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MT-1232
3-3/4 Autorange Digital Multimeter

User’s Manual

2

st

Edition

,

2012

©2012 Copyright by Prokit’s Industries Co., Ltd.

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Summary of Contents for mt-1232

Page 1: ...MT 1232 3 3 4 Autorange Digital Multimeter User s Manual 2 st Edition 2012 2012 Copyright by Prokit s Industries Co Ltd ...

Page 2: ...merits of clear reading stable performance and high reliability It could be used to measure DC voltage AC voltage DC current AC current resistance capacity frequency duty cycle diode and make on and off test Meanwhile it is available for unit symbol display automatic manual range switching automatic power off and alarm function The multimeter due to its complete functions performs with high measur...

Page 3: ...C voltage above 25V current above 10mA AC power line with inductive load or power line during electric fluctuation is measured please beware of electric shock 2 Prior to measurement check if the measurement function switch is at the correct position Check if the test lead is contacted reliably connected correctly and grounded well etc in order to avoid electric shock 3 Only if the meter is used wi...

Page 4: ... ground 7 Don t store and use it in the high temperature high humidity inflammable and strong magnetic field environment 8 It may damage to the meter and endanger the operator s safety if the voltage value beyond the permitted ultimate voltage value is measured The ultimate voltage value permitted for measurement is marked on the instrument panel and never measure the value exceeding the standard ...

Page 5: ...attery immediately to ensure the measurement precision 13 It is not allowed to insert the test lead into the current terminal to measure voltage 14 Please don t change the circuits of the meter freely for fear that the meter will be damaged and the safety endangered 15 Description of Safety Symbols Warning DCV High Voltage Danger ACV DCA Ground ACA Double Insulation In accordance with the instruct...

Page 6: ...f Capacitance function could be conducted by pressing this button 3 3 D Data hold Backlight Press the left side of this button the reading is locked press it again the left side the lock will release and back to normal measurement status Press the right side of this button over 3 seconds the backlight will come on press this button the right side again the backlight turns off 3 4 S Function Switch...

Page 7: ...the auto power on mode working mode Properties General Feature 1 1 Display LCD 1 2 Max Display 3999 3 3 4 counts automatic polarity display and unit display 1 3 Measuring Method Dual integral A D converter 1 4 Sampling Range Approx 3 times sec 1 5 Over Range Indication Display OL 1 6 Low Battery Indication symbol appears 1 7 Operation Environment 0 40 C Relative Humidity 80 1 8 Storage Environment...

Page 8: ...e testing point The voltage and polarity of the point where the red pen is contacted will be displayed on the screen Caution 1 Don t measure voltage over 600V Otherwise there is a danger of the meter being damaged 2 When measuring high voltage special attention should be given to personal safety and avoid your body getting in touch with high voltage circuit Range Accuracy Resolution 400mV 100uV 4V...

Page 9: ...oint where the red test lead is contacted will be displayed on the screen Caution 1 Don t measure voltage over 600V Otherwise the meter will be damaged 2 When measuring high voltage special attention should be given to personal safety and avoid your body getting in touch with high voltage circuit Range Accuracy Resolution 4V 1mV 40V 10mV 400V 0 8 6d 100mV 600V 1 0 6d 1V Input Impedance 10MΩ Overlo...

Page 10: ...e red pen is contacted will be displayed on the screen simultaneously Caution 1 If OL is displayed on LCD it indicates the tested current value has exceeded the present range limit please select higher range to complete the measurement 2 The Max input value is 400mA or 10A Depending on the terminal where the red test lead is contacted Range Accuracy Resolution 400uA 0 1uA 4000uA 1uA 40mA 10uA 400m...

Page 11: ...sly Caution 1 If OL is displayed on LCD it indicates the tested current value has exceeded the present range limit please select higher range to complete the measurement 2 The Max input value is 400mA or 10A Depending on the terminal where the red test lead is contacted The overrated current will lead to fuse melt or even damage the meter Range Accuracy Resolution 400uA 0 1uA 4000uA 1uA 40mA 10uA ...

Page 12: ...e the measurement When measuring the Resistor higher than 1MΩ the instrument will take several seconds to make the reading stable It is normal when measuring the high resistor 2 When the input terminal is open circuit it will display OL 3 When measuring in line resistor be sure that the power is off and all capacitors are discharged completely Range Accuracy Resolution 400Ω 0 8 5d 0 1Ω 4kΩ 1Ω 40kΩ...

Page 13: ...est lead to the diode positive polarity OL symbol will be displayed on the screen 5 The complete diode testing includes forward and backward measurement if the result does not meet the above it means the diode is bad 6 Press S button to select the Continuity measurement mode 7 Connect the test leads to two points of the tested circuit If the built in buzzer sounds the resistance between the two po...

