MK11 Series

Magnetically operated Reed Sensors with screw thread enclosure

Characteristics

MK11 sensors are magnetically operated Reed Sensors with screw thread enclosure supplied with interconnect cable. The sensor should be mounted on a fixed surface with the actuating magnet on the moving surface. The sensor and magnet must be fixed in a definite distance to each other. The sensor is mostly operated from the front; approximation resp. removal of the magnet determines the closing or opening of the Reed Switch. The magnetic pull-in / drop-out sensitivity is divided into five AT ranges. A choice of switches, termination options and cable lengths is offered

Applications

Piston end travel and position detection

End motion detection for linear drives

Machinery industry

Dimensions

Tolerance +/- 0.10mm (0.004 inch)

Dimension Drawing

Termination

The standard termination is a two-wire flat cable with a cross section of 2 x 0.14mm². The standard length of the cable is 500mm. Other lengths can be supplied on request. The required length has to be stated in the part number. The cable end can be supplied with the following connection styles (please note after the length in the part number).

W		Cable end cut, dismantled on 30 mm, cores stripped and tinned on 5 mm
X		Individual crimped terminals 1mm(0.04inch) diameter
Y		Individual spade terminals, 2.8 x 0.8mm(0.11 x 0.03inch)
Z		“MASCON” sleeve suitable for pcb connector with 2.54mm(0.1inch) pitch

Contact Data

Contact type			71	72	81
Contact form			A/dry	A/dry	A/dry
Rated Power	max.	(W)	10	15	5
Switching voltage	max.	(VDC)	180¹	200	90
Switching current	max.	(A)	0.5	1.0	0.5
Carry current		(A)	1.0²	1.25	1.0
Contact resistance	max.	(mOhm)	150	150	200
Breakdown voltage (contact/contact)	min.	(VDC)	210³	250⁴	100
Operating time incl. bounce		(ms)	0.5	0.5	0.5
Releasing time		(ms)	0.1	0.1	0.1
Operating temperature		(°C)	-20/+85	-20/+85	-20/+85
Storage temperature		(°C)	-35/+85	-35/+85	-35/+85

Range D and E: 200 VDC ²Range D and E: 1.75 A ³Range D: 280 VDC; Range E: 310 VDC ⁴Range E: 320 VDC

Other switches by request.

Magnetic Sensitivity

Sensitivity class	A	B	C	D	E
Pull-in AT range	5-10	10-15	15-20	20-25	25-30
Available switches	81	71/72

This data relates to unmodified Reed switches before mounting. Please refer to the respective single data sheets for sensitivity data and measurement methods for finished assemblies.

Order information

Ordering example

MK11 – 1A71 C – 500 W

MK11 Reed Sensor, 1 form A switch type 71, Sensitivity class C, Cable length 500mm, Termination W