IMI Sensors Receives CSA approval for High Temperature Accelerometer

Application specific solutions for Gas Turbine Monitoring

May 27, 2011, Depew, NY - IMI Sensors, a division of PCB Piezotronics, Inc., announces the CSA approval of high temperature accelerometer models EX600B13 and EX600B14 for vibration measurement in gas turbines. These high temperature accelerometers include a side-exit charge mode sensor, a 10-foot integral hermetically sealed hard-line cable and an integral ICP® charge amplifier. Possible power generation monitoring applications include placement on turbines, exhaust systems and piping in extreme heat environments up to +900°F/+482°C.

This new certification contains the following approvals:

• Ex ia IIC / AEx ia IIC: Class I, Zone 0:
• Class I, Div. 1, Groups A, B, C and D; Class II, Div. 1, Groups E, F and G; Class III, Div. 1:
• Ex nA IIC / AEx nA IIC: Class I, Zone 2:
• Class I, Div. 2, Groups A, B, C and D:

The new unique sensing element of these accelerometers provides significantly improved performance that is insensitive to base strains, thermal transients and pyroelectric effects. By incorporating an integral sensor, a cable and a charge amplifier in a single high-temperature sensor chain, gas turbine operators have a complete measuring chain that eliminates contamination and common mode noise concerns. The integral ICP® charge amplifier integrates with standard data acquisition equipment.

Sensor models EX600B13 and EX600B14 are designed as drop-in replacements for existing accelerometers with ARINC® three-point mounting bases, and have a higher temperature range than many competing sensor types. Model EX600B13 has 100 mV/g (10.2 mV/(m/s²)) sensitivity and model EX600B14 has 10 mV/g (1.02 mV/(m/s²))sensitivity. The wide frequency range of (±5%) 4.7 to 4000 Hz (282 to 240000 cpm), makes them ideal for the measurement of gas turbine vibration.

For more information please download the Combustion Dynamics Instrumentation brochure: www.imi-sensors.com/ContentImages/downloads/IMI_GasTurbine_LoRes.pdf

Or visit the IMI-Sensors site at: http://www.imi-sensors.com/Combustion.aspx

Please direct all technical inquiries to Eric Yax, Director of Sales and Marketing - Energy Division, phone: (716) 684-0002 extension 2377 or email eyax@pcb.com.

About IMI Sensors

IMI Sensors, a PCB Piezotronics Division is dedicated to addressing the machinery vibration sensing needs for condition monitoring, predictive maintenance, and process control requirements. All IMI sensors and vibration switches are designed to withstand the rigors of harsh industrial environments. Included are sensors that interface directly with vibration data collectors and analysis equipment, as well as process monitoring equipment, PLC, DCS, alarm, and SCADA systems. For more information about IMI Sensors please call us anytime at 800-959-4464, or visit www.imi-sensors.com.

About PCB® Piezotronics

PCB Piezotronics, Inc. is a global leader in the design and manufacture of force, torque, load, strain, pressure, acoustic and vibration sensors, as well as the pioneer of ICP® technology. This instrumentation is used for test, measurement, monitoring, and feedback control requirements in automotive, aerospace, industrial, R&D, military, educational, commercial, and OEM applications. From ready-to-ship stock products, to custom-made specials, PCB® proudly stands behind all products with services you value most, including 24-hour customer support, a strategic global distribution network, and the industry's only commitment to Total Customer Satisfaction. For more information about PCB® visit www.pcb.com.

# # #

PCB and ICP are registered trademarks of PCB Group, Inc.