Page 14: ...ement could be conducted by pressing REL button Caution 1 Fully discharge the tested capacitor in case it damages the meter 2 When measuring in line capacitor the power should be turned off and all capacitors should be discharged completely 3 It takes about 30 seconds to input stable reading at 100uF Range Range Accuracy Resolution 4nF 5 0 9d 1 pF 40nF 10pF 400nF 100pF 4μF 1nF 40μF 3 5 8d 10nF 100...

Page 15: ... It is recommended to test weak signals by shielded cable under noisy circumstances 3 Select ACV when testing the frequency of high voltage Then press Hz DUTY button to enter frequency measurement status 4 Don t input voltage of over 250V DC or AC peak value in case it damages the meter Range Accuracy Resolution 1Hz 0 001Hz 10Hz 0 01Hz 100Hz 0 1Hz 1kHz 1Hz 10kHz 10Hz 100kHz 100Hz 1MHz 1kHz 10MHz 0...

Page 16: ...you can read temperature from the screen and the data is in Centigrade Caution 1 When the input terminal is open circuit it will display the normal temperature 2 Don t change the temperature probe at random or the value accuracy could not be guaranteed 3 Don t measure voltage at temperature range Range Accuracy Resolution 20 1000 C 400 C 1 0 5d 400 C 1 5 15d 1 C Sensor K Type Thermocouple Nickel c...

Page 17: ...battery shall be replaced The steps are as follows 5 1 Loosen the screw on the back cover that secures the battery case and remove the battery case 5 2 Remove the 1 5V batteries and replace them with two new ones Although a 1 5V battery of any standard can be used but in order to lengthen the operation life alkaline batteries should be used 5 3 Mount the battery case back and tighten the screw Pre...

Page 18: ...ce battery Big display error Replace battery This Instruction is subject to change without any further notice The content of this Instruction is considered correct and in case readers find any errors and missing parts please contact the manufacturer The Company shall not be held liable for any accidents and hazards resulted from the mal operations by the user The function elaborated by this Instru...

Page 19: ... 概述 MT 1232 是一款性能穩定高可靠性 3 3 4 位元數字多用錶儀錶採用 15mm 字高 LCD 顯示器讀數清晰可用來測量直流電壓交流電壓直流電流交流電流電阻溫度電容頻率占空比二極體及通斷測試同時還設計有單位符號顯示自動手動量程轉換自動斷電及報警功能該錶功能齊全測量準確度高使用方便是實驗室工廠無線電愛好者及家庭的理想工具二開箱檢查打開包裝箱取出儀錶仔細檢查以下附件是否缺少或損壞如有缺少或損壞請立即與經銷商聯繫數字多用錶一台使用說明書一本錶棒一付溫度探頭 K 型熱電偶一隻防震套裝於電錶上一個 ...

Page 20: ...格的錶棒線 4 不要使用其他未經確認或未認可的保險管來更換儀錶內部的保險管只能換上同樣型號或相同規格的保險管更換前錶棒必須離開被測量點確保輸入端無任何信號 5 不要使用其他未經確認的電池來更換儀錶內的電池只能換上同型號或相同電氣規格的電池更換前錶棒必須離開被測量點確保輸入端無任何信號 6 在進行電氣測量時身體切勿直接接觸大地不要接觸可能存在地電勢裸露的金屬端子輸出口引線夾等通常使用乾燥的衣服膠鞋膠墊以及其他絕緣材料保持你的身體與大地絕緣 7 不要在高溫高濕易燃易爆和強磁場環境中存放及使用 8 測量超過儀錶所允許的極限電壓值有可能損壞儀錶和危及操作人員的安全在儀錶面板上標有儀錶所允許測量的極限電壓值切勿測量超過此標準的安全請勿輸入超過規定的極限值以防電擊和損壞儀錶 9 當錶棒線插入電流插座時切勿測量任何電壓以免損壞儀錶和危及...

Page 21: ...量程選擇開關 12 當 LCD 顯示時請及時更換電池以確保測量精度 13 不允許在電流檔去測量電壓 14 請不要隨意改變儀錶線路以免損壞儀錶和危及安全 15 安全符號說明警告直流電壓高壓危險交流電壓直流電流大地交流電流雙重絕緣符合歐洲工會指令低電壓指示保險絲四儀錶面板及按鍵功能說明 1 儀錶型號 2 液晶顯示器顯示儀錶測量的數值及單位 3 功能按鍵說明 3 1 Hz 頻率占空比在頻率檔觸發此鍵可選擇頻率或占空比測量模式交直流電壓或交直流電流檔位觸發此鍵可進行電壓頻率占空比或電流頻率占空比測量模式 20 ...

