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<title><![CDATA[EC21 Product Catalogs - positive & negative]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/positive_negative--2717/1/positive & negative.html]]></link><item>
<title><![CDATA[Secure Seal Tester]]></title><link><![CDATA[https://sookiecanneed.en.ec21.com/Secure_Seal_Tester--12024209_12034886.html]]></link><description><![CDATA[Positive Pressure Method, avoiding the deficiency when the measuring pressure is less than 1bar with Negative Pressure Method.Made from anodized aluminium, stainless steel, and plastic materials, sol]]></description><pubDate><![CDATA[20250106]]></pubDate></item>
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<title><![CDATA[YH800F Portable Fully Automatic Pressure Calibration Device]]></title><link><![CDATA[https://yuanhuatc66.en.ec21.com/YH800F_Portable_Fully_Automatic_Pressure--12022422_12022441.html]]></link><description><![CDATA[Positive and negative promotion function, perfectly achieving reverse calibration of pointer meters;
◆ Real time display of pressure rise and fall curves and error curves;
◆ Icon based management]]></description><pubDate><![CDATA[20241105]]></pubDate></item>
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<title><![CDATA[Multi Channel Ultrasonic Flaw Detector]]></title><link><![CDATA[https://ajrndt.en.ec21.com/Multi_Channel_Ultrasonic_Flaw_Detector--11973711_11973720.html]]></link><description><![CDATA[Positive halfwave, Negative halfwave, Fullwave, RF
System Linearity
Horizontal: +/-0.1% FSW, Vertical: 2% FSH, Amplifier Accuracy +/-1 dB
Reject (suppression)
0 to 80% full screen height
Units
Metric]]></description><pubDate><![CDATA[20240723]]></pubDate></item>
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<title><![CDATA[IEC61000-4-2 Electrostatic Discharge Generator with 20KV Output Voltage]]></title><link><![CDATA[https://pegoelectronics.en.ec21.com/IEC61000_4_2_Electrostatic_Discharge--11944039_11946383.html]]></link><description><![CDATA[Positive, negative, positive/negative auto
Trigger mode
Single,counting,20pps,other
Discharge interval:
0.05~99.99s
Numbers of discharge:
1~9999
Energy storage capacitance:
150pF ±10％(replaceable)]]></description><pubDate><![CDATA[20240603]]></pubDate></item>
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<title><![CDATA[New NDT Systems Bondascope 3100 Ultrasonic Bond]]></title><link><![CDATA[https://117714.en.ec21.com/New_NDT_Systems_Bondascope_3100--11801594_11801603.html]]></link><description><![CDATA[Positive or negative operationStorage100 setups and 250 screens with real-time date and time stampDimensions9.25″H x 5.5″W x 2.9″D (235x140x74mm)Weight5-lb (2.26kg) including batteryAPPLICATION]]></description><pubDate><![CDATA[20230604]]></pubDate></item>
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<title><![CDATA[100V 120A 18650 Finished Battery Pack 100v200a 300a Tester for Lithium Battery Pack Assembly Line]]></title><link><![CDATA[https://aitop2018.en.ec21.com/100V_120A_18650_Finished_Battery--11585406_11639412.html]]></link><description><![CDATA[positive and negative poles of the battery.2. AC internal resistance: test the resistance at both ends of the battery discharge circuit.3. Discharge test: test the continuous carrying capacity of the]]></description><pubDate><![CDATA[20240109]]></pubDate></item>
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<title><![CDATA[High Voltage Lightning Surge Generator]]></title><link><![CDATA[https://15317383997.en.ec21.com/High_Voltage_Lightning_Surge_Generator--11812738_11812759.html]]></link><description><![CDATA[Positive, Negative or Positive/Negative automaticPhase ShiftAsynchronous, Synchronization 0°~ 360° or Specific AngleSpecial FunctionN/ABuilt-in High voltage and current 2000:1 attenuator probe (Les]]></description><pubDate><![CDATA[20231024]]></pubDate></item>
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<title><![CDATA[IEC61000-4-5 Lightning Surge Generator]]></title><link><![CDATA[https://pegogroup.en.ec21.com/IEC61000_4_5_Lightning_Surge--11421920_11421956.html]]></link><description><![CDATA[Positive, negative, positive/negative automatically
Output impedance
2Ω±10％
Trigger mode
Synchronization,asynchronization
Inject phase
Freely set at 0－360°，resolution:1°
Trigger mode
Auto o]]></description><pubDate><![CDATA[20210729]]></pubDate></item>
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<title><![CDATA[Sterility Test Closed Canister]]></title><link><![CDATA[https://shenzhilin.en.ec21.com/Sterility_Test_Closed_Canister--11772709_1405110.html]]></link><description><![CDATA[positive result by sterilization and false negative result by EtO.
＊Double package including certain negative pressure, eliminating the risk of false positive and false negative.
＊Each set of clo]]></description><pubDate><![CDATA[20230721]]></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[negative pressure (0-1Bar) or positive pressure (1-2Bar) two modes to analysis
Accuracy: accuracy ±0.02%, repeatability ±0.01%, resolution can reach 0.0001 g/cc
Sample Ports: three samples analysis]]></description><pubDate><![CDATA[20240118]]></pubDate></item>
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<title><![CDATA[Automatic Safety Test System]]></title><link><![CDATA[https://lisungroup1.en.ec21.com/Automatic_Safety_Test_System--9657760_11802784.html]]></link><description><![CDATA[negative voltage, and the ground is a positive. When testing capacitance, there is a charging process when voltage is applied to both ends of the capacitor. At this time, there is a charging current ]]></description><pubDate><![CDATA[20230907]]></pubDate></item>
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<title><![CDATA[NAVLF Ultra-low Frequency High Voltage Generator]]></title><link><![CDATA[https://nanaoelec.en.ec21.com/NAVLF_Ultra_low_Frequency_High--10586964_10725175.html]]></link><description><![CDATA[&amp;mu;F (theoretical value, on-site cable length 1-3 km) 
0.02 Hz Maximum 5.5&amp;mu;F (theoretical value, on-site cable length 1-3 km) 
4, Accuracy: 3% of full scale 
5, The voltage positive and negative ]]></description><pubDate><![CDATA[20180827]]></pubDate></item>
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<title><![CDATA[Automatic Safety Test System]]></title><link><![CDATA[https://lisungroup7.en.ec21.com/Automatic_Safety_Test_System--11882688_11882704.html]]></link><description><![CDATA[negative voltage, and the ground is a positive. When testing capacitance, there is a charging process when voltage is applied to both ends of the capacitor. At this time, there is a charging current ]]></description><pubDate><![CDATA[20240102]]></pubDate></item>

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