The Metromatics Series MM122A, MM121A, MM111A and MM147A are IEPE Shock Accelerometers, also known as voltage mode accelerometers, with built in electronics that converts the piezoelectric signal from the sensor to a low impedance voltage signal. Overall, making them suitable for longer cable runs, real time monitoring and noisy environments. In addition, this series has a measuring range of 1,000 to 50,000 g.
Secondly, made from either strengthened stainless steel or titanium, providing true durability. Also, most models are hermetically sealed. Therefore, providing a barrier to protect the inner workings of the sensor allowing it to operate in conditions from -40 to +70°C.
How IEPE Shock Accelerometers operate
The heart of the IEPE high shock accelerometer is the piezoelectric crystal. Firstly, when these accelerometers encounter acceleration or a shock event, the crystal produces a proportional electrical output on its surface due to the applied force.
One advantage over Charge Mode accelerometers, it that the IEPE accelerometers feature inbuilt electronics. Such as a charge amplifier, voltage amplifier and often a built-in voltage regulator.
Therefore, the piezoelectric charge created by the sensor is converted immediately into the low impedance voltage signal within the built in electronics. This voltage signal is amplified further by the voltage amplifier to achieve a measurable voltage output. Typically, in the millivolt range, which is proportional to the applied acceleration or shock.
This enables further signal conditioning and processing easily, by data acquisition systems or other measurement equipment.
To learn more about our IEPE Shock Accelerometers, consult the table below or contact us.
IEPE Shock Accelerometers Portfolio – Part I
| Model | MM121A-01 | MM121A-02 | MM121A-05 | MM122A-01 | MM122A-02 | MM122A-05 |
|---|---|---|---|---|---|---|
| Sensitivity mV/g | 1 | 2 | 5 | 1 | 2 | 5 |
| Measuring Range g pk | ±5,000 | ±2,500 | ±1,000 | ±5,000 | ±2,500 | ±1,000 |
| Resolution mg ms | 20 | 10 | 5 | 20 | 10 | 5 |
| Frequency Range (±1dB) Hz | 1-10,000 | 1-10,000 | 1-10,000 | 1-10,000 | 1-10,000 | 1-10,000 |
| Resonant Frequency kHz | 40 | 40 | 40 | 40 | 40 | 40 |
| Temperature Range °C | -40 to +121 | -40 to +121 | -40 to +121 | -40 to +121 | -40 to +121 | -40 to +121 |
| Sensing Element | Ceramic/Shear | Ceramic/Shear | Ceramic/Shear | Ceramic/Shear | Ceramic/Shear | Ceramic/Shear |
| Output Connector | M5 Top | M5 Top | M5 Top | M5 Side | M5 Side | M5 Side |
| Electronic Isolation Ὠ | - | - | - | - | - | - |
| Housing Material | High Strength Stainless Steel | High Strength Stainless Steel | High Strength Stainless Steel | High Strength Stainless Steel | High Strength Stainless Steel | High Strength Stainless Steel |
| Sealing | Epoxy Glue | Epoxy Glue | Epoxy Glue | Epoxy Glue | Epoxy Glue | Epoxy Glue |
| Weight g | 10 | 12 | 12 | 10 | 12 | 12 |
| Size mm | Փ11 x 21.3 | Փ11 x 21.3 | Փ11 x 21.3 | Փ11 x 16.3 | Փ11 x 16.3 | Փ11 x 16.3 |
| Mounting | M5 (Female) | M5 (Female) | M5 (Female) | M5 (Female) | M5 (Female) | M5 (Female) |
| Spec Sheet | Spec Sheet | Spec Sheet | Spec Sheet | Spec Sheet | Spec Sheet | Spec Sheet |
| Buy Now | Buy Now | Buy Now | Buy Now | Buy Now | Buy Now | Buy Now |
IEPE Shock Accelerometers Portfolio – Part II
| Model | MM111A-01G | MM111A-02G | MM111A-05G | MM147A-01 | MM147A-02 |
|---|---|---|---|---|---|
| Sensitivity mV/g | 0.5 | 0.25 | 0.1 | 1 | 0.5 |
| Measuring Range g pk | ±10,000 | ±20,000 | ±50,000 | ±5,000 | ±10,000 |
| Resolution mg ms | 50 | 100 | 200 | 20 | 40 |
| Frequency Range (±1dB) Hz | 1-10,000 | 1-10,000 | 1-10,000 | 1-8,000 | 1-8,000 |
| Resonant Frequency kHz | 40 | 40 | 40 | 30 | 30 |
| Temperature Range °C | -40 to +70 | -40 to +70 | -40 to +70 | -40 to +70 | -40 to +70 |
| Sensing Element | Ceramic/Shear | Ceramic/Shear | Ceramic/Shear | Ceramic/Shear | Ceramic/Shear |
| Output Connector | Integral Cable | Integral Cable | Integral Cable | Integral Cable | Integral Cable |
| Electronic Isolation Ὠ | Case Isolation ≥10⁹ | Case Isolation ≥10⁹ | Case Isolation ≥10⁹ | Case Isolation ≥10⁹ | Case Isolation ≥10⁹ |
| Housing Material | Titanium | Titanium | Titanium | Titanium | Titanium |
| Sealing | Welded | Welded | Welded | Welded | Welded |
| Weight g | 10 | 10 | 10 | 40 | 40 |
| Size mm | Փ12 x 24.5 | Փ12 x 24.5 | Փ12 x 24.5 | 25 x 22 x 12 | 25 x 22 x 12 |
| Mounting | M6 x 0.75 (Male) or M5 (Male) | M6 x 0.75 (Male) or M5 (Male) | M6 x 0.75 (Male) or M5 (Male) | (4) Փ3 (Thru-hole) | (4) Փ3 (Thru-hole) |
| Spec Sheet | Spec Sheet | Spec Sheet | Spec Sheet | Spec Sheet | Spec Sheet |
| Buy Now | Buy Now | Buy Now | Buy Now | Buy Now | Buy Now |
