| 详细介绍：
TX-300C型金属导体电阻率仪TX300C
一、仪器特点
TX-300C型是属于高分辩率、高精度的基准机型，可以用于金属导体电阻率、电导率测量的基准检测仪器，广泛应用于电力电工、电线电缆企业质量检验部门、科研机构、高等院校、各级材料检定机构。
TX-300C除具备TX-300A/TX-300B的主要特点外，还具备有：
1、增加了10A恒流源，仪器的分辨率达到10－8Ω（0.01µΩ），可以测量Ø0.1mm～Ø40mm所有金属导线的电导率值。
2、仪器自带的温度检测系统达到±0.1℃的精度，确保了导线电导率换算到20℃值的精确度。
3、采用标准1米通用标准测试夹具，可测线径为Ø1～40mm或截面积0.78～1256 mm2异型导体的金属导线。
二、技术参数
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参数值
项目名称
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电阻率
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电导率
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电阻
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测量范围
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0.01µΩ·m～2.5µΩ·m
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0.4MS/m～100MS/m
0.69%IACS～172%IACS
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0.01µΩ～2kΩ
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分辨率
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10－4～10－6µΩ·m
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0.01～0.001%IACS
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0.01µΩ（I=10A）
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精度
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±0.25%
±(0.1%＋  )当导体电阻  ＜10µΩ时
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±0.25%
±(0.1%＋ )当导体电阻 ＜10µΩ时
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10µΩ～2kΩ：±0.15%
＜10µΩ：± ()
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温度测量
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10℃～35℃ 精度±0.1℃(0℃～＋40℃)
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仪器内部恒流电流
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16µA档～10A档（依据测量要求仪器自动选择）
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线缆测试夹具
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配1000mm标准测试夹具或其他尺寸的非标准测试夹具，测量线材直径：Ø1mm～Ø40mm
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自动温度补偿
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测量值自动补偿为20℃时数值
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线缆测量项目
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实心导体电阻率ρv、电导率σ、电阻R、单位长度电阻Rl、质量电阻率ρm
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打印输出数据
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日期、时间、温度修正系数α、导线规格、导体和线缆的各项测量数值
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正常工作环境
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温度0℃～＋40℃ 相对湿度0～80%
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显示
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大屏幕液晶，可同时显示多项测量参数，带背光
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供电
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220VAC±10%，50～60Hz；功率160W
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内部存储器
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可保存1000组测量数据
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PC机通讯方式
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RS232串口
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主机尺寸
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360mm(W)*160mm(H)*300mm(D)
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主机外壳
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铝合金外壳
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包装及防护
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主机、测试夹具、通讯电缆、校正电阻、操作手册及光盘、微型打印机、四端电阻测试线夹、温度传感器
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Type TX-300C metal conductor resistance testerTX300C
A, instrument characteristics
Type TX-300C is a reference type belongs to highresolution, high precision, and can be used for referenceinstrumentation metal conductor resistance, conductivity measurement, is widely used in electric power, electric wire and cable enterprise quality inspection departments,research institutions, colleges and universities, allmaterial verification mechanism.
TX-300C in addition to the main features of TX-300A/TX-300B, also have:
1, an increase of 10A constant current source, resolution of the instrument to reach 10 - 8 Ω (0.01 µ Ω), measuring the conductivity of 0.1mm ～ Ø Ø can 40mm all metal wire value.
The temperature detection system, instrument with 2reached ± 0.1 ℃ accuracy, ensure that the wire conductivity conversion to 20 ℃ value accuracy.
3, the standard 1 meters standard test fixture,measurable wire diameter is 1 students ~ 40mm or cross-sectional area of 0.78 ~ 1256 mm2 shaped conductorwire.
Two, the technical parameters
Parameter values
Project name resistivity conductivity resistance
The measurement range of 0.01 µ Ω· m to 2.5 µ Ω· m 0.4MS/m ~ 100MS/m
0.69%IACS to 0.01 µ 172%IACS ohm to 2K ohm
Resolution 10 - 4 - 10 - 6 µ Ω· m 0.01 ~ 0.001%IACS0.01 µ Ω (I=10A)
Accuracy of ± 0.25%
+ (0.1% +) when the conductor resistance < 10 µ ohm ± 0.25%
+ (0.1% +) when the conductor resistance < 10 µ Omega10 µ ohm to 2K ohm: + 0.15%
< 10 µ Q: ± ()
Measurement of temperature 10 ℃ ~ 35 ℃ accuracy of ± 0.1 ℃ (0 ℃ ~ 40 ℃)
The inside of the instrument constant current 16 µ A fileto 10A file (on the basis of the measurementrequirements of instrument automatic selection)
Non standard test fixture wire test fixture with 1000mm standard test fixture or other size, measuring the diameter of wire: Ø Ø 1mm ~ 40mm
Automatic temperature compensation measurementautomatic compensation is 20 ℃ numerical
Cable measuring project solid conductor resistivity ρ V, conductance σ R, resistance, resistance per unit lengthRl, mass resistivity
Print data date, time, temperature correction coefficient,conductor, conductor and cable specifications all measurement values
The normal working environment temperature is 0 ℃ ~40 ℃, relative humidity 0 ~ 80%
Display of large screen LCD, can display various measurement parameters, with backlight
Power supply 220VAC + 10%, 50 ~ 60Hz; power 160W
Internal memory can save 1000 groups of measuringdata
PC RS232 serial communication
Host size 360mm (W) *160mm (H) *300mm (D)
The host shell aluminum alloy shell
Packing and protection of the host, test fixture,communication cable, correction resistance, operation manual and CD, micro printer, four terminal resistancetest clamp, temperature sensor
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