Page 22: ... 4 旋鈕開關用於改變測量功能及量程 5 輸入插孔 5 1 電流電壓二極體電阻電容頻率蜂鳴器溫度的輸入插孔 5 2 10A 輸入插孔 5 3 電壓二極體電阻電容頻率蜂鳴器溫度及小於 400mA 電流的輸入插孔五其他功能自動關機在測量過程中功能按鍵和撥盤開關在 15 分鐘內均無動作時儀錶會自動關機休眠狀態以節約電能在自動關機狀態下按動功能鍵或是轉動撥盤開關儀錶會自動開機工作模式六特性 1 一般特性 1 1 顯示方式液晶顯示 1 2 最大顯示 3999 3 3 4 位元自動極性和單位顯示 1 3 測量方式雙積分式 A D 轉換 1 4 轉換速率約每秒 3 次 1 5 過量程顯示顯示 OL 1 6 低電壓顯示符號出現 1 7 工作環境 0 40 相對濕度 80 21 ...

Page 23: ...付 K 型熱電偶一支 2 技術特性 2 1 準確度 a 讀數字數保證準確度環境溫度 23 5 C 相對濕度 75 校準保證期從出廠日起為一年 2 2 性能功能有無直流電壓 DCV 有交流電壓 ACV 有直流電流 DCA 有交流電流 ACA 有電阻 Ω 有電容 CAP 有頻率 Hz 有二極體通斷有溫度 C 有 2 3 1 直流電壓 DCV A 將功能開關轉至檔 B 儀錶初始為自動量程狀態顯示 AUTO 符號 C 將測試錶棒接觸測試點紅錶棒所接的該點電壓與極性顯示在螢幕上注意 1 測量電壓切勿超過 600V 超過則有損壞儀錶電路的危險 2 當測量高電壓電路時千萬注意避免人體觸及高壓電路注意人身安全 22 ...

Page 24: ... 2 交流電壓 ACV 1 將黑錶棒插入 COM 插孔紅錶棒插入插孔 2 將功能開關轉至檔按動 SELECT 鍵選擇 AC 測量方式 3 儀錶初始為自動量程狀態顯示 AUTO 符號 4 將測試錶棒接觸測試點紅錶棒接的該點電壓顯示在螢幕上注意 1 測量電壓切勿超過 600V 如超過有損壞儀錶電路的危險 2 當測量高電壓電路時千萬注意避免人體觸及高壓電路注意人身安全量程準確度分辨力 4V 1mV 40V 10mV 400V 0 8 6d 100mV 600V 1 0 6d 1V 輸入阻抗大於 10MΩ 超載保護 600V 直流或 600V 交流峰值頻率回應 50 200 Hz 顯示平均值響應以正弦波有效值校準 23 ...

Page 25: ...轉至較高一檔 2 最大輸入電流為 400mA 或者 10A 視紅錶棒插入位置而定超過額定的電流會將保險絲熔斷甚至損壞儀錶量程準確度分辨力 400uA 0 1uA 4000uA 1uA 40mA 10uA 400mA 1 0 10d 100uA 10A 1 2 10d 10mA 最大測量壓降滿量程 mA 為 0 4V A 為 100mV 最大輸入電流 10A 不超過 15 秒超載保護 0 4A 250V 自恢復保險絲 10A 250V 保險管 2 3 4 交流電流 ACA 1 將黑錶棒插入 COM 插孔紅錶棒插入插孔最大為 400mA 或插入 10A 插孔中最大為 10A 2 將功能開關轉至電流檔按動 SELECT 鍵選擇 AC 測量方式然後將儀錶的錶棒串入被測電路中被測電流值及紅色錶棒點的電流極性將同時顯示在螢幕上 24 ...

Page 26: ...A 2 5 15d 10mA 最大測量壓降滿量程 mA 為 0 4V A 為 100mV 最大輸入電流 10A 不超過 15 秒超載保護 0 4A 250V 自恢復保險絲 10A 250V 保險管頻率回應 10A 量程為 50 200 Hz 2 3 5 電阻 Ω 1 將黑錶棒插入 COM 插孔紅錶棒插入插孔 A 將量程開關轉至 Ω 檔兩錶棒跨接在被測電阻上 B 如果測量阻值小的電阻應先將錶棒短路測得引線電阻然後在實測中減去注意 1 如 LCD 顯示 OL 表明已超過量程範圍需將量程開關轉至較高一檔當測量電阻超過 1MΩ 以上時讀數幾秒之後才能穩定這在測量高阻時是正常的 2 當輸入端開路時則顯示 OL 3 測量線上電阻時要確認被測電路所有電源已關閉及所有電容都已完全放電才可進行 25 ...

