Calibration Systems

Objective of Calibration

A calibrated measuring instrument is indispensable for:

  • Taking precise measurements with well-known measurement uncertainty
  • Taking measurements the results of which are commensurable
  • Granting legal security as the results of the measurements taken can be traced to the respective national calibration standards

Calibration Hierarchy

SPEKTRA Calibration Systems:

SPEKTRA CS18 Calibration Systems provides a means to cope with all requirements of traceable calibration and efficient laboratory operation in conformance with all applicable standards. Its performance, can be extended by means of optional extras and special accessories, such as possibility of integrating varied vibration or shock exciters.

Options and Accessories:

For sensor calibration and other vibrational investigation, versatile accessories for mechanical and electrical adaptation are required, e.g.

  • Small screws with diverse, metric and/or imperial threads for mounting the different sensor types onto the vibration exciter head.
  • Electrical adaptors, sensor supply, PR/bridge-amplifiers, charge amplifiers
  • Special sensor cables
  • Mechanical adapters for mounting small and large DUTs onto vibration exciter
  • Accessories for insertion of vibration into mechanical structures, e.g. stinger set

Detail

Seismic Calibration Systems

Seismic Secondary Calibration System

CS18 VLF (0.2 to 160 Hz)
  • Frequency Range: 0.2 Hz – 160 Hz
  • Amplitude: Up to 50 mm
  • Sensor mass up to 900 gram
  • Secondary calibration according to ISO 16063-21 (comparison method) of charge type, ICP®, voltage, capacitive and piezo-resistive sensors for acceleration, velocity and distance, with Sine excitation with high accuracy
  • Secondary calibration of reference standards
Detail

Seismic Primary Calibration System

CS18P Seismic

System for high quality primary calibration of seismometers, geophones and heavy vibration transducers with sinusoidial excitation

  • Frequency Range: 0.1 Hz – 400 Hz possible
  • Sensor Mass: Up to 50 kg (vertical)
  • Calibration of sensors according to ISO 16063-11 (Primary Calibration, Method 3)
Detail

CS18P VLF (0.2 to 160 Hz)
  • Frequency Range: 0.2 Hz – 160 Hz possible
  • Max. Stroke: Up to 400 mm possible
  • Calibration of heavy sensors with up to 5 kg weight (for sensors up to 20 kg on request)
  • Primary calibration of vibration sensors, calibrators and measurement systems with very high quality and performance according to ISO 16063-11 (Primary Calibration, method 3)
  • Primary calibration of laser vibrometers and reference laser vibrometers performance to ISO 16063-41
  • Primary calibration of reference standards
Detail

Shock Calibration Systems

Shock Secondary Calibration System

Pneumatic Shock Calibration System, CS18 LMS (50 m/s² to 100,000 m/s²)
  • Half sine shock excitation
  • Amplitude Range: 50 m/s² to 100,000 m/s²
  • All automatic / semi automatic operation
  • Shock duration lower than 0.1 ms…5 ms
  • Secondary calibration of shock-sensors as well as complete measuring instruments in form of a measuring chain, with very high precision and efficiency, according to ISO 16063-22 (calibration by the comparison method)
Detail

Shock-Pendulum Calibration System, CS18 LS (100 m/s² to 2,000 m/s²)
  • Amplitude Range: 100 m/s² to 2,000 m/s²
  • Shock Duration: 1 ms to 10 ms
  • Secondary calibration of shock-sensors as well as complete measuring instruments in form of a measuring chain, with very high precision and efficiency, according to ISO 16063-22 (calibration by the comparison method)
  • Secondary calibration of accelerometer standards
Detail

Hopkinson-Bar Calibration System, CS18 (V)HS (Up to 2,000,000 m/s²)
  • Amplitude Range: 100,000 m/s² to 1,000,000 m/s² (CS18 HS)

100,000 m/s² to 2,000,000 m/s² (CS18 VHS)

