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r r r r r r 技术参数:r
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| r r | rr r | rr r | rr r | rr r | rr r | r
| r r | rr r NO.r r | rr r 项目 rItemr r | r r r 标准 rSpecificationr r | r r r r r | r |
| r r r r | r r r 1r r | rr r 谐振频率 rResonant frequencyr r | r r r 55±1.0KHzr r | rr r r r | r |
| r r r r | r r r 2r r | rr r 灵敏度 rSensitivityr r | r r r ≥1.8Vp-pr r | rr r r r | r |
| r r r r | r r r 3r r | rr r 余振 rRecay timer r | r r r ≤2.20rms r r | rr r r r | r |
| r r r r | r r r 4r r | rr r X轴方向角 rDirectivity(deg) X-axisr r | r r r 90±15°r r | rr r r r | r |
| r r r r | r r r 5r r | rr r Y轴方向角 rDirectivity(deg) Y-axisr r | r r r 45±10°r r | rr r r r | r |
| r r r r | r r r 6r r | rr r 静电电容 rCapacitancer r | r r r 1500±15%pFr r | rr r r r | r |
| r r r r | r r r 7r r | rr r 最大输入电压 rMax. Input Voltr r | r r r 140Vp-pr r | rr r r r | r |
| r r r r | r r r 8r r | rr r 平均无故障时间 rMean time to failurer r | r r r 50000hsr r | rr r r r | r |
| r r r r | r r r 9r r | rr r 工作温度 rOperating temperaturer r | r r r -40~+80℃ r r | rr r r r | r |
| r r r r | r r r 10r r | rr r 储存温度 rStorage temperaturer r | r r r -40~+85℃ r r | rr r r r | r |
| r r r r | r r r r r | r r r r r | r r r r r | r r r r r | r r r | r
r r | r r r | rr r | rr r | rr r | rr r | r

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