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4 to 20 mA output, 0.0 to 1.0 in/sec RMS, 3.5 to 2.0 kHz, top exit, 4 pin, M12 Installation and Operating Manual For assistance with the operation of this product, contact the PCB Piezotronics, Inc. Toll-free: 800-959-4464 24-hour SensorLine: 716-684-0001 Fax: 716-684-3823 E-mail: imi@pcb.com...
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Assistance is needed to safely operate equipment PCB Piezotronics is an ISO-9001 certified company whose Damage is visible or suspected calibration services are accredited by A2LA to ISO/IEC Equipment fails or malfunctions 17025, with full traceability to SI through N.I.S.T.
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CAUTION Refers to hazards that could damage the instrument. NOTE Indicates tips, recommendations and important information. The notes simplify processes and contain additional information on particular operating steps. The following symbols may be found on the equipment described in this manual: This symbol on the unit indicates that high voltage may be present.
Table of Contents Introduction ........................Page 3 General Features Dimension Drawing ......................Page 4 Operation and Wiring ...................... Page 5 Standard Wiring Taking Measurements Installation ........................Page 7 Direct Adhesive Mount Standard Stud Mount Adhesive Stud Mount Magnetic Mount ESD Sensitivity ....................... Page 11 Warranty/Servicing Warranty, Service &...
Introduction The Model 655A9X & 656A9X Series Industrial 4-20mA Sensors combine the capabilities of a piezoelectric vibration sensor and a 4-20mA vibration transmitter. The sensor outputs a 4-20mA signal that is proportional to the overall velocity or acceleration of the machinery. Ideal for monitoring the vibration of process equipment such as fans, motors and pumps, the output of the sensor is used for process control or predictive maintenance.
Operation and Wiring Standard Wiring The Model 655A9X & 656A9X Series operates from a standard 2-Wire, 4-20mA loop. If using a loop powered unit, attach the positive (+) input from the power supply to Pin 1 on the sensor and the negative (-) input from the power supply to Pin 2 of the sensor.
Installation When choosing a mounting method, consider closely the advantages and disadvantages of each technique. Typical mounting types are stud, direct adhesive, adhesive mounting base and magnetic mounting base. Since the frequency response is limited to 2 kHz on the 655A9X & 656A9X Series, any of the four methods can be used without seriously affecting the data values.
Standard Stud Mount Procedure This mounting technique requires smooth, flat contact surfaces for proper operation and is recommended for permanent and/or secure installations. Stud mounting is also recommended when testing at high frequencies. Note: DO NOT attempt mounting on curved, rough or uneven sufaces, as the potential for misalignment and limited contact surface may significantly reduce the senor’s upper operating frequency range.
Adhesive Stud Mount Procedure Adhesive mounting is often used for temporary installation or when the machine surface cannot be adequately prepared for stud mounting. Adhesives like hot glue or wax work well for temporary mounts; two-part epoxies and quick –bonding gels provide a more permanent mount. Note: Adhesively mounted sensors often exhibit a reduction in high-frequency range.
Magnetic Mount Procedure Magnetic mounting provides a convenient means for making portable measurements and is commonly used for machinery monitoring and other portable or tending applications. Note: The correct magnet choice and an adequately prepared mounting surface is critical for obtaining reliable measurements, especially at high frequencies.
Warning 2 – ESD sensitivity This equipment is designed with user safety in mind; however, the protection provided by the equipment may be impaired if the equipment is used in a manner not specified by PCB Piezotronics, Inc. Caution 1 – ESD sensitivity Cables can kill your equipment.
Customer Service IMI, a division of PCB Piezotronics, guarantees Total Customer Satisfaction. If, at any time, for any reason, you are not completely satisfied with any IMI product, IMI will repair, replace or exchange it at no charge. You may also choose to have your purchase price refunded.
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Model Number Revision: NR 4-20 MA VELOCITY TRANSMITTER 656A91 ECN #: 53239 OPTION AL VERSION S Performance EN GLISH Optional versions have identical specifications and accessories as listed for the standard model except Measurement Range(± 5 %) 0.0 to 1 in/sec rms 0.0 to 25.4 mm/s rms...
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PCB Piezotronics Inc. claims proprietary rights in REVISIONS the information disclosed hereon. Neither it nor any reproduction thereof will be disclosed to others DESCRIPTION without the written consent of PCB Piezotronics Inc. RELEASED TO DRAFTING 53239 .94 [23.8] HEX ELECTRICAL CONNECTOR...
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