*NOTE - Some products in the tabs below are either currently inactive or obsolete. They are displayed as examples for use in various programs and can be modified. Please contact us for additional information.
INTRODUCTION
PCB® has extensive experience with underwater vibration and unsteady, rapid fluctuating, pressure measurements. Our experience with underwater testing can be used in specific applications for measuring and identifying:
- Vibration
- Cavitation caused by unsteady pressure
- Dynamic pressure from waves
Highlights:
- Waterproof, pressure tested cables can be over-molded directly to the sensor
- ICP® voltage output or constant voltage line driver (CVLD) current output operates through long cables with low noise
- Electrical case isolation for the lowest possible noise
- Corrosion resistant construction
RAPIDLY FLUCTUATING PRESSURE, UNSTEADY FLOW,
CAVITATION & WAVE SLAP
Unsteady pressures must be measured and identified, including water flow and cavitation.
High Resolution ICP® Pressure Probe
Model S112A22
- 100 mV/psi, 50 psi
- Stainless steel
High Frequency CVLD Pressure Sensor
Model 113M231
- 50 psi, 100 uA/psi
- Emralon coated
- Integral waterproof cable
- Acceleration compensated
- Ground isolated
Subminiature ICP® Pressure Sensor
Model 105C
- 100 psi, 50 mV/psi
- Integral twisted pair cable
- SS wetted parts
- Solid end cap diaphragm well suited for cavitation measurement
VIBRATION
Shear mode accelerometers isolate the sensing crystals from the base and housing, lowering thermal transients and signal noise resulting from base bending effects. This is a very important feature when attaching them to relatively thin walled vessel hull models during wave slap applications.
ICP® Underwater Accelerometer
Model 352M221
- 10 mV/g, ±500 g
- 2nd order LP filter
- Frequency response from 1 Hz to 10 kHz
- Integral waterproof cable
Miniature Ring-style, Ceramic Shear CVLD Accelerometer
Model 355M87A
- 100 μA/g, ±50 g
- Frequency response from 7 Hz to 9 kHz
- Integral waterproof cable
- Case isolated
Triaxial, Miniature, High Sensitivity ICP® Accelerometer
Model 354M85
- 100 mV/g, ±50 g range
- Frequency response 1 Hz to 8 kHz
- Hermetic housing
Miniature Ring-style, Ceramic Shear ICP® Accelerometer
Model 355M73
- 100 mV/g, ±50 g range
- Frequency response 7 Hz to 10 kHz
- Integral waterproof cable
- Case isolated
Teardrop ICP® Accelerometer With Flexible, Integral Cable
Model 352A74
- 100 mV/g, ±50 g range
- Frequency response 1 Hz to 8 kHz
- Hermetic housing
Precision Quartz Industrial ICP® Accelerometer
Model 624B11
- 100 mV/g, ±50 g range
- Frequency response 0.8 Hz to 10 kHz
- Integral waterproof cable
- Case isolated
The Swiveler® Low Cost Industrial ICP® Accelerometer
Model 607A11
- 100 mV/g, ±50 g range
- Frequency response from 0.5 Hz to 10 kHz
- Integral waterproof cable
- Patented 360º cable orientation
- Case isolated
FORCE
ICP® Quartz Force Rings
Model 202M44
- ± 100 lbs. (0.4 kN)
- Measures dynamic excitation or reaction forces
- Integral waterproof cable
Modally Tuned® Impulse Hammer
Model 086M99
- 500 lbf, 10 mV/lbf
- Hammer mass 0.34 lbs.
- Integral waterproof cable
UNDERWATER BLAST
Piezoelectric pressure sensors also measure shock waves and bubble energy associated with underwater explosion testing. Sensors structured with volumetrically sensitive, omnidirectional tourmaline crystal and ICP® microelectronics provide a high frequency, low impedance output in underwater test environments. Waterproof cables of customer requested lengths are factory installed.
Tourmaline ICP® Underwater Blast Sensor
Series 138A
- ICP® underwater blast pressure probes
- Ranges from 1000 to 50k psi (6894 to 344,740 kPa)
- Rise time 1.5 μ sec
- Resonant frequency ≥ 1 MHz
CABLES
4-Conductor, Shielded, FEP Cable
Model 034Wxx
- Used with triaxial ICP® accelerometers
- 4-conductor, shielded, FEP jacket
- IP68 Rated 1/4-28, 4-socket plug to 3 BNC plugs
4-Conductor, Shielded, Polyurethane Cable
Model 078Wxx
- Used with triaxial ICP® accelerometers
- 4-conductor, shielded, flexible polyurethane jacket
- IP68 Rated 1/4-28, 4-socket plug to 3 BNC plugs