Quest Technology Co., Ltd. Shenzhen Guo Sheng 15813896487 ACL800 instructions detailed description of the impedance measurement of temperature and humidity. "Humidity and temperature will affect the impedance, so you must measure" to measure the surface impedance 103-1012 ohm / □, measure the resistance 103-1012 ohm · Relative humidity: 10% -90% RH · Temperature: 32. F-100. F (0 ℃ -37.8 ℃) · Precision - full scale Containing Electrodes: - 2 5 pounds weight, 2.5 inches RTT, RTG disk-shaped electrodes - two three inches parallel to the surface impedance test electrode · LCD digital display and rechargeable battery · measurable mat, floor coating layer, paint, wristbands, coveralls, shoes (shoe), bags and containers ACL-800 megger is based EOS / ESD, CECC, ASTM and UL test procedure designed to measure all conductive, antistatic and electrostatic discharge type surface impedance or resistance. Easy to use, high quality, high reliability, the instrument can also measure the impact of the electrical properties of relative humidity and temperature. Features: · measure impedance, temperature and humidity, in line with ESD standards, S4.1, S7.1 and S11.11 · 103-1012 ohm / □ range, can test the electrical properties of various materials. · 10 V / 100 V measurement scale, suitable for standard work surface and ground. · Plastic instrument to protect me, to prevent damage to the instrument Light weight, only 150Z (425g), easy to carry * LCD digital display, easy to use, easy reading Automatic power-off function to extend battery life · automatically returns to zero, to ensure accuracy · parallel electrodes, five pounds weight of the probe and the built-in impedance probe, are in compliance with ASTM, EOS and CECC standards · year quality warranty · Made in the USA, confidence, quality and service assurance · NIST track, ISO9000 assurance · Replaceable probe, extension Life · 9V DC or nickel-cadmium rechargeable battery or AC adapter, both common in the United States and abroad. ACL-800 megger impedance of the world's best table, set the impedance, humidity, temperature, three kinds of measuring instruments in one. √ ACL-800 megger manual measurement, first make sure the test surface is clean pollution-free. First, the surface impedance: (Surface Resistivity) 1, parallel to the probe impedance measurement method (Parallel Probe Resistivity Method) parallel to the probe impedance measurement method in accordance with EOS/ESD-S11.11-1993 standard measurement method, which is a fast measurement uniform plane resistivity values. This method is also suitable for the measurement of the multilayer material, but in the impedance measurement report must indicate the temperature and humidity conditions. A, the table on the surface of an object to be measured. B, the switch to the desired voltage position (10 volts or 100 volts) C, to about 5 pounds of pressure sustained press the measurement button, the LCD screen will display the measured surface impedance, temperature and relative humidity values, the whole measurement process is about fifteen seconds kind. · Surface impedance in ohms / □ · · photo type temperature unit relative humidity in percent in each measurement, press the measure button, ACL-800 dressing table will continuously display the measured value, release the button after about forty Within five seconds, the display is the last measured value. 2, concentric ring probe impedance measurements (Concentric Ring Probe Resistivity method) (concentric ring probe is optional) the connection plug into the table two 3.5 mm jacks, and banana plugs and concentric ring probe (optional ) linked. The probe on the surface of the object to be tested, press the button for about 15 seconds, the LCD display will show the correct temperature and relative humidity, the correct value of the surface impedance readings on the LCD screen is multiplied by 10, ohms / □. For example: LCD screen display as 3.5 × 104 ohm / □; actual impedance value of 3.5 × 105 ohm / □. Second, the surface resistance measurement (point) (Surface Resistance Measurement (RTT)) is consistent with this measurement method to measure the measurement requirements EOS/ESD-S4.1 independent grounding resistance between two points, obtained by this measurement method measurement results and the measured object processing, two 5 lbs distance between the probe and other factors, therefore, should select the proper measurement procedures required measurements at the same time under the conditions tested. A, the connection plug into the table two 3.5 mm jacks, and banana plugs with two 5-pound probe linked. B, in accordance with the measurement procedures of the two probes placed on the surface of the object under test. C, select the desired