Pro'sKit MT-2017 Protective Function Analog Multimeter

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User's Manual

This is the main product document for model MT-2017.

The file format is pdf, 32 pages, you can download this manual here .

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MT-2017
Protective Function Analog Multimeter
Users Manual
1
st
Edition
,
2015
©2015 Copyright by Prokit’s Industries Co., Ltd.
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1
INTRODUCTION
This Multi-meter is an accurate, safe handheld meter that comes
with robust protective holster alongside, built-in stand and hook-up
design. MT-2017 is powered by batteries, offers accurate, reliable
measurement of DC/AC Voltage, +/-DCV, DC Current, Resistance
and Diode, LED, Transistor, Decibels, Continuity test and
Capacitance with very high sensitivity quality movement.
This meter is designed with double-sided glass-epoxy PCB, full
overload & misused protection via two Fuses, Oxide Varactor &
Diodes, as well as mirrored Aluminum dial plate. Ideal for indoor
use in the laboratory, school, workshop, hobby and home
applications.
SPECIFICATION
Safety Category: IEC61010-1, CAT II 1000V, CAT III 500V and
Pollution Degree 2.
Common Environment: 23C5C, less than 75% RH.
Operating temperature: 0C to 40C, 32 F to 104 F
Storage temperature: -10 C to 50C, 14 F to 122F
Operating Humidity Scope: less than 90% RH.
Storage Humidity Scope: less than 80% RH.
Dimensione: 171(W) x 108(D) x 37(H) MM
Weight: 390g approx. (including batteries 3pcs)
Accessories: One pair of test leads;
Two Spare Fuses: 0.5A/250V & 10A/250V, Φ5x20mm
Test
Functions
Range Accuracy Remarks
DC V 0-0.1-2.5-10-50-
250 V-1000V
3% FSD.
4% FSD.
For 1000V
Input Impedance:
20KΩ /V Overload
Protection: Max.
1000V AC/DC
BUT 0.1V/2.5V/10V
250V Max.
Null DCV ±-5V, ±25V 5% FSD.
Input Impedance:
40KΩ /V Overload
1000V Max.
AC V 0-10-50-250V
-1000V
4% FSD.
5% FSD.
Input Impedance:
9KΩ /V Overload
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For 1000V Protection: Max.
1000V AC/DC
But 10V/50V only
250V Max. Band
width: 40 ~10K Hz
DC mA 0-0.05-2.5-25-25
0 mA, 10A
3% FSD.
4% FSD.
For 10A
Drop Voltage: 250
mV Overload
protected by Fuses
0.5A/250V & 10A /
250V at 10A range,
and Oxide
Varactor.<250V
AC/ DC(5s). Max.
test time 15sec. for
10A.
X 1: 0.2 ~ 2K
Midscale at 20Ω
X 10: 2 ~ 20KΩ
Midscale at
200Ω
X 100: 20 ~
200KΩ
Midscale at
2000Ω
X1K: 200~ 2MΩ
Midscale at
0KΩ
X10K: 2K
~20MΩ
Midscale at
200KΩ
4% of
ARC of
Scale
Length
Overload protected
by the Oxide
Varactor & Fuse
<250V AC/DC (5s).
Capacitance
(uF)
C: 2,000uF Max.
.
Approx.
Value
Use the R x 1K
range
BATT Check 0 ~ 1.5V: GOOD
- ? – BAD
0 ~ 9V: GOOD
- ? – BAD
5% of
ARC of
Scale
Length
Load Current:
270mA for 1.5V
25mA for 9V
Overload protected
by Fuse & Oxide
Varactor .<250V
AC/DC(5s).
Transistor
Check
hFE: 0-1000 via
special hFE
socket
Approx.
Value
At Ω X 10 Range
LED, Diode via special hFE Approx. At Ω X 10 Range
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Check socket Value
Decibel -22 dB ~ + 62
dB (0dB=1mW
at 600Ω )
Approx.
Value
At ACV ranges
Via Test Leads
Continuity
Check
Beeper
sounding under
200 Ohm
Overload protected
by Fuse & Oxide
Varactor .<250V
AC/DC(5s).
POWER
Source
Internal Battery:
R3P, AAA, 1.5V
2pcs, 6F22,
NEDA1604, 9V
1pc
CALIBRATION
Ohms Zero Adjustor located at the right side of the panel.
Adjust the meter pointer to the Zero mark on the right side of
Ohm scale of the meter dial when the test leads are touched
together.
Mechanical Adjustor Screw: located right side below the center
of the meter dial to set pointer to Zero mark at the left side of
the scale.
(-) Jack: Plug-in connector at the lower left on the panel for
black, negative test lead.
(+) Jack: Plug-in connector at the lower right on the panel for
Red, positive test lead.
STAND & HOOK-UP
This meter can be used in any operating position. It has two rear
support devices, i.e. the upper small bracket and the lower big tilt
device. The upper one not only performs the light slanted position,
but also hook-up the tester which makes it easier to place the
tester and read the display when measuring.
And the lower big tilt device can provide the steeper slant degree
position easy for user’s reading too.
Hook-up
Upper Tilt
Device
Big Lower
Tilt Device
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OPERATING INSTRUCTIONS
CAUTION!
When making voltage or current measurements, develop the
habit of turning off all power to the circuit under test. Connect the
test leads at the desired points in the circuit, and then turn on
the power while taking readings. Turn off the power before
disconnecting the test leads from the circuit.
