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<title><![CDATA[EC21 Product Catalogs - principles]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/principles--2717/1/principles.html]]></link><item>
<title><![CDATA[WDLYCH 0-5 0-10 Megaohm Resistance Meter AC DC Insulation Monitor for Marine Electrical Net On Ship]]></title><link><![CDATA[https://jade900920.en.ec21.com/WDLYCH_0_5_0_10--11663243_12033933.html]]></link><description><![CDATA[principle of &quot;Pursuing precision and superiority, unifying ideas and deeds&quot;, the company ceaselessly explores and innovates to satisfy customer requirements. The reliable quality and excellent after-]]></description><pubDate><![CDATA[20241231]]></pubDate></item>
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<title><![CDATA[Bebur BT6308 Ozone Analyzer for Drink Water Wastewater Industrial Process Water]]></title><link><![CDATA[https://bebur.en.ec21.com/Bebur_BT6308_Ozone_Analyzer_for--12032929_12032934.html]]></link><description><![CDATA[principle of membrane amperometric sensor
▪ Stable performance and accurate measurement
▪ No reagents and buffers required
▪ Not affected by water cleaners
▪ Zero calibration is not required
]]></description><pubDate><![CDATA[20241224]]></pubDate></item>
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<title><![CDATA[Laser Distance Measurer]]></title><link><![CDATA[https://holo1.en.ec21.com/Laser_Distance_Measurer--11942959_11942962.html]]></link><description><![CDATA[distance.
Operating Principles:
Distance is calculated using the speed of light and the time it takes
for the laser pulse to return. The device converts this into a readable
distance measurement.
]]></description><pubDate><![CDATA[20241206]]></pubDate></item>
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<title><![CDATA[Smoke Alarm Production Test Tunnel]]></title><link><![CDATA[https://mimayijingaile0.en.ec21.com/Smoke_Alarm_Production_Test_Tunnel--11987076_11987127.html]]></link><description><![CDATA[Equipment
Function ： 
The smoke alarm production test tunnel
was designed for batch test or calibration of sensitivity test of Smoke alarms
or detectors. The basic work principle is compliance to E]]></description><pubDate><![CDATA[20241019]]></pubDate></item>
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<title><![CDATA[UTOCO Handheld Laser Methane Detector Natural Gas Pipe Line Monitoring]]></title><link><![CDATA[https://utoco.en.ec21.com/UTOCO_Handheld_Laser_Methane_Detector--12010082_12010083.html]]></link><description><![CDATA[Principle
laser absorption spectrum
Detection laser power
≤15mW
Detection of laser safety
Class I laser, safe for human eyes
Detection distance
(0-30) m
Detection range
(0 to 50000) ppm-m
Detection]]></description><pubDate><![CDATA[20240926]]></pubDate></item>
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<title><![CDATA[Impact Specimen Low Temperature Champer/Temperature Meter/Temperature Tank]]></title><link><![CDATA[https://lgtester4.en.ec21.com/Impact_Specimen_Low_Temperature_Champer--9978752_10060562.html]]></link><description><![CDATA[principle of heat balance and loop mixing method to achieve automatic uniform cooling and constant temperature for samples. The refrigeration mode of ultra-low temperature equipment adopts mainly liq]]></description><pubDate><![CDATA[20240803]]></pubDate></item>
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<title><![CDATA[40m 20HZ 1mm Accuracy COM RXTX Serial Port TTL Digital Output Raspberry Pi Laser Distance Sensor]]></title><link><![CDATA[https://lasersensor2003.en.ec21.com/40m_20HZ_1mm_Accuracy_COM--11950652_11976847.html]]></link><description><![CDATA[principle, offering non-contact continuous level detection, with 40m detection range and millimeter-level detection accuracy.
Meskernel provides high frequency ranging Sensor module,including but not]]></description><pubDate><![CDATA[20240729]]></pubDate></item>
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<title><![CDATA[Cuvettes&amp;Cuvettes(Glass)&amp;Cuvettes (Quartz)]]></title><link><![CDATA[https://biogene123.en.ec21.com/Cuvettes_Cuvettes_Glass_Cuvettes_Quartz--11963552_11963584.html]]></link><description><![CDATA[principle of selecting the cupola washing liquid is that the decontamination effect is good, does not damage the cupola, and does not affect the measurement.
