Kobold Bypass Level Indicator, NBK-M
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NBK-M Mini Bypass Level Indicator

Brand: KOBOLD Instruments, Inc
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Kobold bypass level indicators are used for continuous measurement, display and monitoring of liquid levels. The bypass tube is attached onto the side wall of the vessel. According to the law of communicating tubes the level in the bypass tube equals the level in the vessel.
 
A float with embedded circular magnets in the bypass tube follows the liquid level and transfers it in a  non-contacting manner to a display fitted outside the tube or to a monitoring device.

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Specifications

Brand

Accuracy

  • ± 0.039” (± 1 mm)

Ambient Temperature Range

  • -20° to 145° C (-4° to 293° F)

Applications

  • Mixing Vessels
  • Storage Tanks
  • Tank Level Measurement
  • Water Tanks

Approvals & Certifications

  • CE
  • EN 1092-1

Cable Length

  • 10 feet (3 metres)

Electrical Connectors

  • PVC Cable

Electrical Contacts

  • Bistable Changeover Contact

Enclosure / Body Material

  • Aluminum Pressure-Cast
  • Polycarbonate

Environmental Protection

  • IP54
  • IP65
  • IP67

Flange Size - 1” (DN 25)

  • 1” (DN 25) - ANSI Class 150
  • 1” (DN 25) - ANSI Class 300
  • 1” (DN 25) - PN 16
  • 1” (DN 25) - PN 40
  • 1” (DN 25) - PN 6

Flange Size - 1/2” (DN 15)

  • 1/2” (DN 15) - ANSI Class 150
  • 1/2” (DN 15) - ANSI Class 300
  • 1/2” (DN 15) - PN 16
  • 1/2” (DN 15) - PN 40
  • 1/2” (DN 15) - PN 6

Flange Size - 3/4” (DN 20)

  • 3/4” (DN 20) - ANSI Class 150
  • 3/4” (DN 20) - ANSI Class 300
  • 3/4” (DN 20) - PN 16
  • 3/4” (DN 20) - PN 40
  • 3/4” (DN 20) - PN 6

Flange Size - 3/8” (DN 10)

  • 3/8” (DN 10) - ANSI Class 150
  • 3/8” (DN 10) - ANSI Class 300
  • 3/8” (DN 10) - PN 16
  • 3/8” (DN 10) - PN 40
  • 3/8” (DN 10) - PN 6

Hysteresis

  • 0.59” (15 mm)

Input

  • Maximum

Length

  • Maximum

Materials of Construction

  • 316Ti Stainless Steel
  • Titanium

Maximum System Pressure

  • psi: 580.2 (kPa: 4,000, bar: 40)

O-Ring Material

  • NBR

Operating Temperature

  • -20° to 120° C (-4° to 248° F) - PP Rollers
  • -20° to 200° C (-4° to 392° F) - Ceramic Rollers

Output

  • 4-20 mA

Output Format

  • Analog Output

Output Load

  • 9 V, 0.02 A
  • Maximum

Power Requirement

  • 1 A - Max.
  • 230 Vac/Vdc - Max.
  • 250 Vac/dc - Max.
  • 60 W/VA - Max.
  • 80 VA - Max.

Pressure Range

  • psi: 63.82 to 541 (kPa: 440 to 3,730, bar: 4.4 to 37.3)

Resistance

  • 100 milliohms
  • Approximately 5 kiloohms - Total Resistance

Resolution

  • 0.39” (10 mm), ML 2,000 mm

Sensor / Probe Connection

  • 4-Wire

Supply Voltage

  • 16-32 Vdc - Auxiliary Energy
  • Maximum

Temperature Range

  • -20° to 200° C (-4° to 392° F)

Tube Connection

  • Ø 1.57” (Ø 40 mm) - Bypass Tube

Documentation

Data Sheets

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