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QJ42攜帶式直流雙臂電橋

發布日期：2025-01-05
訪問次數：1435
地址：上海寶山

QJ42攜帶式直流雙臂電橋，内附晶体管检流计，可内附工作电源及外接电源端钮，测量范围广，准确度高，适合于工矿企业、实验室或车间现场，对直流低值电阻作准确测量。如用来测量金属导体的导电系数、接触电阻、电动机、变压器绕阻的电阻值，以及其它各类直流低值电阻。

訂購留言

QJ42攜帶式直流雙臂電橋? ，按照中华人民共和国专业标准

ZBY164-83《測量電阻用直流電橋》所規定的有關技術要求制造。

QJ42型直流雙臂電橋，內附晶體管檢流計，可內附工作電源及外接電源端鈕，測量範圍廣，准確度高，適合于工礦企業、實驗室或車間現場，對直流低值電阻作准確測量。如用來測量金屬導體的導電系數、接觸電阻、電動機、變壓器繞阻的電阻值，以及其它各類直流低值電阻。

1、准確度等級：2級

2、儀器使用條件：

a、温度参靠值：20 ±1.5 ℃

b、溫度標稱使用範圍：5~35 ℃

c、濕度參考值：40%~60%

d、濕度標稱使用範圍：25%~75%

3、總有效量程：0.0001~11Ω

4、允許誤差極限爲：

Elim=±2% ( + X)

式中 Elim—允许误差极限（ Ω）

R_N —基准值（ Ω）

X —标度盘示值（ Ω）

5 、电桥各量限、有效量程、等级指数和基准值。见表一

6、內附晶體管檢流計，具有足夠的靈敏度，在基本量限

內當讀數盤變化C%,檢流計指針偏離零位不小于1格。

7、電橋的工作電源爲1.5V~2V(內附電源爲1.5V1號電池2

節）晶體管檢流計工作電源爲6F22型9V電池1節。

8、儀器外形尺寸：280mm×225mm×160mm

QJ42攜帶式直流雙臂電橋?

1、QJ42型雙臂電橋面板位置圖

圖中：

K—－晶體管檢流計工作電源開關

W—－晶體管檢流計調零旋鈕

C₁、C₂—－被測電阻、電流端接線柱

P₁、P₂—－被測電阻、電位端接線柱

Rs—－倍率讀數開關

B——電橋工作電源按鈕開關

G ——檢流計按钮开关

R_T——滑線讀數盤

G₁——檢流計

B₀ ——電橋外接工作電源接線柱

2、電橋原理線路圖

四、使用方法

1、在电池盒内，装人1.5V1号电池2节（内部并联连接）， 9V叠层电池1节，电桥就能正常工作。如用外接直流电

源1.5V~2V時，電池盒內的1.5V電池，應預先全部取出。

2、在檢流計和電源回路中設有可鎖住的按鈕開關（B、G

1、隨産品一起供應的文件：

a、裝箱單；

b、使用說明書；

c、産品合格證；

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