INTERNAL BATTERY CHECK
To check the battery condition, insert the black test lead into the
(-) jack. Set the range switch to the R X1 range position and
short the ends of the two sides of the test leads. If the pointer
can not be brought to the zero mark, replace the 1.5V cells or 9V
cell. (See battery replacement.)
BEFORE OPERATING
1. Set the range switch to the proper position before making any
measurement.
2. Never apply more voltage or current than the rated value in
every position.
3. When the voltage or current to be measured it not known,
always start with the highest range.
4. If meter indication is in the lower half of the scale and falls
within the range of a lower scale, reset selector switch to the
lower range for greatest accuracy.
5. If the meter won’t work at all, check the fuse located on the
PCB. If it’s blown, replace it. (See fuse replacement.)
6. Avoid placing the meter where extreme shock or continuous
vibration is encountered and do not store in excessively hot or
damp places. Although very rugged, the meter is a sensitive
measuring device and should be handled carefully & properly.
7. Do not check resistance, transistor, diode, LED, or
capacitance when live voltage or current input across the
circuit.
8. When the meter is not in use, keep the selector switch to the
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“OFF” range position, this provides direct short across meter
movement for minimum needle bounce when transporting
meter.
9. If you should accidentally apply excessive voltage or current
on a certain range, disconnect the leads from the circuit as
quickly as possible, check instrument operation on that range
by applying peoper input. If the meter does not operate
properly, check fuse. If it is blown replace it. (See fuse
replacement.)
OPERATION PROCEDURES
DC Voltage Measurement
WARNING: USE EXTREME CARE WHEN MAKING
MEASUREMENTS FOR HIGH VOLTAGE. DO NOT TOUCH
TERMINAL OR PROBE ENDS.
1. Set the selector switch to the appropriate DCV range to be
used.
2. Connect the BLACK test lead to the “-COM” jack and the RED
test lead to the “+” jack.
3. If you know the polarity of the circuit to be tested, connect the
black probe to the negative side.
4. If you don’t know the polarity, connect the probes to opposite
sides of the circuit and watch the pointer. If it goes to the left,
reverse the probes. The RED probe will be connected to the
positive.
5. Check the needle position and the get the reading on V.A scale.
Null DCV (Central Zero) Measurement
At these two ranges, it can automatically judge the polarity of
circuit as the pointer can move to the center line and become a
Null meter.
1. Set the selector switch to the DCV ±5V or 25V range.
2. Connect the BLACK test lead to the “-COM” jack and the RED
test lead to the Red “+” jack.
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3. Set the Zero adjustor to place the pointer exactly to the
Central Zero position
if need.
4. Connect the test leads across the circuit or load under
measurement.
5. Take the readings on the Red dial Null DCV scale.
NOTE: If the needle failed to be set at Central Zero position
, the
power of 9V battery may be weak and should be replaced by
new one for normal working.
AC Voltage Measurement
WARNING: USE EXTREME CARE WHEN MAKING
MEASUREMENTS FOR HIGH VOLTAGE. DO NOT TOUCH
TERMINAL OR PROBE ENDS!
1. Set the selector switch to the appropriate ACV range to be used
and connect the test leads across the circuit or load under
measurement. (Polarity of the test probes is unimportant on ACV
test.)
2. Connect the BLACK test lead to the “-COM” jack and the RED
test lead to the“+” jack.
3. Check the needle position and the get the reading on V.A scale.
DC Current Measurement
WARNING: DO NOT APPLY VOLTAGE TO MEASURING
TERMINAL WHILE RANGE SWITCH IS IN CURRENT POSITION.
DO NOT ATTEMPT TO MEASURE AC CURRENT.
1. Set the selector switch to the appropriate DC mA range to be
used and connect the test leads in series with the circuit or the
load under measurement. If the pointer deflects to the left,
reverse the probes.
2. Connect the BLACK test lead to the “-COM” jack and the RED
test lead to the Red “+” jack for Current at/less than 0.25A. For
large current max. 10A, move the red test lead to the Red “10A”
jack.
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3. Check the needle position and the get the reading on V.A scale.
Note:
Excessive current input across mA range will blow the fuse
that must be replaced by a same fuse rating 0.5A/250V or
10A/250V. The max. testing time once must be not more than
15sec. and pause 5min. for next time at big current load.
The Maximum terminal voltage drop is 250mV except for the
10A range.
Note: If connected incorrectly with the voltage at these ranges,
quickly remove the test leads from the circuit as to avoid
damage to this tester.
(This tester can afford the voltage <250V DC/AC rms. for the
period of 5 seconds max.)
Resistance Measurement
WARNING: DO NOT APPLY VOLTAGE TO MEASURING
TERMINAL WHILE RANGE SWITCH IS IN OHM POSITION.
1. Set the selector switch to the appropriate range to be used.
2. Connect the BLACK test lead to the “-COM” jack and the RED
test lead to the Red “+” jack.
3. Short the leads by touching the probes together. Pointer should
read zero at the right hand end of the upper most scale, if it
doesn’t, use the Ohm adjust knob on the right hand of the panel
to line up the pointer with zero. (If pointer can’t be brought to
zero, replace battery.)
4. Connect the test leads across the resistance to be measured.
5. Take reading on the top “” scale and multiply it by the
multiplication factor indicated by the selector switch.
6. If there is little or no pointer movement from the left side of the
scale, reset the selector switch to higher range. The effective
reading scope on an Ohm meter scale is within the area of
between 25 degree of Arc left side to the Midscale and 25
degree right side to the Midscale.
