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Accelerometers

Universal vibration sensors for precise and reliable measurement

Industrial accelerometers - Standard accelerometers for Online Condition Monitoring Systems

Types VIB 6.12x, VIB 6.14x

• Measures vibration acceleration, shock pulse (roller bearing condition), and pump cavitation
• Tandem-piezo sensor
• Current line drive (CLD) signal amplification
• Mounting options: bonded, threaded, magnetic
• IP68 option
• EX version available

Technical data (excerpt)

• Frequency range (±3dB): 1 Hz – 20 kHz / 0.3Hz – 10 kHz
• Linearity range (±10%): 961 ms-² / 450 ms-²
• Sensitivity: 1µA/ms-² / 5.35µA/ms-²
• Resonance frequency: 36 kHz / 17 kHz

Mini sensors - Compact and economical

Types VIB 6.202

• Vibration acceleration, shock pulse, pump cavitation
• Compact design
• Space-saving cable routing
• Economically priced
• Tandem-piezo measuring element
• Current line drive (CLD) signal amplification
• Mounting options: bolted, glued, magnetic
• EX version available

Technical data (excerpt)

• Frequency range (±3dB): 2 Hz – 20 kHz
• Linearity range (±10%): 961 ms-²
• Sensitivity: 1µA/ms-²
• Resonance frequency: 30 kHz

Low-speed machinery sensor - Sensor for low frequency measurement

Types VIB 6.172

• For slowly running speeds: starting at 6 RPM (=0.1 Hz)
• ICP voltage output
• Mounting options: bolted, glued, magnetic
• ICP sensor also available with intrinsic safety

Technical data (excerpt)

• Frequency range (±3dB): 0.1 Hz – 10 kHz
• Linearity range: < 70 g (r.m.s.) (±1%)
• Sensitivity: 100 mV/g
• Resonance frequency: 17 kHz

Triax Sensors - Triaxial sensors for fast data acquisition

Type VIB 6.655 for VIBXPERT vibration analyzer and VIBSCANNER 2 data collector

• Simultaneous vibration measurement in X, Y and Z direction
• Mounting via threaded connection or magnetic adapter
• ICP voltage output

Technical data (excerpt)

• Frequency range (±3dB): 0.6 Hz – 10 kHz
• Linearity range (±10%): 50 g (peak)
• Sensitivity: 100 mV/g

VIBCODE transducer

Sensor for easy data acquisition

The intelligent sensor knows at all times where to measure and which measurement to take.

• Vibration acceleration, shock pulse, pump cavitation
• Coded measurement locations for easy data collection
• Stable connection via bayonet mount
• Reproducible results
• Tandem-piezo technology
• Current line drive (CLD) signal amplification
• Compatible with VIBSCANNER 2 and VIBXPERT II
• Measures signals on low-speed machines (>2 Hz)

VIBCODE is a smart sensor that ensures reliable data collection even by untrained operators. It recognizes each location and takes the programmed measurements fully automatically, thereby enhancing trending reliability and eliminating repeat measurements due to mixups.

The measurement stud is encoded with location number and measurement type. A special patented probe locks onto the stud to measure both vibration and bearing condition (shock pulse) with excellent signal transmission and repeatability.

Displacement sensors

Shaft vibration and displacement on rotating machinery

Inductive proximity sensor for VIBXPERT vibration analyzer

Type VIB 6.640

The inductive proximity sensor VIB 6.640 is used for contact-free measuring the gap of metallic objects within the specified range. The sensor connects to VIBXPERT vibration analysers.

• Non-contact measurement
• Easy to mount
• Broad linearity / working range

Technical data (excerpt)

• Working range Sn: 3 – 15 mm
• Max. frequency: 300 Hz
• Inductive measuring principle

Inductive displacement sensor for Online Condition Monitoring Systems

Type VIB 6.645 SET

The inductive displacement sensor VIB 6.645 SET connects to PRUFTECHNIK online systems. The sensor determines the position of metallic objects within the specified range.

• Non-contact measurement
• Easy to mount
• Broad linearity / working range
• Linear voltage signal across the entire working range
• High max. frequency
• LED adjusting indication

Technical data (excerpt)

• Linearity range: 2 – 10 mm
• Rated operating distance Se: 6 mm
• Max. frequency: 500 Hz

RPM sensors, keyphasers

Measure rotational speed and provide reference signal for order-based vibration analysis

Laser trigger / RPM sensor for data collectors

Type VIB 6.631

• Laser optical measurement
• Easy mounting and adjustment
• Large RPM measurement range
• Stable stands (accessory)
• EX version available

Technical data (excerpt)

• Measurement range: 0.1 – 600,000 RPM
• Measuring distance: 0.05 – 2 m
• Output: 5V (TTL)

Inductive RPM sensor for Online Condition Monitoring systems

Type VIB 5.992-NX

• Inductive measurement
• Easy mounting and adjustment

Technical data (excerpt)

• Measurement range: < 150,000 RPM
• Measuring distance: 2.3 – 12 mm
• Load current: 200 mA

Temperature probes

Permanent, handheld or magnetic temperature probes

Thermocouple type K Standard temperature probe for data collectors

Types VIB 8.607-1.5, VIB 8.608

• For hard-to-access measurement locations
• Magnetic mount (VIB 8.607-1.5)
• Hand-held probe with probe tip (VIB 8.608)
• Large measurement range
• EX version available

Technical data (excerpt)

• Measurement range: -50 – 240°C (VIB 8.607-1.5), -50 – 500°C (VIB 8.608)
• Precision: better 3%
• Sensor type: Thermocouple type K

Sensor accessories

Suitable accessories ensure easy and reliable measurements

• Mounting adapters and tools
• Cables, interfaces and accessories for online systems
• Cables and connecting adapters for portable instruments
• Customized solutions

The quality of a measuring system depends not only on the main components, but is also a direct result of all the system components. That is why we place high importance on optimizing the entire measuring process when developing our systems – from the sensor and signal transmission to signal processing and visualization.

Technology

Measurement precision due to state-of-the-art technology

Tandem-Piezo design

The unique features of PRUFTECHNIK’s patented Tandem-Piezo accelerometers make them suitable for virtually all types of industrial vibration applications.

The unique design practically eliminates temperature shock and base strain effects; it also handles condition evaluation of turbo machinery and gearboxes, anti-friction bearings and pump cavitation – all with the same transducer, thanks to a wide linear range and a defined shock pulse resonance characteristic at 36 kHz.

• Low base strain sensitivity, transverse sensitivity, and sensitivity to temperature transients
• High shock resistance
• Integrated resonance suppression filters avoids amplifier overloading
• Factory burn-in for high long-term stability

Current Line Drive (CLD)

The long cables used in permanently installed monitoring systems must stand up to considerable electrical and mechanical interference. With traditional sensors the signals barely get through the network, being drowned out by the noise and interference.

PRUFTECHNIK uses a line drive system, which consists of a tiny electronic amplifier built into each sensor to boost the vibration signal.

• Low sensitivity to mechanical and electrical interference (cable noise, electromagnetic sources, ground looping)
• Very long low-cost cables possible with very little signal loss
• Cable positioning during installation is not as critical
• Power supply current carried along the very same coaxial cable carrying the vibration signal (power comes from a source built into the receiver instrument).

There are two types of line drive systems, providing either voltage output or current output. PRUFTECHNIK systems use the latter due to its technological superiority, offering the following advantages:

• Much lower high-frequency loss in very long cables over 1,000 meters
• Much lower susceptibility to induced noise and ground-loop noise, also eliminating the need for insulated sensors in most cases.