{"id":40347,"date":"2022-09-16T15:10:04","date_gmt":"2022-09-16T08:10:04","guid":{"rendered":"https:\/\/techmaster.com.vn\/?p=40347"},"modified":"2022-12-27T14:34:45","modified_gmt":"2022-12-27T07:34:45","slug":"bench-multimeter-calibration","status":"publish","type":"post","link":"https:\/\/techmaster.com.vn\/en\/bench-multimeter-calibration\/","title":{"rendered":"Bench Multimeter Calibration"},"content":{"rendered":"<p><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2022\/09\/bench-multimeter-calibration.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47713\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2022\/09\/bench-multimeter-calibration.jpg\" alt=\"Bench Multimeter Calibration\" width=\"1440\" height=\"795\" \/><\/a><\/p>\n<p><em><strong>Multimeter<\/strong><\/em> is a familiar measuring device in the field of electricity &#8211; electronics. Multimeter will provide important measurement parameters in electrical systems, electrical equipment under test, etc. Therefore, the <em>calibration of multimeters<\/em> is extremely interested by many users. Especially, bench multimeter calibration, finding a competent and reputable <em>calibrator<\/em> is very important. Due to Bench multimeter is a high-end multimeters with high accuracy product line. This device is often used for complex test requirements. Join us to learn about the Bench Multimeter Calibration.<\/p>\n<h2 style=\"text-align: justify;\"><strong>1. Introduction Multimeter<\/strong><\/h2>\n<p>Multimeter is a versatile electronic &#8211; electrical measuring device. This device can take on many different measurement functions such as amperage, voltage, capacitance, frequency, capacitance, etc. Some multimeters are also equipped with a temperature measurement feature. degree. This device is also known as multi-function meter, VOM meter, DMM. Therefore, this device will provide a comprehensive view of the status of the system, electrical equipment, &#8230; Multimeter helps the maintenance, inspection and repair of electrical equipment and systems in a convenient and fast way.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-may-do-van-nang-chinh-xac-cao-multimeter.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-25385\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-may-do-van-nang-chinh-xac-cao-multimeter.jpg\" alt=\"Hi\u1ec7u chu\u1ea9n m\u00e1y \u0111o v\u1ea1n n\u0103ng ch\u00ednh x\u00e1c cao Multimeter\" width=\"772\" height=\"346\" \/><\/a><\/p>\n<h2><strong>2. Multimeter Classification<\/strong><\/h2>\n<p>Multimeters are divided into 4 main types Analog Multimeter, Digital Multimeter (DMM), Pocket Multimeter, Bench Multimeter. Each type of multimeter will have different structural characteristics. However, the common factor is still the ability to measure the multimeter. Each multimeter design is ideal for certain test requirements. Let&#8217;s take a look at 4 types of multimeters.<\/p>\n<h3><strong>2.1 Analog Multimeter<\/strong><\/h3>\n<p>This is a basic multimeter with an extremely simple structure, displaying a needle indicator. Analog multimeter has low investment cost and measure basic parameters. The basic measurement parameters the device can measure such as ammeter, voltmeter, resistance, &#8230; However, the accuracy of this multimeter is only relative. In addition, if the needle indicator is not observed carefully, it will cause a high risk of errors. Besides, the response speed of this device is also slower than a digital multimeter. Therefore, current Analog Multimeter lines are gradually being replaced by DMM. Due to Digital Multimeter is appreciated for its convenience and accuracy.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-may-do-van-nang-co-do-chinh-xac-rat-cao.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-25397\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-may-do-van-nang-co-do-chinh-xac-rat-cao.jpg\" alt=\"Analog Multimeter\" width=\"772\" height=\"346\" \/><\/a><\/p>\n<h3><strong>2.2 Digital Multimeter<\/strong><\/h3>\n<p>This is an extremely popular electrical measuring device with many electrical professionals, engineers, and technicians. Digital Multimeter currently has a variety of models on the market. This instrument stands out for its multi-parameter measurement capabilities and high portability. Digital Multimeter depending on demand will have a design to support measurement from basic to advanced. Besides, DMM models usually have the shockproof, waterproof,&#8230; protection features. Therefore, DMM is searched and selected by many people for equipment that supports electrical measurement.