簡介
MPK257
- 數位式直接讀值與顯示可達4½位數。
- 解析度0.1μΩ；電阻讀值達2000Ω；測試電流達10A。
- 精度：±(0.10% rdg. + 3 ULSD*)，*最小有效位數的單位。
- 採用Kelvin型4線式測量法。
- 配備USB介面與T-Logger資料管理軟體、內建記憶體及感熱式印表機。
- 可從Android行動裝置進行遠端控制。
- 使用可充電磷酸鋰鐵電池（LFP）電源操作。
- 應用：為可攜式微處理器控制型數位超低阻歐姆計，輕量強固、耐撞擊、IP54防護等級（關閉上蓋時），可使用測試電流1mA～10A精準測量開關與斷路器接點、變壓器與馬達繞組、導線與電纜樣品及匯流排內的接頭…等的電阻。
- 微處理器控制型。
- 字母數字顯示幕。
- 數位式直接讀值與顯示可達4½位數。
- 解析度：0.1μΩ。
- 電阻讀值達：2000Ω。
- 測試電流達：10A。
- 精度：±(0.10% rdg. + 3 ULSD*)，*最小有效位數的單位。
- 採用Kelvin型4線式測量法。
- 配備USB介面。
- 內建記憶體。
- 內建感熱式印表機。
- 配備T-Logger資料管理軟體。
- 可從Android行動裝置進行遠端控制。
- 使用可充電磷酸鋰鐵電池（LFP）電源操作。
- IP54防護等級。
- 應用：為可攜式微處理器控制型數位超低阻歐姆計，可使用測試電流1mA～10A精準測量開關與斷路器接點、變壓器與馬達繞組、導線與電纜樣品及匯流排內的接頭…等的電阻。
- 系統簡介：
- 採用Kelvin型4端點式測量法，可避免由測試導線及其接點電阻造成的測量誤差。
- 在字母數字顯示幕上顯示電阻讀值，可達4½位數解析度。
- 能以低至0.1µΩ的解析度，測量電阻達2000Ω。
- 先進的信號放大系統，能確保測量精度 - 無偏移及具有長期穩定性。
- 配備USB介面，可將測量值下載到電腦，以便之後進行分析。
- 開路輸出電壓高達10V，依選擇的測試電流而定，當測量高電感性元件時（尤其是變壓器繞組），可縮短測試電流的穩定時間，而測量電路可有效保護防備由那些電感產生的電壓峰值。
- 操作極為簡單，只須連接導線►將儀器開機►選擇測試電流►按下開始按鈕►經過幾秒後（依元件的電感而定），螢幕上便顯示直接讀值與測量單位指示（Ω、mΩ或µΩ），如有必要，也將顯示例如低電池電量、過範圍…等輔助訊息給操作員。
- 儀器裝置在強固塑膠殼內，帶有鉸接上蓋及攜行把手。
- 可攜式、輕量強固、耐撞擊，適用於現場及惡劣的天氣條件下，能在實驗室與現場提供極為可靠和精準的測量結果。
- 測試電流：
- 1mA、10mA、100mA、1A、5A、10A。
- 每個電流可從0到100%連續調整。
- 電阻範圍：
- 0～200mΩ@10A。
- 0～1000mΩ@5A。
- 0～200mΩ@1A。
- 0～2000mΩ@100mA。
- 0～20Ω@10mA。
- 0～2000Ω@1mA。
- 解析度：0.1μΩ@10A。
- 輸出電壓：開路電壓達10VDC＠1A。
- 測量原理：4端點，Kelvin型。
- 基本精度：±（0.10% rdg.+3 ULSD*），*最小有效位數的單位。
- 先進功能：
- 數位式直接讀取超低電阻值及顯示在螢幕上達4½位數。
- 超快速及精準的測量。
- T-LOGGER軟體：操作簡便，以表格形式呈現測試結果，有自動報告產生器功能，可附加操作員的註釋。
- 內建感熱式印表機：可列印經過的時間、電流及測量值。
- 資料輸出：USB介面。
- 防護等級：IP54，關閉上蓋時。
- 安全等級：符合IEC 61010-1標準的要求。
- 電源：內部可充電磷酸鋰鐵電池（LFP）12V，6000mAh或100-240V主要電源。
- 電池充電器：適用於100-240V~主要電源或輔助的12V電源。
- 體積/重量：378x308x175mm/6.5kg。
- 詳細規格、配件、軟體及選購，歡迎洽詢。
- Microprocessor controlled
- Alphanumerical display
- Direct reading (up to 4½ digits)
- Resolution: 0.1 μΩ
- Resistance reading: up to 2000 Ω
- Up to 10 A test current.