Note: If connected incorrectly with the voltage, quickly remove
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the test leads from the circuit as to avoid damage to this tester.
(This tester can afford the voltage <250V DC/AC rms. for the
period of 5 seconds max.)
Diode Measurement
1. Set the selector switch to the appropriate range to be used.
NOTE: To test the diode while current below 0.060 mA at X 10K
range; current below 0.15 mA at X 1K range; current below 1.5
mA at X 100 range; current below 15 mA at X 10 range; current
below 150 mA at X 1 range.
2. For IF (forward current) test, put the BLACK test lead to the
“-COM” jack and the RED test lead to the Red “+” jack. And then
connect the Black probe to the Positive terminal of the Diode,
the Red probe to the Negative terminal of the Diode.
For IR (reverse current) test, reverse the connection.
3. Read the value IF or IR of the diode on the LI scale.
4. Read the linear (forward voltage) VF of the diode on the LV
scale.
Continuity Test
WARNING: DO NOT APPLY VOLTAGE TO MEASURING
TERMINAL WHILE RANGE SWITCH IS IN OHM POSITION.
Set the selector switch to the BUZZ range. Connect the test leads
to two points of circuit. If the resistance is lower than 200 Ohm
approx., the Beeper sounds.
Note: Battery voltage is sufficient for Buzzer operation as long as
the Zero Ohm pointer can be adjusted to the Zero scale place.
Note: If connected incorrectly with the voltage, quickly remove
the test leads from the circuit as to avoid damage to this
tester..
(This tester can afford the voltage <250V DC/AC rms. for the
period of 5 seconds max.)
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Transistor hFE and LED Test
1. Set the selector switch to the R X 10 range.
FOR Measuring Transistor hFE
2. Take note the type of transistor “PNP” or “NPN” and then insert
the transistor terminals of the Emitter, Base and Collector
separately into the proper holes of the socket on the front panel.
3. Read the approximate hFE Value directly at the hFE scale.
Note: Current 10μA. VCE 2.8V.
4. When the Base terminal cut, the value of Leak is Iceo for
Transistor.
FOR Measuring LED: Insert the transistor terminals directly into
the “+” and “-” holes of the socket on the front panel.
And then check if the LED under testing is lighting.
Battery Check
1. This meter comes with two separate battery check ranges to test
either DC 1.5V or 9V batteries.
2. Set the selector switch to the appropriate BATT range to be
used.
3. Connect the BLACK test lead to the “-COM” jack and the RED
test lead to the Red “+” jack.
4. Connect the Red test lead to the positive end of battery and the
Black one to the negative end of the battery to be measured.
5. Take reading on the “BATT” scale and check it good or bad as
per which portion indicated.
(Note: the mark section of “?” shows that the battery may be
starting to decay.)
Note: If connected incorrectly with the voltage, quickly remove
the test leads from the circuit and can avoid the damage to
this tester.
(This tester can afford the voltage <250V DC/AC rms. for the
period of 5 seconds max.)
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Decibels Measurement
1. Set the selector switch to AC 10V range.
2. Connect the BLACK test lead to the “-COM” jack and the RED
test lead to the Red “+” jack.
3. Connect the test leads to the measuring circuit specially in
series with a 0.047μF/400V Metalized Polyester Capacitor.
And then read the bottom Red dB scale.
4. For more dB scope, change the selector switch to the others
of ACV ranges and make the same actions. Add the
appropriate number of dB scale reading as noted on the chart
below.
NOTE: For absolute dB measurements, circuit impedance
must be 600 Ohm. 0 dB = 1mw dissipated in a 600 Ohm
impedance (equivalent to 0.755V across 600 Ohm)
ACV RANGE ADD dB Number
50 14
250 28
1000 40
Capacitance Measurement
WARNING: DO NOT APPLY VOLTAGE TO MEASURING
TERMINAL WHILE MAKING ANY CAPACITANCE
MEASUREMENTS.
BEFORE TESTING ANY CAPACITORS, DISCHARGE THE
CAPACITOR COMPLETELY.
1) Set the selector switch to the C (R X1K) range.
2) Connect the BLACK test lead to the “-COM” jack and the
RED test lead to the Red “+” jack.
3) Connect the test leads to the capacitor to be measured
(Note the polarity of capacitor).
4) Watch the needle deflection to the right topside, and read
the Red C2000uF scale on the Dial.
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TROUBLESHOOTING
Nevertheless, problems or malfunctions may occur.
For this reason, the following is a description of how you can
eliminate possible malfunctions yourself:
Error Possible cause
The multimeter does
not work.
Are the batteries exhausted?
Check the state of the batteries and
the fuse 0.5A.
No measurements
possible via V/mA
socket.
Is the fuse defective? Check the fuse
0.5A (fuse replacement)
No measurements
possible via 10A
socket.
Is the fuse defective? Check the fuse
10A (fuse replacement)
No change in
measured values.
Have you selected the right
measuring sockets? Is the measuring
range/mode correct (AC/DC)?
Faulty measuring
results are displayed.
Has null balancing of the display or a
0 Ohm calibration for the resistance
measurement been carried out? Is
the batteries not properly assembled
in?
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MAINTENANCE
Replacement for Battery and/or Fuse should only be done
after the test leads have been disconnected and POWER OFF.