The chromic acid lotion commonly used in ]]></description><pubDate><![CDATA[20240705]]></pubDate></item>
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<title><![CDATA[Hot Rolled Bar Outer Diameter Measuring Instrument GDC-J2400-JX]]></title><link><![CDATA[https://measurementon.en.ec21.com/Hot_Rolled_Bar_Outer_Diameter--11962128_11962129.html]]></link><description><![CDATA[principle: laser scanning method;
Measurement method: rotary measurement;
Measurement frequency: 800-1600;
Rotation speed: 30 rpm;
Installation method: fixed or mobile
The entire set of equipment com]]></description><pubDate><![CDATA[20240703]]></pubDate></item>
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<title><![CDATA[ST-6600 Plug Skin High Voltage Tester]]></title><link><![CDATA[https://satatec.en.ec21.com/ST_6600_Plug_Skin_High--7687564_7687872.html]]></link><description><![CDATA[ST-6600 Plug Skin High Voltage Tester 
Used range: Applied to detect the conductor of power cord plug whether exposed 
Principle: Principle of using high-frequency and high-voltage spark discharge te]]></description><pubDate><![CDATA[20240614]]></pubDate></item>
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<title><![CDATA[RLK607 Contact Infrared Radiometer]]></title><link><![CDATA[https://gatherstar.en.ec21.com/RLK607_Contact_Infrared_Radiometer--11943208_11943310.html]]></link><description><![CDATA[Principle 
Receive infrared radiation from material surface
Measure band 
2～30μm
Measuring range 
100μW/cm*cm～100mW/cm*cm (automatic range switching)
Display resolution 
±1.0μW
Surface temper]]></description><pubDate><![CDATA[20240530]]></pubDate></item>
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<title><![CDATA[IEC 60068-2-75 IEC 62196 Electric Vehicle IK01-IK10 Pendulum Impact Hammer Testing Apparatus]]></title><link><![CDATA[https://pegoelectronics.en.ec21.com/IEC_60068_2_75_IEC--11940571_11940595.html]]></link><description><![CDATA[principle is : the sample is placed in normal, then adjust the impact points, and position the impact device, then release the hammer to freely impact the hammer. T
he impact angle and impact height ]]></description><pubDate><![CDATA[20240522]]></pubDate></item>
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<title><![CDATA[Smart Electricity Distribution Network Monitoring System]]></title><link><![CDATA[https://snova17.en.ec21.com/Smart_Electricity_Distribution_Network_Monitoring--10349843_10370312.html]]></link><description><![CDATA[principle
Short circuit detection principle: According to the phenomenon of short circuit,the current break when
short circuit happen, the action on the basis of the protection movement power outages]]></description><pubDate><![CDATA[20240520]]></pubDate></item>
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<title><![CDATA[poland Zetkama Front Valve Fig.201 201a015c00]]></title><link><![CDATA[https://baisheng326.en.ec21.com/poland_Zetkama_Front_Valve_Fig.201--11922748_11926574.html]]></link><description><![CDATA[principle of
integrity and trustworthiness, and strives to win the trust of customers with
credibility. Main business scope: ZETKAMA valves (agent) from Poland, SIEMENS
positioners and analyzers from]]></description><pubDate><![CDATA[20240418]]></pubDate></item>
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<title><![CDATA[Piston Type Circulating Real Gas Flow Standard Device]]></title><link><![CDATA[https://tnmacalibration.en.ec21.com/Piston_Type_Circulating_Real_Gas--11926262_11926269.html]]></link><description><![CDATA[principle of conservation of mass, which uses standard gas to compare air to explore thermal and ultrasonic gas. Represents a new method of value error testing. Research on air calibration and actual]]></description><pubDate><![CDATA[20240417]]></pubDate></item>
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<title><![CDATA[Cupping Testing Machine]]></title><link><![CDATA[https://lgcs201088.en.ec21.com/Cupping_Testing_Machine--6650866_6650981.html]]></link><description><![CDATA[principle, can achieve constant control of speed rate. (In the past, the energy of fuel tank can not achieve constant control of speed rate, hydraulic sensor’s precision and accuracy performance is]]></description><pubDate><![CDATA[20211028]]></pubDate></item>
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<title><![CDATA[Automatic Image Measuring Device]]></title><link><![CDATA[https://qiantongyiqi.en.ec21.com/Automatic_Image_Measuring_Device--11683816_11853605.html]]></link><description><![CDATA[Product DescriptionImager characteristics:
Using optical principle, non-contact test measurement;
