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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.
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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.
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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)
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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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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.
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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.
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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).
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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)
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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
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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
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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.
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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.
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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.
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Ultra-Trak passively monitors ultrasounds produced by operating equipment. It can be readily connected to alarms or recorders for datalogging, thanks to its 4-20 mA current output, coupled with a pure demodulated output.
Housed in stainless steel, the rugged Ultra-Trak 750 is water resistant and dust proof which means it can be externally mounted in some of the most challenging environments. Couple this with an extraordinarily wide dynamic range of 120 dB and sensitivity adjustment, this sensor is ready to meet your most demanding sensing needs.
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ULTRASONIC CONDITION ALERT
UE SYSTEMS is pleased to introduce the new Ultrasonic Condition Alert (UCA 586)
This new sensor is economically priced and is specifically designed for contact applications.
Typical Applications:
Bearing Monitoring
Valve Leak Monitoring
Flow/No Flow
Solid Flow Detection
Electrical (arcing/tracking/corona)
Cavitation Monitor
Coal Fineness Monitor
Bearing Lubrication Failure
Gearbox Monitor
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