Legacy Products:

IMU-E604 (Discontinued Product)

Description:

The IMU-E604 is a complete inertial gyro system. It features three angular rate gyros, three accelerometers, and a fluxgate magnetometer all in a compact, durable package. With this sensor suite, the Watson Inertial Measurement Unit has the capabilities of an AHRS and a DMS combined. It has full attitude outputs - bank, elevation, and magnetic heading - along with triaxial leveled accelerometer data. This allows the IMU-E604 to be used in a wide range of applications, almost any in which an AHRS or DMS might be used. This makes the inertial measurement unit a superb general purpose instrumentation package for research and automotive testing facilities.

The IMU-E604 inertial sensor outputs data via an RS-232 serial link. This allows users to easily view data from the unit. It also allows users to easily change operational parameters for the inertial measurement unit, such as the output data channel selection. In addition to the standard attitude outputs, the IMU is capable of providing triaxial rate, acceleration, and magnetometer data to the user. Watson Industries provides free software for magnetic heading calibration that can be used once the IMU is installed.

Rate Gyros -
Our rate sensors are solid state, vibrating structure angular rate gyros. They combine excellent performance with ruggedness and small size, and may be used in high vibration environments.
Accelerometers -
The Inertial Measurement Unit (IMU) features instrument grade accelerometers. Alternate ranges are available.
Bank And Elevation -
The IMU functions as an attitude gyro with stabilized outputs. We integrate solid-state gyros to obtain angular position but use attitude references to constrain gyro drift error, as well as to provide information for an Euler coordination transformation on the triaxial magnetometer data.
Magnetic Heading Sensor -
A triaxial magnetometer, combined with the bank and elevation data, provides accurate magnetic heading data. This results in a digital compass with accurate heading information - without the use of gimbals. PC heading calibration software is available.
Sensor Alignment -
Each sensor is aligned with its proper axis to within 0.1°. This feature is critical for a triaxial set of sensors. The resolution of a sensor can be overwhelmed by corruption of data due to sensor misalignment.
Convenience -
You install only one sensor package.

Features:

	• Solid State, Strapdown System
	• Six Accelerometer Outputs
	• Rugged, High Reliability
	• Convenient Set-up
	• Vibration Resistant
	• Analog and RS-232 Serial Outputs
	• Two Year Limited Warranty
	• Engineering Support

Inertial Gyro Sensor IMU-E604 Specifications
Attitude
	Range: Bank	±180°
	Range: Elevation	±90°
	Resolution:	0.02°	Binary mode (14 bit)
	Analog Scale Factor:	18°/V	±10V Output
	Accuracy: Static	±0.25°
*	Accuracy: Dynamic	±2%
Heading
	Range:	0° - 360°
	Resolution:	0.02°	Binary mode (14 bit)
	Analog Scale Factor:	18°/V	±10V Output
†	Accuracy: Static	±1°
*	Accuracy: Dynamic	±2%
Angular Rate
	Range: Roll, Pitch, Yaw	±100°/sec
	Resolution:	0.01°/sec	Binary mode (14 bit)
	Analog Scale Factor:	10°/sec/V	±10V Output
	Scale Factor Accuracy:	1%
	Bias: Roll, Pitch, Yaw	< ±0.02°/sec
	Non-Linearity:	< 0.03%	Full scale range
	Bandwidth:	20 Hz
Acceleration
	Range: X, Y, Z	±10g
	Range: Forward, Lateral, Vertical	±10g
	Resolution:	4mg
	Analog Scale Factor:	1g/V	±10V Output
	Scale Factor Accuracy:	1%
	Bias: X, Y, Z	< ±5mg
	Non-Linearity:	< 1%	Full scale range
	Bandwidth:	20 Hz
Magnetic
	Range: X, Y, Z	±1000 mGauss
	Resolution:	0.1 mGauss	Binary mode (14 bit)
	Scale Factor Accuracy:	1%
	Bias: X, Y, Z	< ±5 mGauss
	Non-Linearity:	< 0.01%	Full scale range
	Bandwidth:	10 Hz
Environmental
	Temperature: Operating	-30°C to +60°C
	Temperature: Storage	-55°C to +85°C
	Vibration: Operating	5g rms	20 Hz to 2 kHz
	Vibration: Survival	10g rms	20 Hz to 2 kHz
	Shock: Survival	500g	10mS ½ sine wave
Electrical
	Frame Rate:	71.1Hz	Maximum
	Startup Time: Data	5 sec
	Startup Time: Fully operational	10 sec
	Input Power:	10 to 30VDC	4.8W
	Input Current:	400mA @ 12VDC	200mA @ 24VDC
	Input Velocity: (Optional)	±10VDC	Full scale (±400kph)
	Digital Output:	RS-232
	Analog Output:	±10VDC
Physical
	Axis Alignment:	< 0.1°
	Size: Including Mounting Flanges	6.5"W x 6.5"L x 3.00"H	16.5 x 16.5 x 7.6 (cm)
	Weight:	53oz (3.3lb)	1500 grams (1.5Kg)
	Connection: RS-232	9 pin female "D" subminiature
	Connection: Power / Analog Outputs	25 pin male "D" subminiature
*	Assumes accurate velocity data. Actual accuracy can be calculated as the listed percentage multiplied by the change in value over the entire dynamic maneuver.
†	Static heading accuracy is dependent on the magnetic environment. This sensor will meet or exceed this spec within the 48 contiguous United States.
	Specifications are subject to change without notice.

Inertial Measurement System IMU-E604 Dimensions