另类淫荡p

QJ57直流電阻電橋

發布日期：2025-01-05
訪問次數：1180
地址：上海寶山

QJ57直流電阻電橋，内附晶体管检流计和内附工作电源，具有五个十进制测量读数盘，全量程由七个分量程组成。不需要任何附件即可进行测量，适合实验室、车间生产线或野外工地，高精度测量直流中值和低值电阻，体积小巧、使用方便

訂購留言

QJ57直流電阻電橋，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。

一、概述

QJ57直流電阻電橋，內附晶體管檢流計和內附工作電源，具有五個十進制測量讀數盤，全量程由七個分量程組成。不需要任何附件即可進行測量，適合實驗室、車間生産線或野外工地，高精度測量直流中值和低值電阻，體積小巧、使用方便。主要用途有：

1、對金屬杆棒、板材或電纜、導線等電阻率的測定；

2、電流彙流排，金屬殼體焊接質量的測定；

3、對低阻標准器、大電流分流器、功率型電阻器等的校驗和調整；

4、開關、電器接觸電阻的測量；

5、電機、變壓器繞組的直流電阻測量和溫升試驗等。

二、技術指標

1、准确度等级：0.05级

2、使用條件：

溫度參考值：20±0.5℃

溫度標稱使用範圍：20±5℃

濕度參考值：40％～60％

濕度標稱使用範圍：25％～75％

3、總有效量程：0.0001Ω～1111.1Ω

分辨力：0.01μΩ

4、允許誤差極限爲：

Elim＝±a%（ X/R_N + X）

式中：a— 等级指数

X—標度盤示值（Ω）

R_N—基准值（Ω）

5、電橋各量程的技術指標：

倍率(R_S)	有效量程（Ω）	等級指數(%)	基准值（R_N）
×1000	1000～1111.1	0.05	1000
×100	100～111.1	0.05	100
×10	10～11.111	0.05	10
×1	1～1.1111	0.05	1
×0.1	0.1～0.11111	0.05	0.1
×0.01	0.01～0.011111	0.2	0.01
×0.001	0.001～0.0011111	2	0.001

6、內附檢流計具有足夠的靈敏度，在各量程內（0.01～1111.1Ω），當讀數盤變化0.05%，檢流計指針偏格不小于1分格，其它量程靈敏度達不到時，可外接檢流計。

7、电桥的工作电源为1.5V~2V（内附工作电源为1.5V ,1＃电池5节并联），内附检流计工作电源为9V叠层电池。

8、儀器外形尺寸：320×260×160mm

9、儀器重量：<5kg

上一篇：SQJ23數字式直流電橋

下一篇：QJ47直流單雙臂電橋

The captain gave the order to cast off the lines. Hardly had the echo of his words ceased before the lines had fallen. Then he rang the signal to the engineer, and the great screw began to revolve beneath the stern of[Pg 49] the ship. Promptly at the advertised time the huge craft was under way. The crowd on the dock cheered as she moved slowly on, and they cheered again as she gathered speed and ploughed the water into a track of foam. The cheers grew fainter and fainter; faces and forms were no longer to be distinguished; the waving of hats and kerchiefs ceased; the long dock became a speck of black against the hilly shore, and the great city faded from sight. "But there is danger that you will get tired if we keep on much longer about the sights of Canton, and particularly the shopping part of it. Besides, we want to go out and see what there is in Hong-kong, and perhaps we may run across something new in the Chinese part of the city that we shall want to buy. A good many people say that you can buy Canton goods just as cheaply in Hong-kong as in the city they come from. That may be so; but then it is more satisfactory to get them there and have the pleasure of buying them on the spot. "Let's go back," whispered Lilian, and they turned and retraced their steps. The sight of the lovers sealed their lips. Doctor Allingham struggled for a few moments with a strange sense of bigness wanting to escape. Almost it was a physical sensation; as though the nervous energy in his brain had begun to flow independently of the controls that usually guided it through the channels graven by knowledge and experience. It was Lilian who spoke next, and there was a note of pain in her voice. The steam-engine is the most important, and in England and America best known among motive agents. The importance of steam contrasted with other sources of motive-power is due not so much to a diminished cost of power obtained in this way, but for the reason that the amount of power produced can be determined at will, and in most cases without reference to local conditions; the machinery can with fuel and water be transported from place to place, as in the case of locomotives which not only supply power for their own transit, but move besides vast loads of merchandise, or travel. The first principle to be pointed out in regard to belts, to distinguish them from shafts as a means of transmitting power, is that power is communicated by means of tensile instead of torsional strain, the power during transmission being represented in the difference of tension between the driving and the slack side of belts. In the case of shafts, their length, or the distance to which they may be extended in transmitting power, is limited by torsional resistance; and as belts are not liable to this condition, we may conclude that unless there are other difficulties to be contended with, belts are more suitable than shafts for transmitting power throughout long distances. Belts suffer resistance from the air and from friction in the bearings of supporting pulleys, which are necessary in long horizontal belts; with these exceptions they are capable of moving at a very high rate of speed, and transmitting power without appreciable loss. “Mr. Whiteside—and Jeff?” repeated Larry. Infantry." Now you've torn it. Sometimes there were crises of extraordinary violence when he was with difficulty held down in bed, and these at last wore him out. Towards dawn he fell into a troubled sleep. She opened her lips to protest, but the sound died on them, for he stooped and swept her up in his arms. She slipped her hand to his neck to steady herself, and they went forward again towards the south. Young Ralph Bardon had come into the room, and stood by the door while the last verse was being sung. He was there to give an invitation from his father, for every year the Squire provided the choristers with a mild debauch at Flightshot. Robert had been to several of these, and they glittered in his memory—the laughter and games, the merry fooling, the grand supper table gay with candles. What a joke it had been when someone had given the salt to Rosie Hubble instead of the sugar to eat with her apple pie, and when some other wag had pulled away Ern Ticehurst's chair from under him.... No one thought or spoke or wrote of anything else.[Pg 181] If at meetings Reuben tried to introduce Protection or the Franchise, he was silenced even by his own party. The Scott's Float toll-gate became as important as the Sluice or the Brede River or the Landgate Clock had been in other elections, and nothing, no matter of what national importance, could stand against it. HoME 另类淫荡p ENTER NUMBET 0010www.0715city.com.cn
www.bj238.org.cn
etbag.com.cn
jkmolds.org.cn
www.juhuashi.org.cn
www.langpeiedu.cn
matbu3at.org.cn
missimp.com.cn
suiyuyuan.com.cn
www.zhangleiq.com.cn

另类淫荡p

産品分類展示

標准電阻箱

QJ57直流電阻電橋

留言框

産品：

您的單位：

您的姓名：

聯系電話：

常用郵箱：

省份：

詳細地址：

補充說明：

驗證碼：