Kobold SWK 1201 Manual de usuario

Operating Instructions

for

Float Flow Meter / Monitor

Model: SWK

SWK

page 2 SWK K06/0618

1. Contents

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

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

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

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

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

6.Use in Hazardous Areas ...............................................................................5

6.1General ................................................................................................5

6.2Electrical Contact.................................................................................5

6.3Equipotential Bonding ..........................................................................5

7.Mechanical Connection.................................................................................6

8.Electrical Connection ....................................................................................6

9.Operation / Configuration / Adjustments .......................................................7

9.1Adjustment of Limit-Value (SWK-1...) ..................................................7

9.2Adjustment of Limit-Value (SWK-2...) ..................................................7

10.Maintenance .................................................................................................8

11.Technical Information....................................................................................8

12.Order Codes .................................................................................................9

13.Dimensions .................................................................................................10

14.EU Declaration of Conformance..................................................................11

Manufactured and sold by:

Kobold Messring GmbH

Nordring 22-24

D-65719 Hofheim

Tel.: +49(0)6192-2990

Fax: +49(0)6192-23398

E-Mail: [email protected]

Internet: www.kobold.com

SWK

SWK K06/0618 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.

Diagram 8, Pipe, Group 1 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:

Float Flow Meter / Monitor Model: SWK

Operating Instructions

SWK

page 4 SWK K06/0618

4. Regulation Use

These units, type SWK, are used for the purpose of measuring and monitoring

liquid flow. Only clean, low-viscous and homogeneous liquids may be measured

which do not chemically attack the materials used in the construction of these

units. An attempt to measure high-viscous liquids may lead to considerable

measurement errors.

Large dirt-particles can cause the blockage of float and subsequently turn on

error indications. Also, ferrite particles, which deposit on float (with embedded

magnets), can generate the same effect (we recommend a magnet-filter).

These units are configured in the following manner:

Housing made of Brass, St. Steel or PVC

Attached reed contact N/O with 1m PVC cable (Brass version)

Attached reed contact N/O with 2m PVC cable (PVC/VA version)

Attached and aligned pointer display (option)

5. Operating Principle

KOBOLD Flow Meter/Monitor of type SWK operates according to the well known

float principle, however without making use of the generally employed extended

measuring tube. Inside a cylindrical flow-tube a float with aperture moves in the

direction of the flow against the recoiling force of a spring. Within the float, a pair

of magnets is located which trigger a potential-free protective-gas reed contact

and drives a pointer display. The reed contact is mounted on the exterior of the

flow-housing. The springs arrangement allows the unit to be operated without

consideration to mounting position and keeps the installation dimensions to a

minimum. Flow monitors of type SWK generally find application where small

volume flow needs to be measured in a fail-safe manner.

SWK

SWK K06/0618 page 5

6. Use in Hazardous Areas

6.1 General

The Flow Meter/ Monitor does not have a potential igniting source of its own as a

mechanical operating resource; it does not get any identification according to the

guideline 94/9/EC ("ATEX 100a”).

The mounted contact can be used in intrinsically safe circuits as a “simple

apparatus” according to EN 60079-14. The following limit values for the switching

contact should not be exceeded: U = 30 VDC, I = 100 mA, P = 1,2 W.

The measurement units can be used as follows:

a) In the Zone 2 (Gas-Ex, Cat. 3G) into explosion group of IIA, IIB and IIC

b) In the Zone 22 (Dust-Ex, Category 3D) at non-conductive dusts with a

minimum igniting energy of > 3 mJ

c) In the Zone 1 (Gas-Ex, Cat. 2G) into explosion group of IIA, IIB and IIC

d) In the Zone 21 (Dust-Ex, Category 2D) at non-conductive dusts with a

minimum igniting energy of > 3 mJ

6.2 Electrical Contact

In the Ex-area, the Flow Meter/ Monitor can be used according to Category 2G

and 2D for group II; in Zone 1 and 21 in connection with a switching amplifier for

protection type Ex II (2)GD [EEx ia] IIC (intrinsically safe).

The electrical connection is explained in section 8 Electrical Connection.

6.3 Equipotential Bonding

The Flow Meter/ Monitor will allow equipotential bonding of the equipment. This

will occur only when the connection pipes are made of metal.

SWK

page 6 SWK K06/0618

7. Mechanical Connection

Before installation:

Make sure that the permitted maximum operating pressure and the operating

temperature of the device are not exceeded.

Make sure that the electrical supply for the devices corresponds with the

operational data of the device.

Make sure that no remains of packing material exist within the device.

The devices should not be installed within an inductive field.

If possible, it should be checked, after the mechanical installation whether the

connection joints/ piping is properly sealed.

Attention! A displacement of switching range occurs if the flow takes

place from top to bottom.

8. Electrical Connection

Attention! Make sure that the voltage values of your system

correspond with the voltage values of the measuring unit, mentioned

on type-label.

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

The connection of the bistable reed contact succeeds is accomplished through

the cable on the contact housing. The potential-free contact closes on rising

level above the adjusted flow value.

SWK

SWK K06/0618 page 7

9. Operation / Configuration / Adjustments

The commissioning of these units is prohibited in machines (as long as the

guidelines 89/392/EWG remain enforced), which do not comply with these

guidelines.

The unit is supplied in 'ready for operation' condition. The switching point is

adjusted on the lowest scale value.

