电容器纸介电常数测试仪

电容器纸介电常数测试仪

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2022-05-01 18:30:02
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北京北广精仪仪器设备有限公司

北京北广精仪仪器设备有限公司

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电容器纸介电常数测试仪测量技术在民用,工业以及军事等各个领域应用广泛。本文主要对介电常数测量的常用方法进行了综合论述。首先对标准进行了对比总结;然后分别论述了几种常用测量方法的基本原理、适用范围、
优缺点及发展近况;后对几种测量方法进行了对比总结,得出结论。

详细介绍

 

电容器纸介电常数测试仪满足标准:GBT1409-2006测量电气绝缘材料在工频、音频、高频(包括米波波长在内)下电容率和介质损耗因数的*方法

电容器纸介电常数测试仪概述
介质损耗和介电常数是各种电瓷、装置瓷、电容器等陶瓷,还有复合材料等的一项重要的物理性质,通过测定介质损耗角正切tanδ及介电常数(ε),可进一步了解影响介质损耗和介电常数的各种因素,为提高材料的性能提供依据;仪器的基本原理是采用高频谐振法,并提供了,通用、多用途、多量程的阻抗测试。它以单片计算机作为仪器的控制,测量核心采用了频率数字锁定,标准频率测试点自动设定,谐振点自动搜索,Q值量程自动转换,数值显示等新技术,改进了调谐回路,使得调谐测试回路的残余电感减至低,并保留了原Q表中自动稳幅等技术,使得新仪器在使用时更为方便,测量值更为精确。仪器能在较高的测试频率条件下,测量高频电感或谐振回路的Q值,电感器的电感量和分布电容量,电容器的电容量和损耗角正切值,电工材料的高频介质损耗,高频回路有效并联及串联电阻,传输线的特性阻抗等。
该仪器用于科研机关、学校、工厂等单位对无机非金属新材料性能的应用研究。


A型高频Q表和C型高频Q表主要区别

 

A

C

测试频率范围

25kHz~60MHz

100kHz~160MHz

主调电容控制

传感器

步进马达

电容搜索

 

A/C高频Q表能在较高的测试频率条件下,测量高频电感或谐振回路的Q值,电感器的电感量和分布电容量,电容器的电容量和损耗角正切值,电工材料的高频介质损耗,高频回路有效并联及串联电阻,传输线的特性阻抗等。该仪器广泛地用于科研机关、学校、工厂等单位。A/C高频Q表是北广精仪仪器设备有限公司研制的产品,它以DDS数字直接合成方式产生信号源,频率达60MHz/160MHz,信号源具有信号失真小、频率精确、信号幅度稳定的优点,更保证了测量精度的精确性。A主电容调节用传感器感应,电容读数精确,且频率值可设置。C主电容调节用步进马达控制,电容读数更加精确,频率值和电容值均可设置。A/C电容、电感、Q值、频率、量程都用数字显示,在某一频率下,只要能找到谐振点,都能直接读出电感、电容值,大大扩展了电感的测量范围,而不再是固定的几个频率下才能测出电感值的大小。A/C*的谐振点频率自动搜索或电容自动搜索功能,能帮助你在使用时快速地找到被测量器件的谐振点,自动读出Q值和其它参数。Q值量程可手动或自动转换。

工作特性
   1.Q值测量
  a.Q值测量范围:2~1023;
  b.Q值量程分档:30、100、300、1000、自动换档或手动换档;
c.标称误差
频率范围 25kHz~10MHz  固有误差≤5%±满度值的2%   工作误差≤7%±满度值的2%
频率范围 10MHz~60MHz  固有误差 ≤6%±满度值的2%  工作误差≤8%±满度值的2%
电感测量范围 14.5nH~8.14H
直接测量范围 1-460P  主电容调节范围 40~500pF  准确度 150pF以下±1.5pF;150pF以上±1%
 
