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330450 High-Temperature Acceleration sensor (HTAS)
The 330450 HTAS segregates the sensing element from the signal conditioning electronics, with the two permanently connected via a hard-line cable. This allows the sensing head to be mounted on surfaces with temperatures as high as +400°C ( 752°F), while the signal conditioning electronics can be installed in a cooler location. |
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» Hermetically Sealed, 20 Pin LCC or J-Lead
» Small Size 0.350"sq. x 0.10"
» Light Weight: 0.62 g (0.68g J-Lead)
» +5V Operation
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Measurement Specialties has almost 20 years experience designing and manufacturing silicon MEMS suppliers of accelerometers. Most of these miniature products offer internal gas damping or mechanical overload stops to improve survivability. New products such as the Model 64 are built on Measurement Specialties second generation MEMS technology are SAE J211-compliant for anthropomorphic dummy testing.
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MODEL 1010 - DIGITAL ACCELEROMETER
SENSOR:
Capacitive Micromachined
Nitrogen Damped
Hermetically Sealed
• Digital Pulse Density Output
• Internal Temperature sensor specifications
• Fully Calibrated
• Responds to DC & AC Acceleration
• -55 to +125 °C Operation
• +5 VDC, 2mA Power (typical)
• Non-Standard g Ranges Available
• Integrated Sensor & Professional amplifier
• LCC or J-Lead Surface Mount Package
• Serialized for Traceability
• TTL/CMOS Compatible
• No External Reference Voltage
• Easy Interface to Microprocessors
• Good EMI Resistance
2g, 5g, 10g, 25g, 50g, 100g, 200g, 500g
MODEL 1210-ANALOG SURFACE MOUNT ACCELEROMETER
SENSOR:
Capacitive Micromachined
Nitrogen Damped
Hermetically Sealed
• ±4V Differential Output or
.05 to 4.5V Single Ended Output
• Fully Calibrated
• Responds to DC & AC Acceleration
• -55 to +125 °C Operation
• +5 VDC, 7mA Power (typical)
• Non-Standard g Ranges Available
• Integrated Sensor & Amplifier
• LCC or J-Lead Surface Mount Package
• Serialized for Traceability
2g, 5g, 10g, 25g, 50g, 100g, 200g, 500g
MODEL 1221 - ANALOG LOW NOISE ACCELEROMETER
SENSOR:
• Low Noise: 2ug/(root Hz) typical for
2g Full Scale Version
• Internal Temperature Sensor
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The D.Electron 3-axial acceleromter has been designed to be the transducer of a motion control system capable of eliminating unwanted floxures and oscillations of a system tool.
While the standard position detector cannot measure the real tool-tip position, it could be the nearer transducer to the tip of the tool.
Novelty of the D.Electron 3-axial accelrometer is the possibility of being connected to any motion control system (not only D.Electron Z32 CNC): its output is coded as a standard professional encoder output.
The accelerometer has been designed for real-time applications, with extremely fast A/D conversion and maximum output delay below 1 mcro-second. |
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3 Axis Acceleration Sensing
• Capacitive Based Nitrogen Damped Sensors
• ± 4V differential or +4 V Single Ended Outputs
• Low Power Consumption
• -55 to +125 °C Operation
• +5 V DC Power
• 8 Wire Connection
• Responds to DC & AC Acceleration
• Hermetic Capacitive sensors
• Non Standard G Ranges Available
DESCRIPTION
The Model 2422 triaxial accelerometer module combines three orthogonally mounted Model 1210 integrated suppliers of accelerometers in an anodized aluminum case for measuring accelerations in commercial/industrial environments. It is tailored for zero to medium frequency instrumentation applications. Each of the three internal accelerometers contains a miniature, hermetically sealed, micromachined capacitive sense element and a custom integrated circuit sense professional amplifier. It is relatively insensitive to temperature changes and gradients and its frequency response includes DC.
• Rugged Anodized Aluminum Case
• No External Reference Voltage Required
WWW.SILICONDESIGNS.COM |
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- High performance series;servo-accelerometers with analogue or digital output.
