Biaxial Force Balance Inclinometers

The Columbia Models SI-702AI and SI-702AIHP are biaxial force balance inclinometers with a 4–20 mA data transmission output circuit. The 4–20 mA system is widely used in industrial settings to send data over long distances in areas where interference from surrounding electrical power lines is a concern.

Both the sensor and the 4–20 mA line driver are powered by a single +15 volt supply. These devices can deliver reliable tilt data even in high-vibration conditions thanks to special desensitization circuitry. The SI-702BI and SI-702BIHP Biaxial Inclinometers have similar features and provide an output voltage as well as current.

4–20 mA output

High performance and low cost

Biaxial Tilt Sensor

Image Credit: Columbia Research Laboratories, Inc.

Specifications

Operational

Table 1. Source: Columbia Research Laboratories, Inc.

Environmental

Table 2. Source: Columbia Research Laboratories, Inc.

Physical

Table 3. Source: Columbia Research Laboratories, Inc.

Typical Frequency Response

SI-702AI & SI-702AIHP

Image Credit: Columbia Research Laboratories, Inc.

Vibration Overload vs. Frequency

Figure 1. Image Credit: Columbia Research Laboratories, Inc.

Figure 2. Image Credit: Columbia Research Laboratories, Inc.

Output Connector Pin Functions

Table 4. Source: Columbia Research Laboratories, Inc.