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NBK-M 

2. Note 

Please read these operating instructions before unpacking and putting the unit 
into operation. Follow the instructions precisely as described herein.  
These instruments 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. 
 

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. 
 

What’s included in the shipment: 

The standard delivery includes: 

 Level Indicator   model: NBK-M 

• 
• 

Operating Instructions  

Note:

 If switches were ordered as an option, they will not be attached to the level 

indicator. They are packed inside the shipping container. Be sure to check the 
packaging for any extra items. 

 
Please inspect the devices using the packing slip. All options are listed here. 
 
 

4. Regulation Use 

Any use of the model: NBK-M which exceeds the manufacturers specification 
may invalidate its warranty. Therefore any resulting damage is not the 
responsibility of the manufacturer. The user assumes all risk for such usage.  
 
The NBK-M Mini Bypass Level Indicator is used for continuous measurement, 
indication, and monitoring of liquids in tanks, vessels, reservoirs, basins etc. 
Information is displayed on a magnetically coupled roller indicator. 
 
 
 
 
 
 
 
 
 

NBK-M_manual_3-5-04.doc  

Page 

Summary of Contents for nbk-m

Page 1: ...Operating Instruction Mini Bypass Level Indicator Model NBK M NBK M_manual_3 4 04...

Page 2: ...10 Technical Information 11 11 Order Codes 13 12 Maintenance 13 13 Dimensions 14 Manufactured and sold by Kobold Messring GmbH Nordring 22 24 D 65719 Hofheim Tel 49 0 6192 2990 Fax 49 0 6192 23398 E M...

Page 3: ...ages during transit What s included in the shipment The standard delivery includes Level Indicator model NBK M Operating Instructions Note If switches were ordered as an option they will not be attach...

Page 4: ...e chemically resistant to the liquid being measured Proper operation is also impaired by High degree of soiling Solids Crystallization Ferrite particles 4 2 Adjustable setpoint switches option The opt...

Page 5: ...ll therefore will correspond to the level in the vessel to which it is attached A float with flush encased magnet in the bypass tube follows the liquid level The magnetic float activates a roller indi...

Page 6: ...gnetic roller indicator if not already mounted on the bypass tube with the two accompanying clamps Mount and tighten the Switches if supplied on the bypass tube with the accompanying clamps The roller...

Page 7: ...rical supply lines are de energized To avoid faults caused by electrical fields from other circuits the cable should not be laid in conduits with power cables cables Unscrew cover and pull supply line...

Page 8: ...smitter and the magnetostrictive transducers are not suitable for installation in hazardous locations CAUTION Installers must be familiar with all local and national codes concerning electrical device...

Page 9: ...Us AGND AOUT 4 20 mA 24 V DC 8 Startup Fill vessel and switch on the electrical controller if present The entering liquid lifts up the float and thus the coupled magnet actuator The roller indicator...

Page 10: ...float movement is achieved by factory tuning of the float magnet and the contact 9 Trouble Shooting Error The tank is full but there is no indication Check that the float is present in the system If t...

Page 11: ...hing capacity 60 W VA 230 VAC DC 1 0 A NBK R Process temperature max 100 C 212 F Ambient temperature max 75 C 170 Protection type IP 67 NEMA 4X Connection 3 Ft PVC cable Case plastic Limit contacts mo...

Page 12: ...Resolution 10 mm 0 4 for measuring length 78 20 mm 0 8 for measuring length 78 Transmitter model T Magnetostrictive sensor with 4 wire transmitter Output 4 20 mA Load max 500 Max length 4000 mm 160 Su...

Page 13: ...ontact Eex d IIC T6 NBK RT200 High temperature contact max 200 C 12 Maintenance The drain plug should be opened now and again to wash out any deposits in case the liquid to be measured contains dirt p...

Page 14: ...M 13 Dimensions NBK M with roller indication millimeters Dimension C mm for DIN V Flange Model DN 10 DN 15 DN 20 DN 25 PN 6 46 47 47 46 PN 16 53 52 53 49 PN 40 53 55 55 51 Page 14 NBK M_manual_3 5 04...

Page 15: ...ctive transmitter millimeters Dimension C mm for ASME V Flange Model 1 150 lbs 46 47 47 300 lbs 53 52 53 Dimension C for R or NPT thread 60 mm Dimension A Medium density 0 8 g cm 285 mm Medium density...

Page 16: ...ess steel 1 4571 L1 Drain valve G 1 4 stainless steel 1 4571 L2 Drain valve 1 4 NPT stainless steel 1 4571 H1 Rinsing connection DN 15 PN 16 top and bottom H2 Rinsing connection ASME 1 2 150 lbs top a...

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