Kobold PUM Manual de usuario

Operating Instructions

for

U-pipe Pressure Gauges

Model: PUM

PUM

page 2 PUM K01/0522

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.Operation ...................................................................................................... 4

8.Maintenance ................................................................................................. 4

9.Technical Information .................................................................................... 5

10.Order Codes ................................................................................................. 6

11.Dimensions [mm] .......................................................................................... 7

12.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

PUM

PUM K01/0522 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:

 U-pipe pressure gauges model: PUM

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.

PUM

page 4 PUM K01/0522

5. Operating Principle

The Kobold U-pipe pressure gauge model: PUM works on the basis of the

hydrostatic principle. It is used for measuring differential pressure in low range

(max. 150 mbar).

The “U” tube differential manometer model: PUM has to be filled up with distilled

water up to close the “0” point in the middle of the glass tube. After it the connected

pressure will increase the level of the water in the one side of the manometer. The

level of the water will be decrease in the other side of the tube. The differential

pressure is equal to the distance of the two levels of water in the “U” tube in water

column millimeter. The distance between the two level can be read easily by the

scale on the housing.

6. Mechanical Connection

Before Installation:

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

remains within the unit.

• Install the unit to a stable place and fix it against moving and upset.

• Fill the measuring tube up with distilled water up to close the “0” point in the

middle of the glass tube.

• Install the “U” tube differential manometer in the piping system with flexible pipe,

ensure the instrument is under no mechanical stress/tension.

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

exceeded (see Technical information).

• Protect the measuring tube from external damage.

7. Operation

Connect the pressure to the one side of the unit carefully. The result can be read

on the scale in water column millimeter.

8. Maintenance

After the measuring the ends of the unit have to be closed to avoid the evaporation

of the distilled water from the measuring tube. We recommend the frequent

cleaning if you can see any crust or dirt inside the glass tube.

PUM

PUM K01/0522 page 5

9. Technical Information

Measuring range: -250 ... +250 mm WC (min.)

-1500 ... +1500 mm WC (max.)

Scale graduation: ± 2 mm

Read accuracy: ± 2 water column in mm (± 0.2 mbar)

Connection dimension: Ø 7 hose coupling

Installation dimensions:

Height: Nominal measuring range +70 mm

Width: 60 mm

Depth 30 mm

Distance between the

measuring tube’s branches: 30 mm

Weight: approx. 1.1 - 2.2 kg (depending on length)

Materials

Measuring tube: borosilicate glass tube

Frame: aluminium alloy

Holding elements: polystyrene

PUM

page 6 PUM K01/0522

10. Order Codes

Model L [mm] Range

PUM-025 250 -250…+250 mm of water column

PUM-050 500 -500…+500 mm of water column

PUM-075 750 -750…+750 mm of water column

PUM-100 1000 -1000…+1000 mm of water column

PUM-125 1250 -1200…+1250 mm of water column

PUM-150 1500 -1500…+1500 mm of water column

PUM

PUM K01/0522 page 7

11. Dimensions [mm]

PUM

page 8 PUM K01/0522

12. EU Declaration of Conformance

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

responsibility that the product:

U-pipe Pressure Gauges Model: PUM-…

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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