011/65/EU RoHS (category 9)

2015/863/EU Delegated Directive (RoHS III)

Nyíregyháza, 10 May 2022

Dénes Szabó

General Manager

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