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Sensing and Control
Honeywell Inc.
11 West Spring Street
Freeport, Illinois 61032
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32
ONE PART 15/32” PROXIMITY SENSOR
(INCORPORATING BUILT IN TEST
FUNCTION)
Description :
Environment-proof self-contained proximity sensor enclosed in a
rugged hermetically sealed ceramic/stainless steel housing, designed
to meet the requirements of aerospace applications.
Operation by the Eddy Current Killed Oscillator (ECKO) principle,
which is used to detect metallic objects passing in front of the sensing
face. Once a target metal is detected, a trigger signal is produced
which is then passed through the output conditioning circuitry to give
a high or low output, depending on the sensor application.
Features :
lAll metal sensing
lBuilt In Test function (BITE)
lHigh level EMC and lightning strike performance
lHigh level of electronics protection
lMean Time Between Failure >200K hours
Typical Applications :
lAircraft landing gear uplocks and downlocks
lAircraft weight-on-wheels
lAircraft arrestor hook
lFlight control surfaces
ZS-00426-01
Table 1
External wiring failure mode Proximity switch (as target conditioned) Proximity switch output status
Open input (28 Vdc) Ac tuated or deactua ted Deac tuate d ’ 0’ volts
Open input Actuated Actuated
(ground) Deactuated Deactuated
Open output Actuated Actuated
Deactuated Deactuated
Shorted bi t Actuated Deactuated
(to 28 Vdc) Deactuated Deactuated
Open or grounde d Actuated Actuated
(bit) Deactuated Deactuated
PRELIMINARY DATA
PRELIMINARY DATA
Dimensions in mm (for reference only)
b
Measured with target 12.7 x 12.7 x 6.3,
300 M Steel
33
Specifications
Sensing Charact eristics : Level Specification (Note 1)
Switc hing function Normal ly open, curre nt sourc e
Guarant eed actuati on distanc e ≥ 1.02 mm
Differential travel ≤ 2.92 mm
Guarant eed deactuati on dista nce ≤ 0.13 mm
Power-on delay ≤ 50 ms
Repetition rate of sensing 0 to 100 Hz
Fals e pulse sup pression Yes
Bite Input :
BITE far +VB-3 V to + VB
BITE near -12 to - 30 V
Fail ure Mode Detection :
Ext ernal wiri ng Accordi ng to Table 1
Electrical Specif ications :
Power Supply -
Supply v oltage +18 to +30.0 V
Rippl e volta ge ≤ 1 Vrms at 10 Hz -6. 5 kHz
Surge volt age ≤ 50 V in 50 ms
Current c onsumptio n w/o load ≤ 9 mA
Diel ectric s tr ength ≥ 500 V
Insulation resistance ≥ 10 MOhm at 500 V
Out put -
On state out put voltage ≤ 1.0 V a t 15 mA
Maxi mum curren t consumpt ion ≤ 30 mA
Load cur rent ≤ 15 mA
Current limit ≤ 23
Off st ate leakage c urrent ≤ 67 µA
Environ mental Specifi catio ns :
Operating t emperature r ange -53° t o +82° C
Storage t emperature -53° to +82° C
Temperature cy cli ng 500 cycl es
Altitude -305 m t o 15,240 m
Humidity 100% RH
Salt mist ≥ 0.2 gr./ m3
Immersion Hermet ically seale d
Acceleration TBD
Vibration TBD MIL-STD -810D, Meth. 514. 3, Cat . 5, Proc. I
MIL-STD- 810C, Meth. 514. 2, Proc. XI
Shock TBD MIL-STD- 810D, Meth. 516.2 , Proc. I V & V
EMC Req uirements :
Radiat ed emissi ons RE101 MIL-STD-461D
Radiat ed emissi ons RE102 MIL-STD-461D
Conducted s usceptibility CS101 MIL-STD-461D
Conducted s usceptibility CS101 MIL-STD-461D
Conducted s usceptibility CS102 MIL-STD-461D
Radiated susceptibility RS101 MIL-STD-461D
Radiated susceptibility RE103 (200 V/ m, 10 kHz to 35 G Hz) MIL-STD -461D
Lightni ng induced t ransients , Pin tes t Cat egory A3XX DO-160C, Se ction 22, J une 19, 1992
Magnet ic suscept ibility Section 3. 4.1.2 LOCKHEED 423062
Stati c magne tic fiel ds Section 3. 4.1.3 LOCKHEED 423062
Dynami c magnetic f ields Sect ion 3.4. 1.4 LOCKHEED 423062
Mean Time Between Fai lure predi ction > 200000 hrs MIL-HD BK-217 F
Notes :
1. Unl ess othe rwi se st ated, te ste d to or by simil arity t o Hone ywell int erna l speci fica tions
