Proximity Sensors Two-Piece Magnet Actuated Reed Proximity Switches

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Proximity Sensors Two-Piece Magnet Actuated Reed Proximity Switches

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Proximity Sensors Two-Piece Magnet Actuated Reed Proximity Switches
MODES OPERATION Short-axis Slide-by Operation reed switch sensing face magnet actuator's active face cross each other, parallel constant distance. Head-on Operation center lines magnet actuator reed switch remain constant. distance between parallel faces varied operate release reed switch.
20FR Series
Ferromagnetic Vane Operation reed switch's sensing face magnet's active face remain fixed position each other, distance established normal actuation short axis slide-by mode. ferromagnetic vane (larger dimension than switch and/or magnet) introduced ``de-actuator'' moves (and withdrawn from) between switch magnet.
FEATURES Internal reed switch, hermetically sealed contacts Industrially packaged aluminum housings Matching permanent magnet unit inch conduit outlet Meets portions NEMA enclosure Type general purpose; Type driptight; Type weather resistant; and, Type industrial Slide-by, head-on vane actuation Designed compatible with solid state logic level input requirements ORDER GUIDE
Units must ordered separately. Each includes mounting bracket hardware. Catalog Listings Unit Switch Type Magnet Switch Form (A)SPSTNO (A)SPSTNO (B)SPSTNC Wire Leads* 20FR1-6B 20FR3-6B 20FR5-6B 21FR1-B Heavy Duty Cable** 20FR2-6B 20FR4-6B 20FR6-6B 21FR1-B Max. Volts Electrical Ratings (Resistive) Max. Amps Max. Rating watts Watts
*Wire Leads: single gage stranded copper wire leads with insulation. **Heavy Duty Cable: Twin gage stranded copper conductor with heavy duty Type neoprene jacket resistant oil, moisture, sunlight, abrasion, aging. Note: (7,6 15,2m) lead lengths supplied. Contact your MICRO SWITCH sales office Authorized Distributor listings prices. longer lead lengths necessarily stock items.
APPLICATION PRECAUTIONS 21FR1-B magnet actuator should subjected influence strong magnetic field. Switch magnet package should subjected severe shock. When magnet exposed ferrous filings, loss sensitivity expected. suppression networks must used inductive circuits.
Honeywell MICRO SWITCH Sensing Control 1-800-537-6945
1-815-235-6847 International 1-800-737-3360 Canada
Proximity Sensors Two-Piece Magnet Actuated Reed Proximity Switches
ELECTRICAL LIFE
Listing 20FR1, 20FR2, 20FR5, 20FR6 20FR3, 20FR4 Operations Rated Load 10,000,000 500,000
20FR Series
TEMPERATURE RANGE -29° +93°C (-20° +200°F) effects temperature must taken into consideration when using magnetically operated switches. Increased operating release travel should allowed shown charts, insure proper operation under variable conditions. TEMPERATURE EFFECTS PERMANENT Ambient negative temperature changes cause irreversible reduction operate release sensitivity inherent characteristics permanent magnet materials. Initial exposure sub-zero temperature result given permanent loss sensitivity; however, repeated exposure down that temperature will cause additional change that permanent loss.
Initial Exposure Temperature -29°C (-20°F) Total Possible Sensitivity Loss 2,03mm (.080 max. 3,04mm (.120 max. 4,95mm (.195 max. 1,52mm (.060 max.
TEMPERATURE SENSITIVITY
20FR1 20FR2
OPERATE RELEASE POINTS Operate release points reed switch magnet actuator room temperature [24°C (75°F)] given. characteristics curve ranges include these variables: characteristics; tolerances variations reed switch geometry; strength symmetry variations magnetic field; assembly tolerances; and, load-life considerations. Reference points centers sensing active faces reed switch magnet, respectively. HEAD-ON MODE 24°C (75°F)
Sensitivity (nominal) Type 20FR1,2, 20FR3,4 Operate 61,0mm 22,9mm Release 76,2mm 40,6mm Hysteresis 15,2mm 17,8mm
20FR3 20FR4
Listing 20FR1 20FR2 20FR5 20FR6 20FR3 20FR4
Proximity
MOUNTING DIMENSIONS (For reference only)
20FR SENSOR
21FR1-B SENSOR
MOUNTING BRACKET
MOUNTING BRACKET
This mounting bracket supplied with each 20FR Series Switch
This mounting bracket supplied with each 21FR1-B magnet
Honeywell MICRO SWITCH Sensing Control 1-800-537-6945
1-815-235-6847 International 1-800-737-3360 Canada

Proximity Sensors Two-Piece Magnet Actuated Reed Proximity Switches

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