HIOKI RM3548高精度便携式电阻计
HIOKI RM3548万用表|高精度便携式电阻计是一款高性能的便携式微电阻计,其设计旨在满足对高精度电阻测量的严格要求。Hioki直流电阻测试仪RM3548精度0.02%能够提供从微欧姆(μΩ)到兆欧姆(MΩ)宽广范围内的直流电阻测试。尤其针对电动汽车(EV)和混合动力汽车(HEV)中的大型电机、变压器以及电力电子设备中的线圈绕组电阻、焊接点电阻等元件的测试,RM3548采用4端子测试法以减少接触电阻的影响,并且具备温度补偿功能,使用标配的温度传感器Z2001可以实时监测并自动校正因温度变化带来的电阻值误差,确保在各种环境条件下得到准确可靠的测量结果。另外它还支持大电流测试,例如1A测试电流下可测低至0.0μΩ的电阻,这对于检测低阻抗部件如电池连接器或功率半导体器件的接线电阻至关重要The HIOKI RM3548 is a high-precision portable resistance meter designed for accurate and reliable measurements in various industrial applications. Offering an exceptional 0.02% basic accuracy, this device delivers precise readings with a maximum resolution of 0.1 microohms (μΩ). The RM3548 is capable of measuring resistances ranging from as low as 0.0 μΩ at a testing current of 1 ampere up to 3.5 Megaohms (MΩ), making it particularly suitable for testing large equipment such as the windings in electric motors used in hybrid and electric vehicles.
This instrument incorporates a temperature correction function which, when paired with the optional temperature sensors Z2001 or Z2002, adjusts measured resistance values based on temperature changes within a reference temperature setting range of -10°C to 99.9°C and a temperature coefficient setting range of -9,999 ppm to +9,999 ppm.The RM3548 also boasts convenient data logging capabilities, allowing users to effortlessly record up to 1,000 data points directly into its memory simply by applying the probes to the test point. This feature, coupled with interval measurement functionality, enables seamless capturing of temperature-rise test data during continuous monitoring.Its rugged, compact design ensures that the RM3548 is not only ideal for benchtop use but also perfect for on-site maintenance and testing scenarios where portability and ease of use are key requirements. With a maximum measurable current of 1 amp, this versatile resistance meter offers robust specifications that cater both to manual operation and integration into automatic test lines.
RM3548万用表|高精度便携式电阻计应用领域
- 电动汽车(EV)等电位连接测试
- 电动和混合动力汽车的防触电保护测试
- 验证大型设备是否具有相同的电势
- 估计铜线的长度
- 测试飞机机身的电气和机械状况
HIOKI RM3548核心特性
- 测量范围广泛:RM3548能够从极低的微欧姆级别(0.0 μΩ,在测试电流为1 A时)一路测量到高达3.5 MΩ的电阻值,几乎覆盖了所有工业应用中的电阻测量需求,特别适合混合动力及电动汽车领域中大型电机绕组、焊接点以及电力电子设备的电阻检测。
- 高精度与分辨率:具备0.02%的基本测量精度和0.1μΩ的*小分辨率,确保即使是微小的电阻变化也能被准确捕捉,这对于关键组件的质量控制和故障排查至关重要。
- 智能功能:内置温度修正功能,配合选配的温度传感器Z2001或Z2002,可在-10℃至99.9℃的参考温度范围内设置,并支持-9,999 ppm到+9,999 ppm的温度系数设定,实现电阻随温度变化的自动校正,保证了在不同环境温度下的测量准确性。
- 数据记录与分析能力:操作简便且高效,只需将探头接触待测部件,即可轻松记录多达1000个数据点并存储在仪器内存中。此外,通过间隔测量功能,可以连续监测并平滑地捕获电阻随时间变化产生的温度上升测试数据。
- 便携与灵活性:RM3548采用了紧凑轻便的设计理念,最大测试电流可达1A,使得这款电阻计既适用于实验室内的精准测试,又方便携带至现场进行大型设备的维护与检测工作。
RM3548万用表|高精度便携式电阻计具有以下显著特点
- 精度保证:提供一年保修期。
- 电阻测量范围宽广,从3 mΩ至3 MΩ,分10个量程级别,并拥有0.1 µΩ的高分辨率。
