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FISCHER Mess- und Regeltechnik GmbH

Product and functional description | 2

BA_EN_NK10

7 / 28

2.4 Design and mode of operation

The swim system of the fill level limiter is contained in the fluid-filled reservoir
(expansion tank). The swimming motions generated by changes in the fill level
are transmitted directly to the micro-switch S1 by a swimmer rod sealed in a
stainless-steel bellows. The fulcrum of the swimmer rod is located outside of the
pressure chamber.

There is also a test button outside the pressure chamber with which a function
check as per DIN 4754-3 can be run without lowering the fill level. When
pressed, the body of the swimmer is moved against its buoyancy.

The factory default switching point of micro-switch S1 is set so that it switches
when the swimmer rod is horizontal. The optional warning switch S2 switches
approx. 2.5 mm before S1.

The fill level height at which switching is triggered depends on the density of the
heat carrier. The lowest density at which a secure function is guaranteed is 0.6
kg/dm³.

When the medium has a density of 1.0 kg/dm³, the switching level is approx.
60mm below the middle of the flange or socket.

Содержание NK10 B

Страница 1: ...Operating manual NK10 Fill Level Limiter 09005111 BA_EN_NK10 Rev ST4 E 01 19 09005111 ...

Страница 2: ...t of the company FISCHER Mess und Regeltechnik GmbH Bad Salzuflen Reproduction for internal use is expressly allowed Brand names and procedures are used for information purposes only and do not take the respective patent situation into account Great care was taken when compiling the texts and illustrations Nevertheless errors cannot be ruled out The company FISCHER Mess und Regeltechnik GmbH will ...

Страница 3: ... Delivery scope 6 2 2 Use as intended 6 2 3 Function diagram 6 2 4 Design and mode of operation 7 3 Installation and assembly 8 3 1 Process connection 8 3 2 Electrical connections 8 4 Commissioning 9 4 1 Generalities 9 4 2 Function test 9 5 Servicing 10 5 1 Maintenance 10 5 2 Transport 10 5 3 Service 10 5 4 Disposal 10 6 Technical data 11 6 1 General 11 6 2 Application conditions 11 6 3 Switch con...

Страница 4: ...r the limit values given in the technical specifications can be hazardous or cause harm to persons the environment or the plant itself The supplier of the equipment will not be liable for damage claims if this should happen 1 4 Safety Instructions for the Operating Company and the Operator The safety instructions governing correct operation of the instrument must be observed The operating company ...

Страница 5: ...ion DANGER Type and source of danger This indicates a direct dangerous situation that could lead to death or serious injury highest danger level a Avoid danger by observing the valid safety regulations WARNING Type and source of danger This indicates a potentially dangerous situation that could lead to death or ser ious injury medium danger level a Avoid danger by observing the valid safety regula...

Страница 6: ... lowest permissible level As a limiter the device conforms to the requirements of DIN 4754 The devices in this series are type tested in compliance with DIN 4754 3 certified to DNVGL CG 0339 Functional safety as per IEC 61508 61511 certified to directive 2014 68 EU Copies of the certificates can be found in the appendix to the operating manual 2 3 Function diagram 1 2 3 6 4 9 8 7 10 approx 10 mm a...

Страница 7: ...o a test button outside the pressure chamber with which a function check as per DIN 4754 3 can be run without lowering the fill level When pressed the body of the swimmer is moved against its buoyancy The factory default switching point of micro switch S1 is set so that it switches when the swimmer rod is horizontal The optional warning switch S2 switches approx 2 5 mm before S1 The fill level hei...

Страница 8: ... device can be installed on site Take care that the side of the device marked TOP faces upwards when being installed NOTICE Please check The swimmer must be able to move freely in the vertical direction Test the switching function using the test button 3 2 Electrical connections By authorized and qualified specialized personnel only When connecting the unit the national and international electro t...

