#3402875-1 Digital Tachometer | Engine Instruments

3402875-1

Electrical Tachometer Indicator

NSN 6620-01-394-0365

DEMIL
Shelf Life
UOM
NIIN
Demil:
DEMIL/MLI
Shelf Life:
N/A
UOM:
1 EA
NIIN:
013940365

Product Features

Weight 2 lbs; portable instrument; derives power from the aircraft bus; instrument circuitry 100% solid state; requires no calibration; essentially drift free; at 100% rpm the displayed percent rpm presentation is updated 7 times each second; interfaces to an existing phone jack in the flight deck onboard the acft

Technical Specifications of NSN

Width:
4.000 inches
Current Type:
Ac
Ac Voltage Rating:
115.0 volts
Frequency Rating:
400.0 hertz
Depth:
3.500 inches
End Application:
C-130 aircraft support
Presentation Type:
Digital display
Scale Range:
+66.0/+277.0 percent revolutions per minute single indicator single scale
Electrical Connection Quantity:
1
Fuse Current Rating In Amps:
1.0
Display Type:
Light emitting diode
Display Digit Quantity:
4
Accuracy Rating:
0.1 percent revolutions per minute single indicator single scale
Part Name Assigned By Controlling Agency:
Master percent rpm indicator
Phase:
Single
Height:
6.000 inches
Supplementary Features:
Ia small portable instrument used to measure the rpm of each engine on the c-130 acft; the led readout presents this information as some percent of 100% rpm making it suited for engine trim applications
NSN:
6620-01-394-0365
Item Name:
Tachometer,digital
Cage Code:
98897

Other Related Parts

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
3402875-1
Cage Code:
16331
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:

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Catalog Drilldown
--- Instruments And Laboratory Equipment
------ Engine Instruments
--------- Electrical Tachometer Indicators
------------ P/N 3402875-1

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Last Updated: 05/03/2025