特點

體積小巧，測量精準：使用方便的量程結構，測量范圍0.0μΩ～3.5000MΩ，最高分辨率0.1μΩ，基本精度0.02%，最大測量電流1A， 測量大型變壓器·馬達，電源設備內的導通電阻測量大型變壓器或馬達的電阻，電源設備內的配線，匯流排·連接部分的電阻等，為了更精確的測量低電阻，可使用1A的大電流以0.1μΩ的分辨率進行測量。汽車的接地線*或飛機機體焊接/鉚接部分的導通確認使用測量電流300mA(300mΩ量程)，能確認汽車的接地連接或飛機機身的熔接/鉚接部分。規定道路運輸車輛的安保基準的明細告示(【2009.10.24】附屬110(對電氣汽車以及電氣混合動力車的高壓，保護乘客安全的相關技術標準)。Compact size, accurate measurement: easy to use range structure, measurement range 0.0μΩ ~ 3.5000MΩ, the highest resolution of 0.1μΩ, the basic accuracy of 0.02%, the maximum measurement current of 1A, Measurement of large transformers - motors, power supply equipment within the on-resistance Measurement of the resistance of large transformers or motors, power supply equipment, power supply equipment within the wiring, busbar - connecting the part of the resistance, and so on, to more For more accurate measurement of low resistance, a high current of 1A can be used to measure with a resolution of 0.1μΩ. Confirmation of the conductivity of grounding wires in automobiles* or welded/riveted parts of aircraft fuselages Using a measurement current of 300mA (300mΩ range), the grounding connection of automobiles or welded/riveted parts of aircraft fuselages can be confirmed. Detailed notification of security standards for road transportation vehicles ([2009.10.24] Subsidiary 110 (Technical standards related to high voltage and passenger safety protection for electric vehicles and electric hybrid vehicles).

