Kobold SZM Manual de usuario

Operating Instructions

for

By-pass level indicator

Model: SZM

SZM

page 2 SZM K06/0323

1. Contents

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

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

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

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

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

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

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

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

8.Operation ...................................................................................................... 6

9.Commissioning.............................................................................................. 6

10.Maintenance ................................................................................................. 7

11.Technical Information .................................................................................... 7

12.Order Codes ................................................................................................. 7

13.Dimensions ................................................................................................... 7

14.Disposal ........................................................................................................ 8

15.EU Declaration of Conformance ................................................................... 9

16.EU Declaration of Conformance (contact) ................................................... 10

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

SZM

SZM K06/0323 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.

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

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.

Diagram 6, Pipe, Group 1 dangerous fluids

Diagram 7, Pipe, Group 2 no dangerous fluids

Diagram 8, Pipe, Group 1 dangerous fluids

Diagram 9, Pipe, Group 2 no dangerous fluids

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:

 By-pass level indicator model: SZM

 Capacitive switch (option)

SZM

page 4 SZM K06/0323

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.

5. Operating Principle

The Kobold Unirota SZM model by-pass level indicator works on the basis of the

intercommunicating vessels principle. The SZM type glass tube level indicator is

applicable for the indication of liquid level in small and middle-sized, standing or lying round

containers used in food, pharmaceutical and chemical industries. The level of the liquid in

the glass tube of the appliance is the same with the level in the round containers. The level

of the liquid can be seen through the sight glass.

The loads occurring at the installation is absorbed by the fixing device, thus the

glass tube is protected against breaking. The fixing device also protects the

glass tube against the mechanical impacts that may occur following the

installation. We recommend that the normal design level indicators be fitted on

vessels containing pure liquids, while the indicators mounted with cleaning stubs

(a low, or low-top stub) be fitted on containers filled with contaminated liquid.

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.

SZM

SZM K06/0323 page 5

7. Electrical Connection

7.1 Capacitive switch (option)

Caution! Make sure that the voltage values of your system

correspond with the voltage values of the measuring unit.

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

 Plug in the system according to the connecting diagrams.

7.1.1 We recommend the use of wires with cross sectional area of min.

0.25 mm²

Attention! Incorrect wiring will lead to damage of the unit’s

electronics.

7.1.1.1 Wiring diagram

pnp BK

load

SZM

page 6 SZM K06/0323

8. Operation

Capacitive proximity switches are designed for non-contact and wear-free

detection of metal (electrically conductive) and nonmetal (electrically non-

conductive) objects.

Note: Customer cannot retrofit the contacts himself. If retrofitting of contacts is

desired, the SZM should be ordered with a remark “prepared for retrofitting of

limit contact”.

Installing of the capacitive switch

•

Slide the switch housing up until the glass tube is empty under the switch.

•

Set the switching state LED off by adjusting the potentiometer located the end of

the switch.

•

Slide the switch housing down until the glass tube is full under the switch.

•

The LED must be on. If not, repeat the process from the first step util the LED

on.

Adjustment of limit-values

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

screw on the holder of switch.

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.

9. Commissioning

Because of the setting behaviour of seals, all screw connections must be

retightened.

If vent and drain valves have been installed, close them before filling.

Fill vessel and switch on electrical controller, if available. If there are gate valves

between bypass process connection and tank, first slowly open the upper valve

(pressure equalisation) and then the lower valve (liquid side).

Now the liquid in the bypass pipe will rise until the level between the tank and the

bypass pipe is equalised. The value of the liquid level can be read on a scale (if

any) on the bypass tube.

SZM

SZM K06/0323 page 7

10. Maintenance

If the medium to be measured is clean, the series SZM is virtually maintenance-

free.

If deposits form is on the inner housing or parts, periodic cleaning of the unit is

recommended.

At case of SZM-x1…, SZM-x2…, SZM-x3…, SZM-x5…, SZM-x8 (with cleaning

hole):

 Drain the residual medium down from your appliance using the drain valve

(SZM-x5…), the cup of cleaning hole (SZM-x2…, SZM-x3…) or outlet screw

(SZM-x1…).

 If your appliance has shut-off valves, turn them off.

 Remove the units from the container with a suitable tool.

 Screw the cleaning hole out. It can be located at the bottom (SZM-x2…,

SZM-x3…) or top (SZM-x1…, SZM-x3…, SZM-x5…).

 Clean the by-pass level indicator with a suitable cleaning.

 Do the reassembly in reverse order.

11. Technical Information

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

12. Order Codes

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

13. Dimensions

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

SZM

page 8 SZM K06/0323

14. Disposal

Note!

 Avoid environmental damage caused by media-contaminated parts

 Dispose of the device and packaging in an environmentally friendly manner

 Comply with applicable national and international disposal regulations and

environmental regulations.

Batteries

Batteries containing pollutants are marked with a sign consisting of a crossed-out

garbage can and the chemical symbol (Cd, Hg, Li or Pb) of the heavy metal that

is decisive for the classification as containing pollutants:

Cd1 Hg2 Pb3 Li

1. „Cd" stands for cadmium

2. „Hg" stands for mercury

3. „Pb" stands for lead

4. „Li" stands for lithium

Electrical and electronic equipment

SZM

SZM K06/0323 page 9

15. EU Declaration of Conformance

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

responsibility that the product:

By-pass level indicator Model: SZM-…

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

SZM

page 10 SZM K06/0323

16. EU Declaration of Conformance (contact)

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