Pro's Kit MT-3202 User manual

MT-3202
3 3/4 Digital AC Clamp Meter
User’s Manual
1st Edition,
©2020 Copyright by Prokit’s Industries Co., Ltd.

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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 measures 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 received the meter, check if it has been damaged during the delivery.
After been kept and delivered in shoddy conditions, 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)
CATⅡFollows the over-voltage (Setup) level II of IEC-61010-1 standard and
pollution degree 2, which means the impulse withstand voltage level of
protection provided.
In line with the European Union (EU) Standard
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.

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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.
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 while 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
DC AC
DC, AC voltage or Ampere
Connected disconnect indicate
Low battery
Automatic shutdown indicate
Automatic range measurement mode
NCV
Non-contact voltage detection
Readings hold status
Hz Hertz
③
①
②
④
⑤
⑥
⑦
⑧
⑨
⑩
⑪

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Ω, kΩ, MΩ Ohm, Kilohm, Megohm (resistance)
V
Volt (voltage),
A
Ampere (current)
℃/℉
Temperature ℃ or ℉
mF, μF, nF Farad - The unit of capacitance.
Millifarad - 1x10-3 or 0.001 farad.
Microfarad - 1x10-6 or 0.000001 farad.
nF - 1x10-9 or 0.000000001 farad.
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: 4000 digits.
Max open jaw: 30mm.
Polar indication: Automatically indicate,‘-’ means negative polarity.
Over range Indication: ‘0.L’ or ‘-0.L’.
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℃

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3.2 Technical Index
AC Current
Measurement range
Resolution
Accuracy
4A 0.001A ±（3% reading + 5 digits）
40A
0.01A
±（2% reading + 5 digits）400A 0.1A
600A
0.1A
Minimum input current: 0.01A AC current
Maximum input current: 600A AC current
Frequency response: 40Hz-400Hz, True-RMS
DC Voltage
Measurement range
Resolution
Accuracy
400mV 0.1mV
±（0.8% reading +5 digits）
4V
0.001V
40V 0.01V
400V
0.1V
600V 1V
Minimum input voltage: 0.1mV DC
Maximum input voltage: 600V DC
AC Voltage
Measurement range Resolution Accuracy
4V
0.001V
±（1.2% reading +5 digits）
40V 0.01V
400V
0.1V
600V 1V
Minimum input voltage: 0.02V AC
Maximum input voltage: 600V AC (valid value)
Frequency response: 40Hz-2kHz, True-RMS

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Frequency
Pass V position:
Measurement range
Resolution
Accuracy
4Hz 0.001Hz
±（0.5% reading + 5 digits）
40Hz
0.01Hz
400 Hz 0.1Hz
4KHz
0.001KHz
40KHz 0.01KHz
Input signal range: 0.5V~600V
Overload protection: 600V DC or AC (valid value)
Clamp head frequency measurement (Pass A position):
Measurement range Resolution Accuracy
40Hz
0.01Hz
±（0.5% reading + 5 digits）400 Hz 0.1Hz
1KHz
0.001KHz
Input signal range: 4A~600A AC current (valid value)
Resistance
Measurement range
Resolution
Accuracy
400Ω0.1Ω
±（1.2% reading +5digits）
4k
Ω
0.001k
Ω
40kΩ0.01kΩ
400k
Ω
0.1k
Ω
4MΩ0.001MΩ
40M
Ω
0.01M
Ω
Overload protection: 250V DC or AC (valid value)

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Capacitance
Measuring range
Resolution
Accuracy
4nF 0.001nF ± (3%reading +15 digits)
40nF
0.01nF
± (3%reading +5 digits)
400nF 0.1nF
4μF
0.001μF
40μF 0.01μF
400μF
0.1μF
4mF 0.001mF
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 50
Ω
Overload protection: 250V DC or AC (valid value)
Temperature
Measuring Range
Resolution
Accuracy
-20℃～1000℃
1℃
±（3% readings +5 digits）
-4
℉～
1832
℉
1
℉
±
（
3% readings +5 digits
）
Overload protection: 250V DC or AC (valid value)
4. Operation Guide
4.1 Measurement Preparations
Turn the rotary 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.

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Or press “BL / FL” key again to close Back Light.
2）Press “BL / FL” key for about 2s to turn on the flash lighting function and the backlight
at the same time. Short press the “BL / FL” key again to turn off the lighting function.
It turns off automatically with no operation for 30s.then the Back Light will be turned
off.
4.4 Auto Power Off
1）If the meter is power on without any operation after 15 minutes, 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 Current Measurement
1）Turn the rotary switch to the appropriate position 4/40A or 400A/600A.
2）Hold the trigger, open the clamp head and clamp one cable of the measured circuit.
3）When measured signal >0.01A, 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.
4.6 Non-contact Voltage Detection (NCV)
1）Turn the rotary 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 and insulation
thickness types are different and so on.
In NCV detection mode, the meter will not measure the voltage, resistance and current
at the same time.
4.7 Measurement of AC voltage and DC voltage
The meter provides DC voltage measuring ranges as follows: 400mV, 4V, 40V, 400V and
600V. AC voltage measuring ranges: 4V, 40V, 400V and 600V.
Measurement of AC voltage or DC voltage
1）Turn the rotary switch to the position “ V” and press “FUNC” to choose DCV or ACV.
2）Connect the test lead in black and test lead in red to COM input socket and V/Ωinput
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.
Note:
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.

