|
|
When masses in motion get out of control, they are highly dangerous. To ensure that they remain under control, their state has to be monitored and measured. SCHMIDT® acceleration sensors and SCHMIDT® vibration monitors offer reliable collection and processing of data for safe operations.
Measurement quantity
* Acceleration
* Vibration
Field of application
* Machinery
* Test equipment
* Automotive technology
* techn. equipment
Example of application
* Machine monitoring and diagnosis
* Vibration analysis
* Imbalance detection in engines, generators, turbines, centrifuges, fans, rapidly-rotating machinery.
|
|
The highly sensitive vibration sensors of our GEO series offer a surprisingly high sensitivity over a wide frequency range down to 8Hz (4Hz). They are especially suitable for detecting vibrations in machines and electronic circuitry or in the working environment, as well as monitoring compliance with (official) exposure limits.
In addition to regular monitoring, thanks to their high sensitivity, these probes can also be used as geofone to measure ground motion (displacement).
In conjunction with our SPECTRAN 50xx series spectrum analyzers and our free PC analyzer-software "LCS", the entire frequency range between 8Hz (4Hz) and 1kHz can be analyzed, monitored and documented. Long-term recording for days or even weeks is not a problem at all, either. These sensors are equipped with a 1m SMA cable (similar with the one used with our test-antennas), allowing direct connection to the high-sensitivity signal input of our SPECTRAN EMC-Analyzer.
|
|
|
The basis for the QG sensors is a micro machined capacitive sensing element in silicium (MEMS). Despite the high accuracy this element has a very high shock resistance; a sensor with a 1G full scale sensitivity can withstand shocks up 20.000G ! The capacitance levels are transformed with an integrated amplifier to analogue voltage levels. A range of I/O configurations are possible with the modular setup of complementary circuits inside the sensor. All QG sensors benefit from the robust QUADRO® (PDF) housing.
|
|
Low Speeds, High Temperatures and Most Everything in Between
With a large selection of case-mounted sensors to choose from, we can provide condition monitoring sensor systems for more applications and machine types than ever before.
|
|
|
Test and measurement accelerometers are generally characterized by smaller size than industrial units and typically use a 10-32 co-axial connector to connect to measurement equipment. While they are sometimes used in industrial environments for machinery vibration collection, they are usually used in laboratories and similar environments. Modal and structural testing are the typical applications for test and measurement sensors.
|
|
|
|
|
|
Series 3501 and 3503 MEMS high amplitude shock accelerometers from PCB Piezotronics (PCB®) represent state-of-the-art industry technology for miniature, high-amplitude, DC response acceleration sensors, capable of measuring long duration transient motion, as well as responding to and surviving extremely fast rise times typical of a high-G shock event. Both a packaged and a OEM configuration are offered to fulfill a variety of installation requirements.
The air-damped acceleration sensing element, which is micro-machined from silicon, is manufactured with the latest advances in etching techniques and equipment. This tiny element measures just 2.5 x 1.7 x 0.9 mm (l x w x h) and incorporates a seismic mass, protective overrange stops, and a full-active, piezoresistive Wheatstone bridge.
Series 3501 and 3503 are intended to fulfill the most demanding aerospace, industrial and commercial application requirements. Their design concepts were born from more than 20 years of PCB® expertise in very high G shock (> 20,000 G) measurement applications and sensor development. Our design team has the most experience in the world for these applications. Our process engineers utilized the latest and most sophisticated techniques and equipment to achieve the desired performance levels that previously have not been attainable.
|
|
|
|
|
|
|
Description: The MiniSense 100 is a low cost cantilever-type vibration sensor loaded by a mass to offer high sensitivity at low frequencies. Pins are designed for easy installation and are solderable. Horizontal and vertical mounting options are offered. The active sensor area is shielded for improved RFI/EMI rejection. Rugged, flexible PVDF sensing element withstands high shock overload. Sensor has excellent linearity and dynamic range, and may be used for detecting either continuous vibration or impacts. The mass may be modified to obtain alternative frequency response and sensitivity selection (consult factory). The MiniSense 100 acts as a cantilever-beam accelerometer. When the beam is mounted horizontally, acceleration in the vertical plane creates bending in the beam, due to the inertia of the mass at the tip of the beam. Strain in the beam creates a piezoelectric response, which may be detected as a charge or voltage output across the electrodes of the sensor. The sensor may be used to detect either continuous or impulsive vibration or impacts. For excitation frequencies below the resonant frequency of the sensor, the device produces a linear output governed by the "baseline" sensitivity. The sensitivity at resonance is significantly higher. Impacts containing high frequency components will excite the resonance fre-quency, as shown in the plot above (response of MiniSense 100 to a single half-sine impulse at 100 Hz, of amplitude 0.9 g). The ability of the sensor to detect low frequency motion is strongly influenced by the external electrical circuit.
|
|
|
|
|
|
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.
|
|
Model 350A13
Shock, quartz-shear, ICP® accel., 0.5 mV/g, 10k g range, LP filter, 10-32 top conn.
