The wireless HeliNav LoadMaster load sensor is a strain gauge stainless steel tension type sensor currently available in ranges of 1 to 10 Tonnes, having an overload capability of more than 150%. It has the capability of wirelessly transmitting its data to one of our compatible displays or data recorders. Data is transmitted 10 times per second in the worldwide licence free 2.4GHz frequency band, a pair of rugged inbuilt antennae ensure the sensor will not get damaged in harsh operating environments. A transmission distance of 100 metres is achievable.

The load sensor contains an internal Lithium Ion rechargeable battery. The battery can be charged from a PC USB port or from an external 11-28 VDC power supply. Depending on transmission data rates and configuration options selected, over 1000 hours battery life can be achieved. A scheduler allows the user to configure the load sensor to automatically switch on at a certain time of day then return to standby later in the day. This is useful if the sensor is to be attached in a location where it is inconvenient to keep switching on and off every day before and after use, this also allows the user to preserve battery life even further.

The load sensor also contains an inbuilt 32Mbit memory for recording load data locally when an external display or data recorder is impractical. The memory can hold up to 280 hours of data which can then be downloaded to a PC via its USB cable.

HeliNav LoadMaster is an intelligent wireless helicopter load sensor with inclinometer and accelerometer capabilities so that it can be used with large underslung loads. It is available in a range of sizes from 1 tonne to 10 tonnes. The HeliNav LoadMaster sensor is completely autonomous and can also interface to its own receiver/display mountable in the cockpit.

This makes it independent of the host helicopter’s systems, while being wireless means it does not require additional certification of the electrical systems. It also means it can be swapped from one craft to another in seconds, allowing HeliNav-LoadMaster to be shared around a fleet of aircraft. A handheld receiver/display, able to interrogate several different LoadMaster sensors, is also available for ground crew use.