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MK9151 Datasheet Preview

MK9151 Datasheet

Level sensing relay MK 9151 varimeter

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Monitoring technique
Level sensing relay MK 9151
varimeter
Function diagrams
Supply UH
0
Level / Niveau
MAX
11 - 14
COM X1 11 - 12
11 - 14
COM X1 11 - 12
t
t
1-point level control
Supply UH
0
Level / Niveau
MAX
MIN
11 - 14
COM X1 11 - 12
11 - 14
COM X1 11 - 12
t
t
2-point level control
Circuit diagrams
A1 11
MIN MAX COM
A2 X1 X2
11
tt
tt
M6620_d
tt
tt
M6621_f
According to IEC/EN 60 255, DIN VDE 0435-303
3 probe connections for 2-point and 1-point level control
Also for use as moisture detector
High interference resistance of the measuring circuit, which is
isolated from the mains
Max. wire length to the probes: 1500 m
Large setting range: 2 ... 450 k
this permits differentiation between fluid and foam
Adjustable response and release time delay: 0,2 ... 20 s
Programmable for open circuit operation (without bridge)
or closed circuit operation(bridge X1-X2 or X1-COM)
For auxiliary voltages of 24 ... 415 V AC or 24 V DC
Green LED for operation
Yellow LED for contact position
1 or 2 changeover contacts
Also available with sealable transparent cover
Available with safe separation according to IEC/EN 61 140,
IEC/EN 60 947-1
Width 22,5 mm
Approvals and marking
*
Canada / USA
* see variants
Application
Level monitoring and control for conductive liquids and powders,
e.g. maximum and minimum filling levels, overfilling and protection
against dry running
Monitoring and control of the mixing ratio of conductive liquids
General resistance monitoring tasks, e.g. limit temperature
detection with PTC
Indicators
green LED:
yellow LED:
on, when supply connected
on, when output relay active
Notes
All commercially available probes are suitable.
The reference probe for level measurement is generally located at the
lowest point of the container and must always be connected to the "COM"
terminal. The container itself can be used as a reference probe if it
consists of conductive material.
1-point level control (see Figure) is especially suitable for protection
against overfilling and dry running on containers with a free inlet/outlet.
In this configuration, all that is required besides the reference probe
"COM" is the "MAX", which must be located at the desired limit level. The
output relay switches over after the set delay time if the fluid level
exceeds or falls below the limit level, which permits fluid to be pumped
out or added.
A1 11 21
MIN MAX COM
A2 X1 COM 11
21
A1 MIN MAX COM
12 14
A1 MIN MAX 12 14 22 24
X1 X2
12 14 A2
MK 9151.11
M7659_a
22 24 X1
12 14 A2
MK 9151.12
M7660_a
All technical data in this list relate to the state at the moment of edition. We reserve the right
for technical improvements and changes at any time.
1
MK 9151 / 22.04.04 d




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MK9151 Datasheet Preview

MK9151 Datasheet

Level sensing relay MK 9151 varimeter

No Preview Available !