Sensitivity: (±15%) 0.5 mV/g (0.051 mV/(m/s²))
Measurement Range: ±10000 g pk (±98000 m/s² pk)
Frequency Range: (±10%) 0.4 to 7500 Hz
Weight: 0.63 oz (17.9 gm)
|
|
|
We offer a wide range of vibration sensors for the most demanding applications, including EEx. Acceleration sensors, velocity sensors, displacement sensors. For advice on the correct sensor and installation accessories, we recommend that you discuss your specific application with our specialists to ensure the correct solution.
|
|
The most popular and environmentally friendly motion and vibration sensors are the AU2400 and AU2401 series. Being gold plated, they have a superior contact surface.
A new version of motion and vibration sensors is the AG2400 and AG2401. For these the gold plating has been replaced by silver for less critical applications in order to reduce cost.
The motion or vibration sensors are %u201Cchange of state%u201D sensors; that is the contacts may be open or closed in any position but upon movement or vibration the contacts will change state intermittently.
The contact capacity is 24 Vac/dc, at 0.20 amps max and 5VA max.
Several different electrode configurations exist for hole and surface mounting.
|
|
|
The MTI-2100 Fotonic Sensor is a high-resoulution fiber optic based vibration/displacement sensor with extremely high frequency response. The system offers a bandwidth up to 500 kHz and resolution to 0.01 microinch (2.5 Angstrom).
|
|
Model 626A04
Seismic, low frequency, ceramic flexural ICP® accel, 10 V/g, 0.03 to 500 Hz, top exit, 2-pin conn.
Broadband Resolution: (1 to 10000 Hz) 0.5 µg (5.0 µm/s²)
Electrical Connector: 2-Pin MIL-C-5015
Electrical Connection Position: Top
Weight: 22 oz (624 gm)
Model 626A34
Seismic, low frequency, ceramic flexural ICP® accel, 10 V/g, 0.03 to 500 Hz, top exit, 3-pin conn.
Broadband Resolution: (1 to 10 kHz) 0.5 µg (5.0 µm/s²)
Electrical Connector: 3-Pin MIL-C-26482
Weight: 22 oz (624 gm)
|
|
4-20 mA Vibration Sensors
Output signal proportional to overall vibration, peak or RMS
Vibration data for direct interface to existing PLC or DCS networks
Process Control applications
Vibration trending for basic Condition Based Monitoring applications
|
|
General purpose vibration transducers with the following attributes : KONIC sensing element providing 28/42pC/g signal from 17/27gm wt. transducer.
All welded construction including signal connections maximises longevity under adverse operating conditions.
Relative freedom from strain induced error reduces low frequency measurement uncertainty
|
|
|
And' Sistem of Linear Calibration Compact for measures of mouvement and calibration of blots tools, CMM or tables XY. The Software allows the operator to collect automatically the data of linear positioning in agreement with the several international Standards comprised ISO, VDI and automatic B5.Compensazione ASTHMA of Temp. Material, Temp. and Pressio_ of Air. Field 15m (opzione50m). Precision 1ìm/m (1ppm)
|
|
The choice of the correct measuring pick-up or sensor has a significant influence on the quality of a measurement. This is why Hofmann offers a wide range of sensors for different applications:
* Accelerometers , vibration velocity sensors and shaft vibration sensors
* Speed sensors
* Sensor for the measurement of relative expansions
* Sensor for the measurement of absolute positions
Certain sensors are approved for Ex-zones.
|
|
|
|
|
|
The SOLID transducers are piezo-electric accelerometers of compression type, each individually tuned. Enhanced electronics and improved ambient characteristics deliver excellent performance in a very large area of applications.
The SOLID transmitters provide a 4-20 mA output signal proportional to the vibration velocity, across its frequency range. The output signal can be transmitted to common process control systems like PLC, DCS and SCADA. The transmitters operate using power from any standard 4-20 mA loop. No additional power is necessary.
Features of the transmitters are unique micro controller design and calibration data stored in the sensor. The measuring range is 0 - 25 mm/s and the frequency range 2-1000 Hz.
