Kobold KSK Manuale utente

Operating Instructions

for

Plastic Flow Meter

Model: KSK

KSK

page 2 KSK K03/0316

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.Reed Contact, bistable (option) ...........................................................5

7.2.Electronic Contact (option)...................................................................6

8.Operation......................................................................................................7

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

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

11.Order Codes ...............................................................................................10

12.Dimensions .................................................................................................11

13.EU Declaration of Conformance..................................................................12

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

KSK

KSK K03/0316 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 6, 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:

Plastic Flow Meter model: KSK

Operating Instructions

4. Regulation Use

Any use of the Plastic Flow Meter, model: KSK, 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.

KSK

page 4 KSK K03/0316

5. Operating Principle

Kobold Plastic Flow Meters and Switches, model KSK, are based on the well

known suspended float principle.

They are used for measuring and monitoring flows in closed pipes.

The media flows, from below, through a conical plastic measuring tube. This

raises the float and the flow rate can be read off against scale. The instruments

can be fitted with bistable switches.

The use of high-quality material PVDF (model KSK 3...)means that this type is

very suited for service with corrosive media.

Special advantages

Shock resistant and corrosion-resistant

May be inserted/removed radially

Special scales available

Short installation length

Plastic float and fitting generally made of PVDF

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.

The units with bistable reed switch may not be installed within an inductive

field.

If possible, immediately after making mechanical connections, check whether

the connections are properly sealed with no evidence of leakage

(see section 8 Operation).

Detailed information regarding installation of float flow meters is

available in VDI/VDE guidelines 3513.

KSK

KSK K03/0316 page 5

7. Electrical Connection

7.1. Reed Contact, bistable (option)

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

Loosen the plug-cap holding screw and remove the cap from the switch

housing.

Connect the supply lines inside the plug in accordance with the connection

diagram opposite.

If the set point has not yet been adjusted, it may be done at this point. (see

section 8. Operation).

Set the plug to the socket and fix it with the safety screws.

Attention! The stated electrical parameters of the contact may not

be exceeded, even for a short period of time. For inductive or

capacitive loads, we recommend the use of contact protection

measures respectively the application of a contact protection relay.

KSK

page 6 KSK K03/0316

7.2. Electronic Contact (option)

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

Loosen the plug-cap holding screw and remove the cap from the switch

housing.

Connect the supply lines inside the plug in accordance with the connection

diagram opposite.

If the set point has not yet been adjusted, it may be done at this point. (see

section 8. Operation).

Set the plug to the socket and fix it with the safety screws.

Attention! The stated electrical parameters of the contact may not

be exceeded. For inductive or capacitive loads, we recommend the

use of contact protection measures respectively the application of a

contact protection relay.

After connecting the external devices, and adjusting the switch housing to the

desired switch points, all the connection work is completed. The unit is ready for

operation.

Signal max. 100mA

LED

GND

KSK

KSK K03/0316 page 7

8. Operation

In order to initialise the bistable switching 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 both red sliders

as reference points.

Reference edge for falling flow: bottom-edge, switch housing

Reference edge for rising flow: approx. 5 mm above the bottom-edge of switch

housing.

Slide the switch housing up or down until the reference edge coincides with the

desired switch-point scale reading.

Hysteresis

Hysteresis is the difference between the level at which “switch-on” occurs during

rising flow and the level at which “switch-off” occurs during decreasing flow. The

hysteresis is approximately 5 mm on the float range.

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 KSK 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.

KSK

page 8 KSK K03/0316

10.Technical Information

Materials

Measuring tube: Trogamide T (KSK 1..) or polysulfone (KSK 2..) or

PVDF (KSK 3..)

not transparent, but opaque translucent

Float: PVDF

O-rings: EPDM (KSK-1../KSK-2..)

FPM (KSK-3..)

Max. operating pressure: PN 10

Max. operating temp.: KSK 1... max. 60 °C (0...60 °C)

KSK 2... max. 100 °C (0...100 °C)

(60 °C with PVC screwed fitting)

max. 85 °C (with contact)

KSK 3... max. 140°C

Accuracy class: 4 (according to VDE / VDI 3513, sheet 2)

Connection (standard)

KSK 1.. and KSK 2..: PVC glue-in connection

KSK 3...: Welding sleeve



Connection (optional) for KSK 1... and KSK 2... only

KSK-

..080../..150../..200..: Brass or stainless steel union nut

with G 1/2 female or male

or G 3/4 male

KSK-

..300../..500../..999..: PVC union nut with

G 1/2; G 3/4, G 1 internal thread

or G1 female cast iron

KSK-

..015../..025../..050....100..: PVC G 1/4 female

Contacts (optional)

The flow meter can be fitted with either reed contacts or electronic contacts.