Страница 9: ...button outside the pressure chamber with which a function check as per DIN 4754 3 can be made without lowering the fill level When pressed the body of the swimmer is moved against its buoyancy The factory default switching point of switch S1 clamps 1 2 3 is set so that it switches when the swimmer rod is horizontal The optional warning switch S2 switches ca 2 5 mm before S1 Check the function of t...

Страница 10: ...tions of the other units also need to be observed 5 2 Transport The measuring device must be protected against impacts It should be transpor ted in the original packaging or a suitable transport container 5 3 Service All defective or faulty devices should be sent directly to our repair department Please coordinate all shipments with our sales department WARNING Process media residues Process media...

Страница 11: ...e of medium NK10 1 20 bar 400 C NK10 2 20 bar 400 C NK10 3 10 bar 350 C NK10 4 16 bar 400 C NK10 5 16 bar 400 C NK10 6 20 bar 400 C NK10 7 20 bar 400 C NK10 A 10 bar 350 C NK10 B 20 bar 400 C NK10 F 20 bar 400 C NK10 G 20 bar 400 C NK10 H 20 bar 400 C NK10 K 150 lbs 400 C NK10 M 300 lbs 400 C NK10 N 300 lbs 400 C NK10 P 300 lbs 400 C 6 3 Switch contacts Maximum load data at ohmic load 250 V AC 6A ...

Страница 12: ...ce with EN 61508 61511 Cert no Z10 11 04 27632 002 Only for devices with the order code for SIL optional information 6 6 Construction design Swimmer system Stainless steel 1 4571 Metal bellows Stainless steel 1 4571 Flange counter flange Stainless steel 1 0425 P265GH or 1 4571 Welding socket St 35 8 1 0345 P235GH Screws nuts x G 7258 C35PbK Please note the material information in the dimensional d...

Страница 13: ... 24 22 18 8 NK10G 1 4571 DN80 PN40 200 160 24 22 18 8 209 359 125 B b d D LK Ø 7 2 Fig 4 Dimensional picture NK102 NK10G Version Flange material Port A D Ø LK Ø B b d Ø No of holes NK101 1 0425 P265GH DN65 PN40 230 185 145 22 20 18 8 NK103 1 0425 P265GH DN65 PN16 234 185 145 18 16 18 4 NK107 1 4571 DN65 PN40 230 185 145 22 20 18 8 379 125 B b d D LK Ø 6 2 A Fig 5 Dimensional picture NK101 NK103 NK...

Страница 14: ...NK10F 1 0425 P265GH DN80 PN40 200 160 24 19 5 18 8 209 359 125 Ø 7 2 D LK Ø120 Ø106 d B b Fig 6 Dimensional picture NK10F Version Flange material Port A D Ø LK Ø B b d Ø No of holes NK106 1 0425 P265GH DN65 PN40 230 185 145 22 17 5 18 8 NK10A 1 0425 P265GH DN65 PN16 234 185 145 18 13 5 18 4 B b 379 125 d D LK Ø109 Ø95 Ø 6 2 A Fig 7 Dimensional picture NK106 NK10A ...

Страница 15: ... B b d Ø No of holes NK10H 1 4571 DN80 PN40 200 160 24 22 18 8 B b 209 359 d D LK Ø106 125 Ø 7 2 Fig 8 Dimensional picture NK10H 6 6 1 5 Flange DIN EN 1092 1 Type D Version Flange material Port D Ø LK Ø B b d Ø No of holes NK10B 1 0425 P265GH DN65 PN40 185 145 22 20 18 8 230 279 125 B b d D LK Ø110 Ø94 Ø 6 2 4 Fig 9 Dimensional picture NK10B ...

Страница 16: ...2 4 24 22 8 19 1 4 NK10N 1 0425 P265GH 3 300 lbs 204 209 5 168 1 28 4 26 8 22 3 8 NK10P 1 0425 P265GH 4 300 lbs 201 254 200 1 31 7 30 1 22 3 8 359 B b d 125 D LK Ø 7 2 A Fig 10 Dimensional picture NK10K NK10N NK10P Version Flange material Port A D Ø LK Ø B b d Ø No of holes NK10M 1 0425 P265GH 2 5 300 lbs 227 190 5 149 3 25 4 23 8 22 3 8 B b 359 d D LK 125 Ø 6 2 A Fig 11 Dimensional picture NK10M ...

