SAFETY INFORMATION This multimeter has been designed according to IEC 1010 concerning electronic measuring instruments with an overvoltage category (C

Size: px

Start display at page:

Download "SAFETY INFORMATION This multimeter has been designed according to IEC 1010 concerning electronic measuring instruments with an overvoltage category (C"

尚吴
7 years ago
Views:

1 OPERATOR S INSTRUCTION MANUAL NAS NBS NCS NDS For NCS DIGITAL MULTIMETER

2 SAFETY INFORMATION This multimeter has been designed according to IEC 1010 concerning electronic measuring instruments with an overvoltage category (CAT II) and pollution 2. Follow all safety and operating instructions to ensure that the meter is used safely and is kept in good operating condition. Full compliance with safety standards can be guaranteed only with test leads supplied. If necessary, they must be replaced with the type specified in this manual. SAFETY SYMBOLS Important safety information, refer to the operating manual. Dangerous voltage may be present. Earth ground. Double insulation (Protection class II). 200mA/250V Fuse must be replaced with rating specified in the manual. MAINTENANCE Before opening the case, always disconnect test leads from all energized circuits. For continue protection against fire; replace fuse only with the specified voltage and current ratings: F 200mA/250V(Quick Acting) Never use the meter unless the back cover is in place and fastened completely. Do not use abrasives or solvents on the meter. To clean it using a damp cloth and mild detergent only.

3 DURING USE Never exceed the protection limit values indicated in specifications for each range of measurement. When the meter is linked to measurement circuit, do not touch unused terminals. Never use the meter to measure voltages that might exceed 600V above earth ground in category II installations. When the value scale to be measured is unknown beforehand, set the range selector at the highest position. Before rotating the range selector to change functions, disconnect test leads from the circuit under test. When carrying out measurements on TV or switching power circuits always remember that there may be high amplitude voltages pulses at test points, which can damage the meter. Always is careful when working with voltages above 60V dc or 30V ac rms. Keep fingers behind the probe barriers while measuring. Before attempting to insert transistors for testing, always be sure that test leads have been disconnected from any measurement circuits. Components should not be connected to the hfe socket when making voltage measurements with test leads. Never perform resistance measurements on live circuits. GENERAL DESCRIPTION The meter is a handheld 3 1/2 digital multimeter for measuring DC and AC voltage, DC current, Resistance, Diode, Transistor and Continuity Test with battery operated. The Back light of display is optional.

4 Function NAS NBS NCS NDS AC Voltage V~ DC Voltage V DC Current A Resistance Ω Diode Transistor hfe test Continuity Temperature ºC HOLD BACK LIGHT

5 FRONT PANEL DESCRIPTION Display 1 3 1/2 digit, 7 segment, 15mm high LCD. 2 Back light (option) When this button is pushed, the Back light of display is on. After about 5 seconds, the Back light is self-off. The Back light is on again, just push this button once. 3 Rotary switch This switch is used to select functions and desired ranges as well as to turn on/off the meter. 4 Hold button When this button is pushed, the display will keep the last reading and " " symbol will appear on the LCD until pushing it again. 5 "10A" jack Plug in connector for red test lead for 10A measurement. "COM" jack 6 Plug in connector for black (negative) test lead. "VΩmA" jack 7 Plug in connector for red (positive) test lead for voltage, resistance and current (except 10A) measurements. SPECIFICATIONS Accuracy is specified for a period of one year after calibration and at 18 to 28 C(64 F to 82 F) with relative humidity to 80%. GENERAL Maximum voltage between terminals and earth ground : CAT II 600V Fuse protection : F 200mA/250V Power : 9V battery, NEDA 1604 or 6F22 Display : LCD, 1999 counts, updates 2-3/sec. Measuring method : Dual-slope integration A/D converter Overrange Indication : Only figure "1" on the display Polarity indication : "-" displayed for negative polarity Operating Environment : 0 to 40ºC Storage temperature : -10ºC to 50ºC. Low battery indication : " " appears on the display Size : 138mm 69mm 31mm Weight : Approx.170g. 5