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-may-do-van-nang-co-do-chinh-xac-cuc-ky-cao.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-25402\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-may-do-van-nang-co-do-chinh-xac-cuc-ky-cao.jpg\" alt=\"\u0110\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng k\u1ef9 thu\u1eadt s\u1ed1 Digital Multimeter\" width=\"772\" height=\"346\" \/><\/a><\/p>\n<h3 style=\"text-align: justify;\"><strong>2.3 Pocket Multimeter<\/strong><\/h3>\n<p>Pocket multimeters are considered an intermediate between Analog Multimeter &amp; Digital Multimeter. This is a device that overcomes the disadvantages of Analog multimeters such as fast response speed, digital display. However, the accuracy of Pocket Multimeter is not as high as DMM. The Pocket Multimeter is often used for measurement requirements with high mobility. Compact design, can fit in a pocket is a great advantage of the device. In addition, some Pocket Multimeter models use solar power to save energy.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/quy-trinh-hieu-chuan-bench-multimeter.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-25407\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/quy-trinh-hieu-chuan-bench-multimeter.jpg\" alt=\"Pocket Multimeter\" width=\"772\" height=\"346\" \/><\/a><\/p>\n<h3><strong>2.4 Bench Multimeter<\/strong><\/h3>\n<p>Bench Multimeter is a Multimeter with an extremely high level of accuracy. This instrument has more powerful measurement capabilities than standard multimeters. This instrument is commonly used for complex measurements in laboratories, in education, etc. The highlight of Bench Multimeter is that it offers many connectivity options such as LAN, USB or GPIB. This allows for complex automated testing and software control. Automated measurement by software greatly complements users who perform measurements with Bench Multimeter. The Bench Multimeters are capable of measuring with high accuracy readings up to 6 \u00bd digit.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/quy-trinh-hieu-chuan-bench-multimete-chinh-xac-cao.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-25614\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/quy-trinh-hieu-chuan-bench-multimete-chinh-xac-cao.jpg\" alt=\"Bench Multimeter m\u00e1y \u0111o v\u1ea1n n\u0103ng ch\u00ednh x\u00e1c cao\" width=\"772\" height=\"346\" \/><\/a><\/p>\n<h2 style=\"text-align: justify;\"><strong>3. <\/strong><strong>Why should we calibrate Bench Multimeter?<\/strong><\/h2>\n<p>This measuring device plays an important role in repair, inspection and quality assessment. Therefore, this device must always ensure the most stable and accurate operation. So Bench Multimeter is extremely necessary calibration. Calibration will help ensure that measurements with the Bench Multimeter always give highly reliable results. However, when you have a demand to calibrate Bench Multimeter, you need to find capable units to perform. <strong><a href=\"https:\/\/techmaster.com.vn\/en\/\"><em>Techmaster<\/em><\/a><\/strong> is a professional provider of Multimeter &#8211; Bench Multimeter calibration services. We can calibrate a wide variety of multimeters from many different brands with accuracy levels of 5 digit, 6 \u00bd digit, 7,8,&#8230;<\/p>\n<p style=\"text-align: center;\"><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/5DgSLER7Jmk\" width=\"772\" height=\"430\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" data-mce-fragment=\"1\"><span data-mce-type=\"bookmark\" style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" class=\"mce_SELRES_start\">\ufeff<\/span><\/iframe><\/p>\n<div><\/div>\n<h2><strong>4. Bench Multimeter Calibration Process<\/strong><\/h2>\n<div>We will introduce the calibration process of Bench Multimeter with two models of 5 \u00bd digit GW Instek and 6 \u00bd digit AGILENT\/KEITHLEY at Techmaster.