Prokit's Industries 3PK-570 User Manual

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Personal Type

Analogue

Multi-meter

3PK-570

3PK-570

Certificate Number : Q12323

5

0

250

200

150

100

50
10
2

0

0

0

20

5

10

15

0

1

?

2

10

0

15

20

22

30

6

400

8

50

10

2

1

500

200

100

50

20

10

1k

2k

CE

250

50

1000

1000

10

250

2.5

50

10

V~

x10k

x100

x1k

150A

1.5mA

X10

150mA

150mA

x1

1.5V

BATT

0.1V

50A

2.5

2.5

250

10A

mA

!

!

10A

COM

VmA

(with hFE range and built-in protective circuit)

(with hFE range and built-in protective circuit)

NSTRUCTION MANUAL

FEATURES:

This Tester is an accurate, safe, batter-operated, easy-operated and
handy - sized instrument. A very high sensitivity of 20,000 OHM/V
DC & 9,000 OHM/V AC and linear movement offers accurate
reliable Measurements of DC/AC Voltage, DC Current, Resistance
and Diode & LED, Continuity Test and Decibels on over 90 ARC
mirrored Scale with the reasonable overload protection provided via
Fuses & Diodes. Whether beginners or professionals you are, it is an
ideal device for use in the field laboratory, workshop hobby and
home applications.

1. All - purpose function: including resistance test, AC & DC Volt
or DC current test, Continuity Test, battery test etc.

2. High sensitivity & wide range measurement, lower to
45μA for DC testing. Internal Resistance up to 20KΩ/ V
for DC test, 9KΩ/V for AC test.

3. Excellent resolution factor of 0.2MV, and widened resistance
range reading from 0.2Ωup - to20MΩ.

4. Series condenser terminal (output).

5. 3-volt & 9-volt internal battery power.

6. One - handed operation control and rational arrangement of ranges.

7. Safety emphasis measuring terminals and test leads

SPECIFICATIONS

DCV Ranges: 0.1 - 2.5 - 10 - 50 - 250 - 1000V
Accuracy at FSD: ±3%
Sensitivity: 20KΩ/V

ACV Ranges: 10 - 50 - 250 - 1000V
Accuracy at FSD: ±4%
Sensitivity: 9KΩ/V

DCA Ranges: 50 μA (at DCV0.5 position ), 2.5mA, 25mA,
250mA (Volt drop < 0.6V), Extension 10A
(with a special socket, Volt drop < 0.15V )
Accuracy at FSD: ±3%

Resistance Ranges:
x 1 - 0.2Ω up to 2KΩ, Midscale, at 20Ω
x 10 - 2Ω up to 20KΩ, Midscale, at 200Ω
x 100- 20Ω up to 200KΩ, Midscale, at 2000Ω
x 1K - 200Ω up to 20MΩ, Midscale, at 20KΩ
x 10K -2kΩ up to 20MΩ, Midscale, at 200KΩ

Accuracy: ±4% of Arc length
Decibels Measurement

- 10 to + 22dB 0dB = 1mw /600Ω

BATTERY TEST: 1.5V (250mA)
BUZZER for Continuity Test: Sounding under resistance within 30Ω
Diode & LED Test:

Fuse: 0.5A/250V6.4d x 30 (non - arcing type )
DIMENSIONS: 160 x 88 x 40 mm (1 x w x h )
WEIGHT: 280g

OPERATIONS
Ω TEST

(1) Plug the test leads into - COM and + sockets.
(2) Place the range selector to the Ωrange position.
(3) Short the test leads and turn 0 ΩADJ to set the pointer

to zero position.
(4) Make sure that there is no voltage across the circuit to be tested.
(5) Read the Ω scale referring the reference table.

DCV TEST
(1) Plug the red test lead into the " + " socket and the black

one into the " - " COM.
(2) Set the range selector to a selected DCV range position.
(3) Connect the Red test lead to the positive polarity of

the circuit tested and black one to the negative.
(4) Read the DC A V scale referring the reference table.

Range Position Multiplier

x 1 x 1

x 10 x 10

x 100 x 100

x 1K x 1000

x 10K x 10000

Range Position Multiplier

0.1V x 0.01

2.5V x 0.01

10V x 1

50V x 1

250V x 1

1000V x 100

Range Position Multiplier

10V x 1

50V x 1

250V x 1

1000V x 100

Range Position Multiplier

50μA x 1

2.5mA x 0.01

25mA x 0.1

250mA x 1

10A x 1

ACV TEST

(1) Plug the red test leads into the " +" socket and the

black into the "-" COM socket.
(2) Set the range selector to a selected ACV range position.
(3) Connect the test leads to the circuit being tested regardless

of the polarities.
(4) Read ACV scale with the reference table.