  • Pulse Width (Full-Sine): 50 μs (CS18 HS),  40 μs (CS18 VHS)
  • Secondary calibration of shock transducers as well as complete measuring instruments in form of a measuring chain, with very high precision and efficiency, according to ISO 16063-22 (calibration by the comparison method)
  • Secondary calibration of shock accelerometer reference standards
Detail

Hopkinson-Bar Calibration System, CS18 MS (200 m/s² to 40,000 m/s²)
  • Amplitude Range: 200 m/s² to 40,000 m/s²
  • Pulse Width (Full-Sine): 80 μs – 360 μs
  • Secondary calibration of shock transducers as well as complete measuring instruments (measuring chain) with very high precision and efficiency, according to ISO 16063-22 (calibration by the comparison method)
  • Secondary calibration of shock accelerometer reference standards
Detail

Shock Primary Calibration System

Hopkinson-Bar Calibration System, CS18P HS (Up to 750,000 m/s²)
  • Amplitude Range: 10,000 m/s² to 750,000 m/s²
  • Pulse Width (Full-Sine): 50 μs
  • Primary calibration of shock sensor transducers as well as complete measuring instruments (measuring chain) with very high precision and efficiency, according to ISO 16063-13
  • Primary calibration of shock accelerometer reference standards

Detail

Hopkinson-Bar Calibration System, CS18P MS (Up to 50,000 m/s²)
  • Amplitude Range: 20 m/s² to 50,000 m/s²
  • Pulse Width (Full-Sine): 80 μs – 400 μs
  • Primary calibration of shock transducers as well as complete measuring instruments (measuring chain) with very high precision and efficiency, according to ISO 16063-13
  • Primary calibration of shock accelerometer reference standards
Detail

Vibration Calibration Systems

Vibration Secondary Calibration System

CS18 HA (65 Hz to 500 Hz)
  • Frequency Range: 65 Hz – 500 Hz
  • Acceleration Amplitude: Up to 4,000 m/s²
  • Sensor Mass: Up to 300 gram
  • Secondary calibration of amplitude linearity according to ISO 16063-21 (comparison method) of charge type, IEPE, voltage, capacitive and piezo-resistive sensors for acceleration, velocity and displacement, with Sine excitation with high accuracy
  • Secondary calibration of reference standards
  • Calibration of vibration meters
Detail

CS18 MF (3 Hz to 10 kHz)
  • Frequency Range: 3 Hz – 10 kHz
  • Acceleration Amplitude: Up to 500 m/s²
  • Secondary calibration according to ISO 16063-21 (comparison method) of charge type, IEPE, voltage, capacitive and piezo-resistive sensors for acceleration, velocity and displacement, with Sine excitation with high accuracy
  • Secondary calibration of reference standards
  • Also available as mobile system
Detail

CS18 HF (5 Hz to 20 kHz)
  • Frequency Range: 5 Hz – 20 kHz
  • Acceleration Amplitude: Up to 400 m/s²
  • Secondary calibration according to ISO 16063-21 (comparison method) of charge type, ICP®, voltage, capacitive and piezo-resistive sensors for acceleration, velocity and distance, with Sine excitation with high accuracy
  • Secondary calibration of reference standards
  • Also available as mobile system
Detail

Vibration Primary Calibration System

CS18P HF (5 Hz to 20 kHz)
  • Frequency Range: 5 Hz – 20 kHz
  • Acceleration Amplitude: Up to 400 m/s²
  • Primary calibration of vibration sensors, calibrators and meters with lowest measurement uncertainty according to ISO 16063-11 (Primary calibration using method 3)
  • Primary calibration of laser vibrometers and reference laser vibrometers according to ISO 16063-41
  • Primary calibration of reference standard transducers

Detail

Mobile Calibration System

CV-10

Rugged, compact and easy to handle for everyday on-site calibration application. Small and light enough to take along it as carry-on luggage for field measurements.