6 DC VOLTAGE Range Resolution Accuracy 200mV 100µV ±0.5% of rdg ± 2 digits 2V 1mV ±0.5% of rdg ± 2 digits 20V 10mV ±0.5% of rdg ± 2 digits 200V 100mV ±0.5% of rdg ± 2 digits 600V 1V ±0.8% of rdg ± 2 digits Overload Protection: 250V rms. For 200mV range and 600V dc or rms. ac for other ranges. DC CURRENT Range Resolution Accuracy 200μA 0.1µA ±1% of rdg ± 2 digits 2mA 1µA ±1% of rdg ± 2 digits 20mA 10µA ±1% of rdg ± 2 digits 200mA 100µA ±1.5% of rdg ± 2 digits 10A 10mA ±3% of rdg ± 2 digits Overload Protection: F 200mA/250V fuse. (10A range unfused) * NCS DC 200µA Excepted AC VOLTAGE Range Resolution Accuracy 200V 100mV ±1.2% of rdg ± 10 digits 2600V 1V ±1.2% of rdg ± 10 digits Overload Protection: 600V dc or rms. ac for all ranges. Frequency range: 40Hz to 400Hz. Response: Average responding, calibrated in rms. of a sine wave. DIODE & CONTINUITY(* NAS Excepted) Range Description If continuity exists (about less than 1.5kΩ), built-in buzzer will sound. Show the approx. forward voltage drop of the diode. 6

7 Overload Protection: 250V dc or rms. ac. RESISTANCE Range Resolution Accuracy 200Ω 0.1Ω ±0.8% of rdg ± 3 digits 2kΩ 1Ω ±0.8% of rdg ± 2 digits 20kΩ 10Ω ±0.8% of rdg ± 2 digits 200kΩ 100Ω ±0.8% of rdg ± 2 digits 2MΩ 1kΩ ±1.0% of rdg ± 2 digits Maximum Open Circuit Voltage: 3.2V Overload Protection: 250V dc or rms. ac for all ranges. TRANSISTOR hfe TEST (0-1000) Range Test Range Test Current Test Voltage NPN & PNP Ib=10μA Vce=3V TEMPERATURE (For NCS only) Range Resolution Test Range Accuracy ºC 1ºC -20ºC to 0ºC -0ºC to 400ºC 400ºC to 1000ºC TEMPERATURE (For NCS only) ±1.0% of rdg ± 2 digits ±1.0% of rdg ± 3 digits ±2.0% of rdg Range Resolution Test Range Accuracy ºF 1ºF -4ºF to 32ºF 32ºF to 752ºF 752ºF to 1832ºF ±10% of rdg ± 2 digits ±1.0% of rdg ± 3 digits ±2.0% of rdg OPERATING INSTRUCTIONS DC VOLTAGE MEASURE- MENT 1. Connect the red test lead to the "V.Ω.mA" jack and the black lead to the "COM" jack. 2. Set rotary switch at desired DCV position. If the voltage to be measured is not known beforehand, set range switch at the highest range position and then reduce it until satisfactory resolution is obtained. 3. Connect test leads across the source or load being measured. 4. Read voltage value on the LCD display along with the polarity of the red lead connection. 7

8 DC CURRENT MEASUREMENT 1. Connect the red test lead to the "V.Ω.mA" jack and the black test lead to "COM" jack. (For measurements between 200mA and 10A, remove red lead to "10A" jack.) 2. Set the rotary switch at desired DCA position. 3. Open the circuit in which the current is to be measured, and connect test leads in series with the circuit. 4. Read current value on LCD display along with the polarity of red lead connection. AC VOLTAGE MEASUREMENT 1. Connect the red test lead to "V.Ω. ma" jack and the black test lead to the "COM" jack. 2. Set the rotary switch at desired ACV position. 3. Connect test leads across the source or load being measured. 4. Read voltage value on the LCD display. RESISTANCE MEASUREMENT 1. Connect the red test lead to "V. Ω. ma" jack and black test lead to the "COM" jack. (The polarity of red lead is positive "+".) 2. Set the rotary switch at desired "Ω" range position. 3. Connect test leads across the resistor to be measured and read LCD display. 4. If the resistance being measured is connected to a circuit turn off power and discharge all capacitors before applying test probes. DIODE TEST 1. Connect the red test lead to "V.Ω.mA" jack and the black test lead to the "COM" jack (The polarity of red lead is positive "+".). 2. Set the rotary switch at " " position. 3. Connect the red test lead to the anode of the diode to be tested and the black test lead to the cathode of the diode. The approx. forward voltage drop of the diode will be displayed. If the connection is reversed, only figure "1" will be shown. 8