Страница 17: ... Form B1 DN 80 PN40 1 4571 6 DIN EN 1092 1 Form C DN 65 PN40 1 0425 P265GH A DIN EN 1092 1 Form C DN 65 PN16 1 0425 P265GH F DIN EN 1092 1 Form C DN 80 PN40 1 0425 P265GH B DIN EN 1092 1 Form D DN 65 PN40 1 0425 P265GH h DIN EN 1092 1 Form G DN 80 PN40 1 4571 K ANSI B16 5 3 150 lbs 1 0425 P265GH C ANSI B16 5 2 5 300 lbs 1 0425 P265GH N ANSI B16 5 3 300 lbs 1 0425 P265GH P ANSI B16 5 4 300 lbs 1 04...

Страница 18: ...8 Attachments FISCHER Mess und Regeltechnik GmbH 18 28 BA_EN_NK10 8 Attachments 8 1 Declarations of conformity Fig 12 CE_DE_NK10 part1 ...

Страница 19: ...FISCHER Mess und Regeltechnik GmbH Attachments 8 BA_EN_NK10 19 28 Fig 13 CE_DE_NK10 part2 ...

Страница 20: ... type examination mentioned below fulfills the requirements of directive 97 23 EC Geprüft nach Richtlinie 97 23 EG Tested according to 97 23 EC Prüfbericht Nr Test report No Beschreibung des Baumusters Description of type pressure equipment EG Baumusterprüfung Modul B EC type examination module B 1081P9143 13 2 Füllstandsbegrenzer Typ NK 10 level limiter type NK 10 NK101 NK102 NK103 NK104 NK105 NK...

Страница 21: ...FISCHER Mess und Regeltechnik GmbH Attachments 8 BA_EN_NK10 21 28 8 2 2 DNV GL Certificate Fig 15 DNVGL_TAA000020S_Page_1 ...

Страница 22: ...8 Attachments FISCHER Mess und Regeltechnik GmbH 22 28 BA_EN_NK10 Fig 16 DNVGL_TAA000020S_Page_2 ...

Страница 23: ...FISCHER Mess und Regeltechnik GmbH Attachments 8 BA_EN_NK10 23 28 Fig 17 DNVGL_TAA000020S_Page_3 ...

Страница 24: ...er Str 37a 32107 Bad Salzuflen Filling controls NK10 DIN 4754 3 2015 03 Certification scheme Draught diverter and Level controller 2016 01 10F001 2020 10 31 This certificate entitles the holder to use the mark of conformity shown above in conjunction with the specified registration number See annex for further information 2016 02 11 S S Dipl Wi Ing FH Sören Scholz Head of Certification Body DIN CE...

Страница 25: ...easured values values mechanically by float rod with bellow Operating pressure max 20 bar depending on the design Ambient temperature 10 to 70 Medium temperature 10 to 400 depending on the design Rated voltage 250 V AC 6 A or 250 V DC 0 25 A Installation position horizontal TÜV NORD CERT GmbH Am TÜV 1 30519 Hannover FBW 1810 15 dated 2015 10 07 DIN CERTCO Gesellschaft für Konformitätsbewertung mbH...

Страница 26: ...8 Attachments FISCHER Mess und Regeltechnik GmbH 26 28 BA_EN_NK10 8 4 SIL Certificate Fig 20 SIL_IEC61508_DE_EN 1 Part1 ...

Страница 27: ...FISCHER Mess und Regeltechnik GmbH Attachments 8 BA_EN_NK10 27 28 Fig 21 SIL_IEC61508_DE_EN 1 Part2 ...

Страница 28: ...8 Attachments FISCHER Mess und Regeltechnik GmbH 28 28 BA_EN_NK10 8 5 EAC Declaration Fig 22 EAC_RU_Д DE AЛ16 B 65125 ...

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