Kobold SZM Manual de usuario

Operating Instructions

for

By-pass level indicator

Model: SZM

SZM

page 2 SZM K04/0522

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

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

9.Maintenance ................................................................................................. 7

10.Technical Information .................................................................................... 8

11.Order Codes ................................................................................................. 9

12.Dimensions ................................................................................................. 10

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

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

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 K04/0522 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:

 By-pass level indicator model: SZM

 Capacitive switch (option)

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.

SZM

page 4 SZM K04/0522

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 K04/0522 page 5

7. Electrical Connection

7.1 Capacitive switch (option)

Wiring diagram

pnp BK

SZM

page 6 SZM K04/0522

8. Operation

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

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

conductive) objects.

Type: capacitive sensor

Operating voltage: 10 ... 65 VDC

Short-circuit protection: yes

Voltage drop: ≤1.8 V

Operating current: ≤200 mA

No-load current: ≤15 mA

Output function: 3-wire, N/O-contact, PNP

Connection type: 2 m PVC cable

Core cross section: 3 x 0.34 mm²

Fine adjustment: via potentiometer

Switching indication: LED, yellow

Protection: IP 67

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.

load

SZM

SZM K04/0522 page 7

9. 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.

SZM

page 8 SZM K04/0522

10. Technical Information

Installation position: vertical

Measuring length: 370 ... 3 080 mm

Material: stainless steel

Gasket: FPM (standard)

EPDM, NBR on request

Process connection: DIN flange DN 15 ... 50, ANSI flange ½" ... 2" or

union nut G ½", ½" NPT

Scale resolution: engraved, 1 cm, printed on foil, 2 mm

Max. pressure: 10 bar

Max. temperature: -20 °C…100 °C

Density: any (no float used)

Max. viscosity: 50 mm²/s

Protective category: IP 67

Material combinations

Ordering Code Measuring tube Connection Flange (not wetted part) Sealing

SZM-K glass 1.4301 1.4301 FPM

SZM-S glass 1.4404 1.4404 FPM

SZM

SZM K04/0522 page 9

11. Order Codes

Top and bottom end Valves Connection Scale Switches3)

SZM-K =

1.4301

SZM-S =

1.4404

Top: closed

0 = Bottom: drain plug

2 = Bottom: cleaning hole

4 = Bottom: drain valve

Top: cleaning hole

1 = Bottom: drain plug

3 = Bottom: cleaning hole

5 = Bottom: drain valve

Top: vent valve

7 = Bottom: drain plug

8 = Bottom: cleaning hole

6 = Bottom: drain valve

0 = without

1 = 2 x

shut-off

valves

G4 = union nut G ½ male

I4 = union nut G ½ female

N4 = union nut ½" NPT male

M4 = union nut ½" NPT female

F4 = loose flange DIN 2526,

C DN15; PN16

F5 = loose flange DIN 2526,

C DN20; PN16

F6 = loose flange DIN 2526,

C DN25; PN16

F7 = loose flange DIN 2526,

C DN32; PN16

F8 = loose flange DIN 2526,

C DN40; PN16

F9 = loose flange DIN 2526,

C DN50; PN16

A4 = loose flange ANSI

B 16.5 ½"; 150 lbs

A5 = loose flange ANSI

B 16.5 ¾"; 150 lbs

A6 = loose flange ANSI

B 16.5 1"; 150 lbs

A7 = loose flange ANSI

B 16.5 1 ¼"; 150 lbs

A8 = loose flange ANSI

B 16.5 1 ½"; 150 lbs

A9 = loose flange ANSI

B 16.5 2"; 150 lbs

B4 = loose flange ANSI

B 16.5 ½"; 300 lbs

B5 = loose flange ANSI

B 16.5 ¾"; 300 lbs

B6 = loose flange ANSI

B 16.5 1"; 300 lbs

B7 = loose flange ANSI

B 16.5 1 ¼"; 300 lbs

B8 = loose flange ANSI

B 16.5 1 ½"; 300 lbs

B9 = loose flange ANSI

B 16.5 2"; 300 lbs

00 = without

G11) = plastic foil on

measuring tube

(2 mm division)

G21) = engraved

measuring tube

(1 cm-division)

S12) = sidewise

Alu-scale (with

plastic-foil,

2 mm-division)

S22) = sidewise

engraved

Alu-scale

(1 cm-division)

00 = without

1D4) = 1 x N/O, PNP

2D4) = 2 x N/O, PNP

nD4) = n x N/O, PNP

1S5)

= 1 x N/O, PNP

2S5)

= 2 x N/O, PNP

nS5) = n x N/O, PNP

1) scale length = Installation length - 120 mm

2) scale length = Installation length - 100 mm

Capacitive sensors

Ideal for water, water-based solutions and solvent-based liquids.

Ideal for oils, greases, lubricants, inks, acids, sauces, water-based alkalis and cleaning agents.

Note: Please specify the installation length "L" in clear text, while ordering.

SZM

page 10 SZM K04/0522

12. Dimensions

Vertical dimensions L

tot

[mm]

Bottom end

Top end

closed

cleaning hole

vent valve

drain plug

L + 72

L + 95

L + 129

cleaning hole

L + 93

L + 116

L + 150

drain valve

L + 127

L + 150

L + 184

Horizontal dimensions Lho [mm]

With shut-of

valves Without shut-of

valves

Description

Model code

Length (L

)

Model code

Length (L

)

Union-nut

SZM-x x 1 Gx

147

SZM-x x 0 Gx 84

SZM-x x 1 Nx

SZM-xx0Nx

SZM-x x 1 Ix

153

SZM-x x 0 Ix 90

SZM-x x 1 Mx

SZM-x x 0 Mx

Flange DIN

SZM-x x 1 Fx

139 SZM-xx0Fx 76

Flange ANSI #150

SZM-x x 1 Ax

141 SZM-x x 0 Ax 78

Flange ANSI #300

SZM-x x 1 Bx

146 SZM-x x 0 Bx 83

Inspection length in all cases Lv = L - 100 mm

L = Total length

tot

L = Inspection length

L = Installation length

L = Horizontal length

L = Valve leng th

valve

L = Total length

tot

L = Inspection length

L = Installation length

L = Horizontal length

L = Total length

to t

L = Inspection length

L = Installation length

L = Horizontal length

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