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BITE
Indicators
Model MI 6ISA
Qualified to MIL-PRF-83287/1
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The MI61SA (MIL-PRF-83287/1) series magnetic
latching fault indicator displays highly visible dual
color internal flag when the indicator coil is pulsed
by a BITE (Built-In Test Equipment) system. The "cloverleaf"
pattern provides a high contrast visual indication and
an effective warning of system results.
Covered
by U.S. and Foreign Patents. Patent No. 4,661,813
Cleared by
DOD/OFOISR for public release under 00-S-1235 dated
April 17, 2000.
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Manual Reset Return |
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Magnetic Latching |
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Environmentally Sealed |
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Random Vibration Capability |
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OPERATION
When the indicator coil is energized with a 40 millisecond
(or longer) pulse, the highly visible display disc rotates
and latches to the magnetic core. The display disc will
remain magnetically latched to the core in the position
last pulsed. Even if the fault signal is removed, the
indicator will "remember" that a fault had occurred.
Reset to the "no-fault" position is accomplished
mechanically by rotating the knurled knob clockwise
to 60°. The knob automatically returns to its normal
position.
Optional features include insulated lead
wire or solder loop termination, non-glare lens, and
RFI panel shield. Consult your representative or the
factory for details.
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| Standard
Coil Voltages and Resistances |
Nominal
Voltage DC |
Operating
Voltage |
DC Coil Resistance
in Ohms
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Min |
Max |
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3.0
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2.4
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3.6
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8.5-18
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5.0
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4.0
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6.0
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22.52.8
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6.0
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4.8
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7.2
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33-77
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12.0
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9.6
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14.4
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130-303
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20.0
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16.0
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30.0
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360-1225
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24.0
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19.2
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28.8
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530-880
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28.0
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22.4
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720-1331
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Pulse Power: One watt |
| Nominal
Pulse Length: 40 milliseconds, minimum. |
| Dielectric
Withstanding Voltage: 500 VAC RMS |
Insulation
Resistance:
Mil Spec: Per
MIL-PRF-83287, 100 megohms minimum at 500
VDC. |
Electromagnetic
Interference and Magnetic Susceptibility:
Per MIL-PRF-83287. MI 61 SA will not malfunction
of false transfer when subjected to a 20 ampere
turn field at 400 Hertz. |
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| Case:
Black, anodized aluminum. |
| Mounting:
Front panel mount (D-hole or keyed washer). |
| Weight:
13 grams |
| Display
Colors: "NO FAULT" is black, "FAULT" is black/
white, as shown. |
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Leads: Eight inches of #26
AWG Teflon insulated stranded wire or Loop Terminals.
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| Operating
Temperature Range: -65°C to +125°C. |
| Vibration*: |
Sinusoidal:
.06" D.A. or 20 G Peak, which ever is less, 10 Hz
to 2 KHz per
MIL
STD 202, Method 204, Test Condition D. |
| Random:
11.6 G's per MIL STD 202, Method 214, Test Condition
D, Curve 1. |
| Shock:
100 G's MIL STD 202, Method 213, Test Condition
I. |
| Moisture Resistance:
(Humidity): MIL STD 202, Method 106. |
| Thermal Shock:
MIL STD 202, Method 107, Test Condition B. |
| Salt Spray:
MIL STD 202, Method 101, Test Condition B. |
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Barometric Pressure:100,000 ft. MIL STD
202, Method 105, Test Condition D, with 350 Volts
RMS.
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| Life:
10,000 cycles at cycling rate of 10 per minute.
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| *During vibration
testing, caution should be taken to shield the indicator
from the strong magnetic field. |
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When
ordering, show model number first, then coil voltage
desired, then the color combination desired. If this
is a special part, factory modification number will
be added at the end of the
ordering number.
Example:
Basic model for 12 volts with all black for reset
(no-fault) color and white for set (fault) color, solder
loop terminals would be Model MI 61 SA -12- W/BLK-LT
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MI
61SA - 12 - W
/ BLK - LT- S
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Basic
Model
Number
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Coil
Voltage
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Fault
or Set
Color
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No fault
Color
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Terminal
Type
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Factory
Modification
Number if Special
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MI
61SA
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3
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W/BLK-White/Black
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BLK
Black
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WL-Wire
Leads
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S.+
ID No.
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5 |
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LT-Loop
Terminals
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6 |
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12 |
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20 |
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24 |
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28 |
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Dim. in ( ) are mm. Tolerances:
Decimals: ± .010 (0,25), Fractions:± 1/64 —
All mounting hardware is black anodized aluminum. Mounting
Torque: 5-7 in. lbs
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