Pro's Kit MT-3209 User manual

MT-3209
3 5/6 AC/DC Digital Clamp Meter
User’s Manual
1st Edition,
© 2021 Copyright by Prokit’s Industries Co., Ltd.

1
1. Safety Information
Warnings
Special attention shall be paid when using the meter, improper use might cause an
electric shock or damage the meter. General safety procedures shall be followed during
the use and safety measuring methods regulated by the instruction manual shall be
completely respected.
To fully make use of the functions of the meter and ensure safe operation, please
carefully read and follow the use method of this manual.
The meter meets IEC-61010-1, IEC-61010-2-030, IEC-61010-2-032）Safety
Requirements for Electronic Measuring Instruments of the secondary pollution.
over-voltage standard is CATⅡ600V.
Please follow the safe operation guidance and ensure to use the meter in safe.
1.1 Preparations
When use the meter, users must comply with the standard safety rules:
- General protection against electric shock
- Prevent misuse of the meter
After receiving the meter, check if it has been damaged during the delivery.
After been kept and delivered in shoddy condition, check and confirm if the meter is
damaged or not.
The test lead must be in good condition. Before use, check the test lead to see if
any damage causes to the insulation or if the metal wire of the cable is bare.
1.2 Marks
Note (important security information, see the Instruction Manual)
It can be used on hazardous live conductors.
Double insulation protection (Category II)
Grounding
1.3 Maintenance
Please do not attempt to open the bottom case to adjust or repair the meter; such
operation could only be performed by technicians fully aware of the meter and the
risk of electric shock.
Before opening the meter case or battery cover at the end, the test lead should be
removed from the circuit being measured.
To avoid electric shock that might be caused by erroneous readings, when the
meter displays “ ” symbol, the battery should be replaced immediately.

2
Use a damp cloth and mild detergent to clean the meter; do not use abrasive
cleaning agents or solvents.
Power supply of the meter should be turned off when not in use, range switch to the
OFF position.
If the meter is not used for a long time, batteries should be removed to prevent
damage to the meter.
2. Descriptions
2.1 Part Name
①Non-contact voltage detection sensing area
②Non-contact voltage warning LED
③Rotary switch
④Function selection key
⑤Data hold key
⑥Display screen
⑦Input socket
⑧Frequency key
⑨Back light & Flash light key
⑩Trigger
⑪Current clamp head: Used for measuring current
2.2 LCD Display Unit
3
④
③
①
②
⑤
⑥
⑦
⑧
⑨
⑩
⑪

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DC AC
DC, AC voltage or Ampere
Connected / Disconnect indication
Low battery
Automatic shutdown indication
Automatic range measurement mode
Data hold status
Hz, KHz
Hertz, Kilohertz
%
Duty cycle
Diode test
Ω, kΩ, MΩ
Ohm, Kilohm, Megohm (resistance)
V
Volt (voltage),
A
Ampere (current)
mF, μF, nF
Farad, the unit of capacitance.
℃/℉
Temperature ℃or ℉
NCV
Non-contact voltage detection
LoZ
Low impedance voltage measurement
VFC
Variable-frequency drive voltage or current
measurement
3. Specifications
The meter should specify one year as a cycle to re-calibrate in the conditions of 18℃ ～
28℃ and relative humidity less than 75%.
3.1 Overview
Automatically select measurement function and range.
Overload protection for the whole measurement range.
Maximum allowable voltage between the measuring terminal and the
Earth: 600V DC or 600V AC
Work height: maximum 2000m
Display: LCD
Maximum display value: 6000 digits.
Max open jaw: 30mm.
Polar indication: Automatically indicates ‘-’ means negative polarity.
Over range indication: ‘0.L’ or ‘-0.L’.

