ACL800兆欧表中文说明书

数字兆欧表说明书由于输入输出端子、测试柱等均有可能带电压，在插拔测试线、电源插座时，会产生电火花，小心电击，避免触电危险，注意人身安全！安全要求请阅读下列安全注意事项，以免人身伤害，为了避免可能发生的危险，只可在规定的范围内使用。

只有合格的技术人员才可执行维修。

—防止火灾或人身伤害使用适当的电源线。

只可使用专用并且符合规格的电源线。

正确地连接和断开。

当测试导线与带电端子连接时，请勿随意连接或断开测试导线。

注意所有终端的额定值。

为了防止火灾或电击危险，请注意所有额定值和标记。

在进行连接之前，请阅读使用说明书，以便进一步了解有关额定值的信息。

使用适当的保险丝。

只可使用符合规定类型和额定值的保险丝。

避免接触裸露电路和带电金属。

有电时，请勿触摸裸露的接点和部位。

请勿在潮湿环境下操作。

请勿在易爆环境中操作。

－安全术语警告：警告字句指出可能造成人身伤亡的状况或做法。

目录第一章概述 (5)第二章介绍 (5)一、特性 (5)二、技术指标 (6)三、仪表结构 (7)四、仪表原理 (8)第三章使用方法 (9)一、准备工作 (9)二、开始测试 (10)三、屏蔽端使用方法 (11)四、电池充电 (12)第一章概述随着我国电力工业的快速发展，电气设备预防性实验是保障电力系统安全运行和维护工作中的一个重要环节。

绝缘诊断是检测电气设备绝缘缺陷或故障的重要手段。

绝缘电阻测试仪（兆欧表）是测量绝缘电阻的专用仪表。

1990年5月批准实施的JJG662-89《绝缘电阻表（兆欧表）》已把它作为强制检定的仪表之一。

目前，电气设备（如变压器、发电机等）朝着大容量化、高电压化、结构多样化及密封化的趋势发展。

这就需要绝缘电阻测试仪本身具有容量大、抗干扰能力强、测量指标多样化、测量结果准确、测量过程简单并迅速、便于携带等特点。

HT2500系列绝缘电阻测试仪采用超薄形张丝表头、多种电压等级输出、容量大、抗干扰强、交直流两用、操作简单、具有时间提示功能。

ACL800表面电阻测试仪ACL800表面电阻测试仪详细参数可测量阻抗、湿度和温度。

测量表面阻抗103-1012欧姆/m2，测量电阻103-1012欧姆·相对湿度：10％-90％RH·温度：0℃-37.8℃·高精度－全量程范围内·包含电极：--2个5磅重，2.5英寸RTT、RTG盘形电极--2个3英寸平行表面阻抗测试电极·液晶数码显示·可充电电池·可测量桌垫、地板涂料层、漆面、腕带、工作服、鞋(鞋套)、袋子和容器ACL800型兆欧表是依据EOS/ESD，CECC、ASTM和UL测试规程设计的，用于测量所有导电型、抗静电型及静电泄放型表面的阻抗或电阻。

使用容易，高品质，高可靠度，该仪表还可测量影响电性能的相对湿度和温度。

测量阻抗温度和湿度。

“湿度和温度会影响阻抗，所以必须测量”特点：·测量阻抗、温度和湿度，符合ESD标准，S4.1,S7.1和S11.11·103-1012欧姆/厘米2量程，可测试各种材料的电性能。

·10伏/100伏测量标度，适合于标准规定的工作台面和地面。

·塑料仪表保护箱，防止仪表受损·重量轻，只有150Z(425g)，携带方便·液晶数码显示，容易使用，读数方便·自动断电功能，延长电池使用寿命·自动回零，保证精确度·平行电极，5磅重探头及内置阻抗探头，均符合ASTM，EOS和CECC标准·一年质量保修期·美国制造，信心、质量、服务的保证·NIST追踪，ISO9000保证·可替换探头，延长使用寿命·9V直流电或镍镉充电电池或交流变压器，在美国及海外均通用。

