NIVELCO NIVOMAG MK-21 Series User Manual

Thank you for choosing a NIVELCO instrument.
We are sure that you will be satisfied throughout its use.
1. APPLICATION
The NIVOMAG MK-200 series magnetic float level switches are used for level point detection of liquids in all type of
vessels.
Operation without external power, side or top mounting, wide temperature ranges, various process connections, stainless
steel wetted parts and Ex versions make it applicable in the industrial chemistry, pharmacy, petrol industry etc. Permanent
magnet operated by the movement of a float will activate an other magnet inside the switching enclosure. This second
magnet operates a special switch. So the movement of float is transferred to the potted switch through separated magnetic
coupling ensuring the requirements of the wet process and Ex application. Special balancing construction and various
accessories (see figures of DIMENSIONS) give wide range of possibility of the installation.
2. TECHNICAL DATA
2.1 G
ENERAL SPECIFICATION
T
YPE
MK -21 -
Nominal Pressure max.
Liquid temperature
Ambient temperature
Liquid density
Switch differential
Protrusion length
Material of vetted parts
Housing material
Switch action
Switch rating
Electrical connection
Mechanical protection
Electrical protection
Ex protection mark
Weight (approx)
* depending on type of cable gland
2.2 S
PECIAL DATA
T
EMPERATURE
C T6 T5
LASS
Liquid
+80 °C +95 °C
temperature
-20 °C ... -20 °C ...
Ambient
+60 °C +70 °C
temperature
2.3. A
CCESSORIES
−
User's Manual, Warranty Card, Declaration of conformity
2.4 O C
RDER ODE
V
ERSION
Normal
Normal + rubber cup
Normal + silicon rubber cup
Under water
Under water + rubber cup
Under water + silicon rub. cup
COUNTER FLANGE
NIVOMAG
M
ATERIAL
C steel
SS 316 Ti
P . .
ROC CONNECT
92 x 92 PN 25
92 x 92 PN 25 for tester
92 x 92 PN 25 Counter fl. spec.
92 x 92 PN 25 Counter flange spec.for tester
H F
ORIZONTAL LOAT
MK -22 - MKG-2
2.5 MPa (MKU: 0.2 MPa / 2.5 MPa)
see temperature diagram
0°C to 100°C
-20 °C ... +80 °C, Ex version see table below
3
min 0.7 kg/dm ... 0.85 kg/dm
Fixed Adjustable Fixed
See figures below
SS316Ti (MKG: rubber MKS silicon rubber)
Paint coated aluminium
1 micro-switch with 1 closing and 1 opening contact (NO and NC)
250 V AC12 10 A; 220 V DC13 0.6 A – Ex:250V AC12 2.5A; 220V DC13 0.3 A
1 x Pg 16 or M20 x 1.5 for cable diameter 6 to 15 mm*
2
with 5 x 2.5 mm wire cross section (MKU: integrated cable)
IP 65 (MKU: IP 68 max 20 m water depth)
Class I.
II 1/2 G Ex d e mb IIC T6 ... T2 Ga/Gb
2.5 kg
T4 T3
+130 °C +200 °C +250 °C
-20 °C ... -20 °C ... -20 °C ...
+80 °C +80 °C +80 °C
NIVOMAG M K
C F
ODE UNCTION
A
Constant hysteresis
G
Adjustable hysteresis
S
Adjustable hysteresis vertical float
U
V
Z
M F F – 1 – 0
C
ODE
1
2
C
ODE
0
1
2
3
V
ERTICAL
F
LOAT
- MKS-2 - MK -23 -
1.6 MPa
s. temp.diagr.
0°C to 200°C
3
see table
Fixed Adjustable
Medium [°C]
T2 250
T3 200
T2
T4
130
T5 100
80
T6
MKU
20 -12 60 70 80
Ambient
-20
[°C]
-50
– 2 / 3 – Ex
C P
ODE ROCESS CONNECTION
1
92 x 92 flange
2
DN 80 PN 25 C steel
3
DN 100 PN 25 C steel
DN 125 PN 25 C steel
DN 150 PN 25 C steel
DN 80 PN 25 SS 316 Ti
DN 100 PN 25 SS 316 Ti
DN 125 PN 25 SS 316 Ti
DN 150 PN 25 SS 316 Ti
2" BSP
2" NPT
TESTER
NIVOMAG M M K – 1
M C
ATERIAL ODE
1
C steel
2
SS 316 Ti
NIVOMAG
NIVELCO Process Control Co.
H-1043 Budapest, Dugonics u. 11.
Phone: (36-1) 889-0100
E-mail: sales@nivelco.com
A . . M
RM L INIMAL DENSITY OF LIQUID
(mm)
F
LOAT
0 ... 100
(mm)
52 0.7
64 0.7
120 –
C A .
ODE RM LENGTH
0
0 mm
1
100 mm
2
200 mm
3
300 mm
4
Z or L arm
5
0 mm
6
100 mm
7
200 mm
8
300 mm
B
Z or L arm
N
MK-23
A .
RM LENGTH
0 – 0
1000 mm
2000 mm
3000 mm
1000 mm
2000 mm
3000 mm
BKI 16 ATEX 0013X ♦ mka2100a0600h_10 ♦ 1/2
Manufacturer:
Fax: (36-1) 889-0200
www.nivelco.com
3
(kg/dm )
200 300 1000 ... 3000
0.8 0.85 –
0.8 0.8 –
– – 0.7
C
ODE
0
1
2
3
4
9
5
6
7
8
C
ODE
1
2
3
5
6
7