9 TRANSISTOR TEST 1. Set the rotary switch at "hfe" position. 2. Determine whether the transistor under testing is NPN or PNP and locate the emitter base and collector leads. Insert the leads into proper holes of the hfe socket on the front panel. 3. Read the approximate hfe value at the test condition of base current 10μA and Vce 3V. NOTE: To avoid electrical shock, remove test leads from measurement circuits before testing a transistor. AUDIBLE CONTINUITY TEST 1. Connect red test lead to "V.Ω.mA", black test lead to COM. 2. Set range switch to " " position. 3. Connect test leads to two points of circuit to be tested. If continuity exists, built-in buzzer will sound. MEASURING TEMPERATURE 1. If the meter is the ºC function, set the rotary switch at ºC. Position. If it is the ºF function, set the rotary switch at ºF Position. The LCD display will show the current environment temperature. 2. Connect the red lead of "K" type thermocouple into the "V.Ω.mA" jack and the black lead of "K" type thermocouple into the "COM" jack. 3. Read temperature value on the LCD display. WARNING To avoid electric shock, be sure the thermocouple has been removed before changing to another function measurement.

10 BATTERY & FUSE REPLACEMENT If " " appears on display, it indicates that the battery should be replaced. Fuse rarely need replacement and blow almost always as a result of operator s error. To replace battery & fuse (200mA/250V) remove the 2 screws in the bottom of the case. Simply remove the old, and replace with a new one. Be careful to observe battery polarity. WARNING Before attempting to open the case, always be sure that test leads have been disconnected from measurement circuits. Close case and tighten screws completely before using the meter to avoid electrical shock hazard. ACCESSORIES Operator s instruction manual Set of test leads Gift box 9 volt battery. NEDA F22 006P type "K" type thermocouple(for NCS only) Holster (option) 10

11 簡介本系列儀錶是一種性能穩定高可靠性和防跌落性能的小型掌上型 3 1/2 位元數位多用錶儀錶採用字高 15mm 的液晶顯示器, 讀數清晰整機電路設計以大型積體電路雙積分 A/D 轉換器為核心, 並配以超載保護電路, 使之成為一台性能優越小巧的工具儀錶此系列儀錶可用來測量直流和交流電壓直流電流電阻二極體電晶體溫度和電路通斷測試本系列各型號的測量功能 : 功能 NAS NBS NCS NDS 交流電壓測量 V~ 直流電壓測量 V 直流電流測量 A 電阻測量 Ω 二極體測試電晶體測試 hfe 通斷測試溫度測試 ºC 資料保持 HOLD 背光 BACK LIGHT /2 位字高 15mm 7 段 LCD 顯示器 2. 背光 BACK LIGHT 按下 BACK LIGHT 鍵, 背光點亮, 約 5 秒後自動熄滅再要點亮, 需再按一次 3. 功能量程開關用於選擇各功能和量程 4. 資料保持開關 HOLD 在測量中按 HOLD 鍵, 儀錶顯示器上將保持測量的最後讀數並且 LCD 上顯示 " " 符號 ; 釋放資料保持開關, 儀錶即恢復正常測量狀態 5. 10A 插孔 6. COM 插孔 11

12 7. VΩmA 插孔安全資訊 NAS NBS NCS 和 NDS 數位多用錶是根據 IEC V(CAT II) 和污染等級 2 設計的為保證儀錶能準確安全使用, 請認真閱讀使用說明書安全標誌 200mA/250V 重要的安全資訊, 應參閱說明書高壓危險地雙重絕緣 (II 類安全設備 ) 保險絲必須按說明書指定的規格更換使用注意事項儀錶只能和所配備的測試錶棒一起使用才符合安全標準的要求如測試錶棒破損需要更換, 必須換上同型號或相同電氣規格的測試錶棒切勿超過每個量程所規定的輸入極限值當儀錶正在測量時, 不要觸及沒有使用的輸入端在不能確定被測量的大小範圍時, 將功能量程開關置於最大量程位置在功能量程開關轉換之前, 應使測試錶棒與被測電路處於開路狀態進行線上電阻測量前, 應關斷電路中所有電源並將所有電容器放電測量高於 60V 直流 30V 交流以上的電壓時, 務必小心, 切記手指不要超過測試錶棒擋手部份測量電視機或開關電源時, 應注意電路中可能存在會損壞儀表的脈衝在測試電晶體前, 必須確保測試錶棒沒有連接到任何被測試電路 12