Automatic Image Measuring Device is applicable to all fields for the purpose of two coordinate measur]]></description><pubDate><![CDATA[20231012]]></pubDate></item>
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<title><![CDATA[Gas Pycnometer Analyzer G-DenPyc 2900]]></title><link><![CDATA[https://goldapp.en.ec21.com/Gas_Pycnometer_Analyzer_G_DenPyc--9431275_9269540.html]]></link><description><![CDATA[principle
Versatility: true (also terms as real, absolute, apparent or skeletal) density analysis, rigid foam materials’ percentage of open/closed spaces analysis
Experimental Pressure: external va]]></description><pubDate><![CDATA[20240118]]></pubDate></item>
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<title><![CDATA[Burst Tester]]></title><link><![CDATA[https://pnshar.en.ec21.com/Burst_Tester--6815878_6805020.html]]></link><description><![CDATA[principle of modern mechanical design concept and design criterion of human-machine engineering. PN-BSM600 Bursting Strength Tester belongs to electromechanical product which is with novel design, co]]></description><pubDate><![CDATA[20120619]]></pubDate></item>
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<title><![CDATA[Quick Thermal Conductivity Meter QTM-700/QTM-710]]></title><link><![CDATA[https://kyotokem.en.ec21.com/Quick_Thermal_Conductivity_Meter_QTM--8755030_8755121.html]]></link><description><![CDATA[principle of Hot Wire Method. Measurements of thermal conductivity of firebricks or heat insulation materials at high and low temperature are possible.Vessel for powderVessel for powderThe measuremen]]></description><pubDate><![CDATA[20190329]]></pubDate></item>
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<title><![CDATA[ETG12N1 Eddy Current Digital Paint Thickness Gauge]]></title><link><![CDATA[https://mikrometry.en.ec21.com/ETG12N1_Eddy_Current_Digital_Paint--11395794_11403080.html]]></link><description><![CDATA[principle and should be used for detecting the insulating coating&apos;s thickness such as paint/anodizing/ceramics on the aluminum/copper/brass substrate.
Feature of ETG12N Eddy Current Digital Paint Thi]]></description><pubDate><![CDATA[20210621]]></pubDate></item>
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<title><![CDATA[KRD13 High Energy Shock Test System]]></title><link><![CDATA[https://cmetechnology.en.ec21.com/KRD13_High_Energy_Shock_Test--11706077_11837073.html]]></link><description><![CDATA[principle of expansion, by adjusting the internal pressure; make it in a short stroke to release high-impact energy. This novel designed high-energy shock test system is easy to operate and used to t]]></description><pubDate><![CDATA[20230823]]></pubDate></item>
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<title><![CDATA[Hot Sale Surface Roughness Tester SRT-6200]]></title><link><![CDATA[https://105landtek.en.ec21.com/Hot_Sale_Surface_Roughness_Tester--9545708_11803265.html]]></link><description><![CDATA[Principle
Inductance type
Radius of Probe Pin
10 um
Material of Probe Pin
Diamond
Measurement Force of Probe
16 mN（1.6 gf）
Probe Angle
90°
Vertical Radius of Guiding Head
48 mm
Maximum driving s]]></description><pubDate><![CDATA[20230607]]></pubDate></item>
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<title><![CDATA[LM-79 Moving Detector Type C Goniophotometer]]></title><link><![CDATA[https://15317383997.en.ec21.com/LM_79_Moving_Detector_Type--11812738_11812739.html]]></link><description><![CDATA[principles are according to IESNA and CIE. The LSG-6000 completely meet the LM-80, LM-79, LM-75, GB, EN and CIE121-1996 standards.• Special collimation device with cross laser line help you install]]></description><pubDate><![CDATA[20231024]]></pubDate></item>
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<title><![CDATA[Custom Breaking Strength Tester for Glass Ampoule Bottle]]></title><link><![CDATA[https://celtec.en.ec21.com/Custom_Breaking_Strength_Tester_for--9267551_9267648.html]]></link><description><![CDATA[Principle
An ampoule sample is place on the fixtures and the pressing head is driven down by the power system at the speed of 10 mm/m. The breaking strength is detected by the high precision load cel]]></description><pubDate><![CDATA[20240325]]></pubDate></item>
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<title><![CDATA[Moisture Management Tester]]></title><link><![CDATA[https://qinsunlab.en.ec21.com/Moisture_Management_Tester--10021807_10021950.html]]></link><description><![CDATA[Principle:
The Moisture Management Tester (MMT) is an equipment to measure the dynamic liquid transport properties of textiles such as knitted and woven fabrics in three dimensions.