 注:大于直接测量范围的电容测量见使用方法。
信号源频率覆盖范围
频率范围 10kHz~70MHz
CH1 10~99.9999kHz CH2  100~999.999kHz  CH3 1~9.99999MHz CH4 10~70MHz ​频率指示误差3×10-5±1个字

  5.Q合格指示预置功能:预置范围:5~1000
   6.Q表正常工作条件
   a. 环境温度:0℃~+40℃;
  b.相对湿度:<80%;
  c.电源:220V±22V,50Hz±2.5Hz。
   7.其他
  a.消耗功率:约25W;
   b.净重:约7kg;
   c.外型尺寸:(宽×高×深)mm:380×132×280。

高压电桥采用典型的西林电桥线路。C4桥臂在基本量程时,与R4桥臂并联,测量数值为正损耗因数。结构采用了双层屏蔽。并通过辅桥的辅助平衡,消除寄生参数对电桥平衡的影响。辅桥由电位自动电位跟踪器与内层屏蔽(S)组成。自动跟踪器由电子元器件组成。它在桥顶B处取一输入电压,通过放大后,在内屏蔽(S)产生一个与B电位相等的电压。当电桥在平衡时,A,B,S三点电位必然相等,从而达到自动跟踪的目的。本电桥在平衡过程中,辅桥采用自动电位跟踪,在主桥平衡过程的同时,辅桥也自动跟踪始终处于平衡的状态,用户只要对主桥平衡进行操作就能得到可靠的所需数据。同时也有效的抑制了电压波动对平衡所带来的影响。在指零部分,采用了指针式电表指示,视觉直观,分辨清楚,克服了以往振动式检流计的缺点。

高压电桥是本公司推出的新一代高压电桥,主要用于测量工业绝缘材料的介质损耗(tgδ)及介电常数(ε)。符合GB1409、GB5654及GB/T1693, ASTM D150-1998(2004) 固体电绝缘材料的交流损耗特性及介电常数的试验方法其采用了西林电桥的经典线路,内附0-2500的数显高压电源及100PF标准电容器,并可按用户要求扩装外接标准电容线路。

性能特点:
1.    平板电容器
极片尺寸:φ25.4mm\\φ50mm
极片间距可调范围和分辨率:≥10mm,±0.01mm
2.    园筒电容器
电容量线性:0.33pF / mm±0.05 pF
长度可调范围和分辨率:≥0~20mm,±0.01mm
3.  夹具插头间距:25mm±1mm
4.  夹角损耗角正切值:≤4×10-4(1MHz时)
 

工作原理
本测试装置是由二只测微电容器组成,平板电容器一般用来夹持被测样品,园筒电容器是一只分辨率高达0.0033pF的线性可变电容器,配用仪器作为指示仪器,绝缘材料的损耗角正切值是通过被测样品放进平板电容器和不放进样品的Q值变化,由园筒电容器的刻度读值变化值而换算得到的。同时,由平板电容器的刻度读值变化而换算得到介电常数。

桥体内附电位跟踪器及指零仪,外围接线及少。
电桥采用接触电阻小,机械寿命长的十进开关,保证测量的稳定性
仪器具有双屏蔽,能有效防止外部电磁场的干扰。
仪器内部电阻及电容元件经特殊老化处理,使仪器技术性能稳定可靠。
内附高压电源精度3%
内附标准电容损耗﹤0.00005,名义值100pF

北京北广精仪主营产品:*材料试验机(拉力机)、电压击穿试验仪、体积表面积电阻率测试仪、介电常数与介质损耗测试仪、低温脆性冲击试验仪、耐电弧性能试验仪、高压漏电起痕试验仪、环境试验箱、维卡热变形试验仪、转子硫化仪、熔体流动速率仪、水平垂直燃烧试验仪、门尼粘度试验仪、阿克隆磨耗试验机、气动冲片机、手动冲片机、滑动摩擦磨损试验机、哑铃制样机、简支梁冲击试验机、悬臂梁冲击试验机、氧指数测定仪、水分测定仪、海绵密度测定仪、橡胶回弹仪等

