• Capturing mechanical vibrations at machines and structures.
• Measuring absolute vibrational acceleration.
• Connecting to vibration measuring and monitoring devices.

• 5 m connection cable.
• Various connectors.
• Versions for Ex-zones.
• Magnetic mounting base.
• Version for use in liquids.

• Rugged and compact design.
• Low weight.
• Standardised sensor interface.

The HMA 11xx / 18xx series vibration transducers convert mechanical vibrations into analogue alternating electric signals. These signals can be evaluated based on magnitude, frequency, and phase for various applications. The sensors vary in sensitivity and configuration, suitable for both mobile and fixed installations for continuous vibration monitoring.

• Input: Vibration acceleration.
• Orientation: Any spatial orientation.
• Measuring Direction: HMA 1140, HMA 1135 in the direction of cylinder axis; HMA 1830, HMA 1835 in the direction of mounting screw.
• Reference System: Absolute vibration transducer.
• Measurement Principle: Piezo.
• Mounting Method: M6 screw.
• Output Signal: Alternating electric voltage.
• Power Supply: 2 to 20 mA, 18 to 28 V DC.
• Weight: Varies by model and cable length.
• Case Material: Stainless steel, non-magnetic.
• Operating Temperature: -40 to +100 °C.
• Connecting Cable: 1.5 m, non-removable, with various connectors.
• Protective Rating: IP 68.
• Output Voltage: HMA 1140, HMA 1830: 100 mV/g; HMA 1135, HMA 1835: 500 mV/g.
• Internal Resistance: Approx. 150 Ω.
• Operating Frequency Range: 0.5 dB: 2.5 to 500 Hz; 3 dB: 1 to 20,000 Hz.
• Measurement Range: HMA 1140, HMA 1830: 0.0005 to 50 g or 0.005 to 500 m/sec²; HMA 1135, HMA 1835: 0.0001 to 10 g or 0.001 to 100 m/sec².
• Max Acceleration: 500 g.
• Directional Sensitivity: Better than 1:20.
• Natural Frequency: Approx. 22 kHz.

For further information, contact Hofmann Mess- und Auswuchttechnik GmbH & Co. KG.