1. Battery Replacement
- 1.5V Battery (Pls. see the Picture below for reference)
1). This tester uses 2pcs AAA size 1.5V batteries which are
located under the lower battery cover together with the big
tilt device on the lower part of the rear case.
2).Note the condition of the batteries using the procedure
described above, if the battery needs to be replaced, turn
the lock by 90°degree and take off the cover of the battery
cabinet together with the big tilt device on the rear case.
3). Remove the spent batteries and replace them with a battery
of the same type. Observing polarity as indicated battery
polarity marking on the bottom of the battery compartments.
4). Replace the battery cover and turn the lock by 90°degree
again to tighten the battery cover.
- 9V Battery (Pls. see the Picture below for reference)
1). This tester uses One 9V battery which is located under the
upper battery cover together with the tilt-Hookup device on
the upper part of the rear case.
2).Note the condition of the battery using the procedure
described above, if the battery needs to be replaced, remove
the screw and open the upper cover of the battery cabinet
on the rear case.
3). Take off the spent 9V battery and replace them with a battery
of the same type. Observing polarity as indicated battery
polarity marking on the bottom of the battery compartment.
4). Replace the battery cabinet cover and tighten the screw.
2. Fuse Replacement(Pls. see the Picture below for reference)
1). When the fuse needs replacement, use only UL-Listed
0.5A/250V fuse or 10A/250V fuse identical in physical size to
the original type Φ5 x 20 mm.
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2). Open the big lower tilt device on the rear case and then turn
the lock by 90°degree and take off the cover of the battery
cabinet together with the big tilt device.
3). The old fuses inside their holders located on the PCB can be
visible and access to be removed. Then take off the melt
fuses and install the new fuses into their original places.
The 0.5A/250V fuse is at the left side and 10A/250V fuse at
the right side.
4). Replace the battery cover and turn the lock by 90°degree
again to tighten the lower battery cover.
NOTE: 2pcs stand-by fuses are provided and located beside the
batteries under the lower battery cover with rating marked below
the fuses.
Lock for lower 1.5V
Battery Cover
Lower 1.5V Battery Cabinet
inside and Fuses Layout
Screw
Hole
9V
Battery
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MT-2017 指針型防誤測三用電錶
操作使用說明書
特點
本機是指針式,防誤測全保護,斜立型三用電錶(附晶體 LED 座,
路蜂鳴及 10A 檔,及鍍金表筆)。具有以下基本特點和參數如下:
- 斜立型兩個可調後蓋支撐架上部支架可拉出後,向上轉動 90 ,
壓下可固定 並附帶掛鈎設計(支撐架向上轉動 180 度伸出後蓋
以便懸掛)。下部大支撐架可拉出以更大角度斜立。
- 後蓋下部特別設置了 1.5V 電池倉和用鎖扣固定的電池蓋,以非常
方便用戶拆卸和更換電池及保險管。
- 配置玻璃釺維環氧樹脂鍍金盤雙面電路板日系電池通過 CE 認證。
- 檔位切換簧片採用彈簧寶石軸承及二極體雙向限幅電路
- 具有全面的防誤測超載保護電路及速斷型保險絲多重保護
- 具有緊湊的兩側軟性防滑減振保護套
- 可測直流電壓和中間零位正負直流電壓直流電流(最大 10A,交
流電壓,電阻,電晶體,二極體,LED,電池,短路蜂鳴, 和電容
(2000uF Max.) .
- 輸入阻抗:DC20Kohm /VAC 9Kohm/V
- 直流電壓:0.1/2.5/10/50/250/1000V 六檔
- 中間零位正負直流電壓:±5V/25V 兩檔
- 直流電流:50μA/2.5m/25m/250mA/10A 五檔
- 交流電壓:10/50/250/1000V 四檔
- 阻:1/10/100/1K/10K 四檔
-
池:1.5/9V 二檔
- 容:CRX1KMax. 2,000 uF;
- 標準環境條件:23C5C, 濕度< 75% RH
- 工作環境範圍:0C ~ 40C, 濕度< 90% RH
- 儲存條件:-10C ~ 50C, 濕度< 80% RH
- 電錶外形尺寸:171(長)x 108(寬)x 37(高)mm
- 電錶重量:390 克(包括電池)
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規格表
測試功能 檔位 準確度 說明
直流電壓
DCV
0-0.1-2.5-10-50-25
0-1000V
±3%FSD(滿刻度)
±4%FSD(1000V
)
輸入阻抗:20K/V
超載:Max 1000V
但在 0.1V/2.5V/10V
檔,250V Max.
正負直流電壓
Null DCV
DC ±5V/±25V ±5% FSD.(滿刻度)
輸入阻抗:40K/V;
超載:Max.250V
交流電壓 ACV
0-10-50-250V-100
0V
±4%FSD(滿刻度)
±5%FSD(1000V
)
頻率範圍:
40~10KHz
輸入阻抗:9K/V
超載:Max.1000V
10V/50V 檔,250V Max.