- Low cost series, open loop capcitance |
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High output together with minimal susceptibility to strain induced error
extends the measurement range of the A/21 down to the 10-5g, 10-1Hz region.
The A/21 application area thus includes low level, low frequency dynamic analysis as occurs in the civil and marine engineering fields.
The KONIC sensing element, all welded construction, and total absence of epoxies and soldered connections maximises sensitivity /mass ratio (3pC/gm), reliability, and operating temperature. |
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Ultra high output, multiple shear plate vibration transducer. Shear plate
construction provides near total isolation from mechanical inputs other than acceleration, thus safeguarding measurement integrity in applications where vibration is accompanied by high dynamic strain levels.
Generalising, these conditions are prevalent where modal frequencies are low, and are thus associated with vibration surveys of large structures.
Transducers exhibiting significant strain response may operate more akin to strain gauges at low frequency excitation and their use is thus to be discouraged ! System noise level of 10-3pC is equivalent to 1µg.
This should be realizable with bandwidth restricted to 1kHz. |
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This ultra small vibration transducer (0.25 gram!)provides
virtual transparency applied to lightweight
structures, allied to relative freedom from strain
induced error. The reliability and performance
criteria applied to our transducers generally,
welded electrical connections and case professional seal, are
fully implemented in the construction of the
A/28/E.
Signal outlet is via a
surface contact socket.
A 0.8mm dia. softline cable is available
specifically for the A/28/E. |
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Micro-miniature triaxial vibration transducer comprising three shear plate. A/28/E inserts bonded orthogonally into a hard anodised aluminium housing.
The inserts are electrically insulated, individually and from the housing, thus
eliminating ground loop interference. The additional mechanical isolation implicit in the construction provides also near elimination of strain induced error.
The spatial response of a structure to dynamic forcing may lead to erroneous single axis vibration or shock measurement, due to the
inherent directional property of the transducer.
In cases where this is deemed to be a problem, an orthogonal three axis measurement, allowing computation of absolute value and direction offers a solution. |
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Sub-miniature, all welded, KONIC sensing element based vibration transducer. The low mass of the A/25/E renders it transparent in the vast majority of lightweight structure vibration measurement applications.
The A/25/E is professional adhesive mounted. A detachment tool is provided to shear adhesive joints. Shock removal is to be avoided as being deletorious to
the integrity of the transducer.
Abrasive cleaning of the attachment face will reduce base thickness over time, sparing use of adhesive will aid longevity. Signal outlet is via a surface contact socket. Mating connector manufacturer preload torque should be 7cNm, the locknut tightened to 12cNm for signal integrity to 10,000g. Insufficient preload may result in intermittent signal loss. |
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A three variant range of low mass (2gm.)
accelerometers, each with KONIC sensing
element, welded construction, miniature (3.5mm
thd.) side or top entry coaxial connection, and
titanium case. The two professional adhesive mount versions
(A/124/E, A/124/TE), are provided with bonded
isolation discs to minimise ground loop
interference, whilst the top entry connector specification
version (A/124/TS) is also available with integral
mounting stud but without isolation. |
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Include modal analysis of lightweight structures and shock measurement. Low frequency multi point modal measurements are subject to
individual phase/gain errors associated with the lower corner frequency of the QVC.
The ratiometric nature of modal analysis however reduces transfer function uncertainty to the associated lower corner frequency variations of individual QVCs. |
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A three variant range of low mass (2gm.)
supplier of accelerometers, each with KONIC sensing
element, welded construction, miniature (3.5mm
thd.) side or top entry coaxial connection, and
titanium case. The two professional adhesive mount versions
(A/124/E, A/124/TE), are provided with bonded
isolation discs to minimise ground loop
interference, whilst the top entry connector specifications
version (A/124/TS) is also available with integral
mounting stud but without isolation. |
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S ub-miniature triaxial vibration transducer comprising three KONIC A/25/E inserts bonded orthogonally into a hard anodised aluminium housing.
