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QJ45A便攜式線路故障測試器

發布日期：2025-01-05
訪問次數：769
地址：上海寶山

QJ45A便攜式線路故障測試器，主要以電橋測量原理組成各類回路測試線路，用以檢測通訊電纜或通訊架空線等線路中的接地、混線、錯接、斷線等故障，並且也適宜作一般電阻的精密測量。儀器內附電源和檢流計，便于現場使用。

訂購留言

一、概述
    QJ45A便攜式線路故障測試器，按照中華人民共和國國家標准GB3930—83《測量電阻用直流電橋》所規定的有關技術要求制造。
二、用途
    QJ45A便攜式線路故障測試器，主要以電橋測量原理組成各類回路測試線路，用以檢測通訊電纜或通訊架空線等線路中的接地、混線、錯接、斷線等故障，並且也適宜作一般電阻的精密測量。儀器內附電源和檢流計，便于現場使用。
三、主要技術指標
1、准确度等级：0.1级
2、仪器使用条件
a．溫度參考值：20±1.5℃
b．溫度標稱使用範圍5～35℃
c．濕度參考值：40%～60%
中华人 d．湿度标称使用范围：25%～75%
3、总有效量程： 1～1111100Ω 。有效量程：10～10000Ω
4、在参考的温度和参考相对湿度的条件下，电桥各量限的允许误差极限为：
            RN
Elim=±C%（—— +X）
            10
式中：Elim ——允许极限误差，Ω
C——等級指數
          X——标度盘示值，Ω
          RN——基准值，Ω
5、电桥各量限，有效量程，等級指數和基准值见下表。

量程因素	有效量程（Ω）	等級指數（%）	基准值R_N （Ω）
×100	100000～1111100	0.2	10⁶
×10	10000～111110	0.2	10⁵
×1	1000～11111	0.1	10⁴
× ¹/₄	250～2500		10³
× ¹/₉	100～1111		10³
× ¹/₁₀	100～1111		10³
× ¹/₁₀₀	10～111		10²
× ¹/₁₀₀₀	1～11.1	1	10

6、电桥的工作电源为3V（[R20]一号电池2节串联），集成电路检流计工作电源为6F22—9V（1节）
7、仪器外形尺寸：280mm×220mm×140mm
8、仪器重量：<3kg

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