1. Absorption Rat]]></description><pubDate><![CDATA[20160615]]></pubDate></item>
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<title><![CDATA[CDW-60 Impact Test Low Temperature Chamber / Environmental Chamber]]></title><link><![CDATA[https://astmtester123.en.ec21.com/CDW_60_Impact_Test_Low--9999940_10000040.html]]></link><description><![CDATA[principle of heat balance and mixing method of circulation to achieve uniformity of the sample auto-cooling and temperature, to fully meet the temperature indicators of national standard GB/T229-2007]]></description><pubDate><![CDATA[20190815]]></pubDate></item>
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<title><![CDATA[Sight Glass Type Level Gauge]]></title><link><![CDATA[https://aohonggaugeglass.en.ec21.com/Sight_Glass_Type_Level_Gauge--11850290_11850306.html]]></link><description><![CDATA[PrincipleThe working principle of the Glass Plate Level Gauge is simple yet effective. It operates based on the fact that liquid inside a container seeks its own level. The gauge comprises a transpar]]></description><pubDate><![CDATA[20231004]]></pubDate></item>
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<title><![CDATA[Low Temperature Meter / Impact Testing Machine]]></title><link><![CDATA[https://lgtester789.en.ec21.com/Low_Temperature_Meter_Impact_Testing--10000308_10000400.html]]></link><description><![CDATA[principle of heat balance and mixing method of circulation to achieve uniformity of the sample auto-cooling and temperature, to fully meet the temperature indicators of national standard GB/T229-2007]]></description><pubDate><![CDATA[20190821]]></pubDate></item>
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<title><![CDATA[Plastic Moisture Analyzer]]></title><link><![CDATA[https://xmkwdz.en.ec21.com/Plastic_Moisture_Analyzer--10236594_10236600.html]]></link><description><![CDATA[Product Description 
Introduction 
Halogen Moisture Analyzer, is a new rapid moisture testing instruments. designed according to the Pyrolysis weight principle. When measuring the sample &amp;#39;s weigh]]></description><pubDate><![CDATA[20161204]]></pubDate></item>
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<title><![CDATA[LM-79 Moving Detector Goniophotometer]]></title><link><![CDATA[https://lisungroup1.en.ec21.com/LM_79_Moving_Detector_Goniophotometer--11802221_11802222.html]]></link><description><![CDATA[principles are according to IESNA and CIE. The LSG-6000 completely meet the LM-80, LM-79, LM-75, GB, EN and CIE121-1996 standards.• Special collimation device with cross laser line help you install]]></description><pubDate><![CDATA[20230907]]></pubDate></item>
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<title><![CDATA[Transformer Variable Ratio of Entire Inspection Test]]></title><link><![CDATA[https://nanaoelec.en.ec21.com/Transformer_Variable_Ratio_of_Entire--10586983_10714599.html]]></link><description><![CDATA[principle of structure 
Instrument A, B, C, respectively, for three-phase input, junction ratio of the primary side of the tester, a, b, c for the three-phase output, connected to the secondary side ]]></description><pubDate><![CDATA[20180827]]></pubDate></item>
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<title><![CDATA[Water Vapor Permeation Rate Tester Weighing Method Aluminized Foil ASTM]]></title><link><![CDATA[https://systester18.en.ec21.com/Water_Vapor_Permeation_Rate_Tester--10834034_10942639.html]]></link><description><![CDATA[Principles：
The specimen is clamped between the upper and lower chamber, the upper chamber is high humidity side, and the other side of specimen, lower chamber is purged by a stream of dry gas, due]]></description><pubDate><![CDATA[20221214]]></pubDate></item>
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<title><![CDATA[Drop Ball Shock Tester]]></title><link><![CDATA[https://yuanchenwujin68.en.ec21.com/Drop_Ball_Shock_Tester--11261871_10963357.html]]></link><description><![CDATA[Principle:
Determination of whether the safety
glazing material has a certain minimum strength and cohesion under impact
from a small hard object
Ball Drop Test Frame, Ball Drop Test Device
Manufactu]]></description><pubDate><![CDATA[20230719]]></pubDate></item>
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<title><![CDATA[CO/CO2/SO2/NO Analyzer]]></title><link><![CDATA[https://xajunengins.en.ec21.com/CO_CO2_SO2_NO_Analyzer--10893051_11403132.html]]></link><description><![CDATA[Principle
Infrared gas analyzer is a new type infrared gas analyzer which is designed and produced by nondispersive infrared principle