ACL800型兆欧表世界上最好的阻抗表，集阻抗、湿度、温度三种测量仪表于一体。

型号 ACL800表面阻抗 103-1012Ω/cm2电阻 103-1012Ω湿度 10％-90％RH温度 32℉ -100℉(0℃-37.8℃)电压 10v/100v电源 9V标准电池配置：仪器，两个重锤，两条重锤连接线，一条接地线，9V电池，万用充电器一个，工具箱，说明书，校正证书ACL800兆欧表操作手册测量前，首先确保待测表面干净无污染。

实用电工作业操作手册压的大小，首先将表笔插在相应的插孔上，然后将两只表笔分别同时触及被测点，表盘读数即为被测两点的电压值。

（4）正确读数：钳流表刻度盘上有红、黑两条刻度线。

红色刻度线为电压刻度线，供测量电压时读数用；黑色刻度线为电流刻度线，供测量电流时读数用。

实际测量值应是指针指示值与量程开关倍率的乘积。

例如，若指针指示值为150A（表盘刻度值为0～300A），量程开关若分别位于30A、300A和3 000A时，则实际电流值分别为15A、150A和1 500A。

（5）注意安全：在测量过程中严禁转换量程挡。

因其钳形铁芯互感器是一个电流互感器，它的二次匝数很多，转换时相当于二次开路，将感应出很高的电压，可能会将绝缘击穿，造成仪表损坏和人身触电事故。

测量完毕应将钳流表的钳口松开，慢慢取出电线，并注意将其量程开关拨在最高电流挡或电压挡位置，以防下次使用时因粗心未选用合适的量程，致使表针打弯或造成其他事故。

另外，在潮湿和雷雨天气，为保证安全禁止在室外用钳形电流表测量。

2．钳形漏电流表钳形漏电流表是近几年推出的一种新型交流电流测试仪表，外形与普通的钳形电流表相似，实际上是一种高灵敏度的电流互感器。

钳形漏电流表一般既可以测量低压漏电流的大小，又可以测出漏电流中的有功分量及绝缘电阻的值。

测量运行中的用电器或电线的漏电流时，应将火线与零线2根电线（指单相交流电器）或将3根火线（指三相交流电器）一块卡在钳形漏电流表内，这是其与普通钳形电流表的最大区别。

目前，共立仪器公司（KYORITSU）生产的钳形漏电流表漏电流可测到4mA，工作电流可测到1 000A，兼有普通钳流表的功能，可供选择。

3.3.2摇表（兆欧表）摇表因其刻度盘读数为兆欧，故又称兆欧表，是一种测量电气设备绝缘电阻的仪表。

兆欧表有指针式和数字式两种，常见外形如图3-9— 118 —。

兆欧表使用说明绝缘电阻表又称兆欧表或摇表，用于测量各种电机，电缆，变压器原器件，家用电器和其它电器设备的绝缘电阻值。

1安全上的警告1．1本操作使用说明包含了警告讯息及安全规定，当使用本机时请确实遵守，以确保使用者的操作安全及仪器安全，因此于使用本机前请先仔细地彻底的阅读本说明。

1．2绝缘测试是用来测试已断电的电路（死线）或装置，请不要在有电的情况下（活线）做测试。

1．3在每次测试时请切记待测电路或装置必须是不带电的，请确认您可以清楚的看到待测电路或装置已与电力系统切离，在作绝缘测试前，在尚未确认是否带电时请勿做任何测试。

1．4如果您不知道如何开始特高阻测试（高压）请先与待测设备的制造商讨论，有些设备装置了高敏度的电子元件，可能在高直流的电压下造成损坏，原制造商可事先对此提出警告避免此种损坏。

