High Sensitivity Accelerometers

Product catalog summary

Overview: This document provides technical specifications and details for the KB12, KB12VD, and KS48C sensors, which are designed for seismic measurements and building vibration analysis, particularly at low frequencies.

Specifications:

Sensor Types: KB12, KB12VD, KS48C
Output: KB12 has a charge output, while KB12VD and KS48C have IEPE voltage outputs.
Design: KB12 and KB12VD use a bender piezo design, whereas KS48C uses a shear design.
Sensitivity: KB12 has a charge sensitivity of 6500 ± 20% pC/g. KB12VD has a voltage sensitivity of 10,000 ± 10% mV/g, and KS48C has 1000 ± 5% mV/g.
Range and Limits: The measurement range varies with each model, with destruction limits of 200g for KB12 and KB12VD, and 1000g for KS48C.
Frequency Range: Linear frequency ranges are specified for each model, with resonant frequencies exceeding 0.35 kHz for KB12 and KB12VD, and 7 kHz for KS48C.
Environmental Characteristics: Operating temperature ranges from -20°C to 80°C for KB12 and KB12VD, and up to 120°C for KS48C.
Protection: KS48C is rated with protection grade IP67.

Mechanical Data:

Weight: KB12 and KB12VD weigh 150g, while KS48C weighs 165g.
Material: KB12 and KB12VD are made of aluminum, and KS48C is made of stainless steel.
Mounting: Various mounting accessories are available, including magnetic bases and triaxial mounting cubes.

Accessories:

Low noise and IEPE cables are available in various lengths and configurations.
Adapters and mounting accessories such as thread adapters and magnetic bases are provided.

Ordering Information: Sensors are available with accessory kits that include cables, adapters, instruction manuals, and data sheets.

Catalog excerpts

Hochempfindliche Beschleunigungsaufnehmer 1.5 High Sensitivity Accelerometers Eigenschaften Properties Sensoren Sensors KB12 KB12VD KS48C Geeignet fur seismische Messungen und Bauwerksun-tersuchungen bei tiefen Frequenzen Օ Hochempfindliches Sensorsystem ohne interne Verstar-kung - dadurch hervorragende Auflsung und geringstes Rauschen KB12(VB) mit besonders gutem Empfindlichkeits-/ Mas-severhaltnis 䕕 KB12(VB) mit luftgedampfter Resonanz und berlast-schutz durch Reibkupplung ٕ KB12 mit Ladungsausgang KB12VD und KS48C mit lEPE-Spannungsausgang Օ KS48C mit Schutzgrad IP67 Brade/713 Suited for seismic measurement and building vibraխtion, particularly at low frequencies Extremely sensitive piezo system provides excelխlent resolution and lowest noise KB12(VB) with particularly high sensitivity-to-mass ratio Օ KB12(VB) with air damping for resonance attenuation and overload protection by friction coupling ͕ KB12 with charge output KB12VD and KS48C with IEPE voltage output Օ KS48C with protection grade IP67 m KS48C KB12 KB12VD KS48C Ausgang Output Ladg. Օ Charge IEPE IEPE Piezosystem Piezo design Bieger / Bender Bieger / Bender Scher / Shear Ladungsubertragungsfaktor Օ Charge sensitivity B qa 6500 ± 20% - - pC/g Spannungsubertragungsfaktor Voltage sensitivity B ua - 10 000 ± 10 1000 ± 5 mV/g Messbereich Օ Range a / a + - ± 3 ± 0,6 ± 6 g Bruchbeschleunigung Destruction limit a max 200 200 1000 g Linearer Frequenzgang Օ Linear frequency range f3 dB f10 % f5 % 260 160 130 0,08 .. 260 0,16 .. 160 0,25 .. 130 0,1 .. 4000 0,2 .. 2600 0,3 .. 2000 Hz Hz Hz Resonanzfrequenz Resonant frequency f > 0,35 (+15dB) > 0,35 (+15 dB) > 7 (+25 dB) kHz Querrichtungsfaktor Օ Transverse sensitivity r00MAV 90MAX < 5 < 5 < 5 % Eigenrauschen, Breitband Residual noise, wide band a dbd n wide band - <1 (0,5..300) <13 (0,5..10000) ug (Hz) Rauschdichten Օ Noise densities 0,1 Hz 1 Hz 10 Hz 100 Hz a 1 a 2 a 3 n3 a 4 - 0,3 0,06 0,03 1 0,6 0,1 0,06 ug/VHz ug/VHz ug/VHz ug/VHz Konstantstromversorgung Constant current supply ICONST CONST - 2 .. 20 2 .. 20 mA Arbeitspunktspannung Օ Output bias voltage (ICONST=4 mA; T=25°C) BIAS - 12 .. 14 12 .. 14 V Ausgangsimpedanz Output impedance (ICONST=4 mA) r OUT - < 130 < 130 n Kapazitat ohne Kabel Օ Capacitance without cable CI 1,5 - - nF Verhalten gegenuber Umgebungseinflussen Environmental characteristics Arbeitstemperaturbereich Օ Operating temperature range T /T min max -20 / 80 -20 / 80 -20 / 120 °C Temp.-koeffizient der Empfindl. Temp. coefficient of sensitivity TK(B ) -0,11 ±0,02 (-20..40°C) >-0,08 (40..80°C) ±0,02 (-20..20°C) -0,05 (20..80°C) -0,12 (80..120°C) %/K Temp.-koeffizient der Kapazitat. Օ Temp. coefficient of capacitance TK(Ci) 0,26 - - %/K Temperatursprungempfindlichkeit Temperature transient sensitivity b aT 0,01 0,002 0,0005 ms-2/K Schalldruckempfindlichkeit Օ Acoustic noise sensitivity b aP 0,1 0,1 ms-2/kPa Mechanische Daten Mechanical data Masse ohne Kabel Օ Weight without cable m 150 / 5,3 150 / 5,3 165 / 5.8 g / oz Gehausematerial Case material Aluminium Aluminium Edelst.^ Stainl. St. Kabelanschluss Օ Cable connection radial radial axial Buchse Socket UNF10-32 UNF10-32 Binder 713 Befestigungsgewinde Օ Mounting thread M5 / M10 M5 / M10 M8 (1) Diese Aufnehmer sind gegen Aufpreis auch mit 2 % Empfindlichkeits-Toleranz lieferbar. These accelerometers are also available 2 % sensitivity tolerance at extra charge.

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Typischer Frequenzgang Typical Amplitude Response X K i" Օ 10 KB12(VD) Buaff) % 20 \r f. 10 KS48C Buain -A 0,1 1 Anschluss KS48C: Connection KS48C: 10 100 Hz 0.1 i Օ > 100 101 Hz Befestigungs- und Isolierflansch fur KB12(VD) (Standardzubehr): Mounting and insulating flange for KB12(VD) (standard accessory): s Pin Belegung Assignment 1: Signalmasse 䕕 Signal ground 2: unbenutzt Unused 3: Signalausgang Օ Signal output 4: unbenutzt Unused f s 51 t. 1 1 - 1 g 1 :! ■ i<. ■ ■■ i mil PVC-IsclierKhe l>e fur Air.rJc::s<:hr;n.lM>n M3 zum Auf nali merboden CջmW&ihte for Cylbld^r head screws M3 .-.i:■ i PVCwashers...

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