digital earth tester什么意思 啥意思

来源：蜘蛛抓取(WebSpider) 时间：2014-12-10 03:12 标签： tester什么意思
Digital Earth 2020 towards the vision for the next decade数字地球、GIS文献综述
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Digital Earth 2020 towards the vision for the next decade数字地球、GIS文献综述
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Digital Earth Resistance Tester
Application
GDCR3000 Digital Earth Resistance Tester is specially designed and manufactured for field measurement, adopting the latest digital and micro-processing technology, 3-pole or 2-pole method for earth resistance measurement, with a unique function of wire resistance verification, anti-interference capability and the ability to adapt to the environment, to ensure high precision, high stability and reliability for prolonged measure, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth ground resistance measurement.
GDCR3000 Digital Earth Resistance Tester has a unique function of wire resistance verification，more accurate on measuring on-site low value earth ground resistance, which can avoid error caused by resistance change due to prolonged u avoid error caused by testing wire that is failed to be fully inserted into tester interfac avoid error caused by users’ replacing or lengthening testing wires.
GDCR3000 Digital Earth Resistance Tester is composed of host machine, monitoring software, testing wires, communication wires and others. The large LCD display of host machine is with blue backlight and bar graph indicating that can be seen clearly. At the same time it can store 400 sets of data, fulfilling historical inquiry and online real-time monitoring through monitoring software, dynamic display, with the maximum, minimum, and mean indicators, with alarm settings and alarm indicator, and with the functions like historical data access, reading, preservation, report forms, printing and so on.
Specification
Earth resistance measurement, earth voltage measurement,Low resistance measurement
(Zn-Mn dry battery R14S
1.5V 6 pieces,Continuous 300
Methods of Measurement
Earth resistance :Rated current
test current : 3mA
Max, 820Hz; Earth voltage : Average rectifier
4 digital LCD display,Blue-screen backlight
Indicator light
LED indicator flash during test,LCD count down display
124mm×67mm
Instrument -- 215mm×190mm×95mm,1443g( included battery)
Test leads -- 1.6m*2pieces , 20m*1 piece , 10m*1 piece , 5m* 1 piece ,
Ground rop-- φ10mm×150mm*2pieces , φ10mm×150mm ,468g
Carrying bag: 915g
Resistance
Test Range: 0.01Ω~20Ω( resolution--0.01Ω) ,0.1Ω~200Ω( resolution --0.1Ω),1Ω~2000Ω( resolution --1Ω) ; accuracy :±1%reading±3dgt
AC 0~600V ;
accuracy :±1%reading±3dgt
Earth voltage:about 3 times/second
earth resistance:about 5 second/time
Above 5000 times
Line voltage
Earth voltage:measure below AC 600V
RS232 connector,Software monitoring,stored data can be uploaded to PC , storage and printed.
Communication cable
RS232 ,1.5m * 1 piece
-10 ℃ ~40 ℃ ;below 80%rh
-20 ℃ ~60 ℃ ;below 70%rh
protection
Measurement of earth resistance:E-P,E-C ; AC
280V/ 3 secs
Insulation
resistance
Above 10MΩ(between circuit and the shell , 500V)
3700V/rms(between circuit and the shell)
Electromagnetic property
,electromagnetic field≤1V/m
IEC61010-1 ,
IEC , IEC, IEC60529(IP54)
You may need other related products of the GDCR3000
Digital Earth Resistance TesterContact Us
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