直流電流
DCA
0-0.05-2.5-25-250
mA, 10A
±3%FSD(滿刻度)
±4%FSD(10A )
壓降:250mV
超載保護:0.5A/250V
保險絲管;在 10A ,超
載保護F10A/250V, 大電
流測試時間最多 15
電阻
X1:0.2~2K
(中值:20)
X10:2~20K
(中值:200)
X100:20~200K
(中值:2000)
X1K:200~2M
(中值:20K)
X10K:2K~20M
(中值:200K)
±4%ofARC(弧長)
超載:最高 AC/DC250V
最低 DC/AC50V
超載最大測試時間 5 秒。
Capacitance
C2,000uF 最大值
參考值 使用 Rx1K
電池測量
BATT Check
0~1.5V:GOOD
-?-BAD
0~9V:GOOD-?-BA
D
參考值
負載電流270mA(1.5V
) 25mA(9V 電池)
超載:最高 AC/DV250V
最低 DC/AC 50V
超載最大測試時間 5 秒。
三極管檢測 hFE: 0-1000 參考值 使用 ×10
LED,
Diode Check
參考值 使用 ×10
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Continuity
Check
200 歐姆左右以
內,蜂鳴器會響。
載:最 AC/DC 250V
最低 DC/AC 50V 超載最
大測試時間 5 秒。
內部電源
1.5V5 號電池:2
節,
6F22.9V 矩形電
池:1
指針防誤測斜立型三用電錶指針閱讀參考表
測試
Tes t
量程檔位
Range Position
指標刻度讀數
Scale to read
倍數
Multiplied
電阻(歐姆)
Resistance()
×1
×10
×100
×1K
×10K
×1
×10
×100
×1000
×10000
直流電壓
(伏特)
DC Volt(V)
DC 0.1V
2.5V
10V
50V
250V
1000V
10
250
10
50
250
10
×0.01
×0.01
×1
×1
×1
×100
正負直流電壓(伏特)
Null DC Volt(V)
DC ±5V
±25V
-5-0-+5
-25-0-+25
×1
×1
直流電流
(安培)
DC CurrentA
DC 50μA
2.5mA
25mA
250mA
10A
50
250
250
250
10
×1
×0.01
×0.1
×1
×1
交流電壓
(伏特)
AC Volt(V)
AC 10V
50V
250V
1000V
10V
50
250
10
×1
×1
×1
×100
hFE ×10 IC/IB ×1
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二極體 Diode
×10K
×1K
×100
×10
×1
μA×1
μA×10
μA×100
mA×1
mA×10
測量注意事項
1. 指針調零
調整零位調整器使指針和左側的零位對齊不必每次測量前都
調,但是在開始測量之前,指標都必須確認指標在零位上。
2. 測試棒的連接
紅色棒插“+”插孔,黑色棒插入“-COM”插孔。
3. 電錶內部電池檢查
將表棒按以上規定方式接入好,再將檔位旋鈕轉到 Rx10 檔位。
然後將表棒的兩端短路連接這時檢查指針是否正常回歸零
位。若不能,則電池電力不足,應要更換新電池。
4. 量程的選擇
選擇測量檔位時,旋鈕上的三角形記號對準規定的適當量程。
測量工作程式:
1. 直流電壓:
用於測量電池、放大器電路、通訊設備電源、電子管和電晶體電
路偏 壓的直流電壓。6 個檔位元中的每一個檔位元標記,分別表
示該檔的最大電壓示值。
(※不確定之直流電壓,應從最大值依序向下調整量測)
2. 中值零位正負直流電壓:不可測量任何交流電壓!)
本功能專用檢測電子電路的正負電平。通過表棒接入電路,可直
接查看刻度讀數。
注意:在此檔位時,可用歐姆電調零指針設置在中間位置。若
無法調到中值零位則有可能是 9V 電池電量不足請檢查
電池。
3. 交流電壓:
用於測量商業交流電壓、交流電源電路交流放大信號級等。4
檔位元中的每一個檔位元標記,分別表示該檔的最大電壓示值.(
不確定之交流電壓,應從最大值依序向下調整量測)
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4. 直流電流:不可測量任何交流電流或電壓!)
用於測量直流電源控制裝置的電流消耗、電晶體電路的工作電
等。5 個檔位元中的每一個檔位元標記,分別表示該檔的最大電流
示值。
(※不確定之直流電流,應從最大值依序向下調整量測)
注意當在 10A 檔測試大電流時單次測試時間不能超過 15
而且兩次測試間隔時間不少於 5 分鐘
本機具有防誤測保護電可短時5 秒內)承受低於 AC/DC 250V
的電壓衝擊,僅爆保險絲。
5. 電阻:(※此功能不能測試帶電壓電路)
測量電阻值和測試線路和線路間的連通性。5 個檔中的每一個檔
位元標記,分別表示該檔乘數。(K X1000)
注意本機在電阻檔具有防誤測保護電路。可短時(5 秒內)承
受低於 AC/DC 250V 的電壓衝擊,僅爆保險絲。
6. 連通性測試(Buzz) (※此功能不能測試帶電壓電)
將量程選擇旋鈕置於 Buzz 當被測電路<200ohm, 蜂鳴器鳴叫。
注意本機在檔位元具有防誤測保護電路。可短時(5 秒內)承
受低於 AC/DC 250V 的電壓衝擊,僅爆保險絲。
7. 電池測試※電池能用於小的晶體管收音機但不能用作裝的電