The inserts are electrically insulated, individually and from the housing, thus
eliminating ground loop interference. The additional mechanical isolation implicit in the construction provides also near elimination
of strain induced error.
The spatial response of a structure to dynamic forcing may lead to erroneous single axis vibration or shock measurement, due to the
inherent directional property of the transducer. |
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A generic range of lightweight, KONIC sensing element based vibration transducers offering a choice of integral stud or flat base professional adhesive
attachment, and each with side or top mounted interconnector.
All welded construction maximises temperature range, reliability, and sensitivity is approximately double that of competitive equivalent mass
products. Spurious strain induced error, either via the structure or signal cable, is negligible.
Adhesive mounted versions : Abrasive cleaning of the attachment face will reduce base thickness over time, sparing use of adhesive will aid longevity. |
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General purpose KONIC vibration transducers c/w integral two wire charge/voltage converter (QVC). QVCs are energised from a current source, generate a low impedance, noise immune voltage proportional to input charge, hence acceleration, and need minimal interfacing.
QVC interface is available in several commercial vibration spectrum
analysers as well as in our own VV/04 or V4/04 signal conditioner, which provide in addition normalising, scaling, and fault detection features. |
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Lightweight triaxial vibration transducer comprising three KONIC all welded inserts bonded orthogonally into a hard anodised aluminium housing.
The inserts are electrically insulated, individually and from the housing, thus
eliminating ground loop interference. The additional mechanical isolation implicit in the construction provides also near elimination
of strain induced error.
The spatial response of a structure to dynamic forcing may lead to erroneous single axis vibration or shock measurement due to the
inherent directional property of the transducer. |
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Lightweight triaxial vibration transducer comprising three KONIC all welded inserts, each with hybrid QVC, bonded orthogonally into a hard anodised aluminium housing. The inserts are electrically insulated, individually
and from the housing, thus eliminating ground loop interference. Low impedance O/P provides a high degree of noise immunity (80dB
improvement vs. equiv. charge source device @ 50Hz) and allows use with low cost coaxialcable.
The additional mechanical isolation implicit in the construction provides also near elimination of strain induced error. All the 3x10/32 Microdot manufacturer of connectors are exiting in the same direction.
The spatial response of a structure to dynamic forcing, may lead to erroneous single axis vibration or shock measurement due to the
inherent directional property of the transducer. |
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Highest sensitivity multiple shear plate vibration transducer, intended for micro g level measuring. Virtual immunity to strain input side effects provides guarantee of low frequency measurement integrity. System noise
level of 10-2pC is equivalent to 1mg. With bandwidth restricted to 2kHz, 1 octave below resonance, noise floor should be significantly below this.
Noise level vs. upper corner frequency for the CA/04/N charge amplifier, A/800 source and nominal l0Mtr. cable is shown in Fig.1. Bear in mind that charge professional amplifier noise increases as a function of input capacitance - noise
assessment should be made with the charge amplifier input correctly terminated.
The transducer adds mass at its point of attachment to a structure, thus imposes a transparency constraint above which data corruption will be excessive. |
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| Test and measurement supplier of accelerometers are generally characterized by smaller size than industrial units and typically use a 10-32 co-axial connector manufacturers 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. |
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Acceleration sensors detect vibrations, seismic activity, inclination in static systems and linear acceleration in machines, buildings and movable goods. On the basis of a micro-electromechanic system (MEMS) this product group includes sensors with analog current- or voltage output, direct BUS-connection or adjustable switching thresholds. The modular design of the housing allows the use of JPT- or M12-connectors as well as fixed cable options as needed.
Customized design
Type Analog current or analog voltage
Acceleration +/- 1,7g
Operating voltage 10 - 30V DC
Output at 0g: 5V respectively 12mA
Output at -1,7g: 1V respectively 4mA
Output at 1,7g: 9V respectively 20mA
Threshold frequency 10Hz
Repeat accuracy Development of each sensor according to the needs of the customer. Depends on number of pieces. |
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| 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 professional 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. |
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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.
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