Main Technical Specifications
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Acceleration range: ±0.5g to ±70g.
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Acceleration measurement uncertainty:
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Within (0.5g to 1g) range: 5×10⁻⁵ g (k=1)
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Within (1g to 70g) range: 5×10⁻⁵ (k=1)
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Rotational speed requirements
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Speed range: 20 to 340 r/min
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Speed measurement uncertainty: 2×10⁻⁵ (k=1)
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Speed setting resolution: 2×10⁻⁴ r/min
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Speed stability: <2×10⁻⁵ (1-minute average)
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Speed repeatability: <1.5×10⁻⁶
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Turntable surface and radius requirements
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Table diameter: 0.9 m
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Working radius: approximately 0.45 m
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Azimuth angle of the mounting reference surface for the high-performance quartz inertial device
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The settable azimuth angle shall be at least 0° or 180° to allow calibration of the high-performance quartz inertial device in both positive and negative acceleration directions.
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Azimuth misalignment angle: θ ≤ 3′
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Pitch misalignment angle of the mounting reference surface for the high-performance quartz inertial device: θ ≤ 10″
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Angle between the main spindle rotation centerline and the vertical line: θ ≤ 20″
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Slip ring requirements
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Number of rings: 20 rings (using two wires combined)
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Dynamic contact resistance variation: <0.05 Ω
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Insulation resistance: 300 MΩ / 500 VDC
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Operating current: 1 A
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Load capacity
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The centrifuge has a load capacity of 15 kg (including fixtures).
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Fixtures
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Used for mounting the high-performance quartz inertial device under test; four devices can be installed at one time.
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Self-diagnostic function
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The equipment shall have a self-diagnostic function.
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Operating mode: Automatic mode. Speed control, dynamic radius measurement, and output measurement of the high-performance quartz inertial device are performed by a computer according to operator commands.
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Safety requirements
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Since the centrifuge is a large rotating equipment, safety protection design shall be implemented against various possible unexpected situations.
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Equipment reliability
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The equipment shall be capable of continuous operation for 8 hours under normal conditions for calibrating high-performance quartz inertial devices.
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MTBF of the equipment > 2000 hours.
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| No. | Name | Quantity | Remarks |
|---|---|---|---|
| 1 | Advantech Industrial Computer 610H & Industrial KVM + 5U | 1 | |
| 2 | Keysight 34420A 7½ Digit Multimeter | 2 | |
| 3 | Multi-channel automatic switching switch, built-in constant temperature oil bath for placing high-precision sampling resistors | 1 | |
| 4 | Precision centrifuge turntable | 1 | |
| 5 | Dedicated test software | 1 | |
| 6 | Test cabinet (27U) panel + 4U | 1 | |
| 7 | Turntable control unit | 1 | |
| 8 | Installation test fixture | 4 |