The SOLID transducers and transmitters all come with top connector for fast and easy installation. A special SOLID transducer with side connector is also available for use in rough industrial environments where moist and water may cause equipment problems.
The SOLID transducers and transmitters are designed to withstand the rigors of industrial environments. Stainless, acid proof steel housings, case isolation and hermetic sealing make them very robust.
|
|
The accelerometers piezoelectric Wilcoxon pemettent the measurement of vibration on your revolving machines.
These sensors, amplified exit IEPE, associated with modules IT allow a low monitoring cost of your revolving machines or production and is also appropriate for the measurement of traditional vibration.
Family PC420 has an exit 4-20mA and are compatible with the entries automats and of the systems of monitoring or management of alarm.
|
|
MT series inertial sensors utilize solid state gyro electronics to create a powerful, low cost, and incredibly small unit. Small enough to close in your palm, MT sensors can be worn or mounted, and output 3D rate of turn and acceleration data directly into DEWESoft via USB (no other connection is required - USB also powers the MTi).
Features
* Accurate full 360 degrees 3D orientation output (Attitude and
Heading)
* Highly dynamic response combined with long-term stability
* 3D acceleration, 3D rate of turn and 3D earth-magnetic field data
* All solid state miniature MEMS inertial sensors inside
* Compact design
* High update rate
* Various digital or analog output modes
* Accepts or generates synchronization pulses
* Temperature, 3D misalignment and sensor cross-sensitivity
compensated
Fields of use
* Robotics
* Aerospace
* Autonomous vehicles
* Marine industry
* Bore industry
|
|
ShockWatch ImpactManager™ Monitors reduce damage-related costs and enable your business to operate more safely by controlling access, monitoring usage, and detecting impacts.
ShockWatch provides three versions of ImpactManager — ImpactManager RF, ImpactManager ID, and ImpactManager SC — letting you choose the monitor with the access, impact, and usage features and capabilities that best meet your needs.
|
|
Honeywell offers a complete selection with frequencies from DC to 6000Hz and full scale ranges of 5g to 2000g. Select units will survive overloads up to 500% and operating temperatures up to 500°F. Outputs include voltage, current, IEPE, mV/V, and velocity. Available in bi- and tri-axial configurations with a wide range of sizes and mounting options. Submersible units are offered. Custom engineering and design solutions available.
Contact us for a copy of our Sensors for Test and Measurement catalog.
|
|
Single Axis Servo A320
Ranges ±0.1g to ±1g, ±5Vdc output
Features
- Fully self-contained - connect to a DC power source and a readout or control device for a complete operating system
- High-level output signal
- ±1/10 g to ± 1g ranges available
- 1g bias option available to compensate for earth%u2019s
gravitational field
- Extremely rugged, withstands 1500g shock
|
|
|
Our board level Silicon MEMS Accelerometers are designed to be embedded into our customer’s vibration monitoring system. Key features of these silicon MEMS sensors include DC response, bridge output, wide measurement range, and internal gas damping. They come either in solder pads or solder pins configuration. Performance advantages of our silicon MEMS sensors are wide bandwidth, high resolution, and outstanding shock survivability.
|
|
The Model 7108A is a miniature adhesive mount IEPE accelerometer available in ±50g to ±500g dynamic ranges. The accelerometer features a welded hermetic stainless steel construction with a coaxial 10-32 top connector. The model 7108A incorporates stable piezo-ceramic crystals in annular shear mode which provide a flat frequency response up to >10kHz.
Features:
- Miniature IEPE Accelerometer
- ±50g to ±500g Dynamic Range
- Adhesive Mount, 10-32 Top Connector
- Hermetically Sealed
- Wide Bandwidth to >10kHz
- -55° to +125°C Operating Range
- Annular Shear Mode
- Ground Isolated
|
|
|
The Model 832M1 is a low cost, board mountable triaxial accelerometer. Featuring stable piezo-ceramic crystals, the accelerometer incorporates full power and signal conditioning with a maximum current consumption of 22 micro-amps. The model 832M1 is available in ±100g to ±500g ranges and provides a flat frequency response up to greater than 6kHz. The standard model 832 offers the same envelope with a lower maximum current consumption of 4 micro-amps.
|
|
Single Axis A640
Ranges ±1g to ±20g, ±5Vdc output
Features
- Ranges ±1g to ±20g
- Essentially zero temperature coefficent of
damping ratio
- Filtered and unfiltered outputs
simultaneously available
- Integral temperature compensation
- DC input - DC output
- High reliability
|
|
| ... products without technical information |
| |
|
|