Beijing Beiguang precision instrument main products: universal material testing machine (tensile machine), voltage breakdown tester, volume surface resistivity tester, dielectric constant and dielectric loss tester, low temperature brittleness impact tester, arc resistance tester, high voltage leakage trace tester, environmental test box, Vicat thermal deformation tester, rotor vulcanizer, melt flow rate tester, water Horizontal and vertical combustion tester, Mooney viscosity tester, Akron abrasion tester, pneumatic punching machine, manual punching machine, sliding friction abrasion tester, dumbbell prototype, simple beam impact tester, cantilever impact tester, oxygen index tester, moisture tester, sponge density tester, rubber rebound tester, etc
部分产品介绍:
硫化橡胶耐电压强度试验仪/符合国标GB/T1408-2006、ASTMD149
体积表面电阻率测试仪/符合国标GB/T1410-2006、ASTMD257-99
介电常数介质损耗测试仪/符合国标GB/T1409-2006
塑料球压痕硬度测试仪/符合国标GB/T3398-2008
橡胶塑料摩擦磨损试验机/符合国标GB/T3960-1983
热变形维卡温度测定仪/符合国标GB/T8802-2001
熔体流动速率测定仪/符合国标GB/T3682-2000
水平垂直燃烧试验仪/符合国标GBGB/T5169.16-2002、ANSI/UL94
氧指数测定仪GB/T2406.2-2009GB/T2406.1-2008
垂直燃烧试验机符合国标GB/T18380.11-2008 
门尼粘度试验机符合国标GB/T 1232、GB/T1233、ISO289、ISO667
维卡软化点测试仪符合国标GB/T 1633、GB/T1634、GB 8802
无转子硫化仪符合国标GB/T16584

售后内容:
我公司派工程师负责安装调试及培训。

产品自客户验收之日起,免费保修2年,终身维修。

1、设备安装调试:
免费为用户提供所购仪器的安装调试服务。在进行安装调试前用户方应提供相应的准备工作,并予以提前通知,具体安装调试日期双方可以协商而定。设备安装调试由多年行业*工程师免费进行。保证用户可以正确使用、软件操作和一般维护以及应及故障的处理。

2、培  训:
我公司工程师免费为用户提供操作人员培训,直到操作人员能独立操作为止。

3、设备验收标准:
用户方按订货技术要求进行验收。并符合标准要求。设备验收在用户方进行并由我公司安装调试技术人员和用户共同在维修报告上签字以确认仪器的调试工作完成。

4、设备维修服务:
我公司产品自用户现场调试验收合格后2年内免费保修,终身维护。在2年免费保修期内产品发生非人为质量问题,我公司为客户提供免费维修。如产品在免费保修期外出现故障,维修服务只适当收取材料成本费。

