Hulunbeier Battery Internal Resistance Tester - Testing Unit
AC current measurement 1mA ～ 200mA10Hz ～ 5kHzUrel=02%, DC resistance measurement 001 Ω ～ 100k Ω Urel=01%, frequency measurement Hz ～ 500kHz Urel=02%, DC voltage output 001 ～ 100) VUrel=01%.
The laboratory mutual recognition organization (ILAC-MRA), which has passed 691 CNAS projects and ISO17025 measurement criteria, is a third-party impartial laboratory engaged in instrument calibration, instrument calibration, instrument testing, instrument measurement, instrument external calibration, third-party certification agencies and instrument sales AS certification and training. The company adheres to the concept and policy of "science, justice, accuracy,". The company's business is mainly distributed in the Pearl River Delta region: Dongguan, Shenzhen, Huizhou, Guangzhou, Zhongshan, Foshan, Zhuhai, Jiangmen, Heyuan, Zhaoqing, Qingyuan and other major cities. The calibration and testing center of the company has metrological calibration laboratories for mechanics, length, geometry, weighing instrument, electromagnetics and radio room, thermal engineering, etc. The calibration center can calibrate instruments of various countries in the above categories and issue recognized legal calibration reports. The calibration/testing reports are characterized by quality, reliability, fairness, and comply with ISO review and customer inspection. HZSTYQJC
Quanzhou third-party metering calibration
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PTC effect is a kind of material with PTC (Positive temperature coefficient) effect, which only means that the resistance of this material will increase with the increase of temperature. For example, most metal materials have PTC effect. In these materials, the PTC effect shows that the resistance increases linearly with temperature, which is commonly referred to as the linear PTC effect. Nonlinear PTC effect Materials undergoing phase change will show a phenomenon that the resistance increases rapidly by several to ten orders of magnitude along a narrow temperature range, that is, nonlinear PTC effect. Quite a few types of conductive polymerization will show this effect, such as polymer PTC thermistors. These conductive polymers are very useful for making over-current protection devices.
Quanzhou third-party metering calibration
At the beginning of 2013, WorldCom Instrument Calibration, Detection, Metrology and Calibration Technology improved the score value of some behaviors, and then the price of commission points rose from 100 yuan to 150 yuan, and the agents borrowed the new rules to earn money. It is understood that most of the driving books in the hands of these agents are from people who don't drive at ordinary times. There is no limit to how many cars can be sold with one driving book. As long as 11 points are scored in one scoring cycle, these drivers can continue to score back this year.
Quanzhou third-party metering calibration
Polymer PTC thermistors are used for overcurrent protection. Polymer PTC thermistors are also often referred to as self restoring wires (hereinafter referred to as thermistors). Because of their special positive temperature coefficient resistance characteristics, they are extremely suitable for use as overcurrent protection devices. Thermistors are used in series in circuits like ordinary wires. Thermistors can also be used as electronic circuit components for instrument circuit temperature compensation and thermocouple cold junction temperature compensation. Using the self heating characteristics of NTC thermistors, automatic gain control can be realized, and RC oscillator amplitude stabilizing circuit, delay circuit and protection circuit can be formed.
Quanzhou third-party metering calibration
Shitong Testing Thermal Laboratory is mainly responsible for the measurement of temperature, humidity and environmental tests; The thermal laboratory is one of the early rooms of the company, equipped with standard temperature equipment, such as FLUKE precision process calibrator, thermocouple calibration furnace, precision multi-channel temperature and humidity patrol detector, high stability constant temperature and humidity calibration box, calibration level constant temperature bath, self calibration platinum thermometer, thermal radiation source, etc; Due to the long-term field experiment and calibration of environmental test equipment, the technicians in this laboratory have rich experience in equipment commissioning.
The types of instruments and equipment that can provide instrument calibration, instrument calibration, instrument measurement and maintenance services include:
Temperature instrument:
Standard mercury thermometer, liquid glass thermometer, infrared radiation thermometer, bimetal thermometer, electric contact thermometer, pressure thermometer, surface thermometer, semiconductor point thermometer, second-class platinum rhodium 10 platinum thermocouple, various working thermocouples, industrial platinum copper thermal resistance, standard constant temperature bath, tube calibration furnace, dry parallel calibration furnace, temperature calibrator Surface temperature source, various digital thermometers, digital thermometer, data collector, temperature patrol detector, soldering iron thermometer, temperature sensor, temperature transmitter, temperature indication regulator, temperature indication controller, online temperature instruments, temperature parameters of various integrated instruments, etc.
Environmental test equipment:
Constant temperature oven, constant temperature and humidity oven (room), various incubators, drying oven, curing oven (room), oven, refrigerator, aging oven (room), quick boiling oven, salt spray test chamber, alternating test chamber, high and low temperature impact testing machine, climate (environment) testing machine, damp heat testing machine, apparatus, water bath equipment, disintegrator, digestion apparatus, digestion furnace, resistance (muffle) furnace, heat treatment furnace Glow wire tester, combustion tester, temperature tunnel, reflow (wave crest) welder, heating tank, injection molding machine, etc.
Humidity meter:
Various hygrometers, temperature and humidity sensors, psychrometers, humidity transmitters, humidity recorders, humidity generators, wood moisture meters, paper moisture meters, etc.
