Nivobob
®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000
gi130109
13
Continuous level measuring system
NB 3000
Technical information / Instruction manual
page G
Accessories
Extension cables
•
For connecting the Remote Box NB 9000
•
For wiring a Modbus network
•
Notes for choosing the right cable see chapter "Electrical Installation"
•
It is generally recommended to protect PVC signal cables from UV influence by installing them in a pipe or hose.
Shielded cable
Functionality upto 50m
Cross section 2x 0,34mm
2
(AWG22), common shield
Capacitance 140nF/km (between wires) / 150nF/km (wire to shield)
-30°C (-22°F) to 70°C (158°F), PVC (LiYCY)
Twisted pair cable
Functionality upto 1000m
Twisted pair instrument cable, common shield
Cross section 2x 0,34mm
2
(AWG22)
Impedance 120 Ohms
Capacitance 40nF/km
-40°C (-40°F) to 75°C (167°F), PVC
Protection hose
for installation of extension cables in ATEX Zone 21 available
Weather protection cover
If the unit is used outdoors, the use of the weather
protection cover is recommended. It protects the device
from all atmospheric influences such as
• rain water
• condensation water
• excessively high temperatures
• excessively low temperatures in winter
Material: PE, weather and temperature stable
For use in Hazardous Locations only permitted for Zone
22 or Division 2.
Mounting set
Sealings, screws and washers for fixing the unit on a
flange.
