TM-508A Milliohm Meter
The TM-508A Battery Powered Milli-Ohmmeter offers very low impedance measurement by the Four Wire method (one pair of testing clips supplied).TM-508A applications include measurement of resistance in motor coils, transformers and printed circuit boards, plus the measurement of conductor, light electricity and welding point. The instrument’s wide measurement range is from 0.1mΩ to 20kΩ in 6 positions.
Features
- 3-1/2 digit LCD display with maximum reading of 2000.
- Battery powered with Low battery indication.
- Zero adjustment: External zero adjustment control.
- Very low impedance measurement, four-wire type, one pair insulated clip.
- Wide measurement range, 0.1 mΩ to 20kΩ in 6 positions.
- D – H Switch: Lockup readings for LCD display.
- Fuse protection: 2 Amp/250Volt (5mm x 20mm), fast minimum interrupt ratings 1500A.
- Low battery indication
Applications
- Utility area : measurement of secondary transformer winding; measurement of division switch for sufficient low-ohm value.
- Manufactures or uses of relays and protective device.
- Manufactures of switches buttons, contact material.
Technical Specifications
Measuring Ranges | Accuracy | Resolution | Testing Current | Open-Terminal Voltage |
---|---|---|---|---|
200 milliohms | ±(0.3% + 4d) | 0.1 milliohm | 100mA | 1.0 Volt maximum |
2 ohms | ±(0.3% + 4d) | 1 milliohm | 10mA | 1.0 Volt maximum |
20 ohms | ±(0.3% + 4d) | 10 milliohms | 10mA | 1.0 Volt maximum |
200 ohms | ±(0.3% + 4d) | 0.1 ohm | 1mA | 1.0 Volt maximum |
2k ohms | ±(0.3% + 4d) | 1 ohm | 1mA | 1.0 Volt maximum |
20 kohms | ±(0.3% + 4d) | 10 ohms | 1mA | 1.0 Volt maximum |
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