May 09, 2003
SCA61T Series - The most accurate MEMS inclinometer in the world
SCA61T Series - The most accurate MEMS inclinometer in the world
Based on the proven MEMS technology, and highly integrated electronics, VTI Technologies has developed a new inclinometer/accelerometer component family. The versions of the new SCA61T Series are equipped with internal temperature measurement and compensation, enabling additionally external compensation. This together with a long term stability better than 0.25mg enables extremely high accuracy over the temperature range -25...85°C. Maximum offset error guaranteed in -40...125°C, without additional compensation, is less than 15mg for a +/-1g sensor.
The new sensor not only has an analogue output with wide load drive capability, but also includes a digital SPI output, over which both acceleration/inclination and temperature can be read. The resolution of the analogue signal is 40µg in 8 Hz bandwidth, and the digital resolution 0,05%/FS. The SPI interface also enables field calibration to compensate e.g. mounting errors.
In addition to continuous internal interconnection failure monitoring, the proof mass deflection self test can be externally activated. This makes external failures, as short or open circuits easily detectable too. As all other VTI products the SCA61T Series are pick-and-place mountable, and reflow solderable SMD DIL-8 components. They are completely lead free, and thus environmental friendly.
The first available products in the SCA61T Series are SCA61T- FAHH1G (4 V/g) and SCA61T- FA1H1G (2 V/g) (1g = 9.82m/s2) being able to measure up to +/-0.5g (+/-30°) and +/-1g (+/-90°) respectively. Being designed for accurate inclination measurements, these products show excellent reliability and performance also in a harsh industrial environment. They typically have a zero point temperature dependence less than 2mg (0.1°) in 0...70°C, and 4mg (0.2°) in -25...85°C. These errors can be individually compensated for, to reach highest accuracy.
In instrument applications the final accuracy is limited by the noise level of 15µg/ Hz. The sensors are insensitive to vibrations due to the overdamped sensing elements. These extremely accurate sensors can withstand mechanical shocks of more than 20 000g.
Based on the proven MEMS technology, and highly integrated electronics, VTI Technologies has developed a new inclinometer/accelerometer component family. The versions of the new SCA61T Series are equipped with internal temperature measurement and compensation, enabling additionally external compensation. This together with a long term stability better than 0.25mg enables extremely high accuracy over the temperature range -25...85°C. Maximum offset error guaranteed in -40...125°C, without additional compensation, is less than 15mg for a +/-1g sensor.
The new sensor not only has an analogue output with wide load drive capability, but also includes a digital SPI output, over which both acceleration/inclination and temperature can be read. The resolution of the analogue signal is 40µg in 8 Hz bandwidth, and the digital resolution 0,05%/FS. The SPI interface also enables field calibration to compensate e.g. mounting errors.
In addition to continuous internal interconnection failure monitoring, the proof mass deflection self test can be externally activated. This makes external failures, as short or open circuits easily detectable too. As all other VTI products the SCA61T Series are pick-and-place mountable, and reflow solderable SMD DIL-8 components. They are completely lead free, and thus environmental friendly.
The first available products in the SCA61T Series are SCA61T- FAHH1G (4 V/g) and SCA61T- FA1H1G (2 V/g) (1g = 9.82m/s2) being able to measure up to +/-0.5g (+/-30°) and +/-1g (+/-90°) respectively. Being designed for accurate inclination measurements, these products show excellent reliability and performance also in a harsh industrial environment. They typically have a zero point temperature dependence less than 2mg (0.1°) in 0...70°C, and 4mg (0.2°) in -25...85°C. These errors can be individually compensated for, to reach highest accuracy.
In instrument applications the final accuracy is limited by the noise level of 15µg/ Hz. The sensors are insensitive to vibrations due to the overdamped sensing elements. These extremely accurate sensors can withstand mechanical shocks of more than 20 000g.