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4.8 Frequency measurement
Pass V position:
1）Turn the switch to “ V” and press “FUNC” to choose ACV; then press “Hz” to choose
Hz.
2）Connect the black test lead to the COM jack and the red lead to the V/Ωjack.
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 ≥4A）:
1）Turn the rotary switch to the appropriate position 4/40A or 400A/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 ≥ 4A AC current, the LCD of the meter displays the measured Hz
value.
4.9 Resistance Measurement
Ohm is the unit of electric resistance (Ω).
The measuring ranges of electric resistance of this meter are 400Ω, 4kΩ, 40kΩ, 400kΩ,
4MΩand 40MΩ,
Measurement of electric resistance
1）Turn the rotary switch to the Ωposition, press “FUNC” to choose Ω.
2）Connect the test lead in black and test lead in red to COM input socket and V/Ωinput
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.
Note:
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 “OL” that indicates the
measured value is over the measuring range.
4.10 Diode test
1）Turn the rotary switch to the Ωposition and press “FUNC” to choose .
2）Connect the test leads in black and in red to COM input socket and V/Ωinput socket
respectively.
3）Connect the test leads in black and in red to the positive and negative poles of the diode

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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 “OL”.
4.11 Beep continuity test
1）Turn the rotary switch to the Ωposition and press “FUNC” to choose .
2）Connect the test leads in black and in red to COM input socket and V/Ωinput 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 50Ω, the beeper will sound continuously,
and the LED will be on.
4.12 Capacitance measurement
The measuring ranges for the capacitance of this meter are 4nF/40nF/400nF/4μF
/40μF/400μF/4mF.
Measurement of capacitance:
1）Turn the rotary switch to the position.
2）Connect the test leads in black and in red to COM input socket and V/Ωinput 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.
4.13 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/Ω℃, 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.
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.

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2）Screw the fastening screws of the meter battery cover and move away.
3）Replace the old battery.
4）Install the battery cover as previous.
Note:
Do not violate the battery polarity.
5.2 Replace Test lead
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-3202 鉗形電表使用說明書
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，請將手指握在表棒護指裝置的後面。
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。

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4. 通用技術指標
自動選擇量程
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 3/4 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“−”號代表負極
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
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

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LCD 顯示符號
DC AC
直流、交流電壓或電流
通斷指示
電池不足
自動量程模式
自動關機指示
讀數保持狀態
V 電壓單位 伏特
A 電流單位 安培
ΩkΩMΩ電阻單位 歐姆 千歐姆、兆歐姆
Hz kHz 頻率單位 赫茲,千赫茲
℃/℉溫度單位，攝氏度℃ 華氏度℉
mF,μF, nF F: 法拉，電容的單位
mF:毫法，1x10-3 或0.001 法拉.
μF: 微法，1x10-6 或0.000001 法拉
nF: 納法， 1x10-9 或0.000000001 法拉
NCV 非接觸電壓探測
6. 技術指標
6.1 交流電流
量程 解析度 準確度
4A 0.001A ±（3% 讀數 + 5 字）
40A 0.01A
±（2% 讀數 + 5 字）400A 0.1A
600A 0.1A
- 最小輸入電流：0.01A AC 電流； 最大輸入電流：600A AC 電流
-頻率響應範圍：40～400Hz , 真有效值測量

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6.2 直流電壓
量程 解析度 準確度
400mV 0.1mV
±（0.8%讀數+5 字）
4V 0.001V
40V 0.01V
400V 0.1V
600V 1V
-最小輸入電壓 0.1mV DC；最大輸入電壓：600V DC
6.3 交流電壓
量程 解析度 準確度
4V 0.001V
±（1.2%讀數+5 字）
40V 0.01V
400V 0.1V
600V 1V
- 最小輸入電壓：0.02V AC; 最大輸入電壓：600V AC （有效值）
- 頻率響應範圍：40Hz～2kHz, 真有效值測量
6.4 頻率
• 通過 V檔：
量程 解析度 準確度
4Hz 0.001Hz
 （0.5% 讀數 + 5 字）
40Hz 0.01Hz
400 Hz 0.1Hz
4KHz 0.001KHz
40KHz 0.01KHz
- 輸入信號範圍：0.5V ~ 600V -超載保護:600V DC 或AV 有效值
• 鉗頭測頻（通過 A檔）：
量程 解析度 準確度
40Hz 0.01Hz
±（0.5% 讀數 + 5 字）400Hz 0.1Hz
1KHz 0.001KHz
- 輸入信號範圍： 4A ~ 600A AC 電流（有效值）