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Sampling time: About 3 times/s
Automatic power off time: 15 minutes
Power supply: 1.5V AAA battery ×2
Battery low voltage indication: LCD display symbol.
Temperature coefficient: < 0.1×Accuracy/℃
Working temperature: 18℃ ～ 28℃
Storage temperature: -10℃ ～ 50℃
3.2 Technical Index
AC Current
Measurement range
Resolution
Accuracy
60A
0.01A
（2.5% reading + 5 digits）
600A
0.1A
Frequency response: 40Hz-1KHz True-RMS
Overload protection: 250V DC or AC (valid value)
DC Current
Measurement range
Resolution
Accuracy
60A
0.01A
（3.0% reading + 15 digits）
600A
0.1A
（3.0% reading + 5 digits）
Overload protection: 250V DC or AC (valid value)
DC Voltage
Measurement range
Resolution
Accuracy
600mV
0.1mV
（0.5% reading +5 digits）
6V
0.001V
60V
0.01V
600V
0.1V
（0.8% reading +5 digits）
Input impedance: 10M
Maximum input voltage: 600V DC
7

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AC Voltage
Measurement range
Resolution
Accuracy
6V
0.001V
（1.0% reading +5 digits）
60V
0.01V
600V
0.1V
（1.2% reading +10 digits）
Input impedance: 10M
Maximum input voltage: 600V AC (valid value)
Frequency response: 40Hz-1kHz True-RMS
LoZ V DC & AC Voltage
Measurement range
Resolution
Accuracy
DC 600V
0.1V
（2.0% reading +3 digits）
AC 600V
0.1V
（2.0% reading +3 digits）
Input impedance: 1M
Maximum input voltage: 600V DC or AC (valid value).
Frequency response: ACV 40Hz-1KHz; sine wave average response.
Frequency
Pass V Position:
Measurement range
Resolution
Accuracy
600Hz
1Hz
（1.5% reading + 5 digits）
6KHz
0.001KHz
60KHz
0.01KHz
600KHz
0.1KHz
Input signal range: 0.6V~600V
Overload protection: 600V DC or AC (valid value)
Clamp Head Frequency Measurement (Pass A Position):
Measurement range
Resolution
Accuracy
600Hz
1Hz
（1.5% reading + 5 digits）
Input signal range: 6A~600A AC current (valid value)

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Resistance
Measurement range
Resolution
Accuracy
600
0.1
（0.8% reading +5digits）
6k
0.001k
60k
0.01k
600k
0.1k
6M
0.001M
60M
0.01M
（1.2% reading +5digits）
Overload protection: 250V DC or AC (valid value)
Capacitance
Measuring range
Resolution
Accuracy
6nF
0.001nF
±(5.0%reading +15 digits)
60nF
0.01nF
± (4.0%reading +5 digits)
600nF
0.1nF
6μF
0.001μF
60μF
0.01μF
600μF
0.1μF
6mF
0.001mF
100mF
0.01mF
± (5.0%reading +5 digits)
Overload protection: 250V DC or AC (valid value)
Diode & Continuity
Functions
Testing conditions
Diode test
Forward DC current: approximately 1.2mA;
Open-circuit voltage: approximately 3.2V.
The display unit shows the approximate value of the diode's
forward voltage drop.
The buzzer beeps when the resistance is less than 30
Overload protection: 250V DC or AC (valid value)
Temperature
Measuring Range
Resolution
Accuracy
-20℃～1000℃
1℃
±（1.0% readings +3 digits）
-4℉～1832℉
1℉
±（1.0% readings +3 digits）
Overload protection: 250V DC or AC (valid value)
9

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4. Operation Guide
4.1 Measurement Preparations
Turn the transfer switch to the desired measurement position, turn on the power. If the
battery voltage is low (of about ≤2.4V), the LCD will show “”symbol, then the
battery shall be replaced.
4.2 Readings Hold
During the measuring process, if the readings are required to hold, press “Hold “key ,the
display value will be locked, press “Hold “key again to cancel readings hold.
4.3 Back Light & Flash Light
1）In the process of measurement, if the ambient light is too dim, causing reading
difficulties, press “BL / FL “key to open Back Light and it will automatically off after
about 30 seconds, or press “BL / FL “key again to close Black Light.
2）Press “BL / FL “key for about 2s, to turn on the flash light function and the
backlight at the same time. Short press the “BL / FL “key again to turn off the
function. It turns off automatically with no operation for 30 seconds, the Back
Light will be turned off.
4.4 Auto Power Off
1）If after 15 minutes when the meter is on without any operation, it will go into
hibernation and automatically shut down to save power. Before the meter off, there
will be sound “di-di-di”of the buzzer to remind.
2）Press any key after auto power off to wake the meter into working status.
4.5 AC or DC Current Measurement
1）Turn the rotary switch to the appropriate position 60A or 600A.
2）Press “FUNC” to choose the ACA or DCA.
3）Hold the trigger, open the clamp head and clamp one cable of the measured circuit.
4）When measured signal >0.05A, the LCD of the meter displays the measured current
value.