9.1 Adjustment of Limit-Value (SWK-1...)

Loosen the knurled nut on the reed contact.

Adjust the marking on the contact for the desired value on the scale. In once

positioned the knurled nut should be tightly screwed.

9.2 Adjustment of Limit-Value (SWK-2...)

Loosen the knurled nut on the reed contact.

Connect a suitable continuity-tester on cable ends.

Case 1: On an installed unit

Open the supply line, and let the flow-medium enter slowly, till the pointer

display shows the desired flow value- at which the rising flow should operate

the switch (the value for the decreasing flow lies below due to the hysteresis).

Case 2: On an uninstalled unit the adjustment may be performed by lifting

the float with a suitable tool.

Switch-housing is repositioned from top to bottom, till the reed contact just

closes (electrical continuity). In this position, secure the contact by tightening

the knurled nut.

The unit is now adjusted and ready for operation.

On correct adjustment, the limit-value contact performs bistable action. That

means, even after on crossing above the adjusted limit-values, the contact

remains closed.

Hysteresis

Hysteresis is an indication of difference between switch-on (rising float) and

switch-off (falling float) points of a contact. The average hysteresis corresponds

to a float-centre movement of about 3 mm.

SWK

page 8 SWK K06/0618

10.Maintenance

As long as the medium to be measured is not contaminated, the device SWK is

almost maintenance-free. With lime or such depositions within inner sections

the device should be cleaned regularly.

Attention! Before the commencement of maintenance work, make sure

that the supply wires are de-energized.

11.Technical Information

Housing/Float: SWK-x1..: brass nickel plated, Ms 58

SWK-x2..: stainless steel, 1.4301

SWK-13..: PVC

Connections: G 1/2 female

Float: SWK-x1..: brass, Ms 58

SWK-x2..: stainless steel, 1.4301

SWK-13..: PVC

Magnets: ceramic

Compression spring: stainless steel 1.4310

Gaskets: none

Butt rings: SWK-x1...: brass, Ms 58

SWK-x2...: stainless steel, 1.4301

SWK-x13...: PVC

Max. temperature: SWK-x1.., SWK-x2: 100 °C

SWK-13..: 60 °C

Max. pressure: SWK-x1.., SWK-x2: 250 bar

SWK-13..: 6 bar

Loss of pressure: 200 mbar at full scale

Flow monitors

Flow meters

and monitors

Pressure loss

at f.s.

[mbar]

Material

brass

Material

stainless

steel

Material

PVC Material

Brass

Material

stainless

steel

SWK 1101 SWK 1201 - SWK 2101 SWK 2201 160

SWK 1102 SWK 1202 - SWK 2102 SWK 2202 180

SWK 1108 SWK 1208 SWK 1308 SWK 2108 SWK 2208 180

SWK 1118 SWK 1218 SWK 1318 SWK 2118 SWK 2218 460

SWK 1140 SWK 1240 SWK 1340 SWK 2140 SWK 2240 330

SWK 1190 SWK 1290 SWK 1390 SWK 2190 SWK 2290 360

SWK 1116 SWK 1216 SWK 1316 SWK 2116 SWK 2216 600

SWK 1124 SWK 1224 SWK 1324 SWK 2124 SWK 2224 490

SWK

SWK K06/0618 page 9

Installation position: any position

Switch contact: bistable reed contact

N/O contact or changeover contact with

increasing flow rate

Breaking capacity N/O contact: max. 230 VAC/DC, max. 3 A

max. 60 W/VA

Changeover contact: (SWK-xxxxU)

max. 100 VAC/DC, max. 0.5 A, max. 5W/VA

Electr. connection: 1 m PVC cable

Switching hysteresis: 3 mm on scale (mean value)

Repeatability: ≤2.5 % (contact)

± 4 % f. s. (indicator)

Protection: IP 68 contact; IP 54 indicator

Ex range: ATEX Zone 1 as “simple apparatus”

Average electrical switch contact life (MTTF):

at max. electrical load: 105switching operations

at half load (<10%max. load): 5*107switching operations

at low load (<10V/<1mA): 108switching operations

12.Order Codes

Example: SWK-1101

Switching

range

L/min. water

Connection

female Flow monitors

Flow meters and monitors

Switch contact

Material

brass

Material

stainless

steel

Material

PVC Material

brass

Material

stainless

steel

0.05 - 0.1 G 1/2 SWK 1101 SWK 1201 - SWK 2101 SWK 2201

without = N/O

contact

u = changeover

contact

0.1 - 0.2 G 1/2 SWK 1102 SWK 1202 - SWK 2102 SWK 2202

0.2 - 0.8 G 1/2 SWK 1108 SWK 1208 SWK 1308 SWK 2108 SWK 2208

0.5 - 1.8 G 1/2 SWK 1118 SWK 1218 SWK 1318 SWK 2118 SWK 2218

1.7 - 4.0 G 1/2 SWK 1140 SWK 1240 SWK 1340 SWK 2140 SWK 2240

4.0 - 9.0 G 1/2 SWK 1190 SWK 1290 SWK 1390 SWK 2190 SWK 2290

8 - 16 G 1/2 SWK 1116 SWK 1216 SWK 1316 SWK 2116 SWK 2216

13 - 24 G 1/2 SWK 1124 SWK 1224 SWK 1324 SWK 2124 SWK 2224

SWK

page 10 SWK K06/0618

13.Dimensions

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