New Reference Technical Guide
36Pages

TECHNICAL REFERENCE Designed Engineered Manufactured yjfc +44 (0)1638 712 288 (^) sales@djbinstruments.com ^ www.djbinstruments.com

Introduction DJB Instruments (UK) Ltd has been manufacturing accelerometers, cables, instrumentation and accessories for over 40 years. Originally established as DJ Birchall Ltd in 1974, it changed name in 2010 after the death of the company's founder, Don Birchall. DJB is proud to uphold the traditions of quality British manufacturing that has been admired for so long around the world and remains the UK's only test and measurement accelerometer manufacturer. Don Birchall's innovation in sensor design is continued by the company today through collaborations with world leading universities...

Contents 4 Index 6 Aerospace 7 Sports Science & Human Vibration 8 Automotive Research, Test & Measurement 9 Machine & Condition Monitoring Piezoelectric Accelerometers 11 Mono-axial Piezo-Tronic IEPE Accelerometers 12 Tri-axial Piezo-Tronic IEPE Accelerometers 13 Mono-axial Piezoelectric Accelerometers 14 Tri-axial Piezoelectric Accelerometers 15 Ultra High Temperature Exhaust&Turbo Charger Accels, 900°C Mono-axial Seismic Accelerometers 16 High Shock Mono-axial IEPE Accelerometers Low Cost Mono-axial Industrial IEPE Accelerometers 17 Mono-axial Industrial Piezoelectric...

Type Sensitivity Weight Mono-axial Piezo-Tronic IEPE Accelerometers Tri-axial Piezo-Tronic IEPE Accelerometers Mono-axial Piezoelectric Charge Accelerometers Size (mm) Min - Max Temp Connector Mounting Page Adhesive, Mounting clip 12 Adhesive, Mounting clip 12 Adhesive, Mounting clip 12 Through hole & 3 x tapped 12 Through hole & 3 x tapped 12

Type Sensitivity Weight Size (mm) Min - Max Temp Connector Mounting Tri-axial Piezoelectric Charge Accelerometers Ultra High Temperature Exhaust & Turbo Charger Test Acceleromter, 900 °C Seismic / Micro g Mono-axial Accelerometers High Shock Mono-axial Piezo-Tronic IEPE Accelerometers Low Cost Mono-axial Piezoelectric Accelerometers Industrial Mono-axial Piezoelectric Accelerometers Int. Cbl, M or 4S-1 4S-1 4S-1 4S-1 4S-1 4S-1 4S-1 L8 L8 M M M M M M M M M M M M M TNC M M TNC M5 Int. Cbl M5 Int. Cbl Int. Cbl 2 pin MIL-C-5015 3m Int. Cbl. 3m Int. Cbl. 3m Int. Cbl. 3m Int....

Typical accelerometers used for ground testing: From miniature accelerometers to minimise mass loading, through to general purpose monoaxial and increasingly triaxial accelerometers available in both IEPE and Charge versions. A/127, A/27, page 11,13 A/124, A/24 page 11,13 AT/10, AT/01 page 12,14 AT/14, AT/04 page 12,14 Typical accelerometers used for in-flight health monitoring: High temperature capabilities for engine / gearbox monitoring. Many are custom made to suit a particular engine or gearbox. A/81, A/107 page 17 DJB supply cables and accelerometers for low outgassing application in...

Typical accelerometers used: Many applications can be heavily reliant on the size of the accelerometer, where temperature is rarely an issue, with IEPE becoming a common choice. DC MEMS accelerometers are also commonly for low frequency testing. See page 18 The effects of vibration on human beings, whether as a result of using machines (drills, hydraulic hammers, driving) or as part of their involvement in sport or human endeavour, is one that has steadily increased in its importance for both health reasons and for the never ending goal to improve human performance. Measuring vibration in...

Automotive Research, Test & Measurement The world of NVH (Noise, Vibration & Harshness) testing is the very cornerstone of automotive development. The need to develop smooth, quiet and reliable vehicles requires a detailed understanding and mastery of vibration and structural analysis, to this end the Automotive industry uses accelerometers in the widest range of applications. DJB offers solutions for almost every conceivable application, but one in particular remains unique to DJB and market leading for those involved in the most extreme conditions of turbo or exhaust test and development....

Typical accelerometers and instrumentation used: A/140 series – Low cost range of accelerometers Page 16 VS1 – Handheld vibration meter for spot checks Page 21 Junction boxes – Designed and built specific to your requirements. Page 29 A/81, A/52 – High temperature options. Page 17 Machine and Condition Monitoring Industrial manufacturing processes inevitably generate vibration and noise. This is particularly true of any rotating machinery, in many applications heat also becomes an issue. It is the nature of vibration to be extremely damaging and as a result, industrial machines undergo...

Piezoelectric Accelerometers

Micro Miniature Miniature Sensitivity 1mV/g up to 10mV/g Weight 0.19gm Size (mm) 5.7 x 03.5 x 2.3 Min-Max. Temp -50°C • 200°C Connector Integral Cable, L8, 10-32 UNF Microdot Sensing Element Shear Plate Piezo-Ceramic Mounting Adhesive Sensitivity 1mV/g up to 250mV/g Weight 3.4-5.2gm Size (mm) 9.5 (A/F) x 9.4-10 Min-Max. Temp -50°C • 125°C (185°C HT) Connector 10-32 UNF Microdot Sensing Element Konic Shear® Piezo-Ceramic Mounting Adhesive, M5 x 5mm integral stud Base tapped 17.2 x 016 x 9.5 Min-Max. Temp -50°C • 125°C (185°C HT) Connector 10-32 UNF Microdot Sensing Element Konic...

Integral Electronics, Voltage Output All dimensions given in mm (L x W x H) not including the connector Sensing Element Shear Plate Piezo-Ceramic Mounting Adhesive Sensing Element Konic Shear® Piezo-Ceramic Mounting Adhesive, 2x M3 Screws, Base tapped Sensing Element Konic Shear® Piezo-Ceramic Mounting Adhesive, Base tapped 10-32 UNF 22.2 x 22.2 x 11.7 Min-Max. Temp -50°C • 125°C (185°C HT) Connector 10-32 UNF Microdot Sensing Element Konic Shear® Piezo-Ceramic Mounting 2 x 03.57mm through holes, 1 x M4 0 through hole + 3 x tapped 1032 UNF x 4mm deep Adhesive Accelerometer Key: E Side...