。)
好電池指針停留在綠色(GOOD) 內。電 足:指
尚可使用範圍內。
壞電池:指標停在紅色(BAD)區域。
注意本機在檔位元具有防誤測保護電路。可短時(5 秒內)承
受低於 AC/DC 250V 的電壓衝擊,僅爆保險絲。
8. dB 測試:
本機測量 dB 值時,要接入表棒並串接一個 0.047μF/400V 電解電
,然後檢視電錶讀數。
測量在 10V 檔上進行,可直接讀取 dB 刻度(-10dB~+22dB)
測量在 50V 檔上進行時,刻度讀值要加 14dB,才是實際 dB 值。
測量在 250V 檔上進行時,刻度讀值要加 28dB
測量在 1000V 檔上進行時,刻度讀值要加 40dB
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例如,在 1000V 檔上最大可測 dB 值是 22+40=62dB
9. hFE(直流放大倍數)和發光二極體(LED)測試:
將量程選擇旋鈕置於“OHM”檔上之 X10
hFE 測試:
(1) 調節 0 調整器使指針和零位對齊-將電晶體的三個管腳直接
插入面板上的 hFE 端座。
(※注意區分電晶體的類別“PNP”“NPN”)
(2) hFE 刻度讀出顯示值所讀之值是 IC/IB即被測體的直流
放大倍數。
LED 測試:
(1) LED 的兩個腳按正負極性直接插入面板上的 LED “+”“-”
兩個端座。
(2) 檢查 LED 是否正常發光。
10. 二極體測試:
(1) 將量程選擇旋鈕置於檔上有選擇的量程位置,X10K 用於
0~60μ A 測試X1K 用於 0~150μ AX100 用於 0~1.5m A
X10 0~15mAX1 用於
0~150mA 測試。
(2) 將電錶與二極體連接測 IF(正向電流),將電錶的“COM”端與
二極體陽極相連,“+”端與二極體陰極相連,對於 IR(反向電
)測試連接方法和 IF 相反。
(3) LI 刻度線讀出 IF IR
(4) 在測試 IF IR 同時在 LV 刻度上,讀出二極體正向(反向)電壓。
11. 電容測試
注意:檢測前,須將電容放電並將電錶調零。(※此功能不能測
試帶電壓電路)
a.將電錶量程選擇旋鈕置於x1k”檔。
b.用表棒連接電容,並注意“+”“-”極性。
c.觀察指標偏轉最大時,電錶刻度板上紅色 C 刻度。
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常見問題故障及處理
若用戶在使用中發現本機出現一些普通常見問題故障可參照下表
自行進行分析處理:
問題和故障 原因和處
指針無反應,不動 表棒是否接觸良好? 內部保險管是否
燒斷?
內部電池是否正確裝好,並接觸到位?
(參閱有關電池和保險管更換說明)
指針指示異常 檔位量程是否選擇正確? 交流和直流
模式是否使用正確?
內部電池是否電量不足?(參閱有關電
錶內部電池檢查說明)
指針無法正常歸零
內部電池是否接觸良好?是否電量不
足?(參閱有關電錶內部電池檢查說明)
內部機芯處的遊絲是否並圈?可試用力
將本機甩動幾下或在手中拍擊幾下後,
看是否恢復正常。
DC10A 檔不能工作 表棒是否接觸良好,正確接入?
內部 10A 保險管是否裝好或燒斷?
(參閱有關保險管更換說明)
日常維修
維修更換電錶內部電池和保險絲管時必須將表棒從電錶上移調
切斷電源
1). 1.5V 電池更換:(參閱下圖)
打開電錶後面的下部大支撐架,將下部的電池倉後蓋的鎖扣旋轉 90
度,既可將電池倉後蓋連支撐架卸下,然後從電池座中拿出不好的
電池。再將新的同規格電池放入原位,並注意電池的正負極性。然
後,蓋上後蓋並將鎖扣旋轉 90 度而鎖住。
2). 9V 電池更換:(參閱下圖)
打開電錶的上部電池倉後蓋從電池座中拿出不好的電池再將新的
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同規格電池放入原位並注意電池的正負極性然後蓋上後蓋並擰
緊螺釘。
3). 保險絲管更換:(參閱下圖)
打開電錶後面的下部大支撐架,將下部的電池倉後蓋的鎖扣旋轉 90
度,既可將電池倉後蓋連支撐架卸下。 即可看到電路板上的兩個並
列保險管(左邊的為 0.5A/250V, 右邊為 10A/250V), 從保險絲座中拿
出不好的保險絲管。再將新保險絲管(0.5A/250V 10A/250V
Φ5*20mm)換必須用同規格 UL 認證的保險絲管。 然後,蓋
後蓋並將鎖扣旋轉 90 度而鎖住。
(本電錶的下部電池倉的左右兩邊一般各設有 1 個備用保險絲管)
1.5V 電池蓋鎖扣
1.5V 電池倉和保險管位置
螺絲孔
9V 電池
位置
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MT-2017 型防误测三用
操作使用
本机是指式,防误测全保,斜立型三用(附晶体 LED 座,短
路蜂 10A ,及金表)。具有以下基本特参数如下:
- 斜立型,两个架。上部支架可拉出后,向上转动 90 ,
下可固定; 并附钩设计(支架向上转动 180 度伸出后
以便挂)。下部大支架可拉出以更大角度斜立。
- 下部特别设置了 1.5V 和用扣固定的,以非常
方便用拆卸和更换电池及保管。
- 配置玻璃钎维环
盘双路板,池, CE 认证
- 位切簧片采用承及二极向限幅
- 具有全面的防误测护电路及速型保险丝多重保
- 具有紧凑两侧软性防滑振保
- 直流电压和中零位正直流电压,直 流( 10A,交
电压阻,晶体管,二极管,LED池,短路蜂,
(2000uF Max.) .