DCA TEST
(1) Place the red test lead into the " + " socket and the

black into the "-" COM
(2) Set the range selector at a selected DCA range position.
(3) Connect the red test lead to positive polarity of the

circuit tested and the black into the negative.
(4) Read the DC A V scale converted with the reference table.

When measuring large current up to 10A, set the

range selector at "10A" position. Then place the red test

lead into the " + " socket and the black lead into the

special "10A" socket. And next do as above.

DECIBEL MEASUREMENT

1. Plug the black test lead into the - COM terminal and
red lead into the + terminal.

2. Place the range selector to the 10V AC range.

3. Connect the test leads to the circuit to be tested and
read the dB scale.

BATTERY TEST

(1) Plug the black test lead into the - COM terminal and

the red lead into the + terminal.

(2) Set the range selector at " BATT 1.5V " position.
(3) Touch red test lead at " + " terminal of battery and

the black test lead at "-" end of battery.

(4) Read the value on the "BATT 1.5V" scale. And then

check it "good" or "bad".

BUZZER CONDUCTION TEST

(1) Set range switch to "BUZZ" position.
(2) Connect test probes to the circuit.
(3) Buzzer sounds if the circuit is conductible.

DIODE & LED TEST

(the " - " socket of the Tester is power positive polarity)

(1) Set the range selector at R x 10 range position plug

the test leads respectively to "+" and "-" sockets

(2) For IF ( forward current ) test, connect the one test lead

to the positive polarity of the diode and the another test
lead to the negative polarity of the diode, For IR (reverse
current) test, reverse the connection.

(3) Read the Value IF or IR of the diode on the L1 scale

provided.

(4) Read the linear (forward) voltage VF of the diode on

the LV scale and IF (forward current) on the L1 scale
while testing LED diode.

CAUTION ! !
This instrument contains no operator serviceable
parts. This manual must be read carefully and completely
before making any measurement. To avoid electrical shock
remove test leads.

When replacing batteries or fuses, always disconnect the
test leads and signal inputs first to avoid shock.
After replacement, be sure to tighten t he case.

安全守則

下列安全守則必須被注意以便於確認著使用者

在最安全的情況下使本電表:

如果測試棒外觀看似受損或是電表操作疑似不在正常時,

請勿使用本電表. 進行與電有關的測量時,

請勿使自己成為接地.請勿碰觸裸露的金屬片,插座或裝備等,

因該物可能成為接地媒界. 為使身體與地隔離,

請穿著乾的衣物.橡膠鞋或利用橡膠地墊或

任何可以絕緣的材料.當測試中,在切割.焊錫處拆開

或中斷電路之前,請關閉電源,因少量電流也可能招致危險.

使用測試棒時要注意手指放在測試棒的後面.

凡測試超過電錶限訂範圍外的電壓時,可能會損壞電表

或可能使使用者觸電.每次使用前確認電表的

電壓使用範圍限制.

一般規格

1.顯示:3-3/4位數液晶顯示器(LCD),最大讀值3999.

2.極性:"自動險示"+"或"-"符號表示正負"

3.附加功能:自動關機和數據保持,交直流轉換,相對測量及歸零

4.過載顯示:LCD顯示"1"或"-1"

5.低電池顯示:當LCD顯示+ -表示需要換電池

6.取樣速度:2.5次/秒

7.操作環境:0C-40C, 相對濕度80%RH.

8.儲藏溫度:-10C-60C,相對濕度0-80%RH(電池須拿掉)

9.電力:AA1.5v電池兩顆

10.電池壽命:約100小時

11.尺寸:153MM*74MM*45MM

12.重量:約350克(包括電池和護套)

13.附件:說明書.測試棒

規格表

直流電壓

400mV 0.1mV 0.5%+1dgt

檔 位 解析度 準確度 輸入阻抗 過載保護

DC 1000V

AC 750V

rms

10m

0.8%+2dgt

4.0V 1.0mV

40.0V 10.0mV

400.0V 100mV

1000V 1.0V

交流電壓

400mV 0.1mV 1.2%+3dgt

檔 位 解析度 準確度 輸入阻抗 過載保護 頻率範圍

AC 750V

rms

10m

1.5%+3dgt

4.0V 1mV

40.0V 10mV

400.0V 100mV

750V 1V

400HZ

~

400HZ

400V 0.1A

檔 位 解析度 準確度 承受電壓 過載保護

0.5A保險絲

及二極體

0.3V

0.1V

4000.0V 1.0A 1.0%1dgt

40.0mV 10.0A

400.0mV 100.0A

10A 10.0mA 2.0%3dgt 0.1V 10A保險絲

及二極體

直流電流

交流電流

400A 0.1A

檔 位 解析度 準確度 輸入阻抗 過載保護 頻率範圍

AC 750V

rms

0.3V

2.5%+5dgt

4000A 1A

40mV 10A

400mV 100A

10A 10mA

400HZ

~

400HZ

1.5%3dgt

0.1V

10A保險絲

及二極體

電阻

( )