1．5本测试器能产生10KV的直流高电压，于测试时请不要接触测试导线或被测设备，请不要尝试用本机器去刺激或惊吓别人。

潮湿的环境，流水的水笼都有可能造成触电而导致心脏停止。

1．6请时常注意您的仪器，测试导线以及其它附件是否有损坏的痕迹或变形，如果有任何异常发生（如：导线破损、机关壳裂缝，等），请不要进行任何测试。

1．7在做测试的过程中请注意不要让自己成为接地的通路，不要接触外露的金属管，出水口、固定物等，它们可能会让您成为接地电位。

另外请将您的身体与大地隔绝，例如使用干布、绝缘鞋、绝缘毯或其它保证绝缘的物质。

1．8为避免触电事故，在工作电压高于40VDC或20V AC时请使用警告标志。

1．9为避免触电事故，于测试中请勿触摸任何裸露的线或电路接点或被测物，即使已完成测试，在尚未确认放电安全前，也请勿触摸，是否已放电完成，可由数位的电压读值确认。

1．10请勿在易爆的大气中使用本机（如：可燃性气体、挥发液体及粉尘）1．11请不要尝试自行校正或维修本机，除非有经过训练的人员在场指导，或直接交由具有资格或受过训练的工程师处理。

兆欧表操作规程
一、用途
本仪表用于测量各种电机、电缆、变压器、电讯元件、家用电器和其它电气设备的绝缘电阻。

二、使用条件
温度-25～+40℃相对湿度≤80% 工作位置水平
摇柄额定转速 120转/分
三、使用操作
1.使用必须在水平位置且远离外磁场。

2.绝缘测定，将被测物的两端分别连接在“接地”及“线路”两线柱上，按额定转速摇柄，可测的电阻值。

3.通地测定，将被测端接“线路”而以良好之地线接于“接地”柱上。

按额定转速摇柄即可测得电阻值。

4.在进行电缆缆心对缆壳的绝缘测定时，被测两端分别连接在“线路”与“接地”两线柱外，再将电缆壳芯之间的内层绝缘物接保护环（屏蔽）接线柱（以消除因表面漏电而引起的测量误差）。

然后按额定转速转动摇柄，可测的电阻数值。

四、注意事项
1.连接接线柱与被测物之间的两根导线不能用绞线。

2.转动摇柄时由慢到快并保持120转/分稳速，发现指针指零时不匀许继续摇动。

3.在雷电或附近带高压导体的设备时，禁用仪器测量，只有设备不带电又不可能受其它电源感应而带电时才能进行。

4.在进行测量前后对被测物一定要进行充放电。

5.应尽量避免剧烈、长期的震动。

6.仪表不用时放在固定的橱内，环境温差不宜太大，空气清洁、无腐蚀气体。

兆欧表操作规程1 操作前的检查1.1 检查兆欧表是否在有效期内，并检验判断兆欧表的好坏。

检验方法：将兆欧表平放，使L、E两个端钮开路，摇动手摇发电机的手柄，使发电机的转速达到额定转速120转/分，此时指针应指在“∞”（即无穷大）刻度处；停止摇动后用导线短接L、E接线柱，再缓慢摇动手摇发电机的手柄（必须缓慢摇动，以免电流过大而烧毁绕组），此时指针应迅速归“0”。

如果指针不指在“∞”或“0”的刻度线上，应检修或送检兆欧表；1.2检查确认被测电气设备表面干净无污物。

2 操作步骤2.1 断开被测物电源，并对被测物充分放电；2.2 将兆欧表置于远离磁场的位置，并水平放置；2.3 绝缘测定时，将被测定的两端分别连于“L”和“E”两个接线柱上；通地测定时，将被测端及良好的地线依次接于“L”和“E”两个接线柱上；2.4 依顺时针方向转动手摇发电机的手柄，使速度逐渐增至每分钟120转左右，在调速器发生滑动后，读取并记录读数；2.5 测量完毕后，收拾好兆欧表。

