NIVOPOINT MR Series User Manual

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We are sure that you will be satisfied throughout its use.
APPLICATION
The NIVOPOINT MR series of magnetic float level switches are applicable for point level
switching (high or low) or for alarm (overfill, empty) in liquids.
In case of liquids containing metal particles protect the device by using a magnetic filter.

2. TECHNICAL DATA

Model
Probe length
Material of wetted parts
Max. process pressure
Medium density
Medium temperature range
Ambient temperature range
Output
Switching rate
Switch differential
Distance between switch points
Electrical connection
Process connection
Sealing material
Electrical protection
Mechanical protection
Dimension of the housing
Certificate for Ex versions
Weight
OPERATION
A magnetic float moving alongside the protection tube tracking
the level, is activating the reed relays incorporated the tube. After
passing of the float, the reed relays will retain their output state.
The device is capable of direct switching a load within its
specification.
INSTALLATION
The device should be mounted in vertical position via its process
connection and handled with care to avoid any damage or bend
of the protection tube during transportation or installation.
After fastening, the position of the cable gland can be rotated
±180° as well as the position of reed relays can be set ±25mm.
Both adjustments can be done by the switch point adjustment
gland, as follows:
– loosen the nut above the hexagon neck
– turn the housing as well as adjust the reed relays vertically to
the required position
– tighten the nut
Use a wrench at the hexagon neck to hold the device against
rotation while loosening and tightening the nut.
WARNING!
The switch point adjustment gland must not be
loosened in tanks under pressure.
MR _ _ _
0,25...3 m
Stainless steel DIN 1.4571 / BS 316Ti)
2,5 MPa (25 bar) (at 20°C)
min. 0,7g/cm
-40°C to +150°C
-40°C to +100°C
1 to 5 pcs. NO or NC reed relays
120 W / VA, 250 V AC, 3 A /reed relay, max. 9 A
< 10 mm
min. 110 mm
Screw terminals in housing with
Pg 16 for cables ∅7 to ∅14 mm
Wire cross section: 0,5 to 2,5 mm
1" or 2" BSP/NPT
Klingerit 400
Class I.
IP 65
110 x 80 x 65 mm
−
0.4 kg + 0.3 kg/m
MR _ _ _ Ex
3
Screw terminals in housing with
Pg 16 for cables ∅9,5 to∅10
2
160 x 80 x 65 mm
EEx d IIC T4-T6
0.45 kg + 0.3 kg/m
DIMENSIONS
Figure 1.: Dimensions of the standard version
USER'S MANUAL
Manufacturer:
NIVELCO Process Control Co
H-1043 Budapest, Dugonics u. 11.
Tel.: (36-1)-369-7575
E-mail: sales@nivelco.com http://www.nivelco.com
86
± 25mm (adjustment)
S=55 or 70
1" or 2"
Ø 52
Ø 12
Fax: (36-1)-369-8585
Pg16