13 在測試錶棒測量電壓前, 必須確保電子元件連接在電晶體測試座上維護在打開後蓋之前, 測試錶棒應斷開測量電路為保護儀錶的內部線路, 更換保險絲必須使用相同的規格, 本系列儀表使用的保險絲規格為 :F 200mA/250V( 快速 ) 在後蓋未蓋妥, 螺絲未擰緊前, 切勿使用儀錶清潔儀錶只能使用溼布和少量清滌劑, 切忌用化學溶劑擦表殼如觀察到有任何異常, 該儀錶應立即停止使用並送維修技術指標準確度 :±% 讀數字數, 保證期 1 年環境溫度 :18 C 至 28 C 環境溼度 :80% 一般特性 : 電壓輸入端和地之間最大電壓 :CAT II 600V 保險管電源最大顯示值 :1999 過量程指示 :"1" :F 200mA/250V 極性顯示 : 負極性顯示 "-" 工作溫度 :0 到 40ºC 儲存溫度 :10ºC 到 50ºC :9V 電池,NEDA 1604 或 6F22 低電壓指示 : 顯示器顯示 " " 外型尺寸重量 :138mm 69mm 31mm : 約 170g 13

14 直流電壓測量量程分辨力準確度 200mV 100µV ±0.5% 讀數 ± 2 字 2V 1mV ±0.5% 讀數 ± 2 字 20V 10mV ±0.5% 讀數 ± 2 字 200V 100mV ±0.5% 讀數 ± 2 字 600V 1V ±0.8% 讀數 ± 2 字超載保護 :200mV 量程 250V dc 或 rms; 其餘量程 600V dc 或 rms 直流電流測量量程分辨力準確度 200μA 0.1µA ±1% 讀數 ± 2 字 2mA 1µA ±1% 讀數 ± 2 字 20mA 10µA ±1% 讀數 ± 2 字 200mA 100µA ±1.5% 讀數 ± 2 字 10A 10mA ±3% 讀數 ± 2 字超載保護 :F 200mV/250V 保險絲 (10A 量程無保險絲 ) NCS 無 200µA 檔交流電壓測量量程分辨力準確度 200V 100mV ±1.2% 讀數 ± 10 字 600V 1V ±1.2% 讀數 ± 10 字超載保護 :600V dc 或 rms 頻率範圍 :40Hz 到 400Hz 顯示 : 平均值 ( 正弦波有效值 ) 14

15 電阻量程分辨力準確度 200Ω 0.1Ω ±0.8% 讀數 ± 3 字 2kΩ 1Ω ±0.8% 讀數 ± 2 字 20kΩ 10Ω ±0.8% 讀數 ± 2 字 200kΩ 100Ω ±0.8% 讀數 ± 2 字 2MΩ 1kΩ ±1.0% 讀數 ± 2 字最大開路電壓 :3.2V 超載保護 :250V dc 或 rms 二極體和電路通斷測試 ( NAS 無此功能 ) 量程說明導通電阻小於 1.5kΩ, 機內蜂鳴器響顯示近似二極體正向電壓值超載保護 :250V dc 或 rms. ac 電晶體 hfe 測試 (0-1000) 量程測試範圍測試電流測試電壓 NPN & PNP Ib=10μA Vce=3V 溫度測試 ( 僅 NCS 有此功能 ) 量程分辨力測量準確度 ºC 1ºC -20ºC 到 0ºC -0ºC 到 400ºC 400ºC 到 1000ºC ±1.0% 量程 ± 2 字 ±1.0% 量程 ± 3 字 ±2.0% 量程 15

16 使用方法操作前注意事項 : 1. 接通電源, 先檢查 9V 電池, 如果電池電壓不足," " 將顯示在顯示器上, 這時則需要更換電池如果顯示器上沒有顯示 " ", 則按以下步驟操作 2. 測試錶棒插孔旁邊的 " " 符號, 表示輸入電壓或電流不應超過指示值, 這是為了保護內部線路免受損傷 3. 測試之前, 功能量程開關應置於您所需要的量程直流電壓測量 1. 將紅色錶棒插入 "VΩmA" 插孔, 黑色錶棒插入 "COM" 插孔 2. 將功能量程開關置於 V 量程範圍, 並將測試錶棒連接到待測試電源或負載上, 紅色錶棒所接端的極性將同時顯示於顯示器上注意 1. 如果被測量電壓範圍事先不知道, 請將功能量程開關置於最大量程, 然後逐漸降低直至取得滿意的分辨力 2. 如果顯示器只顯示 "1", 這表示已經過量程, 功能量程開關應置於更高量程 3. 不要輸入高於 600V 的電壓, 顯示更高電壓是可能的, 但有損壞儀錶內部線路的危險 4. 在測量高壓電時, 要特別注意避免觸電 16