3 技术要求3.1 摇测绝缘电阻过程中，转速由慢逐渐到快摇动手柄，不得忽快忽慢，以免指针摆动过大而引起误差。

若发现指针指零，表明被测绝缘物存在短路故障，此时不得继续摇动手柄，以防表内动圈因发热而损坏。

3.2 测量电容器、电缆、大容量变压器和电机等的绝缘电阻时，要有一定的充电时间，电容量越大，充电时间越长，一般以兆欧表转动1分钟后的读数为准；3.3 测量电容性电气设备的绝缘电阻时，应在取得稳定读数后，先取下测量线，再停止摇动手柄，测完后立即将被测设备进行放电。

3.4 在兆欧表未停止转动和被测设备未放电之前，不得用手接触测量部分和兆欧表的接线柱或进行拆除导线等，以免发生触电事故。

3.5 在测定特高电阻时，保护环应接于被测两端之间最内层的绝缘层上以消除因漏电而引起的读数误差。

兆欧表实用操作手册兆欧表俗称摇表，它的刻度是以兆欧（MΩ）为单位的。

它是电工常用的一种测量仪表，主要用来检查电气设备、家用电器或电气线路对地及相间的绝缘电阻，以保证这些设备、电器和线路工作在正常状态，避免发生触电伤亡及设备损坏等事故。

数字兆欧表工作原理为由机内电池作为电源经DC/DC变换产生的直流高压由E极出经被测试品到达L极，从而产生一个从E到L极的电流，经过I/V变换经除法器完成运算直接将被测的绝缘电阻值由LCD 显示出来。

一、使用前准备第一步：检查兆欧表是否能正常工作，将兆欧表水平放置。

第二步：空摇兆欧表手柄，指针应该指到无穷大（最左边）处。

第三步：使L 和E 两接线桩输出线瞬时短接，再慢慢摇动手柄，指针应迅速指零（最右边）。

操作步骤：1、首先选用与被测元件电压等级相适应的摇表，对于５００V及以下的线路或电气设备，应使用５００V或１０００V的摇表。

对于５００V以上的线路或电气设备，应使用１０００V或２５００V的摇表。

2、用摇表测试高压设备的绝缘时，应由两人进行。

3、测量前必须将被测线路或电气设备的电源全部断开，即不允许带电测绝缘电阻。

并且要查明线路或电气设备上无人工作后方可进行。

4、摇表使用的表线必须是绝缘线，且不宜采用双股绞合绝缘线，其表线的端部应有绝缘护套；摇表的线路端子“L”应接设备的被测相，接地端子“E”应接设备外壳及设备的非被测相，屏蔽端子“G”应接到保护环或电缆绝缘护层上，以减小绝缘表面泄漏电流对测量造成的误差。

5‘’测量前应对摇表进行开路校检。

摇表“L”端与“E”端空载时摇动摇表，其指针应指向“∞”；摇表“L”端与“E”端短接时，摇动摇表其指针应指向“０”。

说明摇表功能良好，可以使用。

6、测试前必须将被试线路或电气设备接地放电。

测试线路时，必须取得对方允许后方可进行。

7、测量时，摇动摇表手柄的速度要均匀１２０r／min为宜；保持稳定转速１min后，取读数，以便躲开吸收电流的影响。

ACL800兆欧表中文说明书ACL800测量阻抗温度和湿度。

“湿度和温度会影响阻抗，所以必须测量”测量表面阻抗103-1012欧姆，测量电阻103-1012欧姆·相对湿度： 10％-90％RH·温度： 32。

F-100。

F(0℃℃)·高精度－全量程范围内ACL800详细介绍ACL800测量阻抗温度和湿度。

“湿度和温度会影响阻抗，所以必须测量”测量表面阻抗103-1012欧姆/□，测量电阻103-1012欧姆·相对湿度： 10％-90％RH·温度： 32。

F-100。

F(0℃℃)·高精度－全量程范围内·包含电极：--2个5磅重，英寸RTT、RTG盘形电极--2个3英寸平行表面阻抗测试电极·液晶数码显示PP9V电池·可测量桌垫、地板涂料层、漆面、腕带、工作服、鞋(鞋套)、袋子和容器ACL800型兆欧表是依据EOS/ESD，CECC、ASTM和UL测试规程设计的，用于测量所有导电型、抗静电型及静电泄放型表面的阻抗或电阻。