voltage (10 volts or 100 volts) D, press the switch repeatedly to display the selected voltage (10 volts or 100 volts), continue pressing the switch until the measured resistance (ohms), relative humidity and temperature display on the LCD screen. Third, the surface-to-ground resistance measurement (RTG) (Surface-To-Ground Resistance Measurement (RTG)) This measurement is used to measure the surface to another point on the surface between the ground surface resistance measuring method in accordance with EOS / ESD S4.1 measurement standards. A, the two tables were inserted into one end of the connection of the two 3.5 mm jack, and then pick which one alligator clip, another one with a 5-pound disc-shaped probe linked. B, known as the alligator clips connected to ground, in accordance with the measurement requirements of the disk-shaped probe on the surface of the object under test. C, press the measure button until the resistance (ohms), relative humidity, temperature value shown on the display, the measurement results comply with EIA, EOS / ESD, ANSI, IEC-93, CECC, ASTM measurement standards, for high impedance material The measurement precision measurements to ensure the measured results, the need to be careful not to overlap the two leads, do not touch the probe leads and the measured object. ACL-800 megohms surface impedance meter calibration step 1, the range is from 103 to 1012 with an accuracy of 1% of the impedance bridge. Precision relative humidity table (Relative Humidity Hygrometer) precision thermometer (High accuracy Thermometer) 2, open the cover, be careful to refrain from injury on the board two wires connected to the power switch. 3, the board found the bottom right three tuning regulator (Calibration Pots) 4, so that the table in this environmental conditions at least 1/2 hour, to obtain self-balancing begin only after the test. 5, the use of ACL-800 meter cable that comes with alligator clip on one end connected to the other end of the banana plug. 6, the 3.5 mm long plug socket table. 7, with alligator clips to connect across the resistor. 8, three tuning regulator, the top is "moisture" Measurement, intermediate for the "impedance", the bottom of the "temperature with a small screwdriver." Clockwise to increase the value of the adjustment counterclockwise to reduce the value of the adjustment. 9, press the power switch, while comparing the "temperature", "humidity" and "resistance" value. 10, the release of the power switch, and slowly adjust the corresponding correction regulator. 11, once again press the power switch and watch the LCD display. 12, for Recalibrate can then press the power switch and adjust corrector. 13, covered with the cover and tighten the four screws. 14, press the power switch to determine whether the table is working properly. ACL-800 megger (Impedance - temperature - humidity test table) answers a question, why the temperature and humidity measurements are important? Since temperature and humidity will directly affect the electrical characteristics of the measured object. At low temperature and humidity conditions, significantly increased the resistance of the object, the electrostatic discharge is slow, time increases in high humidity conditions, the surface condensation or adsorption of a thin layer of water film. This moisture enhances conductivity of the material, for a material that can absorb water vapor especially. As the temperature increases, the mobility of free charge increases, thus enhancing the conductivity of the material, particularly those added carbon black, metal oxides, metal or other conductive material it. The time when the temperature is low, the material will generate stress, the distance between one of the conductive additive increases, thereby increasing its resistance. Therefore, we must understand the humidity and temperature. Under conditions of high humidity testing a material, it may all be measured through indicators, but when the user purchased the material and low humidity or temperature is used, it may fail to meet requirements, thus resulting in a waste and loss. Must measure and record the temperature / humidity Another reason is ANSI / ESD Association and the European CECC admits ambient temperature / humidity, and in their formulation of the standard requirements must be measured and recorded the data. For example: In ESD DS4.1 ESD protective work surface, 6.2.4 and ESD S7.1-1994 material impedance parameters, surface materials in Section 5.2.4 and 5.3.3 are required, "while reporting the test temperature and relative humidity. " ANSI/EOS/ESD-S11.11-1993 electrostatic discharge plane material surface impedance measurement section 11.0. B. "reporting regulation cycle, relative humidity and temperature." Must measure and record the data to avoid errors, the manufacturer , dealers and sales staff and users must understand the ambient humidity and temperature parameters, in order to avoid rejection of a number of special materials or retirement. 