Barometric Altimeter ( ALT )                                                                                     
Aircraft Instruments
Barometric Altimeter is an indispensable part of flight display system. It indirectly
measures the absolute barometric height or relative barometric height during flight of
the aircraft by direct measuring atmospheric pressure, and display the information to
pilot.  
BG-1E Barometric Altimeter
(Approved by CAAC, No.: TSOA0032-HB-004)

BG-1E meets the requirement of CCAR TSO-10b
"Technical Standard order, Altimeter" and RTCA DO
160C-1989 "Environmental Conditions and Test
Procedures for Airborne Equipment"

Features
Sensitive altimeter, three pointer
Breech loading configuration
Modularized internal structure
High accuracy aneroid capsule adopted
Excellent environment adaptiveness
Interior lighting applicable
Error-proof connection

Technical Performance Date
Altitude measurement range: -1000ft~20,000ft
Barometric scale range: 28.1inHg~31.0inHg
Operating temperature: -30℃~50℃
Storage temperature: -65℃~70℃
Accuracy: meet AS392C of TSO-C10b
Interior lighting: white light, 28V DC
Weight: <=500g (installation accessories not
included)
Size: 2-1/4" (64mm x 64mm; Location hole:
D57mm)
BG-3J  Barometric Altimeter
(Approved by CAAC, No.: TSOA0032-HB-003)

BG-3J meets the requirement of CCAR TSO-10b
"Technical Standard order, Altimeter" and RTCA DO
160C-1989 "Environmental Conditions and Test
Procedures for Airborne Equipment"

Features
Sensitive altimeter, three pointer
Breech loading configuration
High accuracy aneroid capsule adopted
Excellent environment adaptiveness
High reliability

Technical Performance Date
Altitude measurement range: -1000ft~20,000ft
Barometric scale range: 28.1inHg~31.0inHg
Operating temperature: -30℃~50℃
Storage temperature: -65℃~70℃
Accuracy: meet AS392C of TSO-C10b
Weight: <=600g (installation accessories not
included)
Size: 3-1/8" (D80mm)
Other Non TSO'd Barometric Altimeters
BG-3E                            BG-3
BG10-2
Products List
Model
Measuring Range
Barometric Scale
Range
Size
Description
BG-9
0~5000ft
27.0~31.0inHg
2-1/4"
Single pointer
BG-7
0~5500ft
28.1~31.0inHg
3-1/8"
Single pointer
BG-12A
0~5500ft
950~1050mbar
3-1/8"
Single pointer
BG-10
0~10000ft
27.0~31.0inHg
2-1/4"
Single pointer
BG-11
0~10000ft
28.0~31.0inHg
3-1/8"
Single pointer
BG-11A
0~10000ft
950~1050mbar
3-1/8"
Single pointer
BG-3
-1000~20000ft
28.1~31.0inHg
3-1/8"
Sensitive altimeter, three pointers,
ten thousands pointer in disk form
BG-3B
-1000~20000ft
28.1~31.0inHg
3-1/8"
Sensitive altimeter, three pointers,
ten thousands pointer in needle form
BG-3A
-1000~20000ft
950~1050mbar
3-1/8"
Sensitive altimeter, three pointers,
ten thousands pointer in disk form
BG-3E
-1000~20000ft
950~1050mbar
3-1/8"
Sensitive altimeter, three pointers,
ten thousands pointer in needle form
BG-3H
-1000~20000ft
950~1050mbar
28.1~31.0inHg
3-1/8"
Sensitive altimeter,
two baro-windows, three pointers,
ten thousands pointer in disk form
BG3
0~3000m
910~1050mbar
2-1/4"
Single pointer
BG3-2
0~3000m
700~1040mbar
3-1/8"
Dual pointers
BG6-1A
0~6000m
900~1050mbar
2-1/4"
Single pointer
BG6-2
0~6000m
700~1040mbar
3-1/8"
Dual pointers
BG10-2
0~10000m
600~1040mbar
3-1/8"
Dual pointers
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