www.davidson.com.au - Druck Pressure Sensors

The GEM3 was developed initially to be worn by U.S. Special Operations Forces in Fort Bragg, SC and is designed for measuring and recording atmospheric pressure during parachute testing. Recorded atmospheric pressure data can be subsequently converted to altitude and rate of descent time histories for evaluating parachute performance.
Using a built-in pressure sensor, digital signal processing circuitry and internal battery pack, the unit can be pre-programmed to record ambient pressure time histories over extended time periods. Two auxiliary channels are available for peripheral inputs such as chute deployment signals or other transients during a drop test.

The GEM3 is supplied with IST’s DynaMax Suite software package for setup, PC data download, and analysis. The DynaMax software enables users to convert measured pressures to altitude above sea level (in feet or meters) and even rates of descent during air drop tests. The GEM3 is packaged in a rugged case for enduring harsh test environments.

GEM3 Specifications:
· Pressure range 4.0 to 14.8 psi
· Pressure resolution 0.023 psi ( 0.0015 atmospheres)
· Altitude range: 0 to 30,000+ feet
· Altitude resolution: Varies by altitude, typically +/-50 feet at 4000 ft to +/-130 feet at 30,000 ft
· Temperature range: -40 to +70 deg C
· Recording rate: programmable from 150 to 3200 samples per second
· Onboard memory: 4 MB
· Battery requirements: maximum of eight internal 9 volt cells, minimum of two required for operation
· Size/weight: 4.2” x 4.4” x 2.2”, 2.2lb

GEM3 Applications
· Parachute Testing
· Pressurized container testing
· Altitude chamber testing
· Unmanned airborne vehicle flight testing