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Model 122A21
Helium Bleed, ICP® Dynamic Pressure Sensor
Installation and Operating Manual
For assistance with the operation of this product , contact the Pressure
Division of PCB Piezotronics, Inc.
Division toll-free 888-684-0015
SM
24-hour SensorLine 716-684-0001
Fax 716-686-9129
E-mail pressure@pcb.com
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Warranty, Service, Repair, and Return Policies and Instructions The information contained in this document supersedes all similar information that may be found elsewhere in this manual. Total Customer Satisfaction – PCB recommended as this helps build Piezotronics guarantees Total Customer confidence in measurement accuracy and Satisfaction. If, at any time, for any acquired data. Equipment calibration reason, you are not completely satisfied cycles are typically established by th
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Materials Authorization (RMA) PCB for a complete statement of our Number. This RMA number should be warranty. Expendable items, such as clearly marked on the outside of all batteries and mounting hardware, are not package(s) and on the packing list(s) covered by warranty. Mechanical accompanying the shipment. A detailed damage to equipment due to improper account of the nature of the problem(s) use is not covered by warranty. being experienced with the equipment Electronic circuitry failur
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OPERATION MANUAL FOR 1 MODELS 122A, 122A21, 122A22, and 122A24 HELIUM BLEED PRESSURE SENSOR 1.0 INTRODUCTION The series of sensors described in this guide is designed to measure dynamic pressure in intense thermal environments typified by rocket engine combustion chambers. These sensors feature acceleration-compensated piezoelectric pressure probes, mounted in a conical end seal helium bleed adaptor. The helium gas, applied from a 1500 psi source, is metered by a built-
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OPERATION MANUAL FOR 2 MODELS 122A, 122A21, 122A22, and 122A24 HELIUM BLEED PRESSURE SENSOR 3.0 INSTALLATION 4.0 OPERATION Prepare mounting port in accordance with 4.1 CHARGE OUTPUT MODEL instructions on installation drawing 122-1010-90. 122A Inspect the mounting port for burrs and tool marks at For the 122A Charge Output Model, it is only the conical seal surface. necessary to select the proper range on the charge amplifier and proceed with the measurement. NOTE:
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OPERATION MANUAL FOR 3 MODELS 122A, 122A21, 122A22, and 122A24 HELIUM BLEED PRESSURE SENSOR 5.1 CHARGE MODEL 122A 4.3 OPERATION - ICP MODELS 122A21, A22, and A24 To calibrate this model, install in pressure port of dead weight tester and apply various static pressures Consult Guide G-0001B for a complete description of recording corresponding outputs at each pressure of the low-impedance concept in instrumentation. interest. All PCB power units designed for ICP us
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OPERATION MANUAL FOR 4 MODELS 122A, 122A21, 122A22, and 122A24 HELIUM BLEED PRESSURE SENSOR 6.0 GROUND ISOLATION All sensor probes in this series are mounted in an "OFF GROUND" configuration. That is, the probe body is electrically insulated from the sensor outer body to avoid ground loops. 7.0 MAINTENANCE AND REPAIR The sealed construction and miniature size of these sensors make field repair impractical. The helium filter element should be cleaned should the flow r
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OPERATION MANUAL FOR 7 MODELS 122A, 122A21, 122A22, and 122A24 HELIUM BLEED PRESSURE SENSOR Test Report Helium Flow Test and Burst Test Sensor Model ________________________ S/N __________________________ Initial Calibration: Input (PSI) 500 1000 1500 2000 2500 3000 System Output (V) Burst Test to 5000 PSI - Failed Final Calibration: Input (PSI) 500 1000 1500 2000 2500 3000 System Output (V) Helium Flow Test: Input Pressure _________ P
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