0729-1751-99 Dual-Axis SPI Inclinometer

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.

Product Description
±60° Dual-Axis SPI Inclinometer
±60° Dual-Axis SPI Inclinometer
PN: 0729-1751-99
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”)
1-6200-012 Dimensional Drawing
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
Quantity Price
1 $84.29
10 $78.89
100 $70.82
500 $60.15
1000+ $50.23