  • Frequency Range: 7 Hz – 10 kHz
  • Max. Stroke (peak-peak): 5 mm
  • Max. Amplitude: 200 m/s²
  • Standard Signal Conditioner: DIR, ICP, CHA
  • Max. Payload: 900 g
  • Weight: below 10 kg
  • Full functionality in the protected transport case
  • Easy data processing and integration into your own company environment
  • Connectivity via WLAN / Ethernet (option)
  • Comprehensive integrated signal conditioners e.g. for PR sensors (option)

Detail

Acoustic Calibration Systems

Free-Field Calibration 125 Hz to 20 kHz, CS18 FF
  • Frequency Range: 125 Hz – 20 kHz
  • Secondary calibration of measuring microphones, sound level meters and other acoustic sensors according to IEC 61094-8 and IEC 61672
  • Periodic single qualification according to IEC 61672-3
  • Calibration of calibrators according to IEC 60942
Detail

Pressure-Chamber Calibration 31.5 Hz to 16 kHz, CS18 SPL
  • Frequency Range: 31.5 Hz – 16 kHz
  • Pressure chamber secondary calibration of measuring microphones according to IEC 61094-5
  • Pressure chamber secondary calibration of sound level meters and sound level measuring chains according to IEC 61672
  • Calibration of acoustic calibrators and pistonphones according to IEC 60942
  • Can be combined with anechoic chamber (upgrade free field calibration)
Detail

Infrasonic Calibration 0.1 Hz to 31.5 Hz, CS18 SPL-VLF
  • Frequency Range: 0.1 Hz – 31.5 Hz
  • Very low frequency calibration of pressure transducers and pressure measuring devices
  • Pressure chamber secondary calibration of measuring microphones and microphone measuring chains

Detail

Rotation Calibration Systems

Calibration System for Dynamic Rotation Rate, CS18 Gyro
  • Frequency Range: 1 Hz – 5 kHz
  • Payload up to 28 kg mm²
  • Very low cross-acceleration
  • Max. angular velocity: 5300 °/s
  • Max. angular acceleration: 2.5 · 10^6 °/s²
  • Secondary calibration of rotation rate sensors
Detail

Calibration Exciters for Acceleration

SE-09

The air-bearing SE-09 high-frequency calibration exciter is a high-tech product developed especially for the high demands of calibration laboratories and metrology institutes as well as for characterization of MEMS sensors.

  • Frequency range: DC – 50 kHz (internal reference standard 5 Hz – 50 kHz)
  • Resonance Frequency: 52 kHz
  • Max. Force: 100 N
  • Max. Displacement (peak-peak): 8 mm
Detail

SE-10

Spring-guided vibration exciter that is suitable for daily use in the calibration laboratory as well as for vibration tests.

  • Frequency Range: DC – 10 kHz
  • Max. Acceleration: 600 m/s2
  • Max. Force: 100 N
  • Max. Displacement (peak-peak): 10 mm
Detail

SE-101 RES-HA

The vibration exciter SE-101 RES-HA is deliberately operated in a certain resonance to cost-effectively generate harmonic acceleration-time signals with very high acceleration amplitudes with a compact 100 N drive. Main applications are amplitude linearity tests of sensors or vibration testing of small components at high accelerations.

  • Frequency Range: 70 Hz – 500 Hz
  • Max. Acceleration: 4000 m/s2
  • Max. Stroke: 10mm
Detail

SE-13

Air-bearing electrodynamic Vibration Exciter with mounting table for high payloads up to 50 kg. Especially developed for the calibration and testing of big and heavy low frequency seismic sensors as well as geophones.

  • Patent Pending
  • Frequency Range: 0 – 400 Hz
  • Max. Acceleration: 60 m/s2 peak
  • Max. Force: 500 N
  • Max. Displacement (peak-peak): 25 mm
Detail

SE-14

Spring-guided vibration exciter that is suitable for daily use in the calibration laboratory as well as for vibration tests.

  • Frequency Range: 0 – 8 kHz
  • Max. Acceleration: 500 m/s2
  • Max. Force: 265 N
  • Max. Displacement (peak-peak): 20 mm
Detail

APS 113-AB

Air-bearing ELECTRO-SEIS® Long Stroke vibration exciter – especially developed for the calibration and testing for low frequency sensors and sensor characterization.