- Accuracy: ±(0.10% of reading + 3 ULSD*), *Units of the Least Significant Digit.
- Kelvin-type (4-wires) measurement
- USB interface
- Built-in memory
- Built-in printer
- Software for data management
- Remote control by an Android device
- Powered by rechargeable LFP battery
- IP54 protection
- Applications: The MPK257 digital very low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using test currents from 1 mA up to 10 A.
- Description:
- It uses the Kelvin-type, four-terminals measurement principle, thus eliminating errors caused by lead and contact resistances.
- Resistance readings are shown in the alphanumeric display with up to a 4½ digit-resolution. It allows to measure resistances of up to 2000 Ω, with a resolution down to 0.1 µΩ.
- Measurements accuracy is guaranteed by the state-of-the-art system for signal-amplification, offset-free and with longterm stability.
- The equipment has a USB interface that allows to download the measured values to a computer for their later analysis.
- The open circuit output voltage is of up to 10 V, depending on the selected test current, reducing the stabilization time for the test current when highly inductive elements (specially transformers windings) are measured. The measurement circuit has an effective protection against voltage peaks originated by those inductances.
- Operation is very simple: Just connect the leads, switch-on the equipment, select the test current and press the start button. After a few seconds (depending on inductance of the element), direct reading appears on the display with the measure unit indication (Ω, mΩ or µΩ). If it is necessary, the display will show messages to help the operator (Low battery, Overrange, etc).
- The equipment is housed in a rugged plastic case with a hinged lid and carrying handle.
- It is a portable, strong, impact resistant and lightweight equipment, suitable to be used in outdoors and under severe weather conditions. It supplies very reliable and accurate measurements both in laboratory and out in the field.
- TEST CURRENTS:
- 1 mA, 10 mA, 100 mA, 1 A, 5A, 10 A.
- Each current may be continuously adjustable from 0 to 100%.
- RESISTANCE RANGES:
- 0-200 mΩ @ 10 A.
- 0-1000 mΩ @ 5 A.
- 0-200 mΩ @ 1 A.
- 0-2000 mΩ @ 100 mA.
- 0-20 Ω @ 10 mA.
- 0-2000 Ω @ 1 mA.
- RESOLUTION: 0.1 μΩ@10 A.
- OUTPUT VOLTAGE: Up to 10 Vdc (open circuit) @ 1 A
- MEASUREMENT PRINCIPLE: Four-terminal, Kelvin-type.
- BASIC ACCURACY:
- ±(0.10% of reading + 3 ULSD*).
*Units of the Least Significant Digit.
- ±(0.10% of reading + 3 ULSD*).
- ADVANCED FEATURES:
- Digital direct reading of very low resistances in the alphanumerical display, with up to 4½ digits.
- Very fast and accurate measurements.
- T-LOGGER SOFTWARE: Friendly, easy to use software. Tests are represented in tabular views. With automatic report generator, including the operator's commentaries.
- BUILT-IN PRINTER: Prints elapsed time, current and measured value
- DATA OUTPUT: USB
- ENVIRONMENTAL PROTECTION: IP54 (with closed lid).
- SAFETY CLASS: Meets the requirements of IEC 61010-1.
- POWER SUPPLY: Rechargeable LFP battery 12 V, 6000 mAh or 100 - 240 V~ mains supply.
- BATTERY CHARGER: For 100 - 240 V~ mains supply or auxiliary 12 V supply input.
- EQUIPMENT WEIGHT: Approx. 6.5 kg.
- DIMENSIONS: 378 x 308 x 175 mm
- Please feel free to contact for detailed specifications, accessories, software and options.