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NBK-10 ATEX Bypass Level Indicator
Brand: KOBOLD Instruments, Inc
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.
Features- Measuring length: Single-part maximum 5,500 mm, over 5,500 mm two part or multipart
- Pressure: maximum PN 100 / Class 600
- Temperature: -40° to 400° C (Ceramic rollers), 0° to 120° C (PP-rollers)
- Viscosity: maximum 200 mm²/s standard (Option: 460 mm²/s, only NBK-03)
- Connection: DIN flange DN15 to DN50, ANSI flange 1/2" to 2", R and NPT threads, Welding nipple DN15 to DN32
- Material: stainless steel 1.4571
- Insensitive magnet roller without auxiliary energy
- Limit contacts
- Analog output, HART®, Profibus® PA, Foundation Fieldbus
Specifications
Brand
Ambient Temperature Range
- -40° to 145° C (-40° to 293° F)
Applications
- Agitator Vessel
- Storage Tanks
- Tanks on Ships
- Water Tanks
Approvals & Certifications
- ATEX Ex II 1 GD Ex ia IIC T6 Ga
- ATEX Ex II 1/2 G Exd IIC T6 Ga/Gb
- ATEX Ex II 1/2D Ex Tb IIIC T85° C Da/Db
- ATEX Ex II 2 G Ex Mb IIC T5/T6 Gb
- ATEX Ex II 2D Ex Mb IIIC IP67 T 105° C Db
BSP Connection
- 1” BSPT
- 1/2” BSPT
- 1-1/4” BSPT
- 3/4” BSPT
Burn-Out
- Downscale (NAMUR NE43) - 3.5 mA
- Up Scale (NAMUR NE43) - 23 mA
Cable Length
- 9.84 feet (3 metres)
Cable Material
- PVC
Communication
- FOUNDATION Fieldbus ITK 4.6
- HART
- Loop Link 5905A
- PROFIBUS PA (EN 50170)
Consumption
- < 11 mA
Dimensions
- Ø 1.73” x 0.80” (Ø 44 x 20.2 mm)
Display
- LCD Display
- LED Display
Drain, Vent Valves & Plug
- 316 Titanium Stainless Steel, 1.4571
Electrical Connectors
- Cable Gland
- M20 x 1.5
Electrical Contacts
- Bistable Changeover Contact
Electrical Rating
- 24 V / 1.2 W
- 30 Vac/dc / 100 mA / 1.2 W
Enclosure, Body Material
- Cast Aluminum
- Cast Metal
Environmental Protection
- Explosion-proof: II 1/2 G Ex d IIC T6 Ga/Gb
- IP54
- IP65
- IP66
- IP67
Flange Size - 1-1/2” (DN 40)
- 1-1/2” (DN 40) - 600# ASME
- 1-1/2” (DN 40) - PN 100
Flange Size - 1-1/4” (DN 32)
- 1-1/4” (DN 32) - 600# ASME
- 1-1/4” (DN 32) - PN 100
Flange Size - 1” (DN 25)
- 1” (DN 25) - 600# ASME
- 1” (DN 25) - PN 100
Flange Size - 1/2” (DN 15)
- 1/2” (DN 15) - 600# ASME
- 1/2” (DN 15) - PN 100
Flange Size - 2” (DN 50)
- 2” (DN 50) - 600# ASME
- 2” (DN 50) - PN 100
Flange Size - 3/4” (DN 20)
- 3/4” (DN 20) - 600# ASME
- 3/4” (DN 20) - PN 100
Gasket Material
- Reinforced Graphite - Flat Gasket
Hysteresis
- 0.59” (15 mm) Approximately
Isolation
- 1.5 kVac / 50 Vac
Length
- 216.5” (5,500 mm) - Max.
Loop Resistance
- < 20 milliohms
Materials of Construction
- 316Ti Stainless Steel - Bypass Tube
- Anodized Aluminum (Brown) - Carrier Frame
- Borosilicate Glass - Display
- Ceramic - Material Roller
- Plexiglass - Display
- Polypropylene - Material Roller
NPT Connection
- 1” NPT Female
- 1/2” NPT Female
- 1-1/4” NPT Female
- 3/4” NPT Female
Operating Pressure
- psi: 0 to 1,450 (kPa: 0 to 10,000, bar: 0 to 100)
Operating Temperature
- -40° to 400° C (-40° to 750° F)
Operating Voltages
- 15 Vdc, Max.
- 30 Vac/dc, Max.
Output
- 4-20 mA
Output Noise
- 60 dB Min. - Signal to Noise Ratio
Power Requirement
- 8-35 Vdc
- Loop Powered
Process Temperature
- -104° to 200° C (-155° to 392° F)
Resistance
- 0 to 10,000 ohms - Linear Resistence Input
Resolution
- 0.39” (10 mm)
Response Time
- 1 to 60 seconds
Sensor, Probe Type
- NAMUR Sensor
Switch Type
- Transistor: Normally Open, Bistable
Update Time
- 135 milliseconds
Voltage Drop
- 2.5 V, Max.
- 3.3 V at 4 mA - LED
- 3.7 V at 20 mA - LED
