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详细内容
| 加工定制 | 是 | 类型 | 直流电阻箱 | ||
| 测量范围 | 0.01~11111.11(Ω) | 准确度等级 | 0.02% | ||
| 外形尺寸 | 200X215X140(mm) | 适用范围 | 工矿、大学,科研 | 重量 | 4Kg |
| 型号 | 示值范围 | 最小步进 | 准确度 | 尺度cm3 | 重量kg |
| DL08-25a | 0.01~11111.11Ω | 0.01Ω | 0.02 | 27*21*14 | 1.7 |
| DL08-67 | 0.01~11111.11Ω | 0.01Ω | 0.01 |
The type of DL08-25a
Switch-mode DC Standard Resistor Box
Manual
First. Resistance box structure.
Resistance box is the value of variable resistor measuring resistance, the resistance value can be known by the scope of the ladder must be changed.
Standard switch-mode DC resistance of the resistor box to the various components are then contact between the rotating and fixed in a frame in contact with brush contacts on the mobile.
Box in which resistor is being used between the initial contact resistance is the use of brush and touched by the resistance between contacts.
Second.use
1, for the DC circuit for precision resistance adjustment purposes.
2, machine resistance check box under the one-thousandth.
3, the use of machine precision resistance box to check a single DC power portable bridges.
Third, the main technical indicators of resistance box
1, measuring range :0.01 ----- 11111 .1 ohms
2, in compliance with the following conditions of use, the resistance will not exceed the error box in Table 1 to allow the basic error.
⑴, ambient air temperature of 20 - ± 3℃, relative humidity of 80% or less;
⑵, current to direct current;
⑶, power does not exceed the rating.
3, the basic error of resistance box as shown in table 1 provides that:
| X1000 | X100 | X10 | X1 | X0.1 | X0.01 |
| ±0.02% | ±0.02% | ±0.05% | ±0.2% | ±1% | ±5% |
4, resistance box between the internal circuits and the shell of the insulation resistance should be not less than 1000 megohm test voltage of 500 volts
5. Resistor box line and the insulation between shell strength, must be able to withstand a frequency of 50 weeks, the actual volt AC sine wave of the role in 2000, Lee at one minute.
6, resistance box between the block should not exceed the maximum allowable current provisions of Table 2
| Magnification | X0.01 | X0.1 | X1 | X10 | X100 | X1000 |
| Allowed through the current | 3A | 3A | 0.3A | 0.1A | 0.03A | 0.01A |
7, Overall dimensions to 340X165X148 mm and weighing about 4 kg
Fourth, the structural characteristics of resistance box
Bearing resistance box with a potential client can lead to component test, switch contact ring and brush contact films are used between the micro-spring-pressed, so the long-term use, the contact resistance variation of small, bearing a high insulation Feng poly plastic materials, insulation, and panel show the value of reading can be arranged in two linear time simple and clear to show the value of switch resistance on me all the time zero, zero-resistance of 0.01 ohm. Therefore, the smallest non-zero switching step, starting at 1, in the course of the measurement results do not have to deduct zero resistance. High-stability resistor elements manganese to copper alloy wire system without a sense of style around the ceramic tube and a rigorous process and therefore have a high stability. DL08-56-type resistance box wide for schools, factories and scientific research units for power measurement and other experimental purposes.
V, storage use and ensure that deadlines
1, the proper use of resistance box should be the first rotary knob about the groups, the use of stable and reliable contact.
2, resistance boxes in the course of tablets should be regular cleaning brush, cleaning cotton fist used in gasoline in contact with the surface of Central Wipe after lightly coated with a layer of evenly Vaseline can be neutral.
3, where the use and storage temperature should be +10℃-----+ 30℃, relative humidity should not fight in 8% ambient air should not contain corrosive gas.
4, resistor box from the factory to ensure that deadline date foreighteen hours.
Sixth. together with the supply of paper products are
1, packing list
2, product certification
3, Product Manual
Shanghai DomoreElectronic Science and Technology Co., Ltd.
Address: Number128,Jinjia Dun,fuyang,Hangzhou,Zhejiang Province.
DL08-25a检测报告
检测温度20 湿度60% 零电阻0.00998Ω
编号 20140115
|
| 1000Ω | 100Ω | 10Ω | 1Ω | 0.1Ω | 0.01Ω | ||
| 1 | 999.99 | 100.004 | 9.9992 | 0.9999 | 0.0996 | 0.00998 | ||
| 2 | 2000.04 | 200.002 | 19.9988 | 1.9996 | 0.1994 | 0.01994 | ||
| 3 | 3000.09 | 300.000 | 29.9984 | 2.9997 | 0.2992 | 0.02998 | ||
| 4 | 4000.12 | 400.000 | 39.9976 | 3.9999 | 0.3992 | 0.04004 | ||
| 5 | 5000.12 | 500.001 | 49.9970 | 5.0003 | 0.4991 | 0.05010 | ||
| 6 | 6000.12 | 599.998 | 59.9963 | 6.0005 | 0.5991 | 0.06011 | ||
| 7 | 7000.14 | 699.998 | 69.9957 | |||||
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