Высокое качество небольшая ошибка сопротивления заземления Измеритель сопротивления заземления/многофункциональная сопротивления заземления клещи

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Product Overview

Description


 High Quality Error Small grounding resistance earth tester/ Multi-function earth resistance clamp meter



Product Description


ST2241 grounding resistance earth tester


1.Basic introduction


Product Name: High Quality Error Small grounding resistance earth tester digital, Multi-function earth resistance clamp meter


Function: grounding resistance, soil resistivity;Ground voltage, AC voltage measurement


Soil Resistivity Range: 0.00Ωm~1kΩm


Resistance Range: 0.00Ω~100.0kΩ


Voltage Range: AC 0.0~600V


Measurement Method: precision four-wire, three-wire measurement, simple two-wire measurement


Line Voltage: measure below AC 100V


Application: ST2241 soil resistivity earth resistance tester is adopted the latest digital and micro-processing technology and can accurately detect ground resistance, soil resistivity, and ground voltage. It uses a fast filtering technique to minimize interference. Displaying the resistance value of the auxiliary electrode in the same screen, which is convenient for judging the measurement error caused by environmental factors, facilitating more accurate measurement of the grounding true resistance value.Widely used in telecommunications, electricity, meteorology, computer rooms, oil fields, power distribution lines, iron tower transmission lines, gas stations, factory grounding networks, lightning rods and so on. The instrument has the characteristics of precise, fast, simple, stable and reliable.


 


2.Technical Parameters


2.1 Baseline and working conditions


 










































Impact



Benchmark condition



Working conditions



Note



Auxiliary grounding resistance value



< 100Ω



 < 100kΩ



rC, rP



Electrode distance when measuring R



 a> 5d



a> 5d



----



Electrode distance when measuring ρ



a>20h



a>20h



----



Ambient temperature



23℃±1℃



-10℃~40℃



----



Environment wet crossing



40% ~ 60%



<80%



----



  


2.2.General specifications













































































Function



Two, three or four wires measure ground resistance and soil resistivity;Ground voltage, AC voltage measurement



Power supply



DC 8.4V (2 rechargeable lithium batteries)



Range



Ground resistance: 0.00Ω~100.0kΩ



Soil resistivity: 0.00Ωm ~ 1kΩm (then multiplied by the coefficient 2πa)



Measurement method



Precision 4-wire, 3-wire measurement, simple 2-wire measurement of ground resistance



Short-circuit test current



AC ± 20mA max



Open circuit test voltage



AC ± 20V max



Test voltage waveform



square wave (1KHz)



Electrode pitch range



can be set from 1m to 10m



Standard test line



4 strips: 2 strips of 20m length, 2 strips of 10m length



Simple test lead



2 strips: 1.0m yellow, 1 each green 1.0m



Auxiliary ground rod



4 pieces:φ10mm×150mm



Line voltage



AC 600V or less



USB interface



With USB interface, software real-time monitoring, stored data can be uploaded to the computer, save and print, soil layer analysis and other functions



Communication line



1 USB cable, 1.5m long



Auxiliary ground test



With auxiliary ground resistance value test function, but must meet R + rC <50kΩ, R + rP <50kΩ R is the measured ground resistance



Working temperature and humidity



-10℃~40℃;



Storage temperature and humidity



-20℃~60℃; 


















 


 


2.3.Basic error and performance index under reference conditions


 
















































Measurement function



Measuring range



Precision



Resolution



Ground resistance(R)



0.200Ω~2.000Ω



±5%rdg±5dgt



0.001Ω



02.00Ω~20.00Ω



±2%rdg±3dgt



0.01Ω



020.0Ω~200.0Ω



±2%rdg±3dgt



0.1Ω



0200Ω~2000Ω



±2%rdg±3dgt





02.00kΩ~20.00kΩ



±5%rdg±5dgt



10Ω



Soil resistivity(ρ)



depends on the measurement range of R


(ρ=2πa(R÷100)   a:1 m~100m;π=3.14)


(ρmin = 1.256Ωm , ρmax = 125.6KΩm )



Ground voltage



AC 0.0~600V



±2%rdg±3dgt



0.1V



 


Note: 1. When rC or rP is larger, the additional error is ≤ ± 3% rdg ± 5dgt.(rC max < 50kΩ; rP max < 50kΩ)


 


3.Applicable scene


grounding resistance earth tester  grounding resistance earth tester  grounding resistance earth tester


Ground resistance test                  AC step voltage test                      Soil resistivity test


 



Company Information


 grounding resistance earth testergrounding resistance earth tester





Packaging & Shipping


 grounding resistance earth tester





FAQ


Q: Are you a factory or a trading company?


    A: We are professional testing equipment manufacturer.


Q: When can I get the price?


    A: Usually we quote within 12 hours after we get your enquiry. You can also place an order directly on the product page.


Q: What are your Delivery terms?


    A: We accept EXW, FOB, CFR, CIF, CPT, you can choose convenient and cost-effective.


Q: What is the payement terms?


    A: T/T bank transfer,L/C,western union,we suggest your side to pay online of alibababy credit card,and trade assurance.


Q: What about the after-sale service?


    A: Guaraantee period is 12 months,after the warranty,we also provide life-long paidrepair or service.


Q: What about the delivery date?


    A: Usually we offer 1-2 weeks after order confirmed and payment received,and we can also accept urgent order for prompt shipment.


Q: What about the transportation?


    A: It depends on your requirement.We can delivery by air to your airport, or by sea to your seaport, ordelivery to your office address by express courier, and we also accept to cooperate with your ship agentor forwarder.


Q: What about the package?


    A: Usually we offer wooden cases, or multilayer carton boxes inner with plastic filmwrapped, or customized foam or aluminum suitcase, we will offer package pictures for customer referencebefore delivery out the goods.


Q: What about the M.O.Q?


    A: Usually we do not have M.O.Q, we can offer even only 1 unit, while, you are  welcome to order in bulk, andwe are quite pleasure to offer pleasant outstanding discount.


Q: What about the power supply?


    A: Usually we offer 110V/50HZ, and we can also convert the power suooly to meet your local power supply, kindly contact us for confirmation.


Q: Are your operation keypad, interface, software and manual in English version?


    A: Yes, its operation keypad, interface,software and manual in English version if you need other languages,kindly contact us for confirmation.


Q: Can you offer quality certification?


    A: Yes, we can offer quality certification issued by our lab free of charge, or issued by third-party international inspection Organization with extra charge please cantact us for confirmation.


Q: Can you do the calibration and installation before handover the goods?


    A: Yes, we do installation, checking and calibration works before packed and handover the goods. Customer can do tests directly only after some simply installation.


 


How to place an order?


 


Q: How to confirm the order?


    A: You can send us your purchase order, sign&stamp back by us to make the order be confirmed, or send us email mention us the order was confirmed by your side, then attached the proforma invoice with bank information by return the email from us to confirm the order, Or you can start order online of alibaba,com by Secure payment or trade assurance, please contact us for further detail confirmation.


Q: How to pay?


    A: Please send us the paymengt by T/T(Telegraphic Transfer), and send us copy of payment,so that we can arrange its process.You can also pay ue by West union, and we also accept order and pay online of alibaba.com by Secure payment or trade assurance, please contact us for further detail confirmation.


Q: What is the valid for the PI(proforma invoice)?


    A: Considering the changing of the freight charge, Please do the transfer within 2 weeks.




 


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