5、技术zhi持:
对于所需仪器的用户,根据用户的要求提供专业的技术方案。除了常规的仪器服务外,我公司技术部还可为用户提供各种非常规设备的技术zhi持。

6、售后响应:
在接到用户维修邀请后,2小时内做出反应,并给予解决。如未解决,我公司指派工程师及时到达用户现场,解决问题至设备正常使用为止。

After-sale service
After sales content:
Our company sends engineers to be responsible for installation, debugging and training.
Products from the date of customer acceptance, free warranty for 2 years, life-long maintenance.
1. Equipment installation and commissioning:
Provide free installation and debugging services for users. Before installation and commissioning, the user shall provide corresponding preparations and give advance notice. The specific installation and commissioning date can be determined by both parties through consultation. The equipment installation and debugging are carried out by senior engineers for many years free of charge. Ensure that the user can use the software correctly, operate and maintain the software, and deal with the faults.
2. Training:
Our company's engineers provide free operator training for users until the operators can operate independently.
3. Equipment acceptance standard:
The user shall conduct acceptance according to the order technical requirements. And meet the requirements of national standards. The equipment acceptance shall be conducted by the user side, and the installation and commissioning technicians of our company and the user shall jointly sign the maintenance report to confirm the completion of the instrument commissioning.
4. Equipment maintenance service:
Our company's products are free of charge for warranty and lifetime maintenance within 2 years after the user's on-site commissioning and acceptance. During the 2-year free warranty period, our company provides free maintenance for customers in case of non-human quality problems. If the product breaks down outside the free warranty period, the maintenance service will only charge the material cost properly.
5. Technical support:
For the users of required instruments, professional technical solutions shall be provided according to the requirements of users. In addition to conventional instrument services, our company's technical department can also provide users with technical support for various unconventional equipment.
6. After sales response:
After receiving the user's maintenance invitation, respond within 2 hours and solve it. If it is not solved, our company will assign engineers to arrive at the user's site in time to solve the problem until the equipment is in normal use. 售后内容:
我公司派工程师负责安装调试及培训。

产品自客户验收之日起,免费保修2年,终身维修。

1、设备安装调试:
免费为用户提供所购仪器的安装调试服务。在进行安装调试前用户方应提供相应的准备工作,并予以提前通知,具体安装调试日期双方可以协商而定。设备安装调试由多年行业*工程师免费进行。保证用户可以正确使用、软件操作和一般维护以及应及故障的处理。

2、培  训:
我公司工程师免费为用户提供操作人员培训,直到操作人员能独立操作为止。

3、设备验收标准:
用户方按订货技术要求进行验收。并符合标准要求。设备验收在用户方进行并由我公司安装调试技术人员和用户共同在维修报告上签字以确认仪器的调试工作完成。

4、设备维修服务:
我公司产品自用户现场调试验收合格后2年内免费保修,终身维护。在2年免费保修期内产品发生非人为质量问题,我公司为客户提供免费维修。如产品在免费保修期外出现故障,维修服务只适当收取材料成本费。

5、技术zhi持:
对于所需仪器的用户,根据用户的要求提供专业的技术方案。除了常规的仪器服务外,我公司技术部还可为用户提供各种非常规设备的技术zhi持。

6、售后响应:
在接到用户维修邀请后,2小时内做出反应,并给予解决。如未解决,我公司指派工程师及时到达用户现场,解决问题至设备正常使用为止。

After-sale service
After sales content:
Our company sends engineers to be responsible for installation, debugging and training.
Products from the date of customer acceptance, free warranty for 2 years, life-long maintenance.
1. Equipment installation and commissioning:
Provide free installation and debugging services for users. Before installation and commissioning, the user shall provide corresponding preparations and give advance notice. The specific installation and commissioning date can be determined by both parties through consultation. The equipment installation and debugging are carried out by senior engineers for many years free of charge. Ensure that the user can use the software correctly, operate and maintain the software, and deal with the faults.
2. Training:
Our company's engineers provide free operator training for users until the operators can operate independently.
3. Equipment acceptance standard:
The user shall conduct acceptance according to the order technical requirements. And meet the requirements of national standards. The equipment acceptance shall be conducted by the user side, and the installation and commissioning technicians of our company and the user shall jointly sign the maintenance report to confirm the completion of the instrument commissioning.
4. Equipment maintenance service:
Our company's products are free of charge for warranty and lifetime maintenance within 2 years after the user's on-site commissioning and acceptance. During the 2-year free warranty period, our company provides free maintenance for customers in case of non-human quality problems. If the product breaks down outside the free warranty period, the maintenance service will only charge the material cost properly.
5. Technical support:
For the users of required instruments, professional technical solutions shall be provided according to the requirements of users. In addition to conventional instrument services, our company's technical department can also provide users with technical support for various unconventional equipment.
6. After sales response:
After receiving the user's maintenance invitation, respond within 2 hours and solve it. If it is not solved, our company will assign engineers to arrive at the user's site in time to solve the problem until the equipment is in normal use.

 

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