輕松便攜，易用易懂：維護保養/大型設備的檢查等最適用的外形，可使用標配掛繩，套在脖子上將電阻計懸掛于身體前方，雙手持探頭進行測量。電源為8節5號干電池，普通狀態測量可使用約10小時。(根據測量條件不同使用時間有所變化),自動保持，自動存儲只要探頭接觸被測物，就能自動保持/記錄，配備自動存儲功能。無需按鈕操作，等數值穩定后，會自動記錄。觸手可及的比較器指示燈比較器指示燈安裝于探頭附近，如此一來，即便在測量中也能對結果判斷一目了然。OFF SET電壓補償(OVC)功能不同金屬的連接部分會產生熱電動勢。當熱電動勢過大時，會引起測量誤差。OFF SET電壓補償功能(OVC)可減輕熱電動勢的影響，更高精度的進行測量。長度換算功能設置每1m的電阻值時，電阻值可換算為長度。此功能在線纜的庫存管理，PCB的焊盤長度推測時十分便利。無需調零無需調零即可達到規定精度。接通電源，即可測量。耐壓性能大幅提高過電壓最大可保護到 70V。可防止直接接入充電中的電荷或受電感的逆變功率影響所引起的故障。通過USB連接取得所記錄的測量數據通過USB線纜與電腦連接，讀取主機中保存的測量數據。RM3548支持USB大容量存儲級別(讀取專用)，無需在電腦端另外安裝驅動軟件。溫度上升試驗中便利的溫度換算功能和間隔測量：從所測量到的電阻值和周圍溫度，可換算出上升溫度(Δt)并進行顯示。特別是在電機馬達或變壓器評估時，需要確認通電后的最高上升溫度。使用間隔測量功能，可從測量開始時以指定的間隔進行測量。因為主機具備記錄功能，對于推算最高溫度較為容易。溫度換算功能，無法與溫度補償功能、長度換算功能同時使用。在電機馬達，變壓器完全與室溫融合的情況下，測量通電前的電阻值(R1)，以及周圍溫度(t1)，將數值輸入主機將測試線從被測物上取下通電OFF后，再給被測物接上測試線，使用間隔存儲功能測量并記錄每隔一段時間的溫度上升值(Δt1～Δtn)。結合測得溫度數據(Δt1～Δtn)、推算最高溫度上升值(Δt)。測量精度：電阻測量精度；精度保證條件溫濕度范圍23℃±5℃，80%rh以下(不凝結)；0~18，28~40℃時，需要加算溫度系數±(測量精度的1/10)/℃，RM3548精度：±(%rdg.＋%f.s.)，(f.s.＝30,000dgt.來計算，0.010%f.s.＝3dgt.)，溫度測量精度，溫度傳感器Z2002(用于RM3548)。溫度傳感器Z2002與RM3548組合精度。Easily portable, easy to use and understand: the most suitable shape for maintenance/inspection of large equipment, etc. You can use the standard lanyard, put it around your neck to hang the resistance meter in front of your body, and hold the probe with both hands to take measurements. The power supply is 8x5 dry cell batteries, which can be used for about 10 hours of measurement under normal conditions. (According to the measurement conditions of different use time varies), automatic hold, automatic storage as long as the probe contact with the measured object, can be automatically held/recorded, equipped with automatic storage function. No need for button operation, it will automatically record when the value stabilizes. Comparator indicator within easy reachThe comparator indicator is mounted near the probe, so you can judge the result at a glance, even in the middle of a measurement.OFF SET Voltage Compensation (OVC) FunctionThe thermal electromotive force is generated in the part where different metals are connected. The OFF SET Voltage Compensation (OVC) function mitigates the effects of the thermo-electric potential and enables more accurate measurements. LENGTH CONVERSION FUNCTION When setting the resistance value per 1m, the resistance value can be converted to length. This function is convenient for cable inventory management and PCB pad length estimation. No Zeroing Required The accuracy of the measurement can be achieved without zeroing. Measurement can be performed by turning on the power. The overvoltage resistance has been greatly improved, and overvoltage protection up to 70 V is available to prevent malfunctions caused by direct access to charging charges or by the inductive inverter power. Measurement data recorded via USB connectionConnect to a PC via USB cable to read measurement data stored in the host computer.The RM3548 supports USB mass storage level (for reading), eliminating the need to install separate driver software on the PC. Convenient Temperature Conversion Function and Interval Measurement in Temperature Rise Test: From the measured resistance value and surrounding temperature, the rise temperature (Δt) can be converted and displayed. Especially when evaluating electric motors or transformers, it is necessary to confirm the maximum rise temperature after energization. Using the interval measurement function, measurements can be taken at specified intervals from the start of the measurement. Since the main unit has a recording function, it is easy to deduce the maximum temperature. The temperature conversion function cannot be used in conjunction with the temperature compensation function and the length conversion function. With the motor and transformer fully integrated into the room temperature, measure the resistance value (R1) before energizing the motor and transformer, and the ambient temperature (t1), input the values into the main unit, remove the test lead from the DUT, energize the DUT, connect the test lead to the DUT, and then use the interval memory function to measure and record the temperature rise (Δt1 to Δtn) at intervals. Combine the measured temperature data (Δt1 to Δtn) with the maximum temperature rise value (Δt). Measurement accuracy: resistance measurement accuracy; accuracy guarantee conditions temperature and humidity range of 23 ℃ ± 5 ℃, 80% rh or less (non-condensing); 0 ~ 18, 28 ~ 40 ℃, you need to add the temperature coefficient ± (1/10 of the measurement accuracy) / ℃, RM3548 accuracy: ± (% rdg. + % f.s.), (f.s. = 30,000dgt. to calculate, 0.010% f .s. = 3 dgt.), temperature measurement accuracy, temperature sensor Z2002 (for RM3548). Combined accuracy of temperature sensor Z2002 and RM3548.

