EXNB17ATEX0003X ♦mra1053a0600h_09 ♦1/2
NIVOPOINT
Manufacturer
H-1043 Budapest, Dugonics u. 11.
Phone: (36-1) 889-0100 Fax: (36-1) 889-0200
NIVELCO Process Control Co.
E-mail: sales@nivelco.com www.nivelco.com
Thank you for choosing a NIVELCO instrument.
We are sure that you will be satisfied throughout its use.
1. APPLICATION
The interaction of the magnetic float and the reed relays (incorporated in the protection tube) is the basis of
the NIVOPOINT magnetic float level switch series operation. They are suitable for level indication of normal
and explosive liquids, and can be used for level control tasks. The protecting tube contains a max. of 5
relays. Parts of the instrument are: probe tube with magnetic float and housing containing the connection
terminal.
The magnetic float moves alongside the protection tube tracking the level of the liquid and activating the reed
relays. As the float passes a relay it changes the output state of the relay which retains this state latching
until the level decreases and the float moves again along the respective relay to switch its state back.
2. TECHNICAL DATA
2.1. GENERAL DATA
TYPE MR – MP–
MR
-7
Ex
MR
-8
Ex
Insertion length 0.25 m ... 3 m
Material of wetted parts Stainless steel
(1.4571 / BS 316Ti)
PVDF float / PFA coated
probe
Stainless steel
(DIN 1.4571 / BS 316Ti)
Max. process pressure 2.5 MPa (25 bar) at +20 °C 0.3 MPa (3 bar) at +20 °C 2.5 MPa (25 bar) at +20 °C
Medium density min. 0.8
kg/dm3
min. 0.5
kg/dm3
min. 0.7
kg/dm3
min. 0.8
kg/dm3
Nominal float
dimensions / shape
∅52x59mm*
cylinder
∅96 mm*
ball
∅76x87 mm
cylinder
∅52x59 mm
cylinder
Medium temp. range -40 °C ... +150 °C -40 °C ... +80 °C See temperature classes table
Ambient temp. range -40 °C ... +95 °C -40 °C ... +95 °C
Output 1 ... 5 pcs reed-switches, connecting one side of each, NO/NC
Switching rate 120 W / VA, 250 V AC/DC, 3 A /reed relay, max. 9 A
Switch differential < 10 mm
Distance of switches min. 110 mm
Electrical connection M20 x 1.5 for cables ∅6 … ∅12
M20 x 1.5
for cables
∅9.5 … ∅10
without cable
gland
terminal, wire cross section: 0.5 … 2.5 mm2
Process connection 1", 1½", 2" BSP
1", 1½", 2" NPT
PP flange
DN 80, DN 100
1", 1½", 2" BSP
1", 1½", 2" NPT
Sealing material Klingerit 400 — Klingerit 400
Electrical protection Class I, Protecting cable 4 mm2
Ingress protection IP67 (as per EN 60529:2015)
Ex marking
II 2 G Ex d IIC T6 … T3 Gb
Dimension of the hous. 116 x 80 x 65 mm 124 x 80 x 65 mm
Mass 0.4 kg + 0.3 kg/fm 0.45 kg + 0.3 kg/fm
* dimensions of the float depend on the order
Note: the device must be installed with Ex d IIC certified explosion-proof cable gland.
2.2. ADDITIONAL DATA FOR EX APPROVED MODELS
CLASS T6 T5 T4 T3
Max. ambient temperature from –40 °C +65 °C +80°C +95 °C +95 °C
Max. medium temperature from –40 °C +80°C +95 °C +130 °C +150 °C
2.3. ACCESSORIES
−User’s Manual
−Certificate of Warranty
−Declaration of Conformity
−1 pc Gasket (for threaded versions)
2.4. ORDER CODE
NIVOPOINT M
***
TYPE CODE PROCESS CONNECTION CODE SWITCH POINT CODE LENGTH CODE LENGTH CODE FLOAT
EXCODE
Standard R 1” BSP
1 pc. NO/NC 10 m 00 m 0 *** / normal 3
Standard / plastic
coating and float P 2” BSP C2 pcs. NO/NC 21 m 10.1 m 1 ∅52
1.4571 / Ex 7
1” NPT D3 pcs. NO/NC 32 m 2::
2” NPT G 4 pcs. NO/NC 4 3 m 3 0.8 m 8 ∅52
8
1½" BSP B5 pcs. NO/NC 50.9 m 9 1.4571 / Ex
Notes: 1½" NPT E without
cable gland
** The order code of an Ex version should end in ’Ex’ *** Depends on the order: ∅52 / 1.4571, ∅96 /1.4571 MP version: ∅76 / PVDF
