CRH high performance MEMS gyroscope for fibre-optic gyro replacement

PEWATRON: Outstanding stability and low noise make the CRH01 a viable and more affordable alternative to fibre-optic tuned gyros. The performance is achieved by a new MEMS ring design in Silicon Sensing’s VSG3 technology, ensuring high shock and vibration immunity. The technology uses a ring resonance effect combined with coriolis forces to precisely measure the angular rate. Additional outputs enable the gyros’ temperature and resonant frequency to be used for accurate temperature compensation.

The CRH family covers large measurement range from 400 down to 25°/s, enabling applications such as north finding, direction pointing, drilling guidance, inertial measurement units or rail transportation sensors.

A variant, model CRS39, in the same technology but with temperature range up to 110°C has been developed specifically for down-hole drilling,

Key features:

• FOG like performance
• Lowest range 25°/s up to 400°/s
• Low noise
• Low bias instability of 0.2°/hr in range 25°/s
• Excellent angular random walk 0.04°/√hr
• High shock and vibration immunity
• Small size 35x35x25mm

About PEWATRON
PEWATRON specialises in physical and geometrical sensors, power supplies and e-components. PEWATRON delivers a wide assortment of electronic components ranging from standard products, semi-custom products to custom products. PEWATRON works closely with developers and can be involved right from the start of a product development process to ensure that together with the customer, the best fitting component for the application is found.

PEWATRON, an independent company that belongs to the Angst+Pfister Group, has been serving customers in Europe with prompt and individual service for over 30 years. Through the Angst+Pfister Group, PEWATRON belongs to a world-wide network of over 750 employees and 75,000 satisfied customers.