*myaeroexpo

A640 Series

Product catalog summary

Overview
The A640 Series is a DC-operated accelerometer designed for high reliability and precision in various applications such as data acquisition systems, road bed analysis, crash recorders, railways, vibration monitoring, and simulators. It offers both filtered and unfiltered outputs and features integral temperature compensation.

Features

Available in ranges from ±1g to ±20g.
Zero temperature coefficient of damping ratio.
Simultaneous filtered and unfiltered outputs.
DC input and DC output with signal ground isolated from power ground.
High reliability and low weight of 120g.
Wide operating temperature range from -40°C to +100°C.

Benefits

High resolution down to 0.001% FRO (max).
Low weight of 120g.
Wide temperature range from -40°C to +100°C.

Applications

Data acquisition systems.
Road bed analysis.
Crash recorders.
Railways.
Vibration monitoring.
Simulators.

Electrical Connections

Pin A: Supply +
Pin B: Supply 0V
Pin C: Signal ground
Pin D: Signal output (filtered)
Pin E: Signal output (unfiltered)
Pin F: Not connected

Specifications

Output Impedance: 1Ω (max).
Output Noise: 5 V rms (max).
Filtered Output Response: -3 dB.
Non-linearity: ±0.5% FRO (max).
Hysteresis: 0.02% FRO (max).
Resolution: 0.001% FRO (min).
Cross-axis Sensitivity: ±1% FRO (max).
Zero Offset: ±2% FRO (max).
Damping Ratio: 0.7 (±0.2).
Thermal Zero Shift: ±0.02% FRO/°C (max).
Thermal Sensitivity Shift: ±0.02% Reading/°C (max).
Weight: 120 grams (max).

Electrical Characteristics

Full Range Output (FRO): ±5 Volts dc (±2%).
Input Voltage: +6 to 32Vdc Unregulated.
Input Current: 100 mA dc (max).

Environmental Characteristics

Operating Temperature Range: -40 to 100°C.
Compensated Temperature Range: 0 to 50°C.
Storage Temperature Range: -55 to 130°C.
Shock: 200g for 2ms.
Insulation Resistance: 20 MΩ (@50V dc).

Notes

Full Range Output (FRO) is defined as the full acceleration excursion from positive to negative, e.g., ±2g = 4g.
Non-linearity is determined by the method of least squares.
Cross-axis sensitivity is the output of the unit when subjected to full range acceleration in the cross-axis.
Zero offset is specified under static conditions with no vibration inputs.

Model Designation & Ordering Code
Specify the g range and mating connector if required. The standard unit comes with solder pins and a 1g bias option.

Catalog excerpts

A640 Series DC-Operated Accelerometer with unfiltered and low pass filter outputs Features ■ Ranges ±1g to ±20g ■ Essentially zero temperature coefficent of damping ratio ■ Filtered and unfiltered outputs simultaneously available ■ Integral temperature compensation ■ DC input - DC output ■ Signal ground isolated from power ground ■ High reliability Benefits ■ High resolution down to 0.001% FRO (max) ■ Low weight 120g ■ Wide temperature range -40 °C to +100 °C PLAN VIEW Electrical Connections SIDE VIEW Pin A NOVA Sherborne Sensors, a Nova Metrix company METRIX

Open the catalog to page 1

Specifications Specifications by Range @ 25°C Output Impedance Output Noise Filtered Output Response Non-linearity (see note 2) Hysteresis Resolution Cross-axis Sensitivity (see note 3) Zero Offset (see note 4) Damping Ratio Thermal Zero Shift Thermal Sensitivity Shift Weight Electrical Full Range Output (FRO) (see note 1) Volts dc Input Voltage Volts dc Environmental Characteristics Operating Temperature Range °C Compensated Temperature Range °C Storage Temperature Range g Notes Model Designation & Ordering Code 1. Full Range Output (FRO) is defined as the full acceleration excursion from positive...

Open the catalog to page 2

A640 Series

A640 Series

Catalog excerpts

All Sherborne Sensors catalogs and technical brochures