- 入阻抗:DC20Kohm /VAC 9Kohm/V
- 直流电压0.1/2.5/10/50/250/1000V
六檔
- 零位正直流电压±5V/25V
- 直流流:50μA/2.5m/25m/250mA/10A 五檔
- 交流电压10/50/250/1000V 四檔
- 阻:1/10/100/1K/10K 四檔
- 池:1.5/9V 二檔
- 容:CRX1KMax. 2,000 uF;
- 件:23C5C, 湿< 75% RH
- 工作境范0C ~ 40C, 湿< 90% RH
- 件:-10C ~ 50C, 湿
< 80% RH
- 表外形尺寸:171x 108x 37(高)mm
- 表重量:390 克(包括池)
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格表
测试功能 檔位 准确
直流电压
DCV
0-0.1-2.5-10-50-25
0-1000V
±3%FSD(刻度)
±4%FSD(1000V
)
入阻抗:20K/V
Max 1000V
但在 0.1V/2.5V/10V 各檔,
250V Max.
直流电压
Null DCV
DC ±5V/±25V ±5% FSD.(刻度)
入阻抗:40K/V;
Max.250V
交流电压 ACV
0-10-50-250V-100
0V
±4%FSD(刻度)
±5%FSD(1000V
)
率范
40~10KHz
入阻抗:9K/V
Max.1000V
10V/50V 檔,250V Max.
直流
DCA
0-0.05-2.5-25-250
mA, 10A
±3%FSD(刻度)
±4%FSD(10A )
降:250mV
0.5A/250V
险丝管;在 10A ,超
F10A/250V,
测试时间最多 15
X1:0.2~2K
(中值:20)
X10:2~20K
(中值:200)
X100:20~200K
(中值:2000)
X1K:200~2M
(中值:20K)
X10K:2K~20M
(中值:200K)
±4%ofARC()
:最高 AC/DC250V
最低 DC/AC50V
最大测试时间 5 秒。
Capacitance
C2,000uF 最大值
考值 使用 Rx1K
BATT Check
0~1.5V:GOOD
-?-BAD
0~9V:GOOD-?-BA
D
考值
负载电流:270mA(1.5V
) 25mA(9V )
:最高 AC/DV250V
最低 DC/AC 50V
最大测试时间 5 秒。
三极管检测 hFE: 0-1000 考值 使用 ×10
LED,
Diode Check
考值 使用 ×10
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Continuity
Check
200 歐姆左右以
会响
:最高 AC/DC 250V
最低 DC/AC 50V
测试时间 5 秒。
1.5V5 号电池:2
6F22.9V 矩形池:
1
误测斜立型三用表指针阅读参考表
测试
Tes t
量程檔位
Range Position
刻度读数
Scale to read
Multiplied
(歐姆)
Resistance()
×1
×10
×100
×1K
×10K
×1
×10
×100
×1000
×10000
直流电压
(伏特)
DC Volt(V)
DC 0.1V
2.5V
10V
50V
250V
1000V
10
250
10
50
250
10
×0.01
×0.01
×1
×1
×1
×100
直流电压(伏特)
Null DC Volt(V)
DC ±5V
±25V
-5-0-+5
-25-0-+25
×1
×1
直流
(安培)
DC CurrentA
DC 50μA
2.5mA
25mA
250mA
10A
50
250
250
250
10
×1
×0.01
×0.1
×1
×1
交流电压
(伏特)
AC Volt(V)
AC 10V
50V
250V
1000V
10V
50
250
10
×1
×1
×1
×100
hFE ×10 IC/IB ×1
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二极管 Diode
×10K
×1K
×100
×10
×1
μA×1
μA×10
μA×100
mA×1
mA×10
量注意事
1. 针调
整零位整器,使指和左的零位对齐不必每量前都
,但是在量之前,指都必在零位上。
2. 测试棒的
色棒插“+”插孔,黑色棒插入“-COM”插孔。
5.
表棒按以上定方式接入好,再将档位旋钮转 Rx10 檔位。
然后,表棒的端短路接。这时查指是否正常回
位。若不能,则电力不足,要更池。
6. 量程的
选择
选择测,旋上的三角形记号对定的适量程。
量工作程序:
1. 直流电压
用于池、放大器路、通讯设备电源、子管和晶体管
路偏 的直电压6 文件位中的每一文件位标记,分
文件的最大电压示值。
(※不确定之直流电压应从大值依序向下整量)
2. 中值零位正直流电压不可量任何交流电压
本功能检测电路的正负电平。通表棒接入,可直
接查看刻度
读数
注意:在此,可用歐姆电调针设置在中位置。若
到中值零位,有可能是 9V 量不足。请检
池。
3. 交流电压
用于量商交流电压、交路、交流放大信号级等。4
文件位中的每一文件位标记,分表示文件的最大电压
.(※不确定之交流电压应从最大值依序向下整量)
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4. 直流流:不可量任何交流流或电压
用于量直流源控制置的流消耗、晶体管路的工作
等。5 文件位中的每一文件位标记,分表示文件的最大
流示值。
(
不确定之直流流,应从最大值依序向下整量)
注意 10A 档测试测试时间不能超 15
而且测试间时间不少于 5
本机具有防误测护电路。可短5 承受低于 AC/DC 250V
电压冲击爆保险丝
5. 阻:(
此功能不能测试带电压电)
阻值和测试线路和线通性。5 文件中的每一
文件位标记,分表示文件乘(K X1000)
注意本机在阻文件具有误测护电路。可短5