使用容易，高品质，高可靠度，该仪表还可测量影响电性能的相对湿度和温度。

特点：·测量阻抗、温度和湿度，符合ESD标准，,和·103-1012欧姆/□量程，可测试各种材料的电性能。

·10伏/100伏测量标度，适合于标准规定的工作台面和地面。

·塑料仪表保护箱，防止仪表受损·重量轻，只有150Z(425g)，携带方便·液晶数码显示，容易使用，读数方便·自动断电功能，延长电池使用寿命·自动回零，保证精确度·平行电极，5磅重探头及内置阻抗探头，均符合ASTM，EOS和CECC标准·一年质量保修期·美国制造，信心、质量、服务的保证·NIST追踪，ISO9000保证·可替换探头，延长使用寿命·9V直流电或PP碱性电池或交流变压器，在美国及海外均通用。

ACL 800 MEGOHMMETEROPERATION MANUALNOTE: THIS MANUAL IS NOT TO BE SEPARATED FROM METER!ACL 800 MegohmmeterThe ACL 800 Megohmmeter kit measures surface resistivity, resistance, temperature and humidity. It is designed to test conductive, anti‐static, and static dissipative surfaces for electrical resistivity/resistance according to EOS/ESD, CECC, ANSI, ASTM and UL test procedures.The internal parallel electrodes comply with DIN EN 100 015/1 & ANSI/ESDA‐S11.11. The five pound electrodes can be externally connected for tests according to IEC 61340‐4‐1, ANSI/ESDA S4.1 & ANSI/ESDA S7.1.ACL 800 Megohmmeter Includes:TesterTwo 5lb probesOne ground cordTwo accordion cables (stereo to banana)110 power adapter*9 volt batteryFoam lined carrying caseCertificate of calibration*ACL 800 Celsius models come equipped with 220v power adapter unless specifiedACL 800 Optional AccessoriesConcentric Ring ProbeMiniature Ring ProbesGarment Clips for smocksLimitsResistivity: 103 ‐1012 ohms/sq.Resistance: 103 ‐1012 ohmsRelative Humidity: 10% ‐ 90% RHTemperature: 32°F to 100°F or 0°C – 37.7°C if Celsius model was purchasedMeasuring voltage: 10v and 100vI NTRODUCTIONThe ACL 800 Megohmmeter is a dependable and easy to use audit kit for conductive and dissipative surfaces. This meter is designed to be used in all facets of material production including engineering, maintenance, quality control, incoming inspection, manufacturing, research, or sales departments for the testing of anti‐static mats, floor finishes, paints, wrist straps, smocks, foot wear, bags and containers.When using the built‐in electrodes, the meter’s test values for surface resistivity are in ohms per square. When using the external five pound electrodes, the meter’s test values for resistance are in ohms (although they are displayed in ohms/sq.).D ECADE S CALE103 = 1 kilohm104 = 10 kilohms105 = 100 kilohms106 = 1 meg ohm107 = 10 meg ohms108 = 100 meg ohms109 = 1000 meg ohms1010 = 10,000 meg ohms1011 = 100,000 meg ohms1012 = 1,000,000 meg ohmsThe test value is indicated on the LCD display. Unlike meters with LEDS that indicate only the decade the measured value falls within, the ACL 800 will show the actual value.27 ohms (2.7 x 107) is displayed as 2.7 e07 ohms/sqT EST V OLTAGEThe test voltage ranges are 10v and 100v. According to ESDA standards S4.1, S7.1, and S11.11 one should choose 10v for conductive surfaces less than 106 and 100v for materials 106 or greater. . If the meter cannot apply the correct voltage automatically, it will advise you to change to the proper setting manually. Use the switch in front of the meter to change voltage setting.As defined by the ESD Association, values indicate the following:Voltage Range Definition 10 volt < 106 ohms per square Conductive 100 volt 106 – 1011 ohms per square Dissipative 100 volt 1012 > ohms per square InsulativeA NOTE ABOUT VOLTAGEIn previous years, people desiring to measure resistivity or resistance followed the ASTM D264, ASTM 991, NFPA 56A or NFPA 99 test standards. These procedures required people to test at either 500 or 1000 volts. This caused concern regarding safety to the person doing the tests. The ESDA standardized the test procedures so that lower volts could be used at specific ranges.The ACL 800 meter uses a 9 volt battery. Some meters with 9 volts batteries do not give the accuracy that you need to perform the tests especially at values higher than 107. The ACL 800 is built with a transformer that converts the 9 volt charge from the battery to 10 volts or 100 volts (whichever value is selected). The meter applies a constant charge over the complete voltage range. Accuracy is