  • Frequency Range: 0 – 200 Hz
  • Max. Force: 133 N (optional: 186 N)
  • Max. Displacement (peak-peak): 158 mm

Detail

APS 129

Air-bearing ELECTRO-SEIS® Long Stroke Vibration Exciter with mounting table for high payloads up to 23 kg. Especially developed for the calibration and testing of big and heavy low frequency sensors as well as for sensor characterization.

  • Frequency Range: 0 – 200 Hz
  • Max. Force: 133 N (optional: 186 N)
  • Max. Displacement (peak-peak): 158 mm

Detail

APS 500

Air-bearing ELECTRO-SEIS® Long Stroke vibration exciter with mounting table for payloads up to 3 kg. Especially developed for the calibration and testing of compact low frequency sensors and for sensor characterization at higher acceleration.

  • Frequency Range: 0 – 200 Hz
  • Max. Force: 95 N
  • Max. Displacement (peak-peak): 152 mm

Detail

APS 600

Air-bearing ELECTRO-SEIS® Long Stroke vibration exciter with mounting table for very high payloads. Especially developed for the calibration and testing of geophones and heavy seismic sensors.

  • Frequency Range: DC – 100 Hz
  • Max. Force: 215 N
  • Max. Displacement (peak-peak): 450 mm

Detail

CV-01

Portable 1-Point-Vibration Calibrator.

  • Frequency: 159,15 Hz ±0,02%
  • Acceleration: 10 m/s² ±2%
  • Displacement: 10 μm ±2%
  • Max. Payload: 150 g

Detail

Calibration Exciters for Shock

SE-201 PN-LMS

Pneumatically driven shock exciter for the amplitude range of 5 gn to 10,000 gn  to be used in calibration or test applications with larger pulse duration up to 5 ms.

  • NEW: dynamic shock pressure calibration possible
  • Min. Shock Amplitude: 5 gn (50 m/s2)
  • Max. Shock Amplitude: 10,000 gn (100,000 m/s2)
  • Pulse Duration (typically): 0.1 ms – 5 ms
  • Type of excitation: Half Sine Shock
  • Max. Sensor Mass (DUT): 80 gram

Detail

SE-210 SP-LS

Shock pendulum with integrated reference sensor and shock amplitudes up to 200 gn.

Detail

SE-220 HOP-MS

The SPEKTRA HOP-MS shock exciter is for testing and calibrating acceleration sensors as well as for environmental testing of small assemblies and parts.

  • Patent-protected Medium-shock exciter
  • for the amplitude range from 20 gn up to 4,000 gn (200 m/s2 to 40,000 m/s2).
  • This exciter provides the force impact using a piezo-actuator (patented).
  • Adjustable signal shape, amplitude, pulse width
  • This allows new possibilities to control the mechanical shock signal and with its new applications in the field of the calibration and in particular in the field of measurement and test systems (e.g. to test the shock sensibility of MEMS sensors).

Detail

SPEKTRA-SE-221-HOP-VHS

SE-221 HOP-(V)HS

The SPEKTRA HOP-VHS High-g shock exciter is determined for testing and calibrating acceleration sensors. It is specified to provide sinusoidal one period shock excitations. The HOP-VHS works according to the Hopkinson-bar principle.

  • High-shock exciter for the amplitude range up to 100,000 gn (optionally up to 200,000 gn) to be used in calibration or test applications.

Detail

Calibration Exciters for Acoustic

Pressure Generator, SQ-03

Very low frequency calibration of pressure transducers and pressure measuring devices

  • True pressure chamber calibration with an acoustic calibrator
  • Calibration of pressure transducers
  • Calibration of all established measuring microphones (capacitor and electrets microphones, …)

Detail

Compact anechoic chamber, SQ-101

Can be installed in any room without construction work

  • Frequency Range 125 Hz – 20 kHz
  • Sound Pressure Range: 64 dB – 124 dB
  • Calibration of microphones according to DIN EN 61094-8
  • Calibration of sound level meters according to DIN EN 61672
  • Periodic tests of sound level meters according to DIN EN 61672-3 (incl. electrical tests)
  • Calibration of calibrators according to DIN EN 60942

