Accelerometers

Big enough to meet your needs. Personal enough to care.

DJB designs, manufactures, assembles, tests and calibrates every part of their products all in-house. They export all over the world via a network of distributors.

They have been a British leader and manufacturer for over 40 years, proudly achieving a substantial range of quality accelerometers and vibration testing equipment whilst maintaining the unique Konic Shear design introduced by the company’s founder Don Birchall to better aid your needs. They all have a care for the work they do at DJB, proud of its history and keen for its future. This is reflected in the products they have available and the services provided to support you in your testing needs all the way through your process. The company’s main focus is to manufacture piezoelectric accelerometers (IEPE and Charge), dynamic pressure transducers and analogue signal processing instrumentation for engineers working in the areas stated below.

Brochures

DJB Instruments - Accelerometers

DJB’s range of accelerometers are available in a variety of configurations, we produce both Charge Output and Voltage Output IEPE Accelerometers including the worlds smallest stainless steel accelerometers (A/28/E and A/128/V) and modal clip mounted triaxial accelerometers (AT/11, AT/13, A/136). Our range also includes unique and industry leading water cooled IEPE accelerometers capable of operating in extreme temperatures ranging up to 900°C.

DJB’s wide range of accelerometers are suitable for almost any vibration measurement application requiring a high degree of accuracy, in a potentially hostile environment.

Single Axis Charge

Single Axis IEPE

Triax Charge

Triax IEPE

High Shock

High Temperature

MEMS

Seismic

Industrial

Accessoires

Low Cost

Instruments - Points To Consider

Charge of IEPE – If you are using a charge accelerometer you will need a charge amplifier. Very few data acquisition systems offer built in charge conditioning so an external box will be required. IEPE accelerometers can often be connected directly to the acquisition system as the IEPE power is available, an ideal way of minimising hardware needs. If an older acquisition system is used, a range of IEPE signal conditioners is available from battery powered/DC supplied to rack Base multi channel solutions.

In line Charge Amplifier – his is becoming a very popular way of connecting charge accelerometers, utilising the IEPE power built into many data acquisition systems. The fixed gain amplifier is housed in a BNC/microdot adaptor, allowing it to be connected directly to the data acquisition hardware with a low noise cable attached to a charge accelerometer.

Filters – enable users to filter out unwanted noise or other spurious signals.

Integrators – Conversion of the accelerometer signal to either a velocity or displacement value is a relatively simple mathematical process. Integrators can do this in real time allowing the use of the already converted signal. DJB Instrumentation is available as modular systems in portable case or rack based systems as well as fixed, single or 9 channel solutions.

AF Impedance Head

Charge Amplifiers

IEPE Conditioners

Mems Conditioner

Impact Hammer

Junction Boxes

Inline Amplifiers

Handheld Meters

Handheld Calibrator

Analogue Filters

Modular Conditioning

IEPE simulator

Cables

DJB Instruments UK Ltd offers the widest range of assembled stock cables for accelerometers, for same day despatch and with more than 15,000 connectors and 40 different cable types available in stock we can also assemble cables to suit the customer requirements.

Cable Assembly

Specialist Cable & Assembly for Challenging Applications – Anything IS Possible! DJB provides a bespoke cable assembly service offering a vast range of cables from just 0.8mm diameter, including low noise and armoured solutions whilst offering a wide range of connectors made both in house and off the shelf. This together with excellent relationships with cable manufacturers means we can be very supportive of special requests. Click for more detail.

Free Cable Inspection

DJB offers a service where you can send up to 20 cables for us to inspect free of charge. We will supply a report detailing the health of your cables for you to assess your options

Cable Repair Service

Save money and be ‘GREEN’ to boot by utilising your existing cables. We can make good of most manufacturers and with the free cable inspection prior to commencing you will be kept up to speed right throughout the process. Click for more detail.

How confident are you that your current cables are aiding your work without ultimately affecting the data? Why not take advantage of the free cable inspections service so you can be sure of peak performance.

What is an accelerometer?

An accelerometer is a sensor that measures acceleration or vibrations. It detects changes in velocity and can be used to measure static (e.g., gravity) or dynamic (e.g., vibrations) acceleration in three axes: X, Y, and Z.

What are the applications of accelerometers?

Accelerometers have a wide range of applications. They are commonly used in automotive industry for crash detection and airbag deployment, in aerospace for flight testing and structural health monitoring, in consumer electronics for motion sensing in smartphones and gaming devices, and in industrial machinery for condition monitoring and vibration analysis, among many others.

What types of accelerometers are available?

There are different types of accelerometers, including piezoelectric accelerometers, MEMS (Micro-Electro-Mechanical Systems) accelerometers, and capacitive accelerometers. Each type has its own advantages and is suitable for different applications.

How do I choose the right accelerometer for my application?

When selecting an accelerometer, consider factors such as the required measurement range, frequency range, sensitivity, temperature range, and environmental conditions. It’s important to choose an accelerometer that matches your specific application requirements to ensure accurate and reliable measurements.

How do accelerometers work?

Accelerometers work based on the principle of inertia. When an object accelerates, it exerts a force on the accelerometer, which causes the sensing element inside to deflect. This deflection is converted into an electrical signal that corresponds to the acceleration being measured.

How are accelerometers calibrated?

Accelerometers are typically calibrated using reference accelerometers or traceable calibration standards. Calibration involves subjecting the accelerometer to known acceleration levels and comparing the output signal to the expected values. This ensures accurate and reliable measurements.

Can accelerometers measure both static and dynamic acceleration?

Yes, accelerometers can measure both static (constant) and dynamic (varying) acceleration. They are sensitive to changes in acceleration and can capture a wide range of accelerations, from very low frequencies to high frequencies. There are different types of accelerometers for static and dynamic measurements.

How do I mount an accelerometer?

Mounting methods for accelerometers vary depending on the application. Common methods include adhesives, magnets, or mounting studs. Proper mounting is essential to ensure that the accelerometer is securely attached and aligned with the axis of measurement.
Depending on the mounting method you can have differences in measured frequency ranges.

Can accelerometers be used in harsh environments?

Yes, accelerometers designed for harsh environments are available. These ruggedized accelerometers are built to withstand high temperatures, extreme vibrations, and corrosive or hazardous environments.

Can I integrate accelerometers with other sensors or data acquisition systems?

Yes, accelerometers can be integrated with other sensors and data acquisition systems to capture and analyze data collectively. Integration allows for comprehensive measurement and analysis of multi-parameter systems.