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Note:
Clamp two lines of the measured circuit or more at the same time will not obtain
correct measurement results.
To obtain accurate readings, try to enable the measured cable in the middle position
of the current clamp.
If you haven't measured yet, there is a display number at the DCA position on the
LCD screen; press “Hz/Zero”key to clear.
If you measure the AC current from the VFC (Variable-frequency converter) power,
press “FUNC /VFC”key for about 2 seconds to turn on the VFC current
measurement.
4.6 Non-contact Voltage Detection (NCV)
1）Turn the transfer switch to the NCV position,
2）Put the clamp NCV sensor square close to the measured
cable, the meter could detect if the measured cable is >90V
AC voltage or not. When the meter detects AC voltage, the
meter buzzer alarms and the NCV LED flashes.
Note:
Even there is no alarm indication, the voltage might still exist. Do not judge if there
exist voltage or not in the cable relying on non-contact voltage detector. The detection
operation might be affected by various factors, such as the socket design, different
insulation thickness types, so on.
In NCV detection mode, the meter will not measure the voltage, resistance and
current at the same time.

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4.7 DC Voltage or AC Voltage Measurement
To avoid any electric shock and/or damage to the meter, do not attempt a
voltage measurement if the voltage (valid value) is over 600V DC or AC
current.
To avoid any electric shock and/or damage to the meter, don't attempt to
impose between any public terminals and ground any voltage whose valid
value is over 600V for DC or AC current.
The meter provides DC voltage measuring ranges as follows: 600mV, 6V, 60V and
600V. AC voltage measuring ranges: 6V, 60V and 600V.
Measurement DC of voltage or AC voltage
1）Turn the rotary switch to the position “V”and press “FUNC” to choose DCV or
ACV.
2）Connect the test leads to COM input socket and V/input socket respectively.
3）Use another two ends of the test leads to measure the voltage of the circuit to be
measured. (In parallel connection with the circuit to be measured.)
4）Read the measured voltage value on LCD screen. When DC voltage measurement
is attempted, the display unit will show the voltage polarity of the circuit connected to
the lead-shaped meter in red.
Notes:
Within the measuring range of DC or AC voltage, even if there is no input or no
connection to the test lead, the meter will display some information. In this situation,
press short circuit “V” and “COM” terminal to reset the meter to zero.
The value of the AC voltage measured with this meter is True RMS (root mean
square). These measurements are accurate for sine wave and other waves (without
DC offset), square wave, triangular wave and step wave.
If you measure the AC voltage from the VFC (Variable-frequency converter) power,
press the “FUNC /VFC”key for about 2s to turn on the VFC voltage measurement.
4.8 LoZ Volts (DC or AC voltage) Measurement
Low impedance voltage measurement function to eliminate false voltage. This meter
automatic identified of DC voltage and AC voltage.
The meter provides DC or AC voltage measuring ranges 600V.
1）Turn the rotary switch to the LoZ V.
2）Connect the test leads to COM input socket and V/input socket respectively.
3）Use another two ends of the test lead to measure the voltage of the circuit to be
measured. (In parallel connection with the circuit to be measured.)
4）Read the measured voltage value on LCD screen. When DC voltage measurement
is attempted, the display unit will show the voltage polarity of the circuit connected to
the lead-shaped meter in red.

