The document describes the technical specifications and installation requirements of a model called 3145A. It is a precision accelerometer that is suitable for various applications. The model is made of titanium alloy and has a lightweight and compact size. The installation methods include threaded mounting and adhesive mounting. The model features good performance, including high accuracy and stable sensitivity. Some details need to be taken into account during installation and use to ensure proper operation and optimal performance.
The 3145A and 3145AG are compact, titanium‑alloy accelerometers with a hermetically sealed, all‑welded construction. They mount via a 5‑40 integral stud and use a 5‑44 coaxial top‑mounted connector. Recommended installation torque is 10 oz‑in and the suggested adhesive for the 3145AG version is cyanoacrylate instant bond.
The devices provide a sensitivity of 100 mV/G, a frequency range of 0.5 to 10 kHz, and a resonant frequency of 45 kHz. Electrical characteristics include a supply voltage range of 2‑20 V (or 18‑30 V), 100 Ω output impedance, and a +9 V bias voltage. They operate from –60 °C to +300 °C and can withstand up to 600 g/3000 g shock peaks.
| Weight | 2.3 g (3145A), 2.1 g (3145AG) |
|---|---|
| Size (Hex x Height) | 0.281 in (9/32) × 0.49 in |
| Mounting provision | 5‑40 integral stud |
| Connector | 5‑44 coaxial, top‑mounted |
| Housing material | 300 Series Stainless Steel (connector) / Titanium alloy (body) |
| Sensitivity | 100 mV/G |
| Frequency range | 0.5 to 10 kHz |
| Resonant frequency | 45 kHz |
| Supply voltage range | 2‑20 V (or 18‑30 V) |
| Output impedance | 100 Ω |
| Bias voltage | +9 V (nominal, +8 to +10 VDC) |
| Operating temperature range | -60 °C to +300 °C |
| Maximum vibration/shock | 600 g / 3000 g peak |
Install model 3145A with a torque of 10 oz‑in.
Use cyanoacrylate instant bond as the suggested adhesive for model 3145AG.
The output signal polarity is positive for acceleration toward the top.
The resonant frequency is nominally 45 kHz.