depends on applied voltage, temperature, and humidity.T EMPERATURE AND H UMIDITYThe humidity and temperature affect the electrical properties of the material being tested. The combination of low humidity and low temperature will give the highest electrical resistance results or slowest dissipation times. At high humidity a thin layer of water is condensed or absorbed on or in the material being tested. This is true of hydroscopic additives that are added to a material to increase the electrical conductivity. These additives will allow moisture to be absorbable in the materials they are added to.At elevated temperatures the mobility of free electrons is increased thereby increasing the materials conductivity. This is especially true for carbon black, metallic oxides, metals, and other materials added to a material. When the material is at a lower temperature, built in stresses occur which might increase the resistance due to increased distance between the conductive additives. Thus, humidity and temperature must be known.R ECORDING DATAANSI/ESD Association and European CECC recognize the environmental effects to test measurements and specify in their standards that they measured and recorded. It is possible to test or manufacture a material at high humidity and pass all the test specifications, but when the customer receives the material and uses it at a lower humidity or temperature the material fails to pass the specifications. This can cause rejects and loss of product.Both ESD S4.1 ESD Protective Worksurfacesection 6.2.4 and ESD S7.1‐1994 Resistive Characterization of Materials Floor Materials sections 5.2.4 and 5.3.3 require reporting of temperature and humidity at the time of testing.ANSI/EOS/ESD‐S11.11‐1993 Surface resistance measurement of Static Dissipative Planar Materials section 11.0 B states, “report the conditioning period, relative humidity, and temperature.”C ALIBRATIONCalibration is recommended annually. The ACL 800 meter comes with a NIST certificate when ordered. After one year the meters can be sent back to ACL Inc. for a new NIST certificate for a lab fee or it can be sent to a certified calibration lab (See page 11 for instructions). The meters also come with a CE mark approval.M EASURING WITH I NTERNAL E LECTRODESThe parallel resistivity probe method, complies with EOS/ESD‐S11.11. It is used to give fast electrical resistivity measurements on flat homogeneous materials. It may be used on multilayered materials, but this should be noted along with the temperature and humidity value on the data report.When the measurement is taken between the tester’s two conductive rubber rails under the tester, the tester will indicate the surface resistivity of the material being tested.A.Prior to testing, make certain that surfaces to be tested are clean and free ofcontaminants.B.Allow the meter to equilibrate to the atmosphere the meter is to be used in. It may takea half hour for the meter to adjust to new environment conditions.C.Place the meter on the desired surface to be tested.D.Move switch to desired test voltage position, either 10 or 100 volts, depending on thetarget range of the material.E.Press and hold the test button with approximately 5 pounds of applied force. Thedisplay will show the humidity and temperature. After approximately 10 seconds, themeter will display the surface resistivity in ohms per square.The meter will keep updating the display while the button is held down. The last reading will display for approximately 20 seconds after the button is released.M EASURING WITH E XTERNAL E LECTRODESWhen the measurement is taken using the 5lb external probes, the tester will indicate the resistance of the material being tested once the button is depressed (value is in ohms, though the display says ohms/sq).By utilizing these probes to the ACL 800’s sockets it is possible to measure Point to Point (RTT) Resistance, Surface to Ground (RTG), and Volume Resistance. Using these probes