The ISAS03-150 is a piezoelectric AE sensor with integrated preamplifier based on intrinsically safe electronic design making it suitable for installation in ATEX zone 0 environment. ISAS3-150 is recommendet for application with bandwith from 95 kHz to 300 kHz and has its peak sensitivity at 150 kHz. The integrated preamplifier has 20 dB gain and supports Automatic Sensor Test (AST) for judging sensor coupling. Benefits of ISAS3 are amongst others the intrinsically safe and robust sensor design, the ATEX certification, ingress protection class IP 68 and water and oil resistance up to 12 bar.

Technical Specification


Freqency Range (fPeak) [kHz] 120 to 180 (150)
Power Supply [VDC] 12 ± 1
Typ. Power [W] 0.13 / 0.18 @ Signal 0% / 100%
Preamplifier [dB] Yes
Preamplier Gain 20
Operating Temperature [°C] -20 to +60
Size (W x L x H) [mm] 53.5 x 56 x 47.5
Weight [g] 250
Case material Stainless Steel (1.4571)
Wear Plate Stainless Steel (1.4571)
Connector SMA
Ingress Protection (IP) Rating IP68
Shield Cross-Talk [dB] < -80
Noise (max. 1/s) [dBAE Peak] 28.2 @ 95 – 300 kHz
Noise (max. 1/s) [µVRMS] 5.9 @ 95 – 300 kHz
Pulse AST Yes
Max. input Voltage Ui [V] 13.8
Max. inner Capacity Ci [nF] 65
Max. input Current Ii [mA] 60
Max. inner Inductivity Li [µH] 1
Max. input Power Pi [W] 0.3
ATEX Label II 1G Ex ia IIC T6 Ga

Further Information

ISAFE3 Brochure

ISAS3 Operation Manual