Meder Electronic MK12 Series Reed Sensors with Screw Fastening Mounting Holes DESCRIPTION MK12 sensors are magnetically operated Reed Sensors designed for screw mounting. The larger casing permits the use of higher rated switches. The sensor should be mounted on a fixed surface with the actuating magnet on the moving surface. Introduction or removal of the magnetic field determines the closing and opening of the Reed Switch. APPLICATIONS • Position and limit switch Pneumatic or hydraulic actuator position • End motion detection for linear drive Indication and end travel limit switch • Machine industry End motion detection and door/flap control 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 switch terminations and cable lengths are available DIMENSIONS All dimensions in mm [inches] www.willow.co.uk Tel. +44 (0) 1342 835234 Fax. +44 (0) 1342 834306 MK12 Series Meder Electronic Reed Sensors with Screw Fastening Mounting Holes ORDER INFORMATION Part Number Example SERIES CONTACT FORM SWITCH MODEL MAGNETIC SENSITIVITY CABLE LENGTH (mm) TERMINATION MK12 - XX XX X - XXX X 71 B, C, D, E 81 A 500 * W, X, Y 1 Form A OPTIONS 84 1 Form B 1 Form C MK12 - 1A71 C - 500 1A is the contact form 71 is the switch model C is the magnetic sensitivity 500 is the cable length (mm) W is the termination C, D, E 90 * Other cable lengths available. MAGNETIC SENSITIVITY SENSITIVITY CLASS PULL IN AT RANGE A 5 - 10 B 10 - 15 C 15 - 20 D 20 - 25 E 25 - 30 TERMINATION For wire and termination details please consult factory. Form C version requires 3 conductors. www.willow.co.uk Tel. +44 (0) 1342 835234 W Fax. +44 (0) 1342 834306 Meder Electronic MK12 Series Reed Sensors with Screw Fastening Mounting Holes CONTACT DATA Switch Model --> Contact Form --> All data at 20 0 C Contact Ratings Conditions Contact 71 Form A Min. Typ. Max. Contact 81 Form A Min. Typ. Max. Units Contact Rating Any DC combination of V & A not to exceed their individual max.'s 10 5 W Switching Voltage DC or peak AC 200 90 V Switching Current DC or peak AC 0.5 0.5 A Carry Current DC or peak AC 1.25 1.0 A Static Contact Resistance w/ 0.5V & 10mA 150 200 mΩ Dynamic Contact Resistance Measured w/ 0.5V & 50mA 1.5 ms after closure 200 200 mΩ Insulation Resistance across Contacts 100 Volts applied 1010 * 109 Ω Breakdown Voltage across Contacts Voltage applied for 60 sec. min. 225 * 100 VDC Operate Time, incl. Bounce Measured w/ 100% overdrive 0.5 0.5 ms Release Time Measured w/ no coil suppression 0.1 0.1 ms Capacitance @ 10kHz across contact 0.2 0.2 pF Contact Operation ** Must Operate Condition Steady state field 10 30 5 10 AT Must Release Condition Steady state field 4 27 2 9 AT Environmental Data Shock Resistance 1/2 sine wave duration 11ms 50 30 g Vibration Resistance From 10 - 2000 Hz 20 10 g Ambient Temperature 10 0 C/ minute max. allowable Storage Temperature Soldering Temperature 0 10 C/ minute max. allowable -20 -35 5 sec. dwell 85 85 -20 -35 260 85 0 C 85 0 C 260 0 C Please note: The indicated electrical data are maximum values and can vary downwards when using a more sensitive switch. * Insulation resistance of 1012 and breakdown voltage of 480 VDC is available. ** These ranges refer to the uncut / unmodified Reed Switches described in our Reed Switch section. Consult factory if more detail is required. www.willow.co.uk Tel. +44 (0) 1342 835234 Fax. +44 (0) 1342 834306 MK12 Series Meder Electronic Reed Sensors with Screw Fastening Mounting Holes CONTACT DATA Switch Model --> Contact Form --> All data at 20 0 C Contact Ratings Conditions Contact 84 Form A Min. Typ. Max. Contact 90 Form B / C Min. Typ. Max. Units Contact Rating Any DC combination of V & A not to exceed their individual max.'s 10 3 W Switching Voltage DC or peak AC 400 175 V Switching Current DC or peak AC 0.5 0.25 A Carry Current DC or peak AC 1.0 1.2 A Static Contact Resistance w/ 0.5V & 10mA 150 150 mΩ Dynamic Contact Resistance Measured w/ 0.5V & 50mA 1.5 ms after closure 200 250 mΩ Insulation Resistance across Contacts 100 Volts applied 1011 109 Ω Breakdown Voltage across Contacts Voltage applied for 60 sec. min. 700 200 VDC Operate Time, incl. Bounce Measured w/ 100% overdrive 2.0 0.7 ms Reset Time Measured w/ no coil suppression 0.1 1.5 ms Capacitance @ 10kHz across contact 0.7 1.0 pF Contact Operation ** Must Operate Condition Steady state field 15 30 10 35 AT Must Reset Condition Steady state field 6 27 4 30 AT Environmental Data Shock Resistance 1/2 sine wave duration 11ms 50 50 g Vibration Resistance From 10 - 2000 Hz 20 20 g Ambient Temperature 10 0 C/ minute max. allowable 0 Storage Temperature 10 C/ minute max. allowable Soldering Temperature -20 -35 5 sec. dwell 85 85 -20 -35 260 85 0 85 0 260 0 C C C 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. www.willow.co.uk Tel. +44 (0) 1342 835234 Fax. +44 (0) 1342 834306