Tension load cell HLM-LC

beam typesingle-axisstrain gauge

Overview
The HeliNav LoadMaster wireless load sensor is a stainless-steel, strain-gauge tension sensor engineered to measure underslung helicopter loads. It provides real-time wireless transmission and local data logging for post-flight analysis. The unit uses the global 2.4 GHz band with two ruggedised internal antennas and implements forward error correction and data whitening to ensure reliable telemetry.

Key benefits

• Wireless operation for quick installation and removal between aircraft
• Radio range up to 100 m for flexible ground-crew positioning
• Sample/update rate up to 10 Hz for near real-time load monitoring
• Internal 32 MBit memory storing up to 280 hours of data for flight recording
• External supply 11–28 V (rechargeable) to integrate with aircraft power systems
• USB connection for data download to PC
• PC software provided for device configuration and data export
• Configurable automatic shutdown to conserve battery life
• Dual ruggedised internal antennas for improved link reliability
• FCC Part 15 compliant for market access
• Recorded data exportable to Excel for analysis and reporting

Compatibility & Interfaces

• Compatible with HeliNav Handheld Receiver for receiving and displaying data from multiple sensors
• Compatible with HeliNav Receiver Interface to output data via RS232/RS422 or analog/digital channels for integration with telemetry systems
• Compatible with HeliNav Cockpit Display for in-cabin or window-mounted live load indications in multiple user-selectable formats

Technical specifications

• Sensor type: strain-gauge based, stainless-steel tension sensor
• Wireless band: 2.4 GHz worldwide harmonised ISM band
• Antennas: dual internal ruggedised antennas
• Radio reliability: forward error correction and data whitening
• Transmission range: up to 100 m (line of sight, subject to environment)
• Update rate: up to 10 samples per second
• Internal memory: 32 MBit (approx. up to 280 hours of sampled data)
• Data download: USB connection to PC
• Supply: external 11–28 V (chargeable)
• Outputs (via receiver/interface): RS232, RS422, analog or digital as required
• Software: PC configuration and data-export software provided
• Standards: FCC Part 15