Technical Parameter
Accuracy: 
≤±1% FS
Main Index:
Zero Drift]]></description><pubDate><![CDATA[20210621]]></pubDate></item>
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<title><![CDATA[Oxygen Permeability Testing Instrument (OTR Tester)]]></title><link><![CDATA[https://gbpitester.en.ec21.com/Oxygen_Permeability_Testing_Instrument_OTR--11629254_11631103.html]]></link><description><![CDATA[principle
Gravimetric method. Fix the test sample in the middle of test chamber to separate the chamber into upper room and lower room; humid gas flows in upper room, and place desiccant device in lo]]></description><pubDate><![CDATA[20220901]]></pubDate></item>
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<title><![CDATA[Automatic Cleanliness of Oil Tester]]></title><link><![CDATA[https://precisionbe.en.ec21.com/Automatic_Cleanliness_of_Oil_Tester--11718430_11856616.html]]></link><description><![CDATA[principle of the photoresist (shading) method, which fully complies with the corresponding national military standards and international standards. It can provide fast, accurate, reliable and repeata]]></description><pubDate><![CDATA[20231019]]></pubDate></item>
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<title><![CDATA[Electrical Asphalt/Soil Non-nuclear Density Gauge for Civil Engineering]]></title><link><![CDATA[https://tianpeng01.en.ec21.com/Electrical_Asphalt_Soil_Non_nuclear--10976325_10976334.html]]></link><description><![CDATA[principle , is a non-radioactive substances, environmental non-contact instrument .
Non-nuclear density gauge asphalt characteristics:
Fast measurement speed --- display the measurement results withi]]></description><pubDate><![CDATA[20230530]]></pubDate></item>
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<title><![CDATA[LM-79 Moving Detector Goniophotometer (Mirror Type C)]]></title><link><![CDATA[https://lisungroup7.en.ec21.com/LM_79_Moving_Detector_Goniophotometer--11882688_11882689.html]]></link><description><![CDATA[principles are according to IESNA and CIE. The LSG-6000 completely meet the LM-80, LM-79, LM-75, GB, EN and CIE121-1996 standards.• Special collimation device with cross laser line help you install]]></description><pubDate><![CDATA[20240102]]></pubDate></item>
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<title><![CDATA[KRD13 High Energy Shock Test System]]></title><link><![CDATA[https://creditcme.en.ec21.com/KRD13_High_Energy_Shock_Test--11098426_11099352.html]]></link><description><![CDATA[KRD13 High
Energy Shock Test System
KRD13 series high energy shock test system
is specially designed to meet the requirements of military industry and home
appliances. The system adopts the principle]]></description><pubDate><![CDATA[20240402]]></pubDate></item>
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<title><![CDATA[Programmable Working Salt Spray Test Machine for Anti-Corrosion Performance Test in Lab]]></title><link><![CDATA[https://lituotest.en.ec21.com/Programmable_Working_Salt_Spray_Test--11372315_11372345.html]]></link><description><![CDATA[principle to absorb the brine and atomize it with uniform atomization without blocking crystallization to ensure the standard of continuous testing;
(B) nozzle: made of special glass nozzle, which ca]]></description><pubDate><![CDATA[20210423]]></pubDate></item>
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<title><![CDATA[Computer Control YFTD300 Safety Valve Test Bench for Safety Valve Pressure Calibration and Seal Test]]></title><link><![CDATA[https://king3834656.en.ec21.com/Computer_Control_YFTD300_Safety_Valve--11745449_11747422.html]]></link><description><![CDATA[principle and structure The YFT-D safety valve performance test bench integrates with machine, electricity and liquid. It uses gas as the test medium, and is pressurized by liquid-gas linkage. It is ]]></description><pubDate><![CDATA[20230330]]></pubDate></item>
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<title><![CDATA[IEC61180-1 Impulse Withstand Voltage Generator with 1.2/50us Waveform]]></title><link><![CDATA[https://pegogroup.en.ec21.com/IEC61180_1_Impulse_Withstand_Voltage--11421920_11425210.html]]></link><description><![CDATA[Working power: 220V±10% AC, 50/60Hz
10) Dimension: 470mm*260mm*500mm (W*H*D)
11) Weight: 35KG 
4. Principle and waveform
1) 1.2/50ms surge waveform (generator section) equivalent circuit
]]></description><pubDate><![CDATA[20210805]]></pubDate></item>

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