精确的电源/电池供电便携式200A微欧姆表。使用4端子测量技术，Tinsley 5898的基本精度为0.2％，总电阻范围为0.1μh至6 Ohm。
使用内部主电源可充电电池，Tinsley 5898可以“在现场”使用长达8小时，无需充电。包括标准RS232计算机接口，可用于打印电阻值或下载已存储在仪器内存中的测量值。如果需要，Tinsley 5898可以使用全自动量程或手动量程选择。6个量程中的每一个都可选择高或低测量电流，但最低量程除外，其固定为200安培。电流可选择为正或负，可选择自动反转以消除热电动势的影响。
An accurate mains/battery powered portable 200A Micro-Ohmmeter. Using the 4 terminal measurement technique the Tinsley 5898 gives basic accuracy of 0.2% and an overall resistance range of 0.1??hm to 6 Ohm.
With an internal mains re-chargeable battery supply the Tinsley 5898 may be used “in the field” for periods of up to 8 hours without requiring recharging. A standard RS232 computer interface is included that may be used for printing resistance values or downloading measurements that have been stored in the instrument’s memory. The Tinsley 5898 can be used fully auto-ranging or with manual range selection if required. Each of the 6 ranges has a choice of high or low measuring current with the exception of the lowest range, which is fixed at 200 Amps. Current can be selected to be positive or negative, with the option of automatic reversal to eliminate the effect of thermal E.M.F.’s.
测量原理
消除导线电阻的四端测量原理。200A电流以大约10％的占空比脉动。测量值连续显示。
电源
两个内部可再充电的密封铅酸电池适用于外部200A测试电阻电流和内部测量电源电路。两个充电指示器显示充电状态。内置电池充电器具有前面板电源输入电源，用于115v或230V电源，带保险丝。
数字显示
4位数6000计数显示屏可在明亮的日光观看20mm高LED显示屏上提供0.015％的满量程读数分辨率。
机械
坚固耐用的便携式密封ABS外壳，灰色。尺寸460 x 380 x 160mm净重约20kg
校准
提供内部Tinsley校准证书，可通过NPL追溯到国家标准
Measurement principle
A four terminal measurement principle to eliminate lead resistance.?The 200A current is pulsed with a duty cycle of approximately 10%. Measurement value displayed continuously.
Power supplies
Two internal, re-chargeable, sealed, lead acid batteries are fitted for external 200A test resistance current and internal measurement supply circuits.?Two charge indicators show the state of charge.?The built-in battery charger has a front panel mains input supply for 115v or 230V supply with fuses.
Digital display
A 4 digit 6000 count display provides resolution to 0.015% of full scale reading in a bright daylight viewing 20mm high LED display.
Mechanical
A rugged, portable sealed ABS case, coloured grey.?Size 460 x 380 x 160mm?Net Weight Approx 20kg
Calibration
Provided with an in-house Tinsley Calibration Certificate traceable to National Standards via NPL
- 6个量程控制（手动选择）
- AUTO键用于自动量程
- 高/低电流控制
- 3电流方向测量控制
- +方向
- – 方向
- 交替（自动反转+和 – 以消除测量电路中的热电动势错误）
- 供应ON / OFF
- 测量键
- 打印键
- 校准（CAL）控制。通过应用一组外部参考标准，可以校准仪器内部参考标准
- Menu / Enter键可访问其他功能
- 时间和日期
- 打印模式
- 波特率
- 数据记录模式
- RS232用于数据和打印机输出
- 4个200A额定输入端子
- 电源输入充电插座
- 2个电池充电指示灯
- 6 measuring range controls (manual selection)
- AUTO key for auto range
- High/Low current control
- 3 Current direction measurement controls
- + direction
- – direction
- Alternate (automatic reversal of + and -to eliminate thermal e.m.f. errors in measuring circuit)
- Supply ON/OFF
- Measure key
- Print key
- Calibration (CAL) control. Enables instrument internal reference standards to be calibrated by applying a set of external reference standards
- Menu/Enter key to access additional functions
- Time and date
- Print mode
- Baud rate
- Data logging mode
- RS232 for data and printer output
- 4 large 200A rated input terminals
- Mains input charging socket
- 2 battery charge indicators
请参阅下表，了解本产品规格的详细信息。
范围 | 解析度? | 当前 | 准确性 | 温度系数 | |
％ 读 | 最后一位数字 | ||||
100μΩ | 0.01μΩ | 200A / – | +/- 0.5％ | +/- 10 | （0.05％+ 4）/°C |
600μΩ | 0.1μΩ | 200A / 50A | +/- 0.4％ | +6 | （0.04％+ 0.2）/°C |
6000μΩ | 1.0μΩ | 200A / 50A | +/- 0.2％ | +6 | （0.02％+ 0.1）/°C |
60μΩ | 10μΩ | 20A / 5A | +/- 0.2％ | +6 | （0.02％+ 0.1）/°C |
600μΩ | 0.1μΩ | 2A / 0.5A | +/- 0.2％ | +6 | （0.02％+ 0.1）/°C |
6Ω | 1.0μΩ | 200毫安/50毫安 | +/- 0.4％ | +6 | （0.04％+ 0.2）/°C |
See the table below for a run-down of this product’s specifications.
Range | Resolution? | Current | Accuracy | Temperature Coefficient | |
% reading | last digits | ||||
100?Ω | 0.01?Ω | 200A/– | +/-0.5% | +/- 10 | (0.05% +4)/ °C |
600?Ω | 0.1?Ω | 200A/50A | +/-0.4% | +6 | (0.04% +0.2)/ °C |
6000?Ω | 1.0?Ω | 200A/50A | +/-0.2% | +6 | (0.02% +0.1)/ °C |
60?Ω | 10?Ω | 20A/5A | +/-0.2% | +6 | (0.02% +0.1)/ °C |
600?Ω | 0.1?Ω | 2A/0.5A | +/-0.2% | +6 | (0.02% +0.1)/ °C |
6Ω | 1.0?Ω | 200mA/50mA | +/-0.4% | +6 | (0.04% +0.2)/ °C |