400 0.1 1.2%+2dgt

檔 位 解析度 準確度 開路電壓 過載保護

DC/AC

380V

rms

0.4V

1.0%+2dgt

2.0%+4dgt

4k 1

40k 10

400k 100

4m 1k

40m 10k

二極體測試

1mV 1mV =1.5V

檔 位 解析度 測試電流 開路電壓 過載保護

DC/AC
380V
rms

導通測試

0.1 低於30 低於=0.4V

檔 位 解析度 聲響 開路電壓 過載保護

DC/AC
380V
rms

電晶體hFE

0-1000 <1.5V 1B=10 A

檔 位 測量範圍 測試電壓 測試電流 過載保護

NPN
PNP

電容測試

4nF (5% of rdg.+25dgt) 1pF

檔 位 準確度 解析度 測試頻率

400Hz

40nF (2.0% of rdg.+10dgt) 10pF

400nF (0.5% of rdg.+3dgt) 100pF

4 F (1.0% of rdg.+2 dgt) 1nF

40 F (1.5% of rdg.+2. dgt) 10nF

頻率測試(自動量程)

10 Hz

檔 位 準確度 解析度 零敏度

0.3 Vrms

1.0 Vrms

100 Hz

1000 Hz

10K Hz

100K Hz

1000K Hz

0.01 Hz

0.1 Hz

1 Hz

10 Hz

100 Hz

1K Hz

(0.5%of rdg.+2dgt)

操作說明

直流電壓/交流電壓(DCV/ACV)測量

1. 紅色測試棒插入"V mA"座,而黑色測試棒插入"COM"座

2. 依所需將旋鈕開關轉到"DCV"或"ACV"

(如果待測的電壓值不確定時,請以最高檔位開始,

依次遞減選擇最適合的檔位)

3. 檢查LCD顯示螢幕上的AC/DC標志,若不一致,則將AC/DC

的切換按鍵按一下保證正確測量

4. 將測試棒的另外兩端以串聯方式接觸待測的電路

5. 以液晶顯示器(LCD)讀取測試值

直流電流(DCA)/交流電流(ACA)測量

1. 紅色測試棒插入"V mA"座(如果待測電流值在200mA到

10A之間,請改插入"10A"座),而黑色測試棒插入"COM"座

2. 轉動旋鈕開關到"DCA"或"ACA"(如果待測的電流不確定時,

請以最高檔位開始,依次遞減選擇最適合的檔位)

3. 檢查LCD顯示螢幕上的AC/DC標志.若不一致,

則將AC/DC的切換按鍵按一下以保證正確測量

4. 將測試棒的另外兩端以串聯方式去接觸待測的電路

5. 以液晶顯示器(LCD)讀取測試值

電阻測量

1. 紅色測試棒差入"V mA"座,而黑色測試棒插入"COM"座

2. 轉動旋鈕開關到" "

(如果待測的電阻值不確定時,請以最高檔位開始,

依次遞減選擇最適合的檔位)

3. 將測試棒的另外兩端去接觸待測的電阻

4. 以液晶顯示器(LCD)讀取測試值

二極體 測量

1.轉動旋鈕開關到" "檔位

2.紅色測試棒插入"V mA"座,而黑色測試棒插入"COM"座

3.將測試棒的另外二端去測量電路的導通情況 . 如果電路內

的阻抗值小於30 ,蜂鳴器將會作響

電晶體(hFE)測量

1. 轉動旋轉開關到"hFE"(NPN或PNP)

2. 依照E.B.C順序將電晶體的腳插入"hFE"座

3. 以液晶顯示器(LCD)讀取測試值

電容測量

1. 轉動旋轉鈕開關到"F"檔

2. 將所測電容的兩腳直接插入電容CX插座中.

(注意測量前,須將電容先行放電)

3. 當測量小於4nF電容時,應當先按一下"REL"按鍵歸零".

以保證測量準確度

4. 以液晶顯示器上讀數

頻率測量

1. 轉動旋鈕開關到"HZ"檔

2. 將紅端表棒插入"V/ "插口,黑色表棒接入"COM"插口

3. 將表棒的另外兩端同所測電路相接

4. 以液晶顯示螢幕讀數

保養須知

警告-更換電池,保險絲或做任何維修之前,必須先拿掉測試棒

電池更換

電源是由二介AA DC 1.5V電池所供應,當"+ -"符號顯現表示

電池需要更換新. 卸下底盤的兩顆螺絲,拿起底盤,然後更換電池

保險絲更換

如果電流測量無法進行,請檢查保護用保險絲是否已燒壞

保險絲位於"V mA"座,更換保險絲時,卸下底盤的兩顆螺絲,

拿起底盤,保險絲用同等級0.5A/250V或10A/250V快熔

保險絲更換.