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4.9 Frequency Measurement
Pass V position:
1）Turn the switch to “ V” and press “FUNC” to choose ACV, and then press “Hz” to
choose Hz.
2）Connect the black test lead to the COM jack and the red lead to the V/jack.
3）Measure the frequency value of the circuit under test with the other two ends of the
test leads and “Hz” the measured value on LCD screen.
Pass AC A position（The signal current must be ≥6A）:
1）Turn the rotary switch to the appropriate position 60A or 600A, then press the “Hz”
key to choose Hz .
2）Hold the trigger, open the clamp head and clamp one cable of the measured
circuit.
3）When measured signal ≥6A AC current, the LCD of the meter displays the
measured Hz value.
4.10 Resistance Measurement
Ohm is the unit of electric resistance ().
The measuring ranges of electric resistance of this meter are 600, 6k, 60k, 600k,
6Mand 60M,
Measurement of electric resistance
1）Turn the rotary switch to the position, press “FUNC” to choose .
2）Connect the test leads to COM input socket and V/input socket respectively.
3）Use another two ends of the test lead to measure the electric resistance of the circuit
to be measured.
4）Read the measured electric resistance value on LCD screen.
Notes:
The measured value of the electric resistance of the circuit differs a bit from the rated
value of the electric resistance.
To ensure measurement accuracy, in attempting a low resistance measurement, first
put two lead-shaped meters in short circuit and capture the resistance reading of
these short circuits. Then subtract the aforesaid reading from the measured
resistance.
When the meter is in open circuit, the display unit will show “O.L”that indicates the
measured value is over the measuring range.
4.11 Diode test
1）Turn the rotary switch to the position and press “FUNC” to choose .
2）Connect the test leads to COM input socket and V/input socket respectively.

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3）Connect the test leads to the positive and negative poles of the diode to be tested
respectively.
4）The meter displays the forward bias value of the diode to be tested. If the polarity of
the test lead is reversed, the meter will display “O.L”.
4.12 Beep Continuity Test
1）Turn the rotary switch to the position and press “FUNC” to choose .
2）Connect the test leads in black and in red to COM input socket and V/input socket
respectively.
3）Use another two ends of the test lead to measure the resistance of the circuit to be
measured. If the measured distance is less than 30, the beeper will sound
continuously, and the LED will be on.
4.13 Capacitance Measurement
The measuring ranges for the capacitance of this meter are 6nF/60nF/600nF/6μF
/60μF/600μF/6mF/100mF.
Measurement of capacitance:
1）Turn the rotary switch to the position, press “FUNC” to choose .
2）Connect the test leads to COM input socket and V/input socket respectively.
3）Use another two ends of the test lead to measure the capacitance of the capacitor to
be measured, and capture the measured value on LCD screen.
Note:
The measurement of a large capacitance requires a given period of stabilization of
reading.
To avoid damage to the meter, the measurement of a capacitor with polarities
requires much attention to its polarity.
4.14 Temperature Measurement
1）Turn the rotary switch to the ℃/℉, press the “FUNC”to choose ℃or ℉.
2）Insert the red plug of the thermocouple into the end of V/℃, and insert the black
plug of the thermocouple into COM socket.
3）Place the temperature probe on the object being measured, and temperature the
measured value on LCD screen.

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5. Maintenance
5.1 Replace Battery
Warnings
Before opening the battery cover of the meter, the test lead shall be moved
from the measuring circuit first to prevent the risk of electric shock.
1）If “ ” symbol appears, it means the battery shall be replaced.
2）Loosen the screws of the battery cover to move it away.
3）Replace the battery with new one.
4）Put back the battery cover.
Note:
Do not violate the battery polarity.
5.2 Replace Test Leads
Warnings
When replacing the test lead, the new ones shall be of the same or in equal
level. The test lead shall be in good condition, test lead level: 1000V 10A.
If the insulation layer of the test lead is damaged, such as the metal wire of the cable is
exposed, then it shall be replaced.
6. Accessories
1.Operation Manual
X 1
3. K-Type thermocouple
X 1
2.Test lead
X 1 pair

