TM-508A Milliohm Meter
Very low impedance measurement by Four Wire type one pair coated clip.
Application
- Utility area:measurement of secondary transformer winding;measurement of division switch for sufficient low-ohm value
- Manufactures or users of relays and protective device
- Manufacturers of switches buttons,contact material
Features
- Very low impedance measurement by Four Wire type one pair coated clip.
- There is a fuse (0.5A/250V) to pro the input circuit.
- Applicable measurement of Resistance, motor coil, transformer, Printed Circuit Board.
- Accurate measurement of conductor, light electricity and welding point.
- Wide measurement range, 0.1 mΩ to 20kΩin 6 positions.
- D – H Switch: Lockup readings for LCD display.
Specifications
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Display:3½ digits, LCD display with max. reading of 1999 with decimal point and measurement unit.
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Overload indication:“OL” indication.
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Zero Adjust:External zero adjust knob.
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Low battery indication:Replace battery as LCD display “
” -
Reading speed:2.5 times per second.
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Operating attitude:Max. 2000 meters above level.
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Operating ambience:In-door use, under environmental pollution grades two.
Electrical Specifications(23℃±5℃, below 80％RH )
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Range
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Accuracy
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Resolution
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Testing current
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Open Voltage
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|
200mΩ
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±(0.3%+4dgt)
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0.1mΩ
|
100mA
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Approx.4.8VDC
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|
2Ω
|
1mΩ
|
10mA
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||
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20Ω
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10mΩ
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10mA
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||
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200Ω
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0.1Ω
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1mA
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||
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2kΩ
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1Ω
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1mA
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||
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20kΩ
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10Ω
|
100uA
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US 7515 
GB 7285 
AU 6738 
CA 6682 
IE 4187 
NZ 2821 
BR 909 
CN 793 