Technical data
Input
Setting range of the
fluid resistance:
2 ... 450 k
(other ranges on request)
Setting:
on logarithmically divided absolute scale
Switching point hysteresis: approx. 3 % (at 450 k) ... 6 %
(at 2 k) of the set value
Voltage and temperature
influence:
< 2 % of the set value
Max. cable length to the
probes:
Set value
Cable length
(at 100 nF/km)
450 k
50 m
100 k
200 m
35 k
500 m
10 k
1500 m
5 k
3000 m
Max. sensing voltage:
approx. AC 10 V
Max. sensing current:
approx. AC 1,5 mA
(internally generated)
Response and release times: 0,2 ... 20 s
Setting on logarithmically-divided
absolute scale
Auxiliary circuit
Auxiliary voltage UH:
AC 24, 42 ... 48, 110 ... 127,
220 ... 240, 380 ... 415 V
DC 24 V
Voltage range of UH
AC: 0,8 ... 1,1 UN
DC: 0,85 ... 1,25 UN
Nominal power consumption AC: approx. 2 VA
DC: approx. 1 W
Frequency range:
45 ... 400 Hz
Output
Contacts
MK 9151.11:
MK 9151.12:
Thermal current Ith:
Switching capacity
to AC 15
NO contact:
NC contact:
Electrical life
to AC 15 at 1 A, AC 230 V:
Permissible operating:
Short-circuit strength
max. fuse rating:
Mechanical life:
1 changeover contact
2 changeover contacts
5A
3 A / AC 230 V IEC/EN 60 947-5-1
1 A / AC 230 V IEC/EN 60 947-5-1
IEC/EN 60 947-5-1
5 x 105 switching cycles
6 000 switching cycles / h
4 A gL
IEC/EN 60 947-5-1
30 x 106 switching cycles
Technische Daten
Wire connection:
Wire fixing:
Mounting:
Weight:
Dimensions
2 x 1,5 mm2 solid or
2 x 1,0 mm2 stranded wire with sleeve
DIN 46 228-1/-2/-3/-4
Flat terminals with self-lifting
clamping piece
IEC/EN 60 999-1
DIN rail
IEC/EN 60 715
155 g
Width x height x depth:
22,5 x 82 x 99 mm
Standard type
MK 9151.11 2 ... 450 kAC 220 ... 240 V
Article number:
0044505
Output:
1 changeover contact
Measuring range:
2 ... 450 k
Auxiliary voltage U :
H
Width:
AC 220 ... 240 V
22,5 mm
stock item
Variants
MK 9151._ _/60
MK 9151. _ _ /001:
MK 9151. _ _ /002:
MK 9151. _ _ /400:
MK 9151. _ _ /106:
CSA approval
time delay on Min level
time delay on Max level
with sealable transparent cover
with save separation according
to VDE 0106
Ordering example for Variants
MK 9151 .12 /_ _ _ 2 ... 450 kAC 220 ... 240 V
Auxiliary voltage
Measuring range
Variant, if required
Contacts
Type
Accessories
OA 5640:
Applications
Standard probe
A1
Supply UH
A2
12 11 14
12 14
11
22 21 24
22 24
21
MIN MAX COM
X1
General data
Operating mode:
Temperature range:
Clearance and creepage
distances
overvoltage category /
contamination level
input/auxiliary circuit:
input/output circuit:
auxiliary/output circuit:
EMC
Electrostatic discharge:
HF irradiation:
Fast transients:
Surge voltages:
Interference suppression:
Degree of protection:
Housing:
Vibration resistance:
Climate resistance:
Terminal designation:
Continuous operation
- 20 ... + 60°C
6 kV / 2
6 kV / 2
4 kV / 2
IEC 60 664-1
(1 kV for DC 24 V-devices)
(4 kV for MK 9151.12)
8 kV (air)
IEC/EN 61 000-4-2
10 V / m
IEC/EN 61 000-4-3
2 kV
IEC/EN 61 000-4-4
1 kV
IEC/EN 61 000-4-5
Limit value class B
EN 55 011
Housing: IP 40
IEC/EN 60 529
Terminals: IP 20
IEC/EN 60 529
Thermoplastic with V0 behavior
according to UL subject 94
Amplitude 0,35 mm,
frequency 10 ... 55 Hz, IEC/EN 60 068-2-6
20 / 060 / 04
IEC/EN 60 068-1
EN 50 005
Level/Niveau
1-point level control
A1
Supply UH
A2
12 11 14
12 14
11
M6612
22 21 24
22 24
21
MIN MAX COM
X1
2-point level control
Level/Niveau
M6613
E. DOLD & SÖHNE KG • D-78114 Furtwangen • Postf. 1251 • Tel. +49 7723 654 0 • Telefax +49 7723 654 356
e-mail dold-relays@t-online.de • internet http://www.dold.com
2


Part Number MK9151
Description Level sensing relay MK 9151 varimeter
Maker Dold
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