- 测量精度极高,达到±0.020 % rdg. ±0.007%fs,确保了精准的测试结果。
- 提供多种测试电流选择,如在3 mΩ量程下可使用1 A DC电流,在3 MΩ量程下则降至500 nA DC。
- 开路电压限制在最大5.5V直流,以确保安全操作。
- 配备温度传感器Z2002后,能够进行温度测量,范围为-10.0 至 99.9°C,精度达±0.50°C。
- 支持多种实用功能,包括温度校正、失调电压补偿(OVC)、比较器模式、长度转换、判断音设置、自动保持、自动省电模式、平均计算、数据存储/加载,以及USB通信接口,方便与电脑连接并识别为大容量存储设备。
- 内存存储能力强,可手动或自动记录多达1,000个数据点,间隔测量模式下最多可记录6,000个数据点,并支持按照设定的时间间隔(0.2~10.0s)连续采集数据。
- 功耗低,采用8节LR6(AA)碱性电池供电,可持续使用约10小时;同时提供USB充电方式。
- 尺寸紧凑轻便,尺寸为192毫米(宽)×121毫米(高)×55毫米(深),重量仅为770克。
- 随附丰富的配件,包括夹式导线、温度传感器Z2002、碱性电池、USB线、背带、备用保险丝以及详尽的使用说明书。
Basic specifications-Accuracy guaranteed: 1 year
Resistance range |
3 mΩ (3.5000 mΩ display Max., 0.1 µΩ resolution) to 3 MΩ range (3.5000 MΩ display Max., 100 Ω resolution), 10 steps Measurement accuracy: ±0.020 % rdg. ±0.007 % f.s. |
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Testing current | [at 3 mΩ range] 1 A DC to [at 3 MΩ range] 500 nA DC | |||||
Open-terminal voltage | 5.5 V DC max. | |||||
Temperature measurement |
-10.0 to 99.9°C, accuracy : ±0.50°C (Temperature Sensor Z2002 and RM3548 combined accuracy) |
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Measurement speed | Fixed | |||||
Display refresh rate | Without OVC: approx. 100ms, With OVC: approx. 230ms | |||||
Functions |
Temperature correction, temperature conversion, offset voltage compensation (OVC), comparator (ABS/REF%), length conversion, judgment sound setting, auto hold, auto power save (APS), Averaging, panel store/panel load, USB communication interface (RM3548 internal memory is recognized as a mass storage device when connected to a PC) |
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Memory storage |
Number of recordable data points: (manual/auto) Up to 1,000, (interval) Up to 6,000; Interval: 0.2 to 10.0s (0.2s steps); Acquisition of data from memory: display, USB mass storage (CSV, TXT files) |
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Power supply |
LR6 (AA) Alkaline batteries ×8, Continuous use: 10 hours (Under our company’s conditions), Rated power consumption: 5 VA max. |
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Dimensions and mass | 192 mm (7.56 in) W × 121 mm (4.76 in) H × 55 mm (2.17 in) D, 770 g (27.2 oz) | |||||
Included accessories |
Clip type lead L2107 ×1, Temperature sensor Z2002 ×1, LR6 Alkaline battery ×8, Instruction manual ×1, USB Cable(A-to-mini B type) ×1, Strap ×1, Spare fuse ×1 |
同时,配备USB通信接口,便于将数据导出并进行进一步分析。在设计上,HIOKI RM3548充分考虑了现场操作的需求,采用轻巧紧凑的设计,内置大容量电池,提供了长达10小时的连续使用时间,即使在无外部电源的情况下也能保持高效稳定的工作状态。而且,坚固耐用的外壳材料保证了仪器在各种严苛环境下的耐久性和稳定性,真正实现了在精密实验室和复杂现场环境之间的无缝切换。HIOKI RM3548以其出色的测量性能、丰富的功能配置、优秀的便携性和经久耐用的品质,成功树立起了一款精密测试工具的典范,在电力电子、汽车制造、航空航天等诸多行业中好用的,为确保各类电气设备的安全运行和精准维护提供了强有力的技术保障。