Ideal for automatic measurement of ultra-low resistor
● Most suitable to measure ultra-low resistance for shunt-resistor, etc.
● Measurement not to influenced by thermal electro motive force.
● Impressed the measuring current at pulse interval, in order to reduce abrasion of measuring terminal.
● Contact-check is equipped as standard function.
● Measuring range：0.0000mΩ～1500.0Ω
● Available to measure the persent the set reference value: 0.5mΩ～1kΩ ±50.00% [Minimum resolution of 50n ohm]
● GP-IB/RS-232C/Centoronics output available. (Option)
● Comparison result by built-in comparator is open-collector output and displayed as LO, GO, HI by LED and buzzer.
● Measuring current/voltage-check are built-in as standard function.
Specifications
Measuring range and Accuracy (at23℃±5℃)
| Range | Measuring range | Resolution | Measuring current | Accuracy [Slow] |
|---|---|---|---|---|
| 1mΩ | 0.0000mΩ～1.5000mΩ | 0.1μΩ | 3A | within ±(0.01％rdg＋1μΩ) ±3digit [Average] ±4digit [Slow] ±5digit [Fast] |
| 10mΩ | 0.000mΩ～15.000mΩ | 1μΩ | 1A | |
| 100mΩ | 0.00mΩ～150.00mΩ | 10μΩ | ||
| 1Ω | 0.0000Ω～1.5000Ω | 100μΩ | 100mA | |
| 10Ω | 0.000Ω～15.000Ω | 1mΩ | ||
| 100Ω | 0.00Ω～150.00Ω | 10mΩ | 10mA | |
| 1kΩ | 0.0Ω～1500.0Ω | 100mΩ | 1mA | |
| ％ | 0.5mΩ～1kΩ/±50.00％ | 0.01％ [50nΩ] | refer to the above |
| Open-circuit voltage of measuring terminal | less than 5V |
|---|---|
| Measuring method | 4-terminal measurement [contact check] |
| Sampling time | [Free running mode] 2～10 times per second |
| [Remote start mode] FAST about 17.5msec./SLOW about 29.8msec. [Single Mode] | |
| Comparator set range | 4½ Digit (15000) both for high and low limit, % range：50.00％ [low：0～－50.00％, high：0～＋50.00％] |
| Indication of comparator’s comparison result | LED indication LO/GO/HI and buzzer |
| Control signal | Remote start input：”L” [OV] →”H” [DC12V] start |
| Remote hold input：Open and “H” [DC12V]：Free run / “L” [OV]：Hold | |
| comparison output [LO/GO/HI]：open collector：max.40V, 100mA | |
| contact error output [CONT-E]：open collector：max.40V, 100mA | |
| end of comparison output [EOC]：open collector：max.40V, 100mA | |
| Operation condition | [Temp.] ＋5℃～＋40℃ [Humidity] less than 85％ |
| Power supply | AC100V/117V/220V/240V selectable, 50/60Hz, about 60VA |
| Outer dimension | about 250 (W) ×99 (H) ×300 (D) mm (excluding protruding parts such as rubber legs, etc.) |
| Weight | about 3.4kg |
The Outline
AX-115B high accuracy Dc digital Low-ohm meter can measure ultra low resistance from 0.0000mΩ to 1500.0Ω (percentage measurement: 0.5mΩ～1.0000kΩ±50.00％) ultra fast, high accuracy.
Either one of GP-IB, RS-232C or centronics output interface could be equipped as an option.
Furthermore, contact check function is standard equipment: When measure 4 terminals, either one contact failure occurs, outputs judgment signal and contact Error signal all together.