will allow compliancy with various standards including ANSI/ESDA S4.1 for Worksurface – Resistance Measurements, ANSI/ESDA S7.1 Resistive Characterization of Materials – Floor Materials.When auditing is finished, unplug the cables and store probes in the protective case. If cables are left in the tester, the jacks will lose their elasticity as shown below:If jacks are damaged or left in the open position, the internal probes will not engage whentesting for surface resistivity.Resistance Between Two Points (RTT)RTT measurements can be used for the evaluation of floors, chairs, carts, work surfaces and other ESD controlled materials and products. Procedures vary regarding sample preparation, probe preparation and spacing of the 5 pound probes. Select and read the correct testprocedure or standard for the desired measurement. Test procedures can be purchased from .A. Connect one end of each of the banana test leads into the sockets of the meter.Connect the other end of the test coil cords into the 5 pound probes.A. Place both probes on the material according to test procedures or standard being used.B.Press the “TEST” button and the value will be displayed on the LCD. The meter will applythe correct voltage (10v or 100v) according to the value of what is measured.C.When performing test do not touch lead wires or probe. Avoid overlapping of leadwires. This will ensure accurate readings.A N EXAMPLE OF MEASURING RTT ON DISSIPATIVE FLOORING:Taking routine measurements of tiles with dissipative floor finish will insure proper maintenance routines and will indicate any problems that may arise. Keeping a record of test results for temperature, humidity and electrical properties will provide a reference and will point toward a blueprint of traffic patterns on the floor. Good record keeping will insure success when developing and maintaining a maintenance program.To get an average measurement of a floor, map out a 4’ x 4’ section and conduct five tests (one at a time) within the square. Conduct a test for each side of the square and a final test diagonally through the center as shown in the drawing below.Each RTT test utilizes the 5 pound probes placed 3 feet apart (36 inches). Connect the test leads to the meter. Attach a 5 pound probe to the end of each lead and place 3 feet apart as indicated above. Press and hold the “TEST” button on the ACL 800 meter until a value is displayed.4’ x 4’ Section(not to scale)M EASURING R ESISTANCE TO G ROUND (RTG)Resistance to ground measurements can be used for the evaluation of floors, chairs, carts, work surfaces and other ESD controlled materials and products. Keeping a record of test results for temperature, humidity and electrical properties will provide a reference.A N EXAMPLE OF MEASURING RTG ON DISSIPATIVE FLOORING :For Testing Resistance on Floors, S7.1 requires a minimum of 5 RTG tests per 5,000 SqFt. Connect the leads for the external electrodes to the meter.Attach one lead to a 5 lb probe and place probe on the floor that’s being tested.Attach the other lead to an alligator clip and connect to a groundable point (RTGP). If using a ground adapter plug, plug the banana lead into the adaptor after the adapter is plugged into the receptacle.5 lb weight sits on the floorPush button for valuesA N EXAMPLE OF MEASURING RTG ON DISSIPATIVE T ABLE MATS:A.To test RTG for a workstation, connect the first lead to the meter and to a 5 lb probe andput probe on work surface. Connect the 2nd lead to the meter and to a groundable point (RTGP). Use the alligator clip if necessary.B.Press the “TEST” button and the value will be displayed on the LED. When performing testdo not touch lead wires or probe. Avoid overlapping of lead wires. This will ensure accurate readings.C.Resistance values are in ohms. Record temperature, humidity and resistance.If the range of your work surface is 106 to 109, measure at 100v. The EOS standard says the dissipative range is 106 – 1011 but most people look for 