2, why or under what circumstances to respectively 10 V and 100 V under the conditions measured simultaneously? In the past, people want to measure impedance, must follow the ASTM D264, ASTM 991A or NFPA 56A or 99 and so marked. In the course of these measurements requires measuring the voltage at 500 or 1000 volts, for the safety of laboratory personnel have a certain impact, so people want to use a smaller, economical measuring instrument at 9 volts measured. However, 9 volts, the impedance value is greater than 107 ohms difficult to ensure accuracy, the results obtained are not accurate. Finally ESD Association standardized measurement process. Standard procedure provides: an impedance value is greater than 106 ohms / □ must be a stable voltage of 100 volts measured impedance value is less than 106 ohms / □ 10 V must be used when measuring. This provision in the ANSI / EOS / ESD Standard DS4.1, S7.1 and S11.11 is explained. 3, why digital display is superior to analog display or light emitting two-phase pipe (LED) display? Analog display is difficult to read, LED display is difficult to determine the order of magnitude. 4, the instrument can use rechargeable batteries? Can. 5, there is no external probe, you can use this instrument? Yes, the instrument built-in or parallel to the bottom of the probe, the measured value is in ohm / □. Quick measurement of surface resistance, in full compliance with ASTM D-257 test method, and requires about 5 pounds of pressure. 6, when the button is released, the reading is still being displayed, it will consume battery do? Will not. 7, the instrument is in the United States, the United Kingdom or the Far East made? The American-made instrument, reliable quality assurance, delivery fast. 8, if the continuous measurement, it must return to zero? No, the meter automatically returns to zero. 9, what is the RTT, RTG, the relationship between the impedance? RTT is the resistance between two points, RTG is a bit of resistance on the ground, the resistance is to determine whether the use of the product in the best way effective. 10, when the battery power is low, you can use this instrument? Yes. If the battery is running low instrument displays "low battery". But even in this case, the instrument will give accurate readings. When the battery is too low to guarantee a stable 100 volts output, the instrument is completely no longer working. At this point, the battery still with a certain amount of power, can be used to power other less demanding equipment. 11, if the test of a high-resistance material, the measured voltage will be less than 100 volts it? No, in the whole of the instrument transformer impedance will remain stable in the range 100 volts. 10 volts in the same test. 12, if the parallel electrodes is broken, you can change it? Can. 13, the instrument can be used at 220 volts do? Yes, with tables provide 120-volt interface. If used at 220 volts is required to buy a 12 volt DC / 220 volt AC adapter. 14, if the meter is broken, you can fix it? If it is not due to improper use or failure caused by fall touch, one-year warranty. 15, when the instrument from a cold place into a warm place, the temperature change is large, must be allowed to adapt to environmental conditions such as half an hour. Therefore, after half an hour to work properly. 16, the scope of the instrument what? The instrument can be used to include engineering and manufacturing, protection, quality control, incoming inspection, research, and sales and other aspects of the test material on any plane. 17, the instrument can be used in which industries? Film, medicine, clean room, electronic automation, pharmaceutical, research, and coatings. 18, the use of the instrument can test what material? Any electrostatic discharge material, including resistance greater than 1000 ohms per conductor material. Such as floor mats, table mats, anti-static floor tiles, surface coatings, floor coatings, bags, containers, clothes, shoes, foot ring, wrist strap, grounding lines. 19 The instrument complies with the criteria? The instrument meets the following criteria: EOS/ESD-S4.1, S11.11, S7.1, NFPA-99A, UL, ASTM-D-257, ASTM-F150, military standard, EIA-541 and CECC (Europe). 20, what measures should be taken to ensure measurement accuracy, especially when measuring high resistance (1012 ohms) materials? Measurement of high resistance material, do not touch the connection or external electrodes, do not let the connection touch each other.