Mazurczak NT Series Installation And Operation Instruction

Installation and Operating Instructions for
Rod-Type Level Probe NT
The rod-type level probe NT measures the temperature of the liquid
with a Pt 100 temperature sensor (DIN EN 60751) and the level of
the liquid by means of conductive level measurements.
The level probes NT are only designed for commercial and
industrial use.
Do not use them in inflammable or explosive fluids.
In order to ensure correct and reliable operation, the following must
be observed:
1. Electrical Safety
The probe may be connected only
by a suitably trained electrician!
The probes may be used only together
with a suitable electronic controller.
Maximum probe voltage: 20 V ~ (AC).
In the case of inductively or capacitively
coupled interference on the control
cable, we recommend that you use
screened cables. The screen may be
connected to ground only at one end of
the cable.
Types NT.../BC-...
The terminal casing BC is opened and closed with the mounting
wrench SB. For terminal casing BC, ensure that the pull relief, the
pressure screw for the cable gland and the cover screws are correctly
tightened upon assembly. Tighten the terminal casing cover until the
cover makes a positive connection with the cable gland. This ensures
optimum sealing of the casing.
Types NT.../LC-...
The mounting wrench SL (accessory) is used for opening and closing
the terminal casing LC. Take care that the pull-relief, the pressure
screw and the cover are tightened securely. Tighten the terminal
casing cover until the cover makes a positive connection with the
cable gland. This ensures optimum sealing of the casing.
If you install your own cables, you must remove the white plastic
insert below the pull-relief clamp when installing cables with a
diameter of >8 mm (maximum cable diameter: 9.5 mm).
The sealing insert for the cable gland must be selected from the
following table. If replacement inserts are needed, they can be
ordered as accessories.
Connection diagram
2. Operating Conditions
The materials of the rod-type level probe and the temperature sensor
must be chemically resistant to the liquid to be monitored and must
be able to withstand the temperature of the liquid.
The ambient temperature at the terminal housing may not exceed
50 °C. Neither the terminal housing nor the cable may be immersed
in the liquid.
The probe may be used with reservations in liquids with a tendency
to form crystals or encrustation..
Rod-type level probes made of metal may, if necessary, be cut to the
required length by the user.
Universal rod-type probes made of PTFE may not be shortened.
Operating temperatures
•
•
•
Original operating manual
Cable entry Cable-
[mm]
Terminal casing 4 – 6,5
BC 6,5 – 9,5
Terminal casing 4 – 6,5
LC 6,5 – 9,5
For metallic probe rods with PO sheath (black): 70 °C
For metallic probe rods with PTFE sheath (translucent): 90 °C
For probe rods sheathed with PTFE (white): 100 °C
WG 36/09.12/
E-MBA 322b
Sealing insert Article number
Colour (accessory)
yellow 1702200001
black 1702500001
yellow 4921000053
black 4921000050