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MT-3209 鉗形電錶使用說明書
1. 聲明
根據國際版權法，未經允許和書面同意，不得以任何形式（包括存儲和檢索或翻譯為其他
國家或地區語言）複製本說明書的任何內容。本說明書在將來的版本中如有更改，恕不另
行通知。
警告
“警告”標誌表示會對用戶造成危險的狀況和操作。它要求在執行此操作時必須注意，如
果不正確執此行操作或不遵守此操作步驟，則可能導致人身傷害或傷亡。在不滿足這些條
件或沒有完全理解的情況下，請勿繼續執行警告標誌所指示的任何操作。
使用儀錶前，請仔細閱讀說明書並注意有關安全警告資訊。
2. 安全須知
本儀錶符合 IEC-61010-1，IEC-61010-2-030，IEC-61010-2-032 電子測量儀器安全儀
器要求過電壓標準 600V CATⅡ和污染等級 2的安全標準。請遵循本說明書使用儀錶，否
則儀錶所提供的保護功能可能會降低或無效。
3. 安全操作規範
警告
為了避免可能的觸電或人身傷害，請切實遵守以下的規範：
使用儀錶前，請先閱讀“安全須知”。並嚴格按照規定使用儀錶，否則儀錶所提供的
保護能力可能會降低或無效。
使用儀錶前先檢查外殼。檢查是否存在裂紋或塑膠件缺損。仔細檢查輸入端子附近的
絕緣體。
若儀錶工作不正常或損壞，請勿使用。
禁止觸摸電壓超過 30V 真有效值交流電、42 V 交流電峰值或 60V 直流電的帶電體。
應按照指定的測量類別、電壓或電流額定值使用儀錶。
當顯示電池電量不足指示時請及時更換電池，以防測量錯誤。
請遵守當地和國家的安全規範。穿戴個人防護用品（經認可的橡膠手套、面具和阻燃
衣物等），以防危險帶電導體外露時遭受電擊和電弧而受傷。
輸入端子間或每個端子與接地點之間施加的電壓不能超過儀錶規定額定值。
測量一個已知電壓，以確定儀錶操作是否正常。
測量時，必須使用正確的輸入端子、功能檔位和量程檔位。
請勿在爆炸性氣體、蒸汽周圍或在潮濕環境中使用儀錶。
請勿使用已損壞的錶棒。檢查錶棒的絕緣層是否損壞，是否有外露金屬或有磨損跡象。
檢查錶棒的通斷性。
測量時，請先連接零線或地線，再連接火線；斷開時，請先切斷火線，再斷開零線和
地線。
測量時，請將手指握在錶棒護指裝置的後面。
打開儀錶後蓋之前，請先斷開錶棒與被測量物件。
請勿在超出儀錶、錶棒或附件中額定值最低的單個元件的測量類別 (CAT) 額定值的
環境中使用儀錶。

14
安全符號:
儀錶錶體及使用說明書中使用的符號：
警告，重要的安全標誌，使用前應參閱使用說明書。錯誤使用可能致
設備或它的部件的損壞
雙重絕緣保護
接地
4. 通用技術指標
全量程過載保護
使用環境條件:
IEC-61010-1，IEC-61010-2-030，IEC-61010-2-032 600V CATⅡ，污染等級 2
海拔高度 < 2000 m
工作環境溫濕度：18~28℃（<75% RH）
儲存環境溫濕度：-10~50℃（<70% RH, 取出電池）
溫度係數：0.1準確度/℃
測量端和地之間允許的最大電壓：600V 直流或交流有效值
採樣速率：約 3次/秒
顯示：3 5/6 位液晶顯示幕
鉗口開口尺寸：30mm
超量程指示：液晶顯示器將顯示“0.L”或“-0.L”
電池低壓指示：當電池電壓低於正常工作電壓時，“ ”將顯示在液晶螢幕上。
輸入極性指示：自動顯示“”號
自動關機時間:15 分鐘
電源： 2x1.5V AAA 電池
外形尺寸：190*71*30mm
5. 儀錶說明
1. 非接觸電壓探測感應區
2. 非接觸電壓探測指示燈
3. 測量旋轉開關
4. 功能選擇按鍵
5. 資料保持按鍵
6. 顯示屏
7. 測量插座
8. 頻率測量選擇按鍵/歸零按键
9. 背光/照明按鍵
10. 鉗頭扳機
11. 鉗頭電流測量感應器
③
①
②
④
⑤
⑥
⑦
⑧
⑨
⑩
⑪