承受低于 AC/DC 250V 电压冲击爆保险丝
6. 通性测试(Buzz) (
此功能不能测试带电压电)
量程选择置于 Buzz 文件,测电<200ohm, 叫。
注意本机在文件位具有防误测护电路。可短5 )承
受低于 AC/DC 250V 电压冲击爆保险丝
7. 测试
池能用于小的晶体管收音机,但不能用作
池:停留在绿(GOOD)围内量不足:停在
尚可使用范围内
池:指停在(BAD)域。
注意本机在文件位具有防误测护电路。可短5 )承
受低于 AC/DC 250V 电压冲击爆保险丝
8. dB 测试
本机 dB ,要接入表棒并串接一 0.047μF/400V
,然后检视电读数
量在 10V
行,可直接 dB 刻度(-10dB~+22dB)
量在 50V ,刻度值要加 14dB,才是实际 dB 值。
量在 250V ,刻度值要加 28dB
量在 1000V ,刻度值要加 40dB
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例如,在 1000V 上最大可 dB 值是 22+40=62dB
9. hFE(直流放大倍)光二极管(LED)测试
量程选择置于“OHM”檔上之 X10
hFE 测试
(3) 调节 0 整器使指和零位对齐-晶体管的三直接
插入面板上的 hFE 端座。
(
注意分晶体管的类别“PNP”“NPN”)
(4) hFE 刻度示值,之值是 IC/IB,即 体的直流
放大倍
LED 测试
(3) LED 两个脚按正极性直接插入面板上的 LED “+”“-”
两个端座。
(4) LED 是否正常光。
10. 二极管测试
(5) 量程选择置于上有选择的量程位置,X10K 用于
0~60μ A 测试X1K 用于 0~150μ AX100 用于 0~1.5m A
X10 0~15mAX1 用于 0~150mA 测试
(6)
将电表与二极管 IF(正向)将电表的“COM”端与
二极管极相“+”端与二极管极相 IR(反向
)测试连接方法和 IF 相反。
(7) LI 刻度线读 IF IR
(8) 测试 IF IR LV 刻度上,出二极管正向(反向)电压
11. 测试
注意:检测前,须将电容放将电零。(
此功能不能
试带电压电)
a.将电表量程选择置于x1k”檔。
b.用表棒容,并注意“+”“-”极性。
c.察指最大表刻度板上 C 刻度。
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见问题故障及
若用在使用中,发现本机出一些普通常见问题故障,照下表
自行行分析理:
问题和故障 原因和
针无,不 表棒是否接触良好? 部保管是否
烧断
池是否正确好,并接触到位?
参阅关电池和保管更换说明)
指示异常 位量程是选择正确? 流和直流
模式是否使用正确?
池是否量不足?(参阅关电
明)
针无法正常
池是否接触良好?是否量不
足?参阅关电明)
部机芯的游是否并圈?可用力
本机甩几下或在手中拍几下后,
看是否恢复正常。
DC10A 檔不能工作 表棒是否接触良好,正确接入?
10A 管是否好或烧断
参阅管更换说明)
日常
修更换电池和保险丝,必 须将表棒从电表上移,并
断电
1). 1.5V 池更(参阅)
开电表后面的下部大支架,下部的扣旋 90
度,既可将电盖连架卸下,然后从电池座中拿出不好的
池。再新的同池放入原位,并注意池的正极性。然
后,上后将锁扣旋 90 度而住。
2). 9V 池更(参阅)
开电表的上部从电池座中拿出不好的池。新的
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池放入原位,并注意池的正极性,然后,上后
3). 险丝管更(参阅)
开电表后面的下部大支架,下部的扣旋 90
度,既可将电盖连架卸下。 即可看到路板上的两个
列保( 0.5A/250V, 边为 10A/250V), 险丝座中拿
出不好的保险丝管。新保险丝管(0.5A/250V 10A/250V
Φ5*20mm用同 UL 认证的保险丝管。 然后,
将锁扣旋 90 度而住。
(本表的下部的左右两边一般各 1 个备用保险丝管)
1.5V 电池盖锁扣
1.5V 电池仓和保险管位置
螺丝孔
9V 电池
位置
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区产品保固卡
购买日期
公司名
联络电话
联络地址
店章
品型 MT-2017-C
在正常使用情下,自原购买日起 12 月免费维修保(不含
耗材、消耗品)
品保固卡需上店章、日期章,其保固效力始生效。
本卡妥善保存,如需修服务时出示本卡以为证明。
保固后,属调整、或是修性之服酌收修工
时费用。若有零件需更零件
品保固
保固期限,如有下列情者,修中心得酌收材料成本或修
(由本公司修人判定)
对产品表面的损伤,包括外或刮痕
用、疏忽、不测试,未开产品修理,
修改品或者任何其他超出期使用范的原因所造成的
因事故、化、其他危害,自然灾难所造成的
害。
非服证内容:
机件本体外之消耗品:如...等消耗品
机件本体之外之附配件:如耳机源供器,记忆
卡,CD 等附配件。
.期限之修或服,未更零件,依公司保固
修政策酌收服务费
务电话: 0755 83692415 / 83692986 /83246594 / 83247554
务传: 0755 83692143
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http://www.prokits.com.tw
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Specifications

Pro'sKit MT-2017 Questions and Answers

  • Total questions: 1
  • Questions unAnswered : 1

Q: Buongiorno, qualcuno sa il valore della resistenza R19 del multimetro in quastione? Grazie 1000 Reply