<\/div>\n<h3><strong>4.1 S<\/strong><b>tandard and supporting device <\/b><\/h3>\n<p class=\"p2\"><span style=\"color: #000000;\">Calibrator, accuracy better than 3 times Unit Under Test (UUT). <\/span><\/p>\n<h3><strong style=\"font-size: 20.16px; color: #333333;\">4.2 <\/strong><b>Environment conditions <\/b><\/h3>\n<ul>\n<li class=\"p2\"><span class=\"s3\">Temperature<\/span><span class=\"s2\">: <\/span>(18 \u00f7 28)\u00baC<\/li>\n<li class=\"p3\"><span class=\"s3\">Relative Humidity<\/span>: (40 \u00f7 60)%RH<\/li>\n<\/ul>\n<h3><strong>4.3 <\/strong><b>Preparation <\/b><\/h3>\n<ul>\n<li class=\"p2\">Visually inspect the UUT for obvious damage that may affect accuracy and\/or operation and note any observations.<\/li>\n<li class=\"p3\">Technician must be familiar with calibration techniques and the operator manual of the UUT being calibrated.<\/li>\n<li class=\"p3\">Connect TI and test equipment to appropriate power source. POWER ON and allow warm-up as required by the manufacturer<span class=\"s2\">. <\/span><\/li>\n<\/ul>\n<h3><strong>4.4 Perform <\/strong><strong>Bench Multimeter Calibration<\/strong><\/h3>\n<p><span style=\"color: #000000;\"><strong style=\"font-size: 14.4px;\">4.4.1 <\/strong><b>DC Volts calibration <\/b><\/span><\/p>\n<ul>\n<li class=\"p2\"><span style=\"color: #000000;\">For calibration of DC Volts function, calibration points will be perform at approximately 10%, 30%, 50%, and 95% of UUT range. Other test point from 0 to 100% UUT range can be done follow customer\u2019s requirements. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Connect UUT DC VOLTS terminals to Calibrator OUTPUT terminals, observing polarity. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">UUT setting switch to DC Voltage mode. Some UUT require the test leads be changed to different jacks for range changes. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">On the Calibrator set the desired output value, then press OPR\/STBY switch to OPR and read UUT value when it is stable. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Set Calibrator OPR\/STBY switch to STBY. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Repeat the above process to test each DC Voltage range of UUT. <\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Disconnect UUT from Calibrator. <\/span><\/li>\n<\/ul>\n<p><strong>Zero offset Verification<\/strong><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-zero-offset-verification.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-25354\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-zero-offset-verification.jpg\" alt=\"Hi\u1ec7u chu\u1ea9n Bench Multimeter Zero Offset Verification\" width=\"755\" height=\"425\" \/><\/a><\/p>\n<p><strong>DC Voltage Gain Verification<\/strong><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-dc-voltage-gain-verification.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25358 aligncenter\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-dc-voltage-gain-verification.jpg\" alt=\"Hi\u1ec7u chu\u1ea9n Bench Multimeter DC Voltage Gain Verification\" width=\"755\" height=\"425\" \/><\/a><\/p>\n<h4><strong>4.4.2 <\/strong><span style=\"color: #000000;\"><b>DC Current Calibration <\/b><\/span><\/h4>\n<ul>\n<li class=\"p2\"><span style=\"color: #000000;\">For calibration of DC Current function, calibration points will be perform at approximately 10% and 95% of UUT range. Other test point from 0 to 100% UUT range can be done follow customer\u2019s requirements. <\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Connect UUT DC Current terminals to Calibrator OUTPUT terminals, observing polarity. <\/span><\/li>\n<li class=\"p2\"><i>Perform the following steps, when calibrating UUT with current values up to 20 ADC. <\/i><\/li>\n<\/ul>\n<p class=\"p3\"><span style=\"color: #000000;\">NOTE: <\/span><\/p>\n<p class=\"p3\"><span style=\"color: #000000;\">For current &gt;3 A, must change the test lead to the 20A terminal on the Calibrator. <\/span><\/p>\n<ul>\n<li class=\"p4\"><span style=\"color: #000000;\">UUT setting switch to DC Current mode and at range to be test. Some UUT require the test leads be changed to different jacks for range changes. <\/span><\/li>\n<li class=\"p4\"><span style=\"color: #000000;\">On the Calibrator set the desired output value, then press OPR\/STBY switch to OPR and read the value when it is stable. <\/span><\/li>\n<li class=\"p4\"><span style=\"color: #000000;\">Set Calibrator OPR\/STBY switch to STBY. <\/span><\/li>\n<li class=\"p4\"><span style=\"color: #000000;\">Repeat the above process to test each<\/span> DC Current range of UUT.