Detail

Electro-Acoustic Coupler, SQ-4.2

True pressure chamber calibration with an acoustic coupler

  • Frequency Range: 31.5 Hz – 16 kHz
  • Sound Pressure Level: 64 dB – 124 dB
  • True pressure chamber calibration
  • Calibration for 1/2 and 1/4 inch microphones (1 inch microphones on request)

Detail

Electro-Acoustic Coupler, SQ-4.1

True pressure chamber calibration with an acoustic coupler

  • Frequency Range: 31.5 Hz – 8 kHz
  • Sound Pressure Level: 64 dB – 94 dB
  • True pressure chamber calibration
  • Calibration for 1 inch microphones

Detail

Calibration Exciters for Pressure

Dynamic Pressure Exciter, DPE-02 (22 MPa to 420 MPa)

Generates pressure shock impulses with low pulse duration (<2 ms)

  • Amplitude: 22 MPa – 420 MPa
  • Shock Duration: 0.5 – 2 ms
  • Medium: Oil
  • Realization of all automatic calibrations according to own test regime (up to 1 shock/s)
  • User-friendly and efficient
  • Upgradeable to a shock acceleration calibration device
  • Dynamic calibration of pressure sensors
  • Dynamic tests of pressure sensors

Detail 

Dynamic Pressure Exciter, DPE-01 (100 Pa to 16 kPa)
  • Pressure Range: 12 kPa
  • Frequency Range: 10 Hz – 2 kHz
  • Amplitude: 100 Pa to 16 kPa
  • Medium: Air

Detail

Calibration Exciters for Rotation

Dynamic Rotation Exciter, DRE-01

Used for calibration of transducers as well as for the characterization of devices (e.g. MEMS sensors).

  • Frequency Range: 1 Hz – 5 kHz
  • Payload up to 28 kg mm²
  • Very low cross-acceleration
  • Max. angular velocity: 5300 °/s
  • Max. angular acceleration: 2.5 · 10^6 °/s²
  • Distortion Factor (Angular Velocity): <3 %
  • Electro-dynamic Drive

Detail

Power Amplifiers

APS-125

500 VA power amplifier for low-frequency vibration exciters

  • 500 watt power amplifier for modal shakers and environmental analysis
  • DC coupled amplifier
  • Voltage and power mode
  • Fitted to suit the vibration exciters APS 113, APS 129 and APS 500
  • Safety appliances fitted to used exciter

Detail

APS-145

800 VA power amplifier for low-frequency vibration exciters

  • 800 watt power amplifier for modal shakers and environmental analysis
  • DC coupled amplifier
  • Voltage and power mode
  • Fitted to suit the vibration exciters APS 400, APS 420 and APS 600
  • Safety appliances fitted to used exciter

Detail

PA14-500

Developed to drive any type of exciter requiring a 500 VA power amplifier

  • 500 watt power amplifier
  • Range of Use: R&D, environment testing laboratories, universities
  • Safety appliances fitted to used exciter
  • Fitted to suit the SE-09 and SE-11

Detail

PA14-180

Developed to drive any type of exciter requiring a 180 VA power amplifier

  • 180 watt power amplifier
  • For calibration and testing systems
  • Such as the SPEKTRA calibration system CS18 MF
  • Fitted to suit the SE-10

Detail

Options and Accessories

CAL-Q-U-ICP
  • Calibration of signal conditioners (payload-, IEPE-, measuring amplifiers); In conjunction with the optional extra PHASE also applicable to PHASE calibration of signal conditioners

  • Optional extra CAL-Q-U-ICP is available for each of the CS18 calibration systems. This complementary set of hardware and software enables charge, voltage and IEPE amplifiers as well as microphone pre-amplifiers to be calibrated with respect to amplitude and phase.

Detail

PR-Measurement
  • Signal conditioners and software for PR-sensors;

    PR signal conditioner power supply of piezo-resistive (bridge), variable capacitance and similar sensors used with the CS18 calibration system

Detail

Laser Vibrometers
  • Calibration of laser vibrometers

    Optical components and software for calibration according to ISO 16063-41

  • All primary calibration systems by SPEKTRA include a laser vibrometer standard traced back to PTB and so are suited to the calibration of laser vibrometers and digital laser vibrometer standards.