電阻測量量程	3 mΩ (最大顯示3.5000 mΩ, 分辨率0.1 μΩ)～3 MΩ量程 (最大顯示3.5000 MΩ, 分辨率100 Ω), 10檔切換 基本精度: ±0.020 % rdg. ±0.007 % f.s.
測量電流	[3mΩ量程時] DC 1A～[3MΩ量程時] DC 500 nA
開路端口電壓	最大DC 5.5 V
溫度測量	-10.0～99.9℃, 基本精度: ±0.50℃ (和溫度探頭Z2002的組合精度)
測量速度	固定
顯示更新率	電阻測量無OVC時：約100ms，帶OVC時：約230ms
功能	溫度補償功能，溫度換算功能，偏移電壓補償功能（OVC），比較器（ABS/REF%），長度換算，判斷音設置，自動保持，省電功能（APS）
存儲功能	存儲個數：（手動/自動）最多1000個，（間隔）最多6000個 間隔：0.2～10.0s (0.2s步進) 存儲數據的獲取：顯示，U盤（CSV，TXT文件）
其他功能	比較值，面板保存/讀取，USB通訊（通過連接計算機，RM3548的內存相當于固定在計算機中的大容量存儲器等級）
電源	5號堿性干電池（LR6）×8,連續使用時間：10h（在我司設置的條件下） 額定功率: 5 VA
體積及重量	192W × 121H × 55Dmm, 770g
附件	夾型測試線L2107×1, 溫度探頭Z2002×1,5號堿性干電池（LR6）×8，使用說明書×1, USB連接線(A – 迷你B 型) ×1, 背帶×1,保險絲×1

Product Parameters

Resistance Measurement Range	3 mΩ (Maximum display 3.5000 mΩ, resolution 0.1 μΩ) to 3 MΩ range (Maximum display 3.5000 MΩ, resolution 100 Ω), 10-step switching, basic accuracy: ±0.020 % rdg. ±0.007 % f.s.
Measurement Current	[3mΩ range] DC 1A to [3MΩ range] DC 500 nA
Open Port Voltage	DC 5.5 V max.
Temperature Measurement	-10.0 to 99.9°C, basic accuracy: ±0.50°C (combined accuracy with Temperature Probe Z2002)
Measurement speed	Fixed
Display update rate	Resistance measurement without OVC: approx. 100ms, with OVC: approx. 230ms
Functions	Temperature compensation function, Temperature conversion function, Offset voltage compensation function (OVC), Comparator (ABS/REF%), Length conversion, Judgment tone setting, Auto hold, Power saving function (APS)
Memory function	Number of memories: (Manual/Auto) up to 1000, (Interval) up to 6000, Interval: 0.2 to 10.0s (0.2s step), Access to stored data: Display, USB flash drive (CSV, TXT file)
Other Functions	Comparison value, panel save/read, USB communication (By connecting to a computer, the RM3548's memory is equivalent to a mass storage class fixed in the computer)
Power supply	Alkaline dry batteries No. 5 (LR6) × 8, Continuous use time: 10h (under the conditions set by our company) Rated power: 5 VA
Volume and Weight	192W × 121H × 55Dmm, 770g
Accessories	Clip-on test lead L2107 × 1, Temperature probe Z2002 × 1, Alkaline dry cell battery No. 5 (LR6) × 8, Instruction manual × 1, USB cable (A - Mini B type) × 1, Carrying strap × 1, Fuse × 1

HIOKI RM3548毫歐表微電阻測里應用：大型線圈(馬達、變壓器、線圈)，線圈(馬達、螺線管、扼流線、變壓器)電源觸點(接點、線束、電器、開關)普通的電阻測量(保險絲、電阻器、加熱器、電線、熔接處、導電橡膠、涂料)汽車的接地線或飛機機體焊接/接部分的導通確認使用微電阻計RM3548可根據微小電阻值檢查螺帽的接觸狀態和焊接部分的狀態焊接工程中《配線+接觸)的電阻測量，等電位連接的電阻管理。HIOKI RM3548 milliohm meter micro resistance measurement applications: large coils (motor, transformer, coil), coil (motor, solenoid, choke wire, transformer) power contacts (contacts, wiring harnesses, electrical appliances, switches) general resistance measurement (fuses, resistors, heaters, wires, fusion joints, conductive rubber, paints) automotive grounding wire or aircraft fuselage soldering / connecting part of the conductive confirmation of the use of the Micro Resistance Meter RM3548 can be based on the micro-resistance value to check the state of contact with the screw cap and the state of soldered parts of the state of the soldering project, the welding project, the "Wiring + Contact" resistance measurement, isotropic potential connection resistance management.
深圳銀飛有售微電阻計HIOKI RM3548可測量μΩ到MΩ的高精度