<\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Disconnect UUT from Calibrator<span class=\"s4\">. <\/span><\/span><\/li>\n<\/ul>\n<p><strong>AC Voltage Gain Verification<\/strong><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-ac-voltage-gain-verification.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25363 alignnone\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-ac-voltage-gain-verification.jpg\" alt=\"Hi\u1ec7u chu\u1ea9n Bench Multimeter AC Voltage Gain Verification\" width=\"755\" height=\"425\" \/><\/a><\/p>\n<p><strong>DC Voltage Gain Verification<\/strong><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-dc-voltage-gain-verification-agilent.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-25367\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-dc-voltage-gain-verification-agilent.jpg\" alt=\"Hi\u1ec7u chu\u1ea9n Bench Multimeter Agilent DC Voltage Gain Verification\" width=\"755\" height=\"425\" \/><\/a><\/p>\n<h4><strong>4.4.3 <\/strong><b>AC Volts Calibration <\/b><\/h4>\n<ul>\n<li class=\"p2\"><span style=\"color: #000000;\">For calibration of AC Volts function, calibration points will be perform at approximately 10%, 30%, 50% and 95% of UUT range. Other test point from 0 to 100% UUT range can be done follow customer\u2019s requirements. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Connect UUT AC VOLTS terminals to Calibrator OUTPUT terminals. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">UUT setting switch to AC Voltage mode. Some UUT require the test leads be changed to different jacks for range changes. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">On the Calibrator set the desired output value at 45Hz, then press OPR\/STBY switch to OPR and read UUT value when it is stable. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Set Calibrator OPR\/STBY switch to STBY. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Repeat the above process to test each AC Voltage range of UUT at 400Hz. <\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Disconnect UUT from Calibrator <\/span><\/li>\n<\/ul>\n<p><strong>DC Current Gain Verification<\/strong><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-dc-current-gain-verification.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-25372\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-dc-current-gain-verification.jpg\" alt=\"Hi\u1ec7u chu\u1ea9n m\u00e1y \u0111o v\u1ea1n n\u0103ng ch\u00ednh x\u00e1c cao DC Current Gain Verification\" width=\"755\" height=\"425\" \/><\/a><\/p>\n<p><strong>AC Current Gain Verification<\/strong><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-ac-current-gain-verification.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-25376\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2021\/12\/hieu-chuan-bench-multimeter-ac-current-gain-verification.jpg\" alt=\"Hi\u1ec7u chu\u1ea9n M\u00e1y \u0111o v\u1ea1n n\u0103ng ch\u00ednh x\u00e1c cao AC Current Gain Verification\" width=\"755\" height=\"425\" \/><\/a><\/p>\n<h4><span style=\"color: #000000;\"><strong>4.4.4<\/strong> <b>AC Current Calibration<\/b><\/span><\/h4>\n<ul>\n<li class=\"p2\"><span style=\"color: #000000;\">For calibration of AC Current function, calibration points will be perform at approximately 10% and 95% of UUT range. Other test point from 0 to 100% UUT range can be done follow customer\u2019s requirements. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Perform the following steps, when calibrating UUT with current values up to 20 AAC : <\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Connect UUT AC Current terminals to Calibrator OUTPUT terminals<span class=\"s3\">. <\/span><\/span><\/li>\n<\/ul>\n<p class=\"p3\"><span style=\"color: #000000;\">NOTE: <\/span><\/p>\n<p class=\"p3\"><span style=\"color: #000000;\">For current &gt;3 A, must change the test lead to the 20A terminal on the Calibrator. <\/span><\/p>\n<ul>\n<li class=\"p4\"><span style=\"color: #000000;\">UUT setting switch to AC Current mode and at range to be test. Some UUT require the test leads be changed to different jacks for range changes. <\/span><\/li>\n<li class=\"p4\"><span style=\"color: #000000;\">On the Calibrator set the desired output value at 45Hz, then press OPR\/STBY switch to OPR and read the value when it is stable. <\/span><\/li>\n<li class=\"p4\"><span style=\"color: #000000;\">Set Calibrator OPR\/STBY switch to STBY. <\/span><\/li>\n<li class=\"p4\"><span style=\"color: #000000;\">Repeat the above process to test each AC Current range of UUT. <\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Disconnect UUT from Calibrator.<\/span><\/li>\n<\/ul>\n<h4><span style=\"color: #000000;\"><strong>4.4.5<\/strong> <b>Resistance Calibration<\/b><\/span><\/h4>\n<ul>\n<li class=\"p2\"><span style=\"color: #000000;\">For calibration of Resistance function, calibration points will be perform at approximately 10%, 30%, 50% and 95% of UUT range. Other test point from 0 to 100% UUT range can be done follow customer\u2019s requirements. <\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Connect UUT OHMS terminals to Calibrator OUTPUT terminals.<\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">UUT setting switch to Resistance mode. Some UUT require the test leads be changed to different jacks for range changes. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">On the Calibrator set the desired output value, then press OPR\/STBY switch to OPR and read the value when it is stable. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Set Calibrator OPR\/STBY switch to STBY. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Repeat the above process to test each Resistance range of UUT.<\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Disconnect UUT from Calibrator.<\/span><\/li>\n<\/ul>\n<h4><strong><span style=\"color: #000000;\">4.4.6 Capacitance Calibration<\/span><\/strong><\/h4>\n<ul>\n<li class=\"p2\"><span style=\"color: #000000;\">For calibration of Capacitance function, calibration points will be perform at approximately 90% of UUT range. Other test point from min to max UUT range can be done follow customer\u2019s requirements. <\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Connect UUT terminals to Calibrator OUTPUT terminals, observing polarity<span class=\"s3\">. <\/span><\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">UUT setting switch to Capacitance mode. <\/span><\/li>\n<\/ul>\n<p class=\"p2\"><span style=\"color: #000000;\">NOTE: <\/span><\/p>\n<p class=\"p2\"><span style=\"color: #000000;\">The output is continuously variable from 190 pF to 110 mF. <\/span><\/p>\n<p class=\"p2\"><span style=\"color: #000000;\">Specifications apply to both DC charge\/discharge capacitance meters and AC LCR meters. The maximum allowable peak voltage is 3 V. The maximum allowable peak current is 150 mA, with an RMS limitation of 30 mA below 1.1 \u03bcF and 100 mA for 1.1 \u03bcF and above. <\/span><\/p>\n<p class=\"p1\"><span style=\"color: #000000;\">The maximum lead resistance for no additional error in 2-wire COMP mode is 10 \u03a9. <\/span><\/p>\n<ul>\n<li class=\"p2\"><span style=\"color: #000000;\">On the Calibrator set the desired output value, then press OPR\/STBY switch to OPR and read the value when it is stable. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Set Calibrator OPR\/STBY switch to STBY. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Repeat the above process to test each Capacitance range of UUT. <\/span><\/li>\n<li class=\"p1\"><span style=\"color: #000000;\">Disconnect UUT from Calibrator.<\/span><\/li>\n<\/ul>\n<h4><span style=\"color: #000000;\"><strong>4.4.7<\/strong> <b>Frequency Calibration <\/b><\/span><\/h4>\n<ul>\n<li class=\"p2\"><span style=\"color: #000000;\">For calibration of Frequency function, calibration points will be perform at approximately min, 50% and max of UUT range. Other test point from min to max UUT range can be done follow customer\u2019s requirements. