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unite robust construction with high efficiency and flexible connection options, while offering a broad spectrum of applications.
• Long service life through use of a special steel alloy for the casing
• Extremely good sonic yield due to use of optimized piezo transducer elements
• Standard frequencies: 25, 30, 40 and 80 to 150 kHz
Other frequencies available on request
• Multi-frequency transducers with 40, 80 and 120 kHz
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VibraBoss 100 Vibration Monitor
A robust, versatile vibration sensor for continuous monitoring of rotating equipment such as large motors, fans, conveyors, etc. Simple to install and monitor; 2-wire hookup, 10-30VDC supply, signal powered, 4-20mA analog output proportional to average vibration velocity, or optionally, displacement. Designed for monitoring equipment with rotational speeds between 200 and 2000 RPM. For rotor speeds less than 500 rpm, "displacement" is generally more significant; at speeds about 2000 RPM, "acceleration" is the parameter of choice.
A unique and important feature of the VibraBoss 100 is that it responds to "jerk" - technically the third derivative of displacement with respect to time (y''') - rather than acceleration (y''). This makes it uniquely insensitive to the earth's gravitational field, thus simplifying installation by avoiding precise alignment usually needed for other acceleration (y'') based transducers. The electronics contained in the VibraBoss*100 integrates the jerk (y''') signal and generates the desired velocity (y' ) or displacement (y) output as a 4-20mA signal. The 4-20mA signal can be monitored externally with any computer monitoring system, chart recorder, or by an optional stand alone threshold detector. Typically, an increase in the vibration signal to 0.25 in/sec can trigger a maintenance alarm, while a level of 0.5 in/sec can initiate automatic shutdown.
For security, install one sensor horizontally at each bearing. A control box with power supply, set-point relays, meter, warning strobe and alarm horn for monitoring one or more points can be supplied.
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Piezoelectric Embedded Accelerometers
Our board level Piezoelectric Accelerometers are designed to be embedded into our customer's vibration monitoring system. These sensors are used for both dynamic measurement and shock applications. They are offered in solder pads or solder pins configuration and feature very low power consumption, high frequency response and customized packages.
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Description: Piezo film’s capabilities to generate a high voltage output under bending strain, combined with its rugged form factor, make it an ideal candidate for solid state impact switches. Rather than using a switch contact closure, the piezo film generates a pulse which is detected by electronics. Although many of the DT’s, LDT’s and FLDT’s supplied by Measurement Specialties are used for switch applications, it is sometimes convenient to have a switch with integrated electronics. The SW100 is an ideal configuration for impact detection and momentary switch applications. A direct contact force on the tip of the stainless steel cantilever beam of the SW100 induces strain on the laminated Piezo Film Sensor (PFS) element. With dynamic strain, the PFS element generates an output that activates a built-in, normally-open circuit. Once activated, the circuit resembles the closure of a contact switch, but without the inherent discontinuity that contact points exhibit because of corrosion, pitting and bouncing. Thus the SW100 provides a single digital pulse that is ideal for triggering digital circuits and signal processing. The imperviousness, elasticity and reliability of the PFS element, along with the noise rejection characteristics of the circuit, combine to provide the SW100 with features that suit applications demanding consistent, reliable performance throughout tens of millions of switching cycles. Custom options are available to fit specific customer applications. For more information on the SW100, please call one of our applications engineers.
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Description: Piezo film’s capabilities to generate a high voltage output under bending strain, combined with its rugged form factor, make it an ideal candidate for solid state impact switches. Rather than using a switch contact closure, the piezo film generates a pulse which is detected by electronics. Although many of the DT’s, LDT’s and FLDT’s supplied by Measurement Specialties are used for switch applications, it is sometimes convenient to have a switch with integrated electronics. The SW100 is an ideal configuration for impact detection and momentary switch applications. A direct contact force on the tip of the stainless steel cantilever beam of the SW100 induces strain on the laminated Piezo Film Sensor (PFS) element. With dynamic strain, the PFS element generates an output that activates a built-in, normally-open circuit. Once activated, the circuit resembles the closure of a contact switch, but without the inherent discontinuity that contact points exhibit because of corrosion, pitting and bouncing. Thus the SW100 provides a single digital pulse that is ideal for triggering digital circuits and signal processing. The imperviousness, elasticity and reliability of the PFS element, along with the noise rejection characteristics of the circuit, combine to provide the SW100 with features that suit applications demanding consistent, reliable performance throughout tens of millions of switching cycles. Custom options are available to fit specific customer applications. For more information on the SW100, please call one of our applications engineers.
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Measurement Specialties has done pioneering work in the development of ultrasound sensing using Piezo film. Piezoelectric film ultrasound transmitters and receivers offer unique advantages for two-dimensional positioning applications such as:
- Digitizers
- Object detection
- Distance measurement
Piezo Sensor - 40kHz Digitizer Transmitter_Receiver
Description: Piezoelectric film (PVDF) ultrasound transmitter and receivers offer unique advantages for air ranging applications. Depending on the application, resonance frequency and vertical beam directivity of the transmitter and receiver can easily be customized by changing the diameter and length of the PVDF cylinder. The receiver has a very wide horizontal beam angle and it can be reduced by changing the housing design if necessary. PVDF transmitters and receivers also have very low resonance Q value of 5 and PVDF receivers have Q value of 4. This means that the rising time and the signal decay time are much faster than the conventional ceramic transmitters. This characteristic is suitable for high speed data acquisition or high speed digitizer applications. Cylindrical 40kHz PVDF transmitters exhibit omni-directional horizontal beam directivity and broad band characteristics. Cylindrical 40kHz PVDF receivers exhibit very wide horizontal beam directivity and broad band characteristics. These characteristics lend unique solutions in many applications such as two-dimensional positioning, digitizer, object detection, and distance measurement.
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