MK7 Series
Cylindrical Reed Sensors
with M8 Thread
MEDER electronic
DESCRIPTION
APPLICATIONS
•
Position and limit switch
Pneumatic or hydraulic actuator position
Indication and end travel limit switch
•
Door and window contacts
Security system applications
•
Level sensor
Use with magnetic floats for water level
detection in coffee makers, washing
machines or dishwashers
MK7 sensors are magnetically operated Reed
proximity switches in a cylindrical form with an 8
mm x 0.75 thread and connecting cable or coupler.
The sensor can be screwed directly onto a fixed
surface with the actuating magnet on the moving
surface. The widespread termination “T” or “U” makes
the MK7 series compatible with several inductive and
magnetic proximity sensors.
FEATURES
•
Form A, B, and C available
•
High power switches available
•
Other cables, connectors and colors available
•
Various case sizes available
•
Five operate sensitivities available
•
A choice of cable terminations and lengths are
available
DIMENSIONS
All dimensions in mm [inches]
182
Germany # ++49-(0)7733-94870, USA # 800-870-5385
www.meder.com
MEDER electronic
MK7 Series
Cylindrical Reed Sensors
with M8 Thread
ORDER INFORMATION
Part Number Example
MK7 - 1A66 C - 500
W
SERIES
MK 7 -
MK7/1 -
CONTACT
FORM
XX
SWITCH
MODEL
XX
66
1 Form A
Optionen
51**
1 Form B
1 Form C
C, D, E
90
81
MAGNETIC
SENSITIVITY
X -
B, C, D, E
A
500*
W, X, Y, T, U
CABLE
LENGTH
(mm)
XXX
TERMINATION
X
1A
is the contact form
66
is the switch model
C
is the magnetic sensitivity
500
is the cable length (mm)
W
is the termination
* Other cable length available.
** Not available in combination with MK7/1 serie.
MAGNETIC SENSITIVITY
SENSITIVITY
CLASS
PULL IN
AT RANGE
A
B
C
D
E
5 - 10
10 - 15
15 - 20
20 - 25
25 - 30
TERMINATION
For wire and termination details please consult factory.
Form C version requires 3 conductors.
W
X
Y
T
U
The cable cut length includes: 30 mm of separated
wire with 5 mm of wire stripped and tinned
The cable cut length includes: 30 mm of separated
wire with individual crimped terminals
The cable cut length includes: 30 mm of separated
wire with individual crimped terminals
Standard click sensor-connector (3 pole, M8)
mounted directly in casing
Cable with click sensor-connector (3 pole, M8)
Germany # ++49-(0)7733-94870, USA # 800-870-5385
www.meder.com
183
MK7 Series
Cylindrical Reed Sensors
with M8 Thread
MEDER electronic
CONTACT DATA
All data at 20° C
Contact Ratings
Switch Model -->
Contact For m -->
Conditions
Any DC combination of V
& A not to exceed their
individual max`s.
DC oder peak AC
DC oder peak AC
DC oder peak AC
w / 0.5 V & 10 mA
Measured w / 0.5 V & 50 mA
1.5 ms after cloure
100 Volt applied
10
11
Switch 51
For m A
Min.
Typ.
Max.
Switch 66
For m A
Min.
Typ.
Max.
Units
Switching Power
12
10
W
Switching Voltage
Switching Current
Carry Current
Static Contact Resistance
Dynamic Contact Resistance
Insulation Resistance across
Contacts
Breakdown Voltage across
Contacts
Operate Time, incl. Bounce
Release Time
Capacitance
250
0.5
1.5
150
200
200
0.5
1.25
150
200
V
A
A
mΩ
mΩ
Ω
10
10
*
Voltage applied for 60 sec
Measured w / 100 % overdrive
Measured w / no coil
suppression
@ 10 kHz across contact
350
1.0
0.1
0.2
225 *
0.5
0.1
0.2
VDC
ms
ms
pF
Contact Operation **
Must Operate Condition
Must Release Conditon
Steady state field
Steady state field
15
6
30
27
10
4
30
27
AT
AT
Environmental Data
Shock Resistance
Vibration Resistance
Ambient Temperature
Storage Temperature
Soldering Temperature
½ sine wave duration 11 ms
From 10 - 2000 Hz
10°C/ minute max. allowable
10°C/ minute max. allowable
5 sec. dwell
-20
-35
50
20
85
85
260
-20
-35
50
20
85
85
260
g
g
0
C
C
C
0
0
Please note: The indicated electrical data are maximum values and can very downwards when using a more sensitive switch.
* Insulation resistance of 10
12
and breakdown voltage of 480 VDC is available.
** These ranges refer to the uncut / unmodified Reed Switches described in our Reed Switch sectio. Consult factory if more
detail is required.
184
Germany # ++49-(0)7733-94870, USA # 800-870-5385
www.meder.com
MEDER electronic
MK7 Series
Cylindrical Reed Sensors
with M8 Thread
CONTACT DATA
All data at 20
0
C
Contact Ratings
Switching Power
Switch Model -->
Contact For m -->
Conditions
Any DC combination of V & A
not to exceed their individual
max.'s
D C or peak A C
D C or peak A C
D C or peak A C
w/ 0.5V & 10mA
Measured w/ 0.5V & 50mA
1.5 ms after closure
100 Volts applied
Voltage applied for 60 sec.
min.
Measured w/ 100% overdrive
Measured w/ no coil
suppression
@ 10kHz across contact
10
9
Switch 81
For m A
Min.
T yp .
Max.
Switch 90
For m B / C
Min.
T yp .
Max.
Units
5
3
W
Switching Voltage
Switching Current
Carry Current
Static Contact Resistance
Dynamic Contact Resistance
Insulation Resistance across
Contacts
Breakdown Voltage across
Contacts
Operate Time, incl. Bounce
Reset Time
Capacitance
90
0.5
1.0
200
200
175
0.25
1.2
150
250
V
A
A
mΩ
mΩ
Ω
10
9
100
0.5
0.1
0.2
200
0.7
1.5
1.0
VD C
ms
ms
pF
Contact Operation **
Must Operate Condition
Must Reset Condition
Steady state field
Steady state field
5
2
10
9
15
6
30
27
AT
AT
Environmental Data
Shock Resistance
Vibration Resistance
Ambient Temperature
Storage Temperature
Soldering Temperature
1/2 sine wave duration 11ms
From 10 - 2000 Hz
10
0
C/ minute max. allowable
10
0
C/ minute max. allowable
5 sec. dwell
-20
-35
30
10
85
85
260
-20
-35
50
20
85
85
260
g
g
0
C
C
C
0
0
Please note: The indicated electrical data are maximum values and can vary downwards when using a more sensitive switch.
** These ranges refer to the uncut / unmodified Reed Switches described in our Reed Switch section. Consult factory if more
detail is required.
Germany # ++49-(0)7733-94870, USA # 800-870-5385
www.meder.com
185
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