Part Number: 0729-1751-99
Features and Benefits:
- ±60° operating range, ±25° linear range inclinometer
- Dual/two-axis measurement inclinometer
- Simple to use SPI communications digital inclinometer
- Response time of ≤100 ms high precision digital inclinometer sensor
- Works with industry-standard 12 V DC vehicle batteries
- Low current device drawing 20 mA at 12 V DC; low power consumption
- PCB board-level design for simple integration
- Superior performance in extreme temperatures and environments
- Excellent customer support
The 0729-1751-99 dual-axis high precision digital inclinometer sensor with SPI digital communications are designed and manufactured by Fredericks for use on heavy industrial machinery and other applications where an industrial, robust, cost-efficient solution is needed. This high-precision digital inclinometer sensor has a wide linear angle range and SPI communications combined with a small footprint make it simple to integrate into new or existing equipment and designs. The standard version of this inclinometer sensor does not have a housing, so you can integrate it into your board-level design.
The Fredericks Company’s inclinometers take our proven electrolytic tilt sensors and combine them with electrolytic tilt sensor circuits to make inclinometer solutions for use in various markets and applications. Electrolytic tilt sensing technology makes these inclinometers extremely stable with no long-term drift compared to MEMS devices, all in a low-cost inclinometer package.
| Interface | SPI |
| Supply Voltage | 3.3 V DC to 5 V DC |
| Supply Current | 6 mA (5 V DC), 4 mA (3.3 V DC) |
| Operating Range | ±60º |
| Linear Range | ±25º |
| Typical Output Behavior | View on office.com | Download (.xlsx) |
| Axes of Measurement | 2 |
| Repeatability | ±0.1° |
| Resolution | ≤0.003° |
| Null Offset | ±5° |
| Long Term Stability/Drift | ≤0.1° |
| Null Temperature Coefficient | ≤0.006° per °C |
| Scale Temperature Coefficient | 0.1% per °C |
| Materials | Contains magnetic metals |
| Operating Temperature | -40 °C to 85 °C |
| Storage Temperature | -40 °C to 125 °C |
| Temperature Sensor Range | -40 °C to 125 °C |
| Time Constant (63.2% of output) | ≤100 ms |
Operating Range
| Housing | None (PCBA) |
| Electrical Connections | 7 Pin, 2.54 mm (0.1”) spacing |
| Weight | 5.5 g |
| Length | 31.75 mm (1.25”) |
| Width | 31.75 mm (1.25”) |
| Height | 16.10 mm (0.63”) |
| Hole Center | 26.67 mm (1.05”) |
| J1 Pin 1 (+5) | Power supply (+) |
| J1 Pin 2 (C) | Power supply (-) |
| J1 Pin 3 (C) | Ground |
| J1 Pin 4 (OUT) | SDO, SPI slave data output |
| J1 Pin 5 (IN) | SDI, SPI slave data input |
| J1 Pin 6 (CLK) | SCK, SPI slave clock input |
| J1 Pin 7 (/SS) | SPI slave select |
| L1 | Dual axis sensor connection |
| J3 | Single axis sensor x axis connection |
| J4 | Single axis sensor y axis connection |
SPI Slave Information
| Clock | From master, idle high, 500 kHz to 1 MHz |
| Data Transfer Edge | Clock high to low |
| Data Bits | 8, MSB first |
| Start Bits | 1 |
| Stop Bits | 1 |
| Slave Select Polarity | Idle high, low when transferring data |
SPI Commands, ASCII, and Hexadecimal Values
| ‘1’, 0x31 | X axis high byte of 16-bit output |
| ‘2’, 0x32 | X axis low byte of 16-bit output |
| ‘3’, 0x33 | Y axis high byte of 16-bit output |
| ‘4’, 0x34 | Y axis low byte of 16-bit output |
| ‘5’, 0x35 | Board temperature high byte of 10-bit output |
| ‘6’, 0x36 | Board temperature low byte of 10-bit output |
| ‘9’, 0x39 | Update all data (software version 2.0.0 and higher) |
| RoHS Compliant |
Product Documentation
| 0729-1751-99 Datasheet |
| 0717-4318-99 Typical Output Behavior: View on office.com | Download (.xlsx) |
| 0729-1751-99 STEP File |
| Arduino SPI Communications INO File |
Application Notes
Tools
| Angle Measurement Converter |
Videos
| What Is An Electrolytic Tilt Sensor? |
Brochures
| Tilt Measurement Product Catalog |
Download STEP File
| Part Number | Description | STEP File |
| 0729-1751-99 | ±60° SPI Inclinometer | Download |
0729-1751-99 Quantity Discounts
| Quantity | Price |
| 1 | $84.29 |
| 10 | $78.89 |
| 100 | $70.82 |
| 500 | $60.15 |
| 1000+ | $50.23 |