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Model 421B31
Differential charge amplifier for Dynamic acceleration sensors to be used with 10pC/g sensors
Installation and Operating Manual
For assistance with the operation of this product,
contact the PCB Piezotronics, Inc.
Toll-free: 716-684-0001
24-hour SensorLine: 716-684-0001
Fax: 716-684-0987
E-mail: info@pcb.com
Web: www.pcb.com
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Summary of Contents for PCB Piezotronics 421B31
- Page 1 Model 421B31 Differential charge amplifier for Dynamic acceleration sensors to be used with 10pC/g sensors Installation and Operating Manual For assistance with the operation of this product, contact the PCB Piezotronics, Inc. Toll-free: 716-684-0001 24-hour SensorLine: 716-684-0001 Fax: 716-684-0987 E-mail: info@pcb.com...
- Page 2 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.
- Page 3 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.
- Page 4 PCB工业监视和测量设备 - 中国RoHS2公布表 PCB Industrial Monitoring and Measuring Equipment - China RoHS 2 Disclosure Table 有害物质 镉 汞 铅 (Pb) 六价铬 (Cr(VI)) 多溴联苯 (PBB) 多溴二苯醚 (PBDE) 部件名称 (Hg) (Cd) 住房 PCB板 电气连接器 压电晶体 环氧 铁氟龙 电子 厚膜基板 电线 电缆 塑料 焊接...
- Page 5 Component Name Hazardous Substances Lead (Pb) Mercury (Hg) Cadmium (Cd) Chromium VI Polybrominated Polybrominated Compounds Biphenyls (PBB) Diphenyl Ethers (Cr(VI)) (PBDE) Housing PCB Board Electrical Connectors Piezoelectric Crystals Epoxy Teflon Electronics Thick Film Substrate Wires Cables Plastic Solder Copper Alloy/Brass This table is prepared in accordance with the provisions of SJ/T 11364.
- Page 6 Series 421B3X Differential Input Charge Amplifier Installation and Operating Manual PCB Piezotronics, Inc. 3425 Walden Avenue, Depew, New York 14043-2495 24-Hour SensorLine 716 684-0001 Fax 716 684-0987 Toll Free (USA) 1-800-828-8840 E-Mail info@pcb.com Manual Number: 70284 Manual Revision: B ECN: 54969...
- Page 7 Table of Contents Introduction ....................................3 Description ....................................3 Installation ....................................3 Wiring and Operation .................................. 4 Calculation of Gain ..................................5 Structural Diagram ..................................6 Ordering Information ................................... 7 Special Considerations ................................. 7 Use with High Temperature Sensors ............................7 ESD Warning Information ................................
- Page 8 17 pC/psi 10 Hz 5 kHz 421B30 Sensor µA/psi 100 mV/g or Accelerometer 10 pC/g 10 Hz 1 kHz 421B31 µA/g Pressure Sensor or Configurable Configurable Configurable Configurable 421B3X Accelerometer Installation Mount the base of the amplifier to a flat surface near the sensor, with the amplifier’s input as close to the sensor as possible.
- Page 9 Wiring and Operation Input Signal: • Differential Piezoelectric Sensor: Connect the sensor’s positive charge output to the positive input (IN1+) and the sensor’s negative charge output to negative input (IN2-) using low-noise cable. • Non-Differential Piezoelectric Sensor: Connect the sensor output to the negative input (IN2-) and short the positive input (IN1+) and common (Ⱶ) using low-noise cable.
- Page 10 Note: The value of the resistor must be ≤250 Ω and the input voltage (the node labeled POWER in the diagram below) must be ≥22VDC. If a larger resistor value is used, this will cause the unit to not work properly and/or will limit the maximum output current. Calculation of Gain An amplifier is selected by specifying an input sensitivity and an output sensitivity.
- Page 11 Example: An amplifier ordered with 10 pC/g input sensitivity and a 100 mV/g output sensitivity would have a gain of 100 mV/g / 10 pC/g = 10 mV/pC. Structural Diagram The amplifier structural diagram is shown below: The amplifier converts the charge-based signal from a piezoelectric transducer into a current and voltage signal.
- Page 12 • 421B30 for Use with Pressure Sensor = 421B3X-0017-P-0350-P-10-050 • 421B31 for Use with Accelerometer = 421B3X-0010-G-0100-G-10-010 Special Considerations High source capacitance may degrade the performance of the amplifier. Source capacitance is the input capacitance to the amplifier defined as transducer capacitance plus cable capacitance. If the source capacitance is increased due to a long length of cable, amplifier noise will increase and frequency response will decrease.
- Page 13 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.
- Page 14 Warranty A. Total Customer Satisfaction. PCB guarantees Total Customer Satisfaction through its “Lifetime Warranty Plus” on all Platinum Stock Products sold by PCB and through its Limited Warranties on all other PCB Stock, Standard and Special products. B. Platinum Stock Products – Lifetime Warranty Plus. Under PCB’s Lifetime Warranty Plus, if any PCB Platinum Stock Product ever fails, PCB will repair, replace or exchange the product at no charge.
- Page 15 Return Procedure To expedite returned instrumentation, contact a factory PCB Customer Service Representative for a RETURN MATERIAL AUTHORIZATION (RMA) NUMBER. When calling, please have information such as model, serial number and description of the problem available. When preparing the package for return, it is helpful to provide a written description of the symptoms and problems experienced with the equipment.
- Page 16 3425 Walden Avenue, Depew, NY 14043 All specifications are at room temperature unless otherwise specified. In the interest of constant product improvement, we reserve the right to change specifications without notice. ® is a registered trademark of PCB Piezotronics, Inc.
- Page 17 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 49931 2.76 [70.0] 2.17 [55.1] 1.77 [45.0]...
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