ACL-800 Digital heavy hammer surface resistance tester

Temperature and humidity measuring impedance. "Humidity and temperature can affect the impedance, it is necessary to measure the" surface resistivity measured 103-1012 ohm / □, measured 103-1012 ohm resistor RH:? 10% -90% RH temperature:? 32. F-100. ?? F (0 ℃ -37.8 ℃) with high accuracy - the whole range including the electrode: - two five pounds weight, 2.5 inches RTT, RTG disk-shaped electrodes - two 3 inches parallel surface impedance test electrode LCD digital? show? rechargeable battery? measurable mat, floor paint layer, paint, wristbands, coveralls, footwear (shoes), bags and containers megameter ACL-800 is based on EOS / ESD, CECC, ASTM and UL test procedures designed for measuring the impedance or resistance of all conductive type, antistatic and electrostatic discharge type of surface. Easy to use, high quality, high reliability, the instrument can measure relative humidity and temperature affect the electrical properties. Features:?? Impedance measurements, temperature and humidity, in line with ESD standard, 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 the 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 to read? Auto power-off function to extend the battery life? Automatic zeroing, ensure the accuracy ? parallel electrodes 5 pound probe and built-impedance probe, are in line with ASTM, EOS and CECC standards? One year quality warranty? assurance American manufacturing, confidence, quality and service? NIST track, ISO9000 guarantee? replaceable probe, extension life? 9V DC or nickel-cadmium rechargeable battery or AC adapter, are common in the United States and overseas. ACL-800 megameter world's best impedance meters, set impedance, humidity, temperature, three measurements in one instrument. √ performance ACL-800 3M701 Pinion127-254 Monrve262A-1 103-1012Ω scale √ (105-1011Ω) * (104-1012Ω) √ √ * * * humidity readings temperature readings √ * * * 10v / 10ov √ √ * * (100v ) 5 pounds a 2.5 inch disk-shaped probe √ √ * √ √ √ √ √ Made in the USA measuring RTT, RTG √ √ * (only RTG) * (Only RTG) to measure the surface impedance √ * √ √ Built-impedance probe √ * √ √ digital LCD Reading √ * (analog display) * (Light Emitting Diode) * (light emitting diode) winding jack √ * * * foam plastic instrument protection box √ √ * √ NIST standard √ √ * √ 9V standard battery √ * (22.5 V Special voltage) * (6 V special voltage) * (12 volts) before the ACL-800 ZhaoOuBiao Operating Manual measurements, first make sure to be tested on a clean surface. First, the surface impedance: (Surface Resistivity) 1, a parallel impedance measurement probe (Parallel Probe Resistivity Method) parallel probe impedance measurement is consistent with EOS / ESD-S11.11-1993 standard measurement method, which is a fast measurement Methods plane homogeneous material resistance value. This method is also suitable for measuring the layers of material, but in the impedance value report must indicate the temperature and humidity measurements. A, the table on the surface to be measured. B, and switch to the desired voltage position (10 volts or 100 volts) C, about 5 pounds of pressure to keep pressing the measurement button, LCD monitor will display the surface impedance measurements, temperature and relative humidity value at that time, the entire measurement process is about fifteen seconds species. After? Surface impedance in ohms / □? Temperature scale photo type? Relative humidity in percent in each measure, press the measure button, ACL-800 meter continuous measurements show trim, 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) to connect two 3.5 mm jack plug into the table and banana plugs and concentric ring probe (optional ) linked. After the probe on the surface of the object to be tested, and press the button for about 15 seconds, the LCD display will show the correct temperature and relative humidity readings right on the LCD surface impedance is multiplied by 10, ohms / □. For example: Display of 3.5 × 104 ohm / □ on the LCD screen; the actual impedance value of 3.5 × 105 ohm / □. Second, the surface resistance measurement (Point to Point) (Surface Resistance Measurement (RTT)) This measurement method is in line with EOS / ESD-S4.1 measurement requirements to measure independent of the ground between two points of resistance, obtained by this measurement method processing of the measurement results and the object, the distance between two 5-pound probe and other factors, therefore, should select the correct measurement procedure, each under the same measurement conditions required for testing. A, the connection plug into the table of two 3.5 mm jack and banana plugs and two 5-pound probe linked. B, in accordance with the measurement procedures two probes placed on the surface to be measured. C, select the desired voltage (10 volts or 100 volts) D, press the switch until the selected voltage (10 volts or 100 volts), continue pressing the switch until the measured resistance (in 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 method is used to measure the surface resistance of the surface to another point between the upper surface of the ground, measuring methods in line with EOS / ESD S4.1 measure. A, the two wires are inserted into one end of two 3.5 mm jack table, and then pick one of the alligator clips, the other one with a 5-pound disc-shaped probe linked. B, and the alligator clips connected to known ground, in accordance with the requirements of the disc-shaped measuring probe on the surface to be measured. C, press the measure button until the resistance (in ohms), relative humidity, temperature value is displayed on the display, the measurement results in line with EIA, EOS / ESD, ANSI, IEC-93, CECC, ASTM measurement standards, for high impedance material When measured in order to ensure high-precision measurement results measured, so that the two leads need to be careful not to overlap, do not touch the probe, the lead and the object. ACL-800 megohms calibration step surface impedance table 1, in the range of 103-1012 with an accuracy of 1% of the impedance bridge. Relative humidity table precision (Relative Humidity Hygrometer) precision thermometer (High accuracy Thermometer) 2, open the cover, careful to refrain from the two wires damage the circuit board power switch. 3, find the bottom right of the board three tuning regulator (Calibration Pots) 4, so that the table at the environmental conditions at least 1/2 hour to achieve self-balancing only after starting the test. 5, using the ACL-800 Table Connect one end of the cable that comes with alligator clips on the other end of the banana plug. 6, 3.5 mm long plug into the socket table. 