17 直流電流測量 1. 將黑色錶棒插入 COM 插孔, 當被測電流不超過 200mA 時, 紅色色錶棒插入 "V..mA" 插孔如果被測電流在 200mA 和 10A 之間, 則將紅色錶棒插入 10A 插孔 2. 將功能量程開關置於所需要的 A 量程位置, 並將測試錶棒串連接入到待測負載上, 電流值顯示器紅色錶棒連接的極性注意 1. 如果被測電流範圍事先不知道, 請將功能量程開關置於最大量程, 然後逐漸降低直至取得滿意的分辨力 2. 如果顯示器只顯示 "1", 這表示已經過量程, 功能量程開關應置於更高量程 3. 測試錶棒插孔旁邊的 " " 符號, 表示最大輸入電流是 200mA 或 10A 取決於所使用的插孔, 過量的電流將燒壞保險絲 10A 量程無保險絲保護交流電壓測量 1. 將紅色錶棒插入 "VΩmA" 插孔, 黑色錶棒插入 "COM" 插孔 2. 將功能量程開關置於 V~ 量程範圍, 並將測試錶棒連接到待測試電源或負載上注意 : 參看直流電壓測量注意事項和 4 電阻測量 1. 將黑色錶棒插入 COM 插孔, 紅色錶棒插入 V/Ω/Hz 插孔 2. 將功能量程開關置於所需要的 Ω 量程位置, 將錶棒並接到被測電阻上, 從顯示器上讀取測量結果 17

18 注意 1. 如果被電阻值超過所選擇量程的最大值, 將顯示過量程 "1", 此時應選擇更高的量程在測量以上的電阻時, 可能需要幾秒鐘後讀數才會穩定這對於高阻值測量是正常的 2. 當無輸入時, 例如開路情況, 儀錶顯示 "1" 3. 檢查線上電阻時, 必須先將被測線路內所有電源關斷, 並將所有電容器充分放電二極體測試 1. 將黑色錶棒插入 COM 插孔, 紅色錶棒插入 "V.Ω.mA" 此時紅色錶棒極性為 "+" 2. 將功能量程開關置於量程位置, 將紅色錶棒接到被測二極體的陽極, 黑色錶棒接到二極體的陰性, 由顯示器上讀取被測二極體的近似正向壓降值電路通斷測試將黑色錶棒插入 COM 插孔, 紅色錶棒插入 "V.Ω.mA" 將功能量程開關置於量程 " " 位置, 將錶棒並接到被測電路的兩點如果該兩點間的電阻低於約 1.5KΩ, 內置蜂鳴器會發出響聲指示該兩點間導通電晶體測試 1. 將功能量程開關置於 hfe 位置 2. 判斷被測電晶體是 PNP 還是 NPN 型, 將基極發射極和集電極分別插入儀錶面板上電晶體測試插座的相應孔內 3. 由顯示器上讀取 hfe 的近似值測試條件為 :1b=10µA Vce=3V 18

19 溫度測試將功能量程開關置於 ºC 位置, 將熱電偶感測器的黑插頭插入 COM 端, 紅插頭插入 "V..mA" 熱電偶的工作端 ( 測溫端 ) 置於待測物上面或內部, 可直接從顯示器上讀取溫度值, 讀數為攝氏 ºC 功能量程開關置於 ºC 位置, 熱電偶感測器開路時, 儀錶顯示為室溫更換電池和保險絲 1. 在正常情況下, 一般不需要更換保險絲更換保險絲及電源需要拔去錶棒和關斷電源後進行旋出後蓋上的兩個螺絲即可打開表殼 2. 本錶使用的保險絲規格為 :200mA/250V 快速熔斷型更換保險絲必須使用相同的規格 3. 本錶使用的電池為 :9V NEDA 1604 或 6F22 更換電池需用同一型號電池 4. 更換電池或保險絲後, 必須上緊後蓋才能使用儀錶警告為避免電擊, 在打開後蓋之前, 應檢查確信測試錶棒已斷開測量電路在使用儀表之前, 應檢查確信後蓋已上緊附件使用說明書測試棒包裝盒一本一附一個 9V 電池 NEDA F22 一個 ( 已裝入錶內 ) "K" 型熱電偶感測器橡皮套 ( 選購件 ) 一個 ( 僅 NCS) 19

20 Prokit s Industries Co., Ltd. 5F, No.7, Lane 130, Ming-Chung Rd., Hsin-Tien City, Taipei Hsien, Taiwan, R.O.C. Post code: Tel: (Rep.) Fax: [email protected]

Rotary Switch Catalogue

Rotary Switch Catalogue Rotary Switches RS300/400/500 Series Outline Our RS series embody the manufacturing history of our company. All series are sturdy and solid with high dependability designed for control units of plants,