Overview of the BoltSafe CMS Bolt Load Cell
The BoltSafe CMS (Continuous Monitoring System) bolt load cell is a specialized load sensor designed for accurate monitoring of bolt loads in bolted joints. This system allows real-time tracking from a single connection point and can connect multiple sensors in a network for extensive monitoring. By using this load cell, users gain valuable insights into bolt loads, which enhance joint reliability, safety, and control while reducing installation and maintenance costs.
Advanced ASIC Technology for Precision Monitoring
Each BoltSafe load sensor is equipped with an ASIC (Application-Specific Integrated Circuit) for signal processing and digital communication, providing every sensor with a unique serial number for traceability. Alongside bolt load measurement, the system can monitor sensor temperature, offering a complete data set for monitoring conditions. BoltSafe load cells are available in two types of steel—standard stainless and high-strength variants that withstand 15% more load while maintaining a compact size.
Applications in Structural Health Monitoring and Temporary Construction
BoltSafe load cells are also used in temporary constructions and structural health monitoring. Acting like a washer, the load cell measures load levels to prevent collapses and other structural failures. Available in sizes from M12 to M72 and 7/8” to 2-3/4”, it is typically installed on the non-driven side of the connection, under a nut, where it senses deformations from applied force. These changes alter electrical resistance, allowing real-time load data to be recorded. The rugged design of the load cell withstands harsh environments, including oil, seawater, and extreme weather, and operates effectively between -40 and 80 degrees Celsius. Pre-calibrated at the factory, BoltSafe load cells require no further calibration if used as specified.
Advantages of Continuous Monitoring
Continuous monitoring with the CMS load cell allows users to track bolt load directly while the cell is in use. In addition to real-time insights, historical data is accessible, making it easier to pinpoint when and where bolt load issues might have arisen. Networked CMS load cells facilitate broader monitoring, enabling data from multiple sensors to be managed collectively and remotely.
Readout Options for the CMS Bolt Load Cell
The CMS load cell is compatible with multiple readout options to suit various monitoring needs:
1. Handheld Reader: A quick, cable-connected solution for on-the-spot bolt load readings.
2. Network with PDI and PDI-NT: The CM-1000 box with PDI connects multiple sensors to a Windows PC, while the standalone PDI-NT display option doesn’t require a PC. Both systems support monitoring up to 256 interconnected CMS sensors.
3. RS-232 and Analog Converter: Suitable for monitoring single sensors and provides analog output. It includes a relay function for setting load threshold alarms.
4. IoT-Node for Remote Monitoring: The IoT-node uses LoRaWAN technology to transmit data to a cloud server, enabling remote access from any device with internet connectivity. Each load cell sensor requires a separate IoT-node for connectivity.
These varied options make the CMS load cell a versatile and efficient tool for continuous bolt load monitoring across multiple applications.