15
LCD 顯示符號
DC AC
直流,交流(電壓/電流)
通斷指示
電池不足
自動關機指示
自動量程模式
讀數保持狀態
Hz,KHz
頻率單位 赫茲,千赫茲
%
占空比
二極體測試
Ω, kΩ, MΩ
電阻單位 歐姆 千歐姆、兆歐姆
V
電壓單位 伏特
A
電流單位 安培
mF, μF, nF
電容的單位；F: 法拉，mF:毫法，μF: 微法， nF: 納法
℃/℉
溫度單位，攝氏度℃ 華氏度℉
NCV
非接觸電壓探測
LoZ
低阻抗電壓測量
VFC
變頻器電源測量
6. 技術指標
6.1 交流電流
量程
解析度
準確度
60A
0.01A
（2.5% 讀數 + 5 字）
600A
0.1A
- 最大輸入電流：600A AC 電流
-頻率響應範圍：40～1KHz , 真有效值測量；
- 過載保護：250V 交流或直流真有效值.

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6.2 直流電流
量程
解析度
準確度
60A
0.01A
（3.0% 讀數 + 15 字）
600A
0.1A
（3.0% 讀數 + 5 字）
- 最大輸入電流：600A AC 電流
- 過載保護：250V 交流或直流真有效值.
6.3 直流電壓
量程
解析度
準確度
600mV
0.1mV
（0.5%讀數+5 字）
6V
0.001V
60V
0.01V
600V
0.1V
（0.8%讀數+5 字）
-最大輸入電壓：600V DC；-輸入阻抗 10MΩ
6.4 交流電壓
量程
解析度
準確度
6V
0.001V
（1.0 %讀數+5 字）
60V
0.01V
600V
0.1V
（1.2%讀數+10 字）
- 最大輸入電壓：600V AC （有效值）；
- 輸入阻抗 10MΩ
- 頻率響應範圍：40Hz～1kHz, 真有效值測量
6.5 LoZ V 低阻抗電壓
量程
解析度
準確度
DC 600V
0.1V
（2.0%讀數+3 字）
AC 600V
0.1V
（2.0%讀數+3 字）
- 最大輸入電壓：600V AC （真有效值）；
- 輸入阻抗 1MΩ
- 交流 ACV 頻率響應範圍：40Hz～1kHz, 正弦波平均值響應

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6.6 頻率
•通過 V檔：
量程
解析度
準確度
600Hz
1Hz
（1.5% 讀數 + 5 字）
6KHz
0.001KHz
60KHz
0.01KHz
600KHz
0.01KHz
- 輸入信號範圍：0.6V ~ 600V 超載保護：600V DC 或AC（有效值）
•鉗頭測頻（通過 A檔）：
量程
解析度
準確度
600Hz
1Hz
（1.5% 讀數 + 5 字）
- 輸入信號範圍： 6A ~ 600A AC 電流（真有效值）
6.7電阻
量程
解析度
準確度
600
0.1
（0.8%讀數+5 字）
6k
0.001k
60k
0.01k
600k
0.1k
6M
0.001M
60M
0.01M
（1.2%讀數+5 字）
- 超載保護：250V DC 或AC（真有效值）
6.8電容
量程
解析度
準確度
6nF
0.001nF
± ( 5.0% 讀數+15 字)
60nF
0.01nF
± ( 4.0% 讀數+5 字)
600nF
0.1nF
6μF
0.001μF
60μF
0.01μF
600μF
0.1μF
6mF
0.001mF
100mF
0.01mF
± ( 5.0% 讀數+5 字)
- 超載保護：250V DC 或AC（真有效值）
6.9溫度
量程
解析度
準確度
-20℃～1000℃
1℃
±（1.0% 讀數 +3 字）
-4℉～1832℉
1℉
±（1.0% 讀數 +3 字）
- 超載保護：250V DC 或AC（真有效值）
9

