Inertial Measurement Units


IFOS-500	IFOS-500T	IFOS-400	IFOS-400C	IFOS-501	IFOS-501D	IFOS-1000

All Fiber Optical Solution’s IMUs are based on Fiber Optical Solution’s three axis closed loop fiber optic gyroscopes and three pendulum accelerometers. Latest model – IFOS-400 is the state-of-art miniature FOG IMU with low-noise MEMS accelerometers (3 triads of MEMS utilized and combined)

Specification	IFOS-500	IFOS-500T	IFOS-400	IFOS-400C	IFOS-501	IFOS-501D	IFOS-1000
Gyro
Range of measured angular rate, °/s	±400	±400	±550	±400	±250 (optional ±1000)	±250 (optional ±1000)	±550
Bias drift at fixed temperature (100s-averaging, 1σ), °/hour	≤0.1 ≤0.005 (Allan variance)	≤0.1 ≤0.005 (Allan variance)	≤0.1 ≤0.007 (Allan variance)	≤0.1 ≤0.007 (Allan variance)	≤0.03 ≤0.002 (Allan variance)	≤0.03 ≤0.002 (Allan variance)	≤0.005 ≤0.0005 (Allan variance)
Bias drift at changing temperature from -40°C to +60°C (100s-averaging, 1σ), °/hour	≤0.3	≤0.5	≤0.3	≤0.3	≤0.1	≤0.05	≤0.03
Scale factor error in temperature range -40°C to +60°C (1σ), ppm	≤200	≤300	≤300	≤300	≤200	≤100	≤100
Random walk (Allan variance), °/√hour	≤0.007	≤0.01	≤0.01	≤0.01	≤0.005	≤0.005	≤0.0007
Bandwidth, Hz	>1000 (user defined)
Accelerometer
Range of measured acceleration, g	±10g to ±40g	±10g to ±40g	±10g	±10g to ±40g	±10g to ±40g	±10g to ±40g	±10g to ±40g
Bias repeatability, mg	≤0.5	≤0.5	≤1.0	≤0.7	≤0.5	≤0.3	≤0.3
Velocity random walk, µg/√Hz	≤20	≤20	≤80	≤30	≤20	≤15	≤15
Scale factor error in temperature range -40°C to +60°C (1σ), ppm	≤300	≤500	≤500	≤300	≤300	≤150	≤100
Physical Characteristics
Misalignment, mrad	≤1.5 (≤0.3 mrad under request)	≤1.5 (≤0.3 mrad under request)	≤1.5 (≤0.3 mrad under request)	≤1.5 (≤0.3 mrad under request)	≤1.5 (≤0.3 mrad under request)	≤0.3 mrad	≤0.3 mrad
Output sample rate	up to 2000 Hz	up to 2000 Hz	up to 2000 Hz	up to 2000 Hz	up to 2000 Hz	up to 2000 Hz	up to 2000 Hz
Power supply, V	5 VDC or 24~36 VDC	24~36 VDC	5 VDC	5 VDC	24~36 VDC	24~36 VDC	24~36 VDC
Power consumption, W	≤10 W	≤15W normal, ≤80W (heating on)	≤7 W	≤10 W	≤20 W	≤20 W	≤20 W
Digital output interface	RS485 or RS422	RS422 (RS485 under request)	RS422 (RS485 under request)	RS422 (RS485 under request)	RS422 (RS485 under request)	RS422 (RS485 under request)	RS422 (RS485 under request)
Operation temperature	-40°C ~ +60°C	-60°C ~ +60°C	-40°C ~ +60°C	-40°C ~ +60°C	-40°C ~ +60°C	-40°C ~ +60°C	-40°C ~ +60°C
Storage temperature	-40°C ~ +80°C	-60°C ~ +80°C	-40°C ~ +80°C	-40°C ~ +80°C	-40°C ~ +80°C	-40°C ~ +80°C	-40°C ~ +80°C
Dimensions	110 × 110 × 90 mm	185 × 143 × 114 mm	80 x 95 x 65 mm	Ø79 × 145 mm (mounting Ø90)	140 × 140 × 110 mm	Ø142 × 280 mm	171 × 224 × 233 mm
Weight	1.4 kg	2.6 kg	0.7 kg	0.9 kg	3 kg	6.4 kg	8.4 kg