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ECV-IMU Inertial Measurement Unit

Jewell Instruments’ offers ECV-IMU Series initial measurement units which assure high accuracy in a small package. This inertial measurement unit is a cost efficient, low power consuming device which provides stable azimuth, pitch, and roll measurements in dynamic conditions. This sensor consists of 3-axis angular rate gyros, 3-axis accelerometer, 3-axis magnetometer, and optional 2-axis electrolytic tilt sensor. These IMUs have a wide operating range and are factory calibrated. Hence, they offer an accurate and fast output through RS-485.



Additional information

Weight 7.1 oz
Dimensions 5.43 × 2.83 × 1.22 in

• Exceptional dynamic performance
• High accuracy
• Precise factory calibration
• Wide operating range
• RS-485 output
• Anodized and Alodine Aluminum enclosure
• Fast response
• Low power


• Unmanned vehicles
• Robotics
• Platform stabilization
• Excavation machinery
• Rail

Performance Specifications


Sensor3-axis Accelerometer3-axis Gyro3-axis Magnetometer
Input Range±2g±250°/sec±2G
In-Run Bias Stability<0.2°/sec
Noise Density<45µg√Hz<0.005°/sec√Hz<29nV/√Hz
Axis Misalignment2%±3% FS
Resolution<0.06 mg<0.01°/sec<27µG


Supply Voltage+7.0 to +45Vdc
Electrical Isolation1500 Vrms
Power ConsumptionStandby:5mA

Built-In Tests

Temperature SensorYes
Digital Output InterfaceRS-485 (Continuous streaming)
ICD (Basic Fields Reported)
*Download datasheet for Data Packet
Acceleration (X, Y, & X axis)Rate Angular Speed (X, Y, & X axis)
50 Hz sampling speedCompass Direction (X, Y, & X axis)


Operating Temperature-40 to +70°C
Storage Temperature-55 to +85°C
Ingress ProtectionIP67
FlammabilityUL94 V-0
Fire ProtectionEN 45545 Hazard Level 3 (HL3)
Altitude0 to 2500m above sea level
RoHS CompliantYes

Specifications subject to change without notice on account of continued product development


User’s Guide

About IMU

The standard Electronic Compass products contain 3 axes of acceleration, angular rate (gyro) and magnetometer. Software in the microprocessor calculates and outputs heading, pitch and roll based on the combination of the sensors. The IMU (inertial measurement unit) is a compliment of 3 axes of accelerometers, gyro’s and magnetometers. With the ECV-IMU version, the data can be independently output from the individual sensors. The outputs are presented as the individual sensors themselves (ie: acceleration, angular rate and azimuth (orientation with respect to north). There are no calculations to determine heading, pitch or roll internal to the IMU. The IMU is meant for customers who will perform their own calculations in their system.

At Jewell Instruments, we focus on accuracy and precision for our IMU inertial measurement unit. We have a market presence of over 60 years and have worked with clients from diverse industries. This has helped us develop expertise in advanced sensors and precision sensing and measurement equipment. Our IMU inertial measurement unit is designed and equipped to meet the required precision in your measurement. If you have an application that might require an IMU, we can help you. For more information, please get in touch with our team today.