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6.10 二極體及線路通斷測試
功能
測試條件
二極體測試
正向直流電流：約 1.2mA；開路電壓：約 3.2V。
顯示器顯示二極體正向壓降的近似值。
當被測電阻小於約 30時，蜂鳴器響
- 超載保護：250V DC 或AC（真有效值）
7. 操作指南
7.1 開機及測量準備
撥動轉換開關開機。如果電池電壓不足（約≤2.4V），顯示器將顯示“ ”符號，應
更換電池。
7.2 讀數保持
在測量的過程中，如需要讀數保持，輕觸“Hold”鍵，顯示器的顯示值將被鎖住，再次
輕觸“Hold”鍵，可解除讀數保持。
7.3 背光和輔助照明
1)在測量的過程中，如果環境光線太暗，致使讀數困難，可按“BL/FL”，打開背光源，約
30 秒鐘後自動關閉，或再次按“BL/FL”鍵關閉。
2) 按“BL/FL”鍵約 2秒，打開輔助照明 LED,同時開啟背光源，約 30 秒鐘後自動關閉，
或在此期間短按“BL /FL”鍵關閉。
7.4 自動關機
1)開機後的 15 分鐘內無任何操作時，儀錶會進入休眠狀態，自動關機以節省電能。關機
前1分鐘，蜂鳴器有“嘀嘀嘀”提示。
2)自動關機後，按任意鍵，喚醒儀錶進入工作狀態。
7.5交流、直流電流測量
1)旋轉開關旋轉到 60A 或600A 檔位（根據估計測量電流值大小選擇）。
2)按FUNC 鍵選擇 AC A 或DC A 測量。
3)握住扳機，張開鉗頭，把被測線路的一根導線夾在鉗內。
4)當被測信號≥0.05A 時，儀錶顯示幕顯示測量的電流值。
危險

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注意：
1）同時夾住被測線路的兩根或更多導線不能獲得正確的測量結果。
2）為獲得準確的讀數，應盡可能使被測導線處於電流鉗中心位置。
3）測量變頻器供電電流，可在 AC A 測量模式下長按 FUNC/VFC 鍵，切換到 VFC 模式測
量。
7.6非接觸電壓探測（NCV）
1)將旋轉開關旋至 NCV 檔位。
2)將儀錶鉗頭感應區靠近被測導線，儀錶可以探測被測導線是否存在
≥90V 交流電壓。當儀錶探測到交流電壓信號時，蜂鳴器報警同時
NCV LED 閃爍。
注意：
即使沒有報警指示，電壓仍然可能存在。不要依靠非接觸電壓探測
器來判斷導線是否存在電壓。探測操作可能會受到插座設計、絕緣
厚度類型不同等因素的影響。
7.7直流電壓或交流電壓測量
本儀錶直流或交流電壓量程為：DC: 600mV、6V、60V、600V; AC: 6V、60V、600V 。
不可測量任何高於 600V 直流或交流電壓，以防遭到電擊和/或損壞儀錶。
不可在公共端和大地間施加超過 600V 直流或交流有效值的電壓以防遭到電擊
和/或損壞儀錶。
測量交流或直流電壓：
1)將旋轉開關旋至 V檔位,按FUNC 鍵選擇 DCV 或ACV 測量。
2)分別把黑色錶棒和紅色錶棒連接到 COM 插座和 V/輸入插座。
3)用錶棒另兩端測量待測電路的電壓值（與待測電路並聯）。
4)液晶顯示測量電壓值。在測量直流電壓時,顯示器會同時顯示紅色錶棒連接的電壓極性。
5)如測量變頻器供電電壓，可在 ACV 測量模式下長按 FUNC/VFC 鍵，切換到 VFC 模式測
量。
7.8LoZ V 低阻抗交流、直流電壓測量
低阻抗電壓測量用於排除虛電電壓，該檔位量程為 600V.
該檔位自動識別測量 ACV 或DCV.
1)將旋轉開關旋至 LoZ V 檔位。
2)分別把黑色錶棒和紅色錶棒連接到 COM 插座和 V/輸入插座。
3)用錶棒另兩端測量待測電路的電壓值（與待測電路並聯）,儀錶自動識別 DCV 或ACV。
4)液晶顯示測量電壓值。在測量直流電壓時,顯示器會同時顯示紅色錶棒所連接電壓極性。
7.9頻率測量
通過電壓檔測量
1) 將旋轉開關旋至 V檔位,按“FUNC”鍵選擇“ACV”，然後按“Hz”鍵選擇 Hz 測
量。
2) 分別把黑色錶棒和紅色錶棒連接到 COM 插座和 V/輸入插座。
3) 用錶棒另兩端測量待測電路的 Hz 值（與待測電路並聯）。