Kobold Nbk-07n15-000a | Explosion Proof Atex Gl | Gauges | Controlsystemsusa
Process Control Instrumentation, Field Devices and Industrial Automation

KOBOLD   NBK-07N15-000A

KOBOLD NBK-07N15-000A
  • DESCRIPTION
  • FEATURES
  • SPECIFICATIONS
  • LITERATURE
KOBOLD NBK-07 Bypass Level Measurement Indicator. Class 400 PN 63 Rated Pressure. 18' Max measuring length. ANSI Flange and NPT Threads connections. 316 SS. Analog Output, HART, PROFIBUS PA, Foundation TM Fieldbus and Digital Display Options

NBK-07N15-000A
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Connection
Nominal Size
Roller / Ball Indicator
Sensor / Transmitter
A option only with options AE and AC
Media Density Float
Top Bypass Tube Connections
Bottom Bypass Tube Connections
Process Connection Options
Scales
Thermal Screening
Heating Jacket
Electrical Outputs
Display Options
Additional Options
Tests / Certificates

   3 Weeks  ]

Features
  • Measuring Length: 18' Max over 18' Two-Part or Multipart
  • Pressure: Max. Class 1500
  • Temperature:
    - 40... 750 °F (Ceramic rollers)
    32 ... 250 °F (PP-rollers)
    -155 ... 390 °F (Ball display)
  • Viscosity: Max. 200 mm 2 /s Standard (Option: 460 mm 2 /s, only NBK-03)
  • Connection:
    ANSI Flange 1⁄2" ... 2"
    NPT Threads 1⁄2" ... 11⁄4"
  • Material: 316-Ti Stainless Steel
  • Magnetically Coupled Magnet Roller or Ball Indicating Displays
  • Limit Contacts
  • Analog Output, HART ® , PROFIBUS ® PA, Foundation TM Fieldbus, & Digital Display Options
Description

KOBOLD bypass level indicators are used for continuous measurement, display, and monitoring of liquid levels. The bypass tube is attached to the side wall of the tank. According to the laws of hydrostatic pressure, the level in the bypass tube will equal the level in the tank. A fl oat, with embedded circular magnets, is located in the bypass tube and follows the liquid level, transferring the level in a non-contacting manner to a display attached to the outside of the bypass tube or to a sensing device.

The following indication and sensing devices are available:

Magnetic Roller Indicator

As the fl oat passes by, the red/white rollers are rotated in suc cession by 180° around their own axes. The rollers change from white to red as the level rises and from red to white as the level falls. The advantage of ball display is the higher protection category, good visibility of 180° and higher vibration resistance with fi lled version. The level in a tank or a mixer is continuously displayed as a red column, even when the power fails.

Transmitter

To remotely sense the level, a transmitter with a chain of resistors or a magnetostrictive transducer can be mounted outside the bypass tube. A continuous standard signal of 4 ... 20 mA is generated by means of a fi tted transmitter. This standard signal can then be displayed on analog or digital indicating devices. Optionally, HART ® PROFIBUS ® - PA or Foundation TM Fieldbus communication protocols are possible.

Universal Indicating Unit

A universal indicating unit, series ADI-1, can be mounted on the bypass tube to display and evaluate the standard signal (4 ... 20 mA) generated by the transmitter.

Limit Contacts

One or more reed contacts, for point level sensing or for level control, can be mounted to the bypass tube.

Applications

  • Storage tanks
  • Tanks on ships
  • Agitator vessel
  • Water tanks

Technical Details
Process Connection:Flange ASME B 16.5 RF-2009: 1⁄2", 3⁄4", 1", 11⁄4", 11⁄2", 2"
NPT ANSI/ASME B1.20.1: 1⁄2", 3⁄4", 1", 11⁄4"
Bypass Tube:Ø 2.374", 316-Ti SS
(NBK-03/ ... /10)
Ø 2.8", 316-Ti SS (NBK-31/32)
NBK-03/06/07:Flat gasket: < 390 °F; PTFE, ≥ 390 °F, Klinger SIL ®
NBK-10:Reinforced graphite
NBK-31/32:RTJ-seal
Operating Pressure:ANSI 150/300/400/600/900/1500
PN 16/40/63/100/160/250/320
Operat. Temperature:32 ...250 °F (PP-rollers)
- 40 ... 750 °F (ceramic rollers)
-155... 390 °F (ball display)
(With NBK-31/32, the operating temprature is restricted to 212 °F)
Viscosity:Max. 200 mm 2 /s standard (Option: up to max. 460 mm 2 /s for NBK-03)
Max. Meas. Length:18' over 18', two-part or multipart
Overall Length:See dimensional drawing
ATEX- and GL-Approval:See separate description
Roller Display RP (max. continuous length 18')
Roller Material:Polypropylene
Display Glass:Plexiglas
Carrier Frame Material:Aluminium, anodized
Operat. Temperature:- 40... 750 °F
Protection:IP54
Roller Display RX (max. continuous length 18')
Roller Material:Ceramic
Display Glass:Borosilicate glass
Carrier Frame Material:Aluminium, anodized
Operat. Temperature:- 40... 750 °F
Carrier Frame Material:Aluminium, anodized
Operat. Temperature:- 40... 750 °F
Protection:IP54
Roller Display RX (max. continuous length 18')
Roller Material:Ceramic
Display Glass:Borosilicate glass
Carrier Frame Material:Aluminium, anodized
Operat. Temperature:- 40... 750 °F
Protection:IP54
Ball Display - Model KP (max. continuous length 12.5')
Ball Material:Ultramid
Sight Tube:Plexiglas
Sealing Plug:Aluminum
Seal:Perbunan
Ball Support Rail:Aluminum, anodized
Carrier Frame:304 stainless steel
Scale:Hard-PVC, 304 stainless steel (Option MV)
Operat. Temperature:- 4 ... 175 °F
Protection:IP 66
Ball Display - Model KM (max. continuous length 9.8')
Ball Material:Ultramid B
Sight Tube:Makrolon
Sealing Plug:Aluminum
Seal:FKM
Ball Support Rail:Aluminum, anodized
Carrier Frame:304 stainless steel
Scale:Hard-PVC, 304 stainless steel (Option MV)
Operat. Temperature:- 75 ...250 °F
Protection:IP 66
Ball Display - Model KF (max. continuous length 12.5')
Filling:Silicone oil
Ball Material:Ultramid B
Sight Tube:Makrolon
Sealing Plug:304 stainless steel
Seal:FKM
Ball Support Rail:Aluminum, anodized
Carrier Frame:304 stainless steel
Scale:Hard-PVC, 304 stainless steel (Option MV)
Operat. Temperature:-155...250 °F
Protection:IP 66
Ball Display - Model KG (max. continuous length 9.8')
Material Ball:Ultramid B
Sight Tube:Borosilicate glass
Sealing Plug:304 stainless steel
Seal:FKM
Ball Support Rail:Aluminum, anodized
Carrier Frame:304 stainless steel
Scale:304 stainless steel
Operat. Temperature:-4... 390 °F
Protection:IP 66

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