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Connect UUT AC VOLTS terminals to Calibrator OUTPUT terminals. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">UUT setting switch to ACV and choose Frequency Mode. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">On the Calibrator set the desired output value at 3V, then press OPR\/STBY switch to OPR and read the value when it is stable. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Set Calibrator OPR\/STBY switch to STBY. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Repeat the above process to test each point frequency of UUT. <\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Disconnect UUT from Calibrator.<\/span><\/li>\n<\/ul>\n<h4><strong><span style=\"color: #000000;\">4.4.8 Diode Calibration<\/span><\/strong><\/h4>\n<ul>\n<li class=\"p2\"><span style=\"color: #000000;\">For calibration of Diode function, calibration point will be perform at approximately 75% of UUT range. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Connect UUT DC VOLTS terminals to Calibrator OUTPUT terminals, observing polarity. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">UUT setting switch to Diode mode. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">On the Calibrator set the desired output value, then press OPR\/STBY switch to OPR and read the value when it is stable. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Set Calibrator OPR\/STBY switch to STBY. <\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Disconnect UUT from Calibrator.<\/span><\/li>\n<\/ul>\n<h4><strong><span style=\"color: #000000;\">4.4.9<\/span><\/strong> <span style=\"color: #000000;\"><strong>Temperature Calibration<\/strong><\/span><\/h4>\n<ul>\n<li class=\"p2\"><span style=\"color: #000000;\">For calibration of Temperature function, calibration points will be perform at approximately min, 50% and max of UUT range. Other test point from min to max UUT range can be done follow customer\u2019s requirements. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Connect UUT DC VOLTS terminals to Calibrator OUTPUT terminals, observing polarity. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">UUT setting switch to Temperature mode. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">On the Calibrator select the thermocouple type K and enter the desired output value, then press OPR\/STBY switch to OPR and read the value when it is stable. <\/span><\/li>\n<li class=\"p2\"><span style=\"color: #000000;\">Set Calibrator OPR\/STBY switch to STBY. <\/span><\/li>\n<li class=\"p3\"><span style=\"color: #000000;\">Disconnect UUT from the Calibrator and secure all equipment<\/span><\/li>\n<\/ul>\n<h3><strong>4.6. Tolerance<\/strong><\/h3>\n<ul>\n<li class=\"p3\"><span style=\"color: #000000;\">Customer required tolerances are to be used for all calibrations unless otherwise noted. <\/span><\/li>\n<li class=\"p4\"><span style=\"color: #000000;\">If the customer does not supply instrument tolerance then manufacturing specifications or other approved sources are to be used as the default tolerance. <\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Multimeter is a familiar measuring device in the field of electricity &#8211; electronics. Multimeter will provide important measurement parameters in electrical systems, electrical equipment under test, etc. Therefore, the calibration of multimeters is extremely interested by many users. Especially, bench multimeter calibration, finding a competent and reputable calibrator is very important. Due to Bench multimeter [&#8230;]\n","protected":false},"author":11,"featured_media":47713,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,456],"tags":[],"class_list":["post-40347","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bai-viet-moi","category-calibration-process"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v26.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Bench Multimeter Calibration - Techmaster Electronics JSC<\/title>\n<meta name=\"description\" content=\"Bench Multimeter is a Multimeter with an extremely high level of accuracy. 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