S/NoParametersER-T1 AER-T1 BER-T1 CUnit
1Range±50±50±50g
2Threshold /Resolution555µg
3Bias k0/k1= ±4 = ±7= ±10 mg
4Scale factor kl1.3±0.2 1.3±0.2 1.3±0.2 mA/g
5Class II nonlinearity
coefficient k2/k1=±20=±60=±60µg /g2
60g 4 hours short time stability=15 =30 =30 µg
71g 4 hours short time stability=15 =30 =30 ppm
8Bias drift Sigma k0( 1s,one month)=20 =80=100 µg
9Repeatability of scale factor Sigma kl/kl( 1s,one month)=20=80 =100 ppm
10Class II nonlinearity Coefficient repeatability k2/k1(1s,one month)=±15 =±30 =±30µg /g2
11Bias thermal coefficient=±20 =±100 =±100 µg /?
12Scale factor thermal coefficient=±30 =±100 =±160 ppm /?
13Noise (sample resistance 840O)=5=8.4=8.4mv
14Natural Frequency400~800 400~800 400~800 Hz
15Bandwidth800~2500 800~2500 800~2500 Hz
16Vibration5g(20-2000Hz)g
17Shock100g,5ms,1/2sin
18Temperature range(Operating)-40-+85-40-+85-40-+85?
19Temperature range(saved)-60-+120-60-+120-60-+120?
20Power±12~±15±12~±15±12~±15V
21Consume current
High precision Gyro North-finding Instrument
Functions and Applications:
High precision Gyro north find instrument is one kind of directional instrument, which can autonomic find north without any rely, and the azimuth targets , the measuring process was automatic measured instead of manual, except the leveling and aiming, and after measurement, the normal for aimed and north azimuth will be give by the instrument. This product adopt the magnetic suspension technique which made the gyro pickups and pickoffs suspendend. It is effectively eliminated harmful torques caused by friction, elastic deformation, etc., as well as guarantee high precision of the product and stable apparatus constant.
Features: compact structure, small volume, quickly find north, high degree of automation, strong adaptability to environment, etc.
Application: This high accuracy magnetic suspension gyro compass is one of directional devices which would precisely measure the accurate angle between an optical axis direction of the aiming instrument and geographic north direction. It can be widely used in tunnel, Mine projects, and etc. field that are needed in the accurate measuring datum for the north direction.
Specifications:
? North-finding error:
? North-finding time: =12 min
? Control units: -40~ +50?
? Operating latitude: -65~ +65°
? Dimension of itself: 360mm*230mm*230mm, Weight: 16Kg
? Dimension of the control units: 330mm*340mm*200mm, Weight: 15Kg
? Dimension of the Theodolite: 160mm*193mm*280mm, Weight: 5Kg
? Power supply: 27±3V, Power: 150W
Advantages:
? Instrument constant with high stability, after 6 months, the instrument constant HHHHvariationHHHH ?C = 20''
? The instrument with high automation degree, Only need artificial leveling, and enter the latitude value.
? Can be used on vehicle directly or be used with a tripod.
? Using the CCD to measure misalignment angle HHHHaccuratelyHHHH, reduce human error.
