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6340-01-643-7756 Specification Set by the OEM (see RNCC code 3)
24.0 volts
field and aircraft
nontripod mounting
0.7 pounds
ice and water
FREEZING-Rain sensor
output format:RS-422 output operates at 9600 bps; input voltage:22 to 29.5 vdc; sensing mode: 5 w max; delcing mode:27 w max; temperature range:operating:-55 degree to 77 degree celcius; storage:-65 degree to 90 degree celcius; random vibration: 7.9 grms (DO-160C category e) ; base diameter:2.88 in; base height: 3.81 in; plate size: 2.9X2.9X0.085 in; operating modes:sensing:operating with no ice or with probe ice thicknes below the set point.deicing: operating with probe ice thickness exceeding the set point.
determine the presence of icing conditions. its main component is a nickel allow rod that has a natural resonant frequency of 40khz. as ice collects on the rod, the added mass cause the resonant frequency to decrease. when the frequency decreases to 130hz (or 0.02-in layer of ice) an internal heater automatically defrosts the sensor.
Cross Reference Parts Part numbers that meet the specification outlined on this page and set by the OEM
Identification Item Identification Guide (IIG) and Item Name Code (INC)
Definition Definition of approved item name (AIN): "DETECTOR,ICE"
A device designed to detect icing conditions and provide an ice warning signal when the ice accretion reaches a preset level. The device may also transmit an electrical signal which can be used to control operation of the ice protection system.
6340-01-643-7756 Material Hazmat, Precious Metals, Criticality, Enviroment, and ESD
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Item does not contain precious metal.
No known electrostatic discharge (esd) or electromagnetic interference (emi) sensitivity.
Represents items with no adp components
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Identification Codes
HMIC: Hazardous Material Indicator Code. A one position code that identifies a hazardous item.
PMIC: Precious Metal Indicator Code. A one position code which identifies items that have precious metals as part of their content. precious metals are those metals generally considered to be uncommon, highly valuable, and relatively superior in certain properties such as resistance to corrosion and electrical conductivity.
ESD: Electrostatic Discharge. Indicates if an item is susceptible to electrostatic discharge or electromagnetic interference damage. electrostatic discharge damage occurs when an accumulation of static electricity generated by the relative motion or separation of materials is released to another item by direct contact. electromagnetic interference damage occurs when an item comes into proximity with an electrostatic or magnetic field.
ENAC: Enviromental Attribute Code. Identifies items with environmentally preferred characteristics.
CRITL: Criticality Indicator Code. Indicates an item is technically critical by tolerance, fit, application, nuclear hardness properties, or other characteristics.