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6.5 電阻
量程 解析度 準確度
400Ω0.1Ω
±（1.2%讀數+5 字）
4kΩ0.001kΩ
40kΩ0.01kΩ
400kΩ0.1kΩ
4MΩ0.001MΩ
40MΩ0.01MΩ
- 超載保護：250V DC 或AC（有效值）
6.6 電容
量程 解析度 準確度
4nF 0.001nF ± ( 3% 讀數+15 字)
40nF 0.01nF
± ( 3% 讀數+5 字)
400nF 0.1nF
4μF 0.001μF
40μF 0.01μF
400μF 0.1μF
4mF 0.001mF
- 超載保護：250V DC 或AC（有效值）
6.7 溫度
量程 解析度 準確度
-20℃～1000℃
1℃
±（3% 讀數 +5 字）
-4℉～1832℉
1℉
±（3% 讀數 +5 字）
- 超載保護：250V DC 或AC（有效值）
6.8 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 50Ω時，蜂鳴器響
- 超載保護：250V DC 或AC（有效值）

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7. 操作指南
7.1 開機及測量準備
撥動測量旋轉開關，開機。如果電池電壓不足（約≤2.4V），顯示器將顯示“ ”符號，此時應
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，打開背輔助照明 LED,同時開啟光源，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 交流電流測量
1)旋轉開關旋轉到 4/40A 或400A/600A 檔位（根據估計測量電流值大小選擇）。
2)握住扳機，張開鉗頭，把被測線路的一根導線夾在鉗內。
3)當被測信號≥0.01A 時，儀錶顯示幕顯示測量的電流值。
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。
危險

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7.6 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: 400mV、4V、40V、400V、600V; AC: 4V、40V、400V、600V 。
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/Ω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所連接的電壓極性。
7.7 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。
7.8 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/Ω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）。
通過電流檔測量
1) 將旋轉開關旋至 4A/40A 或400A/600A 檔位,然後按“Hz”鍵選擇 Hz 測量。
2) 握住扳機，張開鉗頭，把被測線路的一根導線夾在鉗內。
3) 當被測信號≥4A 時，儀錶顯示幕顯示測量的頻率（Hz）值。
7.9 電阻測量
1) 將旋轉開關旋至Ω檔位。
2) 分別把黑色錶棒和紅色錶棒連接到 COM 插座和 V/Ω輸入插座。
3) 用錶棒探針分別與待測電阻兩端連接，測量待測電阻的Ω值。
注意：
在電路上所測量到的電阻值通常會和電阻的額定值有所不同。
在測量低電阻時,為了測量準確請先短路兩錶棒讀出錶棒短路的電阻值,在測量被測電阻後需減去該

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電阻值。
當儀錶開路時，顯示器將顯示“OL”，表示測量值超出量程範圍。
7.10 二極體測量
1) 將旋轉開關旋至Ω檔位，按“FUNC”鍵選擇“ ”。
2) 分別把黑色錶棒和紅色錶棒連接到 COM 插座和 V/Ω輸入插座。
3) 分別把黑色錶棒和紅色錶棒連接到被測二極體的負極和正極。
4) 儀錶顯示被測二極體的正向偏壓值。如果錶棒極性接反，儀錶將顯示“OL”。
5) 在電路裏，正常的二極體仍應產生 0.5V 到0.8V 的正向壓降；但反向偏壓的讀數將取決於兩錶棒之
間其他通道的電阻值變化。
7.11 蜂鳴通斷測試
1) 將旋轉開關旋至Ω檔位，按“FUNC”鍵選擇“ ”。
2) 分別把黑色錶棒和紅色錶棒連接到 COM 插座和 V/Ω輸入插座。
3)測錶棒另兩端測量接被測電路兩端,如被測電路電阻小於約 50Ω，蜂鳴器會發出連續響聲。
7.12 電容測量
本儀錶的電容量程為 4nF,40nF,400nF,4µF,40µF,400µF,4mF
測量電容：
1) 將旋轉開關轉至 檔位。
2) 分別把黑色錶棒和紅色錶棒連接到 COM 插座和 輸入插座。
3) 錶棒另兩端測量待測電容兩端，並從液晶顯示器讀取測量值。
注意：
測量大電容時，穩定讀數需要一定時間。
測量有極性電容時，要注意對應極性，避免損壞儀錶。
7.13 溫度測量
1) 將旋轉開關旋至℃/℉檔位。按“FUNC” 鍵選擇℃或℉測量功能，儀錶將顯示周圍環境溫度。
2) 分別把熱電偶的正負極性連接到 COM 插座和 V/Ω輸入插座，測溫探頭接觸待測物體表面。
3) 由液晶顯示器讀取測量溫度值。
8. 保養
更換電池
警告
在打開儀錶的電池蓋之前，應將表筆從測量電路移開，以避免電擊危險。
1)如果“ ”符號出現，表明應更換電池。