Detail

Sensor Supply Internal
  • Provides proper connection of several kinds of sensors to a voltage input of a measurement device (here: CS18 VCU). Sensor is plugged in at input. Signal output is connected to CS18 VCU input. Provides DC supply voltage(s) for sensor and performs signal preconditioning

Detail

TRANS for CS18 VLF (primary and secondary)
  • CS18 TRANS as an optional extra to a type CS18(P) VLF calibration system for determining the transversal transfer coefficient as a function of operating angle. It is intended for operation in conjunction with an APS 129 or APS 500 air bearing long stroke vibration exciter in the frequency range between 2 Hz and 50 Hz.

Detail

Accessories Case ZK-STD
  • This case contains all important accessories which you may need for the calibration of accelerometers of the most well-known manufacturers.

Detail

Accessories Case ZK-HOP
  • This case is containing all important accessories which you may need for the calibration of shock accelerometers with the CS18(P) HS.

Detail

APS 0109
  • The APS 0109 Zero Position Controller automatically controls the zero position of a vibration exciter irrespective of its load. It is essential to employ a position controller of type APS 0109 especially when working with an air-bearing vibration shaker without any integrated automatic load-compensation

Detail

Attenuator, ATS-15
  • Part of electrical final test and calibration bench
  • Division Ratio: 1:1, 1:8, 1:64, 1:512
  • Frequency Range: 0 Hz – 100 kHz
  • Accuracy: Up to 0.015 %
Detail

Adapters and Cables:
  • Mounting & Adhesive Mounting Adapters
  • Adapter Sets and Plates
  • Cables
  • Connectors
  • Mounting Studs and Bushings
  • Other (Test Thread and Zero Position Spacer)

Detail

CS18 Calibration Software

Every good hardware needs to be complemented by software with the necessary high performance.

The CS18 software was created in close cooperation with the SPEKTRA Calibration laboratory accredited by DAkkS. It meets the demands of every efficiently operating calibration laboratory already in its basic configuration and can easily be adapted to the workflows of any company.
  • Simple to operate
  • Integrated sensor database
  • Data export to Word®, Excel®, …
  • Automation interface
  • Calibration database server (Optional)
  • Interface to foreign databases (Optional)
  • Calibration of digital sensors (e. g. DTI)

Modes for Vibration Calibration Systems include: 

  • Sine calibration: Calibration of acceleration sensors and velocity sensors with sinusoidal excitation at fixed frequencies
  • Sweep: Excitation with continuously varied sinusoidal signals – determination of transfer function of sensors (to detect any resonances and discontinuities)
  • Measurement: Calibration of vibration calibrators
  • Signal generation: Calibration of vibration measuring instruments with indicators of their own

Modes for Shock Calibration Systems include:

  • Shock calibration: Calibration of acceleration sensors with shock-type excitation. Enables automatic performance of calibration on SPEKTRA Shock exciter.

Modes for Acoustics Calibration Systems include:

  • Microphone calibration (free-field): Calibration of complete microphones andmicrophone cartridges with sinusoidal excitation in an anechoic chamber (freefield conditions)
  • Calibration of sound level meters (pressure): Calibration of sound level meters by means of a pressure chamber(pistonphone, acoustic calibrator, acoustic coupler)
  • Microphone calibration (pressure): Calibration of microphones by means of a pressure chamber (pistonphone, acoustic calibrator, acoustic coupler)
  • Calibration of sound level meters (freefield): Calibration of sound level meters with sinusoidal excitation in an anechoic chamber (free-field conditions)
  • Calibration of acoustical calibrators: Calibration of acoustical calibrators or pistonphones by means of a reference calibrator (substitution method)

Modes for any other measurands include:

  • Tailor-made software solutions to special problems with the aim of integrating them seamlessly into your CS18 system. Examples of possible problems are calibration of dynamic force and rotational speed.

Detail