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
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