Kobold URM User manual

Operating instructions

for

Variable area flow meter

Model URM

URM

page 2 URM K04/0817

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

URM

URM K04/0817 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: URM

• Operating instructions

• Inductive switch (option)

4. Regulation use

Any use of the variable area flow meter, model: URM, 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.

URM

page 4 URM K04/0817

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

7. Electrical connection

7.1. Inductive switch (option)

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

• housing.

URM

URM K04/0817 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 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.

10. Technical information

Installation position: vertical

Accuracy class: 4 acc. to VDI

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

Max. pressure: 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: 12…24 VDC

current consumption: 10 mA max.

cable: 2 m, PVC-insulated

URM

page 6 URM K04/0817

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

URM K04/0817 page 7

11. Order codes

Model

Material

combi-

nation Instrument

length

Measuring range Pressure

loss

[mbar]

Thread connection

Contactswater [L/h] air [Nm³/h] female male

URM- 33

99**

210 mm

01H = 0.25…2.5 01L = 0.0032…0.032 6

I2 = G ¼

I3 = G 3⁄8 G3 = G 3⁄8

G4 = G ½

0 = no contact

03H = 0.4…4 03L = 0.008…0.08 6

05H = 0.63…6.3 05L = 0.02…0.2 8

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

I2 = G ¼

I3 = G 3⁄8 G3 = G 3⁄8

G4 = 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

I3 = G 3⁄8

I4 = G ½

G3 = G3⁄8

G4 = G ½

G5 = G ¾

0 = no contact

P*= 1 PNP

normally open

R*= 2 PNP

normally open

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 I4 = G ½

I5 = G ¾

G4 = G ½

G5 = G ¾

G6 = G 1

35H = 63…630 35L = 2.0…20 34

37H = 100…1

000 37L = 3.2…32 43

440 mm

43H = 100…1

000 43L = 3.2…32 43 I5 = G ¾

I6 = G 1

G5 = G¾

G6 = G 1

G7 = G 1

= G 1

45H = 160…1

600 45L = 5.0…50 48

47H = 250…2

500 47L = 8.0…80 51

440 mm

53H = 400…4

000 53L = 13…130 51 I6 = G 1

I7 = G 1

I8 = G 1

G6 = G 1

G7 = G 1

G8 = G 1

G9 = G 2

55H = 630…6

300 55L = 20…200 57

57H = 1

000…10

000 - 70

600 mm

63H = 1

600…16

000 63L

***

= 25…250 93

–

G8 = G 1

G9 = G 2

GA= G 2 ½

GB= G 3

65H = 2

500…25

000 65L*** = 32…320 102

*Other switching functions on request

**Customer specification on request

***63L and 65L air ranges only available with aluminum or PTFE float

URM

page 8 URM K04/0817

12. Dimensions

URM

URM K04/0817 page 9

13. EU Declaration of conformance

We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, 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 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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