02 · AttitudeSMT · GNSS-fused
IM26
Newest SMT IMU — GNSS RTK fused
Roll/Pitch 0.02° 2σGyro BI 1 °/hForm SMT
01 · Attitude · SMT · Reference
IM19
The original tilt-compensation reference
The module that effectively set the GNSS tilt-compensation bar. Over 100,000 units in active field service by 2023, integrated by 20+ surveying partners worldwide. Multi-jurisdiction patents and painless integration.
Units shipped 100K+Roll/Pitch dyn 0.05° 2σPatents WW
Overview
About the IM19
The FMI IM19 inertial module fuses MEMS sensor and GNSS RTK positioning data to deliver low cost, high-precision attitude measurement, with roll and pitch accurate to within 0.05 degrees.
This kind of accuracy has found IM19 widespread use in industrial applications such as tilt RTK surveys (where RTK poles need not be held straight vertical, as IM19 can calculate a virtual digital level at any tilt angle), agriculture machine automation, and dead reckoning.
Specifications
IM19 technical specifications
| Acceleration range | ±8 g |
|---|---|
| Gyroscope range | ±1000 deg/s |
| Attitude accuracy | ±0.05 deg |
| Heading accuracy | ±0.5 deg |
| Accelerometer bias accuracy | ±5 mg |
| Gyroscope bias accuracy | ±0.2 deg/s |
| Tilt survey accuracy | 1 cm with up to 30° tilt angle |
| Tilt survey initialization time | 1 second (95%) |
| Ag auto steering yaw | 0.5° |
| Supply voltage | 3.0 – 3.6 V (3.3 V typ.) |
|---|---|
| Current consumption | 120 – 140 mA (130 mA typ.) |
| Port voltage | 3.3 V (all ports) |
| Interfaces | UART1, UART2 (GNSS), UART3, 1PPS |
| Module height | 3.2 ± 0.1 mm |
| MEMS raw data output | 100 Hz |
Source: IM19 Product Integration Guide, v1.4.1 (12-2023). Specifications are subject to change — always confirm against the latest datasheet before designing a module into your product. Request the current revision →