This document provides installation drawings and outlines for models 3145A1 and 3145A1G, as well as describing the features and characteristics of the products.
The Dytran 3145A1 and 3145A1G accelerometers are compact, hermetically sealed sensors with a titanium alloy housing and a 5‑44 coaxial top‑mounted connector. They are offered with either a 5‑40 integral stud or an adhesive mounting option and weigh 2.3 g (A1) or 2.1 g (A1G).
The handbook provides physical dimensions, performance characteristics such as sensitivity (+10 mV/V/G), frequency range (0.5‑10 kHz), resonant frequency (45 kHz), and electrical parameters including supply current (2‑20 mA) and bias voltage (+9 V). Installation notes cover recommended adhesive, torque (10 oz‑in), and drilling specifications for stud mounting.
| Weight | 2.3 g (A1) / 2.1 g (A1G) |
|---|---|
| Connector type | 5‑44 coaxial, top‑mounted |
| Housing material | 300 Series Stainless Steel |
| Full‑scale range | ±500 G for +5 V output |
| Frequency range | 0.5 kHz – 10 kHz (+5 %) |
| Resonant frequency | 45 kHz (nominal) |
| Bias voltage | +9 V (nominal, +8 V to +13 V) |
| Output impedance | 100 Ω (typical) |
| Output signal polarity | Positive for acceleration toward top |
Cyanoacrylate “instant” bond is the suggested adhesive for the 3145A1G model.
The output signal is positive for acceleration toward the top of the sensor.
Drill a #38 hole (0.101 in) to a minimum depth of 0.200 in, then tap 5‑40 to 0.140 in depth.