106 – 109 for a pass.Clip alligatorAttach the alligator clip to the lead and connect it to the ground snap or connect the banana plug to a common point ground plug:Volume Resistance Measurement M EASURING R ESISTANCE TO G ROUND (RTG)Volume Resistance measures the electrical path through a material.A. Connect one end of each of the banana test leads into the sockets of the meter.Connect the other end of the test coil cords into the 5 pound probes.B. Place sample material on a conductive metal plate (such as stainless steel). Place one ofthe 5 pound probes on the material so that the material is sandwiched between theprobe and metal plate. (see below)C. Place the second 5 pound probe on the conductive metal plate.D.Press the “TEST” button and the value will be displayed on the LED. Volume Resistanceis in ohms‐cm.ACL 800 C ALIBRATION I NSTRUCTIONSThe ACL 800 meter is calibrated to be most accurate in the most widely used range (106 ‐108). The lab calibrates meters between 30 ‐ 40% RH at 65 ‐ 73°F. If you are using the meter in atmospheres different than above, it is strongly advised to recalibrate the meter to your conditions.1. Purchase 1% 103‐1012 ohm resistors, high accuracy relative humidity hygrometer, andhigh accuracy thermometer.2. Open meter being careful not to disturb or break the two wires connecting the powerbutton to the circuit board.3. Observe on the right lower side of the meter printed circuit board three (3) calibrationpots.4. ALLOW THE METER TO EQUILIBRATE AND NORMALIZE IN THE ENVIRONMENT FOR 2HOURS BEFORE TESTING.5. Using the supplied coil cords attach alligator clips to the banana plug ends of the cords.6. Insert the 3.5mm ends into the meter jacks.7. Attach the ends of the resistors to the ends of the alligator clips.8. The top one is for humidity. The middle one is for resistivity. The bottom one is fortemperature. Adjustment is done with a small screw driver. Clockwise is to increase the value, counter clockwise to decrease the value.9. Press the power button and compare the resistor value, humidity, and temperature tothe parameter to be calibrated.10. Release the power button and slowly turn the correct adjustment pot.11. Re‐press the power button, and observe the LCD screen.12. Re‐press and adjust the pot if necessary.13. Close case and tighten the 4 screws.14. Press the power button to verify that the meter is working.***Should calibration traceable to the NIST be required, please call ACL, Inc. directly to arrange for calibration.SpecificationsAccuracy for 10‐volt scale:103 –104 +/‐ 9% @ RH<90%104 –108 +/‐ 5% @ RH<90%108 –109 +/‐ 9% @ RH<90%109 –1010 +/‐ 25% @ RH<60%Accuracy for 100‐volt scale:106 –108 +/‐ 5% @ RH<90%109 –1010 +/‐ 9% @ RH<60%1010 –1011 +/‐ 15% @ RH<50%1011 –1012 +/‐ 25% @ RH<40%The tolerances for temperature and humidity are ± 3° Fahrenheit and 3% RH up to 70% and 70°F and 5° F and 5% RH over 70°F and 70% RH.To increase the accuracy merely adjust the calibration at the use temperatures and humidities the meter will be used. For example, if you were using the meter at 70º F and 70 RH you would calibrate the meter exactly at those conditions using a 1% accuracy standard thermometer and relative humidity meter.The meter will be stable and stay accurate at those conditions.Allow the meter to equilibrate at those environment conditions. It sometimes takes ½ hour for the meter to adjust to new environment conditions.O PTIONAL A CCESSORIES:M INIATURE P ROBES WITH C ORDS•Two miniature conductive rubber external probes•One shielded BNC coaxial molded cable with gold center pin•Two female banana jacks to fit an ACL 800C meter•Made in USA•Will measure resistance of all small surfaces according to ESD S11.11•Replaceable probes•Conforms to all EOS and CE test proceduresM EASURING R ESISTANCE TO G ROUND (RTG) G ARMENT C LIPS FOR TESTING ESD S MOCKS •Measure resistance of ESD garments•Stainless steel surface areas•Test according to ESD-STM2.1-1997•Made in USA•One year warranty。