Page 27: ...0Ω 量程時應先將錶棒短路測得引線電阻然後在實測中減去 2 3 6 二極體及通斷測試 A 將黑錶棒插入 COM 插孔紅錶棒入插孔注意紅錶棒極性為極 B 將量程開關轉至檔按動 SELECT 鍵選擇二極體測量方式 C 正向測量將紅錶棒接到被測二極體的正極黑錶棒接到被測二極體的負極顯示器即顯示二極體正向壓降的近似值 D 反向測量將紅錶棒接到被測二極體的負極黑錶棒接到被測二極體的正極顯示器顯示 OL 字樣 E 完整的二極體測試包括正反向測量如果測試結果與上述不符說明二極體是壞的 F 按動 S 鍵選擇通斷測量方式 G 將錶棒連接到待測線路的兩點如果內置蜂鳴器發聲則兩點之間電阻值低於約 50Ω 則內置蜂鳴器發聲 26 ...

Page 28: ...禁止輸入電壓值 2 3 7 電容 F 1 將功能開關轉至檔 2 將黑錶棒插入 COM 插孔紅錶棒插入插孔 3 用測試錶棒注意紅錶棒極性為正極將被測電容接入 COM 輸入端螢幕將顯示電容容量按動 REL 鍵可進行相對值測量注意 1 對被測電容應完全放電以防止損壞儀錶 2 測量線上電容時需將線路電源關斷並將電容充分放電 3 100uF 量程輸入讀數穩定時間約 30 秒量程準確度分辨力 4nF 5 0 9d 1 pF 40nF 10pF 400nF 100pF 4μF 1nF 40μF 3 5 8d 10nF 100μF 5 0 8d 100nF 超載保護 250V 直流或交流峰值 27 ...

Page 29: ...的頻率時請選擇 ACV 檔再按 Hz DUTY 按鍵進入頻率測量狀態 4 禁止輸入超過 250V 直流或交流峰值的電壓以免損壞儀錶程量準確度分辨力 1Hz 0 001Hz 10Hz 0 01Hz 100Hz 0 1Hz 1kHz 1Hz 10kHz 10Hz 100kHz 100Hz 1MHz 1kHz 10MHz 0 5 10d 10kHz 0 1 99 9 僅供參考 0 1V 輸入靈敏度 0 7V 有效值超載保護 250V 直流或交流峰值 2 3 9 溫度 C 1 將功能開關轉至檔 2 將熱電偶感測器的冷端自由端負極黑色插頭插入 COM 插孔正極插入插孔中熱電偶的工作端測溫端置於待測物上面或內部可直接從螢幕上讀取溫度值讀數為攝氏度 28 ...

Page 30: ... 型熱電偶鎳鉻鎳硅香蕉插頭警告為了安全在此量程禁止輸入電壓值七儀錶保養該儀錶是一台精密儀器使用者不要隨意更改電路 1 請注意防水防塵防摔 2 不宜在高溫高濕易燃易爆和強磁場的環境下存放使用儀錶 3 請使用濕布和溫和的清潔劑清潔儀錶外表不要使用研磨劑及酒精等烈性溶劑 4 如果長時間不使用應取出電池防止電池漏液腐蝕儀錶 5 注意 1 5V 電池使用情況當螢幕顯示出符號時應更換電池步驟如下 5 1 卸下固定電池盒的螺絲取出電池盒 5 2 取出 1 5V 電池換上兩個新的電池雖然任何標準 1 5V 電池都可使用但為加長使用時間最好使用鹼性電池 5 3 裝回電池盒鎖緊螺絲 29 ...

Page 31: ...或後蓋沒有上緊時請不要使用此錶 4 在更換電池或保險絲前請將測試錶棒測試點移開並關機八故障排除如果您的儀錶不能正常工作下面的方法可以幫助您快速解決一般問題如果故障仍排除不了請與維修中心或經銷商聯繫故障現象檢查部位及方法沒顯示電源未接通換電池符號出現換電池顯示誤差大換電池本說明書如有改變恕不另行通知本說明書的內容被認為是正確的若用戶發現有錯誤遺漏等請與生產廠家聯繫本公司不承擔由於用戶錯誤操作所引起的事故和危害本說明書所講述的功能不作為將產品用做特殊用途的理由 30 ...

Page 32: ... 2012 Prokit s Industries Co LTD All rights reserved 2012001 T 31 ...

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