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DC Response Accelerometers Types 4570, 4571, 4572, 4573, 4574, and 4575

DC Response Accelerometers — Types 4570, 4571, 4572, 4573, 4574, and 4575
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DC Response Accelerometers — Types 4570, 4571, 4572, 4573, 4574, and 4575 - 1

PRODUCT DATA DC Response Accelerometers — Types 4570, 4571, 4572, 4573, 4574, and 4575 The DC Response Accelerometers are designed to measure low-frequency vibration down to DC. The gasdamped sensing element offers a wide dynamic range and very stable frequency response even after subjection to high shock levels. The accelerometer has built- in conditioning, where the sensing element and electronics are shielded, sealed and insulated from the housing. D-versions are available offering high thermal stability from –55 to +121°C. USES AND FEATURES FEATURES • High temperature stability • Hermetically sealed • 2 to 500 g full scale • 10000 g shock survivability • Low power consumption USES • Low-frequency, motion and tilt measurements • Flight testing • Road load testing • Transportation • Modal analysis Characteristics The DC response accelerometers are gas-damped, resulting in minimal influence of thermal changes. These low-impedance units operate with a supply voltage from 8 to 24 V DC, and a supply current of 5 mA. The ±2 volt differential output is DC-coupled at a bias voltage of 2.5 V DC, and a 2.5 V reference is built-in for differential measurements. The units can be used with either differential or single-ended input. Fig. 1 Typical frequency response Typical Frequency Response Typical Frequency Response for 4570 Amplitude Phase

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DC Response Accelerometers — Types 4570, 4571, 4572, 4573, 4574, and 4575 - 2

The units feature an internal temperature compensation (updated at intervals of 40 ms) that minimises thermal zero shift and sensitivity shift over a wide temperature range. All types will operate from –55° to +121°C. For standard versions, the thermal zero shift and thermal sensitivity shift are specified in the temperature range –20° to +85°C. For high thermal stability the D-versions are compensated from –55° to +121°C. Calibration The transducers are individually calibrated providing a 1600-point, high-resolution calibration in the specified frequency range (magnitude and phase),...

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DC Response Accelerometers — Types 4570, 4571, 4572, 4573, 4574, and 4575 - 3

Mounting Options Clip Mounting For very flexible and easy mounting, the accelerometers can be bolted to Adaptor for Clip Mounting UA-20831 (see Fig. 4), and applied without any change in frequency response. The adaptor has slots that enable the use of mounting clips, such as Large Mounting Clip UA-1408; Mounting Clip with Thick Base UA-1474, which can be filed down to suit the mounting surface; as well as Swivel Base UA-1473 and Spirit Level UA-1480, which make it easy to align the accelerometer to retain the coordinate system used. Finally, a high-temperature mounting clip, such as...

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DC Response Accelerometers — Types 4570, 4571, 4572, 4573, 4574, and 4575 - 4

Direct from accelerometer to conditioning/data acquisition Customer Specific Direct from accelerometer to conditioning/data acquisition or extension via standard serial cable Endevco Type 136 Other -001 suffix Male 7-pin LEMO termination of integral cable AO-0700-D-100 (other lengths from 1 to 180 m) AO-0414-D-100 (other lengths from 1 to 180 m) Direct from accelerometer to conditioning/data acquisition PULSE NEXUS Other The DC Response accelerometers are available with integral cables with three different terminations dependent on the type number: • Standard accelerometers, including...

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DC Response Accelerometers — Types 4570, 4571, 4572, 4573, 4574, and 4575 - 5

DYNAMIC CHARACTERISTICS All values are typical at 25°C (77°F) unless measurement uncertainty is specified Common Specfications ELECTRICAL CHARACTERISTICS Bias Voltage (zero g output): 2.5 ±0.05 V DC Full-scale Output Voltage: ±2Vpk Output Impedance: <100 Q Ref. Voltage: 2.5 V ±0.005V Output Impedance: (Vref) 1 kQ Supply Voltage: 8 to 24 V DC Current: 5 mA Insulation Resistance (case to shield): >100 MQ PHYSICAL CHARACTERISTICS Weight (excl. cable): 8g (0.282 oz.) Case Material: Anodized aluminium Jacket Material: TPE cable Length of Integral Cable: 3 m (9.8 ft.) Connector: Dependent on...

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DC Response Accelerometers — Types 4570, 4571, 4572, 4573, 4574, and 4575 - 6

All types include the following accessories: • Carrying box • Calibration chart • 2 x 4-40 UNC socket head cap screw (length: 11 mm) with washer • QA-0013: Hex wrench Optional Accessories AO-0414 Extension cable 7-pin LEMO 1 B male to female connector AO-0700 Extension cable 7-pin LEMO 1 B to 6-pin LEMO 0B connector DV-0460 Big Calibration Clip UA-1408 Set of 100 Mounting Clips UA-1473 Set of 100 Swivel Bases UA-1474 Set of 100 Mounting Clips, Thick Base UA-1480 Spirit Level for Swivel Bases UA-2079 Triaxial Mounting Block UA-2080 25 pcs of 4-40 UNC socket head...

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