KSK

KSK K03/0316 page 9

Reed contacts (bistable)

Switching voltage*: max. 130 VAC

Breaking capacity*: max. 10 W / 10 VA

Switching current*: max. 0.5 A

Contact resistance: < 150 m Ohm

Insulation resistance: > 105 Ohm

Allowed ambient temperature: 0...+ 55 °C

Protection: IP 65

Contact hysteresis: approximately 5 - 7 mm floater distance

* Short-time overshoot is not allowed. The use of a contact protection relay is

therefore recommended (see Accessories Z2 brochure).

Electronic contacts (bistable)

The contact operates electronically with no mechanical parts that are subject to

wear and tear.

Operating voltage: 9 - 24 VDC

Switching output: NPN max. 100 mA

Ambient temperature: 0...+ 55°C

Protection: IP 65

Contact hysteresis: < 6 mm

Dimensions: 33 x 18 x 40 mm

Weight with plug: 16 g

Output signal (with LED at the top)

Float above contact across

PIN 1 and PIN E: 0 V

Float below contact across

PIN 1 and PIN E: 9 - 24 V LED out

KSK

page 10 KSK K03/0316

11.Order Codes

Measuring

range

water L/h

Order no.

Trogamide Order no.

Polysulfone Order No.

PVDF* Scale measuring

range see table Thread fitting option Contact option

1.5 - 11 KSK - 1015... KSK - 2015... -

Standard

H= L/h Water

Special scale

A= air; 0 bar gauge

B= air; 1 bar gauge

C= air; 2 bar gauge

D= air; 3 bar gauge

E= air; 4 bar gauge

F= air; 5 bar gauge

G= air; 6 bar gauge

I= air; 7 bar gauge

K= air; 8 bar gauge

L= air; 9 bar gauge

M= air;10 bar gauge

Y= other

K16= PVC-glue-in connection 16

V16= PVDF-Welding sleeve 16*

P08= PVC G 1/4 female

O0= without contact

S0= 1 N/O contact

SS= 2 N/O contacts

SC= 1 N/O contact/

1 NC contact

C0= 1 NC contact

CC= 2 NC contacts

E0= 1 electr. cont.

EE= 2 electr. cont.

2.5 - 30 KSK - 1025... KSK - 2025... KSK - 3025...*

5 - 50 KSK - 1050... KSK - 2050... KSK - 3050...*

10 - 100 KSK - 1100... KSK - 2100... KSK - 3100...*

8 - 80 KSK - 1080... KSK - 2080... KSK - 3080...* K20= PVC-glue-in connection 20

V20= PVDF-Welding sleeve 20*

IG1= brass G 1/2 female

AG1= brass G 1/2 male

AG3= brass G 3/4 male

IG2= stainless steel G 1/2 female

AG2= stainless steel G 1/2 male

AG4= stainless steel G 3/4 male

O0= without contact

S0= 1 N/O contact

SS= 2 N/O contacts

SC= 1 N/O contact/

1 NC contact

C0= 1 NC contact

CC= 2 NC contacts

E0= 1 electr. cont.

EE= 2 electr. cont..

20 - 150 KSK - 1150... KSK - 2150... KSK - 3150...*

30 - 200 KSK - 1200... KSK - 2200... KSK - 3200...*

30 - 300 KSK - 1300... KSK - 2300... KSK - 3300...*

K32= PVC-glue-in connection 32

V32= PVDF –Welding sleeve 32*

P15= PVC G 1/2 female

P20= PVC G 3/4 female

P25= PVC G 1 female

T25= Cast iron G 1 female

O0= without contact

S0= 1 N/O contact

SS= 2 N/O contacts

SC= 1 N/O contact/

1 NC contact

C0= 1 NC contact

CC= 2 NC contacts

E0= 1 electr. cont.

EE= 2 electr. cont..

50 - 500 KSK - 1500... KSK - 2500... KSK - 3500...*

100 - 1000 KSK - 1999... KSK - 2999... KSK - 3999...*

*KSK-3... for PVDF-Welding sleeve and without air scale only

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