7, with alligator clips to connect across the resistor. 8, three tuning regulator, the top is "humidity" measure, in the middle of the "Resistance", the bottom of the "temperature with a small screwdriver to adjust." Clockwise to increase the value adjustment counterclockwise to reduce the value adjustment. 9, press the power switch, while more "temperature", "humidity" and "resistance" value. 10, release the power switch, and slowly adjust the corresponding correction regulator. 11, press the power switch again, observe LCD display. 12, if re-calibration, and then press the power switch and regulator corrector. 13, covered with the cover on and tighten the four retaining screws. 14, press the power switch to determine whether the table is working properly. ACL-800 megameter (impedance - temperature - humidity test chart) Questions 1. Why measure the temperature and humidity is very important? Since the temperature and humidity will directly affect the electrical properties of the measured object. At low temperature and humidity conditions, the resistance will be the object of significantly increased, the electrostatic discharge is slow, time is increased under high humidity conditions, surface condensation or adsorption of a thin layer of water film. This enhances the conductivity of the absorbent material, for materials that can absorb water vapor especially. As the temperature increases, the mobility of free electrons is increased, thus enhancing the conductivity of the material, especially material that adds carbon black, a metal oxide, a metal or other conductive material. When the lower temperature when the internal stress generated material, wherein the distance between the conductive additive increases, thereby increasing its resistance. Therefore, we must understand the humidity and temperature. Test under high humidity conditions of a material, it may be measured by all indicators, but when the user purchased the material, and at low humidity or temperatures, it may fail to meet requirements, thus causing waste and loss. Another reason must measure and record the temperature / humidity is ANSI / ESD Association and the European CECC also acknowledged the ambient temperature / humidity and asked them to develop a standard that must be measured and recorded data. For example: In the 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 require temperature "At the same time, and report test relative humidity. " ANSI / EOS / ESD-S11.11-1993 ESD flat material surface impedance measurements - 11.0 .B. "Reports adjustment period, relative humidity and temperature." Must measure and record the data in order to avoid errors, Manufacturers , dealers and sales personnel and users must understand the environmental humidity and temperature parameters, in order to avoid rejection of a number of special materials or scrap. 2, why, or under what circumstances to separate simultaneous measurements at 10 volts and 100 volts condition? In the past, people have to measure impedance must be in accordance with ASTM D264, ASTM 991A or equivalent standard NFPA 56A or 99. Requires measuring the voltage during these measurements at 500 or 1000 volts, have a certain impact on the safety of laboratory personnel, so people want to use a smaller, economical measurement instrument at 9 volts measured. However, at 9 volts, when the impedance value is greater than 107 ohms is difficult to ensure accuracy, the results obtained are not accurate. Last ESD Association standardized measurement process. Standard procedure specified: when the impedance value is greater than 106 ohms / □, must be stable under measurement 100 volts, the resistance value of less than 106 ohms / □ must be 10 volts when measurements. This provision in the ANSI / EOS / ESD standards DS4.1, S7.1 and S11.11 are explained. 3. Why is superior to analog display or a digital display with light-emitting tube (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 the Indicator? Yes, at the bottom of the instrument has built-in or parallel probe, the measured values ??in ohms / □. It can quickly measure the surface impedance, in full compliance with ASTM D-257 test method, and requires about 5 pounds of pressure. 6, when the button is released, the reading still showed that consume batteries? Will not. 7, the instrument is in the United States, Britain or the Far East made? The American-made instrument, reliable quality assurance, shipping quickly. 8, if the continuous measurements, you must return to zero? No, the meter automatically returns to zero. 9. What is the RTT, RTG, and impedance What is the relationship? RTT is the resistance between two points, RTG is a little on the ground of resistance, which is to determine whether the actual use of the product in the best and effective way. 10, when the battery is low, you can use this instrument? Yes it is. If the battery is low instrument displays "low battery". But even in this case, the meter will give accurate readings. When the battery is too low to guarantee a stable 100 volts output, the meter is completely stopped working. At this point, the battery still use some power, it can be used to power other equipment less demanding. 11. If the test of a high resistance material, measure voltage less than 100 volts it? No, the instrument transformers in the whole range of impedance will remain stable 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 it? Yes, with the table provides 120-volt interfaces. As used in the 220 volts shall 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 malfunction caused by the fall touch, one-year warranty. 15, when the meter from a cold place to a warm place, the temperature change is large, have to wait half an hour allowed to adapt to environmental conditions. Thus, after half an hour to work properly. 16, the scope of the instrument have? The instrument can be used to include test engineering and manufacturing, protection, quality control, incoming inspection, research and marketing and other aspects of any flat material. 17, the instrument can be used in what industry? Film, medical, clean room, electronic automation, pharmaceuticals, research and paint. 18, use of the instrument can test what kind of material? Any electrostatic discharge material, conductor material comprises greater than 1000 ohm resistor can be. 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 in line with what 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 accurate measurement, especially when measuring high resistance (1012 ohms) material? When measuring high resistance materials, do not touch the wires or external electrodes, do not let the wires touch each other.