Lutron Electronics DM-9027T Bedienungsanleitung

DIGITAL

MULTIMETER

4 1/2 digits, True RMS

Model : DM-9027T

Caution Symbol

Caution :

* Risk of electric shock !

Caution :

* Do not apply the overload

voltage, current to the input

terminal !

* Remove test leads before open

the battery cover !

* Cleaning - Only use the dry

cloth to clean the plastic case !

Environment Conditions

* Installation categories II .

* Pollution Degree 2.

* Altitude up to 2000 meters.

* Indoor use.

* Relative humidity 80% max.

TABLE OF CONTENTS

1. FEATURES....................................................1

2. SPECIFICATIONS..........................................1

2-1 General Specifications..............................1

2-2 Electrical Specifications............................

3. FRONT PANEL DESCRIPTION........................

4. MEASURING PROCEDURE.............................

4-1 DCV, ACV, DCA, ACA, OHM,

Continuity beeper, Diode, hFE..................6

4-2 Data hold................................................6

5. MEASURING CONSIDERATIONS....................

6. MAINTENANCE

6-1 Replacement of Battery..........................8

6-2 Replacement of Fuse.............................

6-3 Cleanin

................................................9

7. Optional Accessories.....................................9

7-1 Holster, HS-01.......................................9

7-2 Other optional accessories &

adapters..............................................10

8.THE ADDRESS OF THE AFTER SERVICE

CENTER........................................................12

1. FEATURES

* Design meet IEC 1010 safety requirement.

* 4 1/2 digits DMM, high precision.

* Large LCD display with annunciators.

* LCD display, easy read-out.

* True RMS measuring reading for ACV & ACA function.

* With data hold function

* Compact & strong housing case.

* Optional Holster case.

* Full range optional adapters for Temperature, Light,

DC/AC CLAMP current, Humidity, RPM, Pressure

measurement.

2. SPECIFICATIONS

2-1 General Specifications

Display 15 mm(0.5") LCD, w/ annunciators,

4 1/2 digits Max. reading 19999

Measurement 28 ranges, DCV, ACV, DCA, ACA,

ohms, hFE, DIODE, Continuity

Beeper.

Polarity Automatic Switching,

'-' indicates negative polarity.

Zero Adjustment Automatic adjustment.

Over-input Indicator "1 " mark indication.

Sampling Time Approx. 0.4 second.

Operating Temp. 0 蚓to 50 蚓(32 蚌to 122 蚌).

Operating Humidity Less than 80% RH.

Power Supply 006 P DC 9V battery.

Power Consumption Approx. DC 1.6 mA.

Dimensions 185 x 87 x 39 mm

(6.7 X 3.5 X 1.4 inch)

Weight 320 g/0.71 LB

Fuse The meter build in one fuse for

current range(200u/2m/20m/200mA)

protection, its spec. :

Rating - 500 mA

Size - 5 mm dia. x 20 mm

Accessories Red and Black Test Leads ..... 1 pair.

Included Instruction Manual ................. 1 PC.

Optional Please refer page 9, 10, 11.

Accessories

2-2 Electrical Specifications (23 #5 C)

DC Voltage

Range 200 mV / 2 V/ 20 V/ 200 V / 600 V

Resolution 0.01 mV / 0.1 mV /1 mV /10 mV / 0.1 V

Accuracy #(0.1%+2d) -200mV.

3(0.2%+2d) -2V,20V,200V,600V.

Input Impedance 10 M ohm.

Over Load DCV, 350 ACV - 200mV range.

Protection DCV, 600 ACV - others.

AC Voltage (True RMS)

Range 200 mV/2/20/200/600 V

Resolution 0.01 mV/0.1 m/1 m/10 m/0.1 V

Accuracy #(0.8%+10d) -200mV,2V,20V,200V,600V

* spec. are tested under 50/60 Hz.

Input Impedance 10 M ohm.

Over Load DCV, 350 ACV - 200mV range.

Protection DCV, 600 ACV - others.

DC Current

Range 200u/2m/20m/200m/10A

Resolution 10n/100n/1u/10u/1mA

Accuracy #(0.5%+5d) -200uA,2mA,20mA

#(0.8%+10d) -200mA

#(2%+5d) -10A

Over Load 200u/2m/20m/200mA range :

Protection 0.5A fuse protection

10 A range :

Max. 10A ( no fuse ).

AC Current(True RMS)

Range 200u/2m/20m/200m/10A

Resolution 10n/100n/1u/10u/1mA

Accuracy #(0.8%+10d) -200uA,2mA,20mA,200mA

#(2%+10d) -10A

* spec. are tested under 50/60 Hz.

Over Load 200u/2m/20m/200mA range :

Protection 0.5A fuse protection

10 A range :

Max. 10A ( no fuse ).

OHMS

Range 200/2k/20k/200k/2M/20M ohm

Resolution 0.01/0.1/1/10/100/1k ohm

Accuracy #(0.5%+5d) -200 ohm

#(0.3%+5d) -2k,20k,200k,2 M ohm

#(0.8%+3d) -20 M ohm.

Over Load DCV, 350 ACV.

Protection

Remark : The above DCV, ACV, DCA, ACA, ohm spec. are tested under the

environment RF Field Stren

th less than 3 V/M & frequency less

less than 30 MHz only.

Diode Check

Range Approx. forward voltage(VF),

good/defect test.

Resolution 0.1 mV.

Transistor hFE

0-1000 hFE, NPN/PNP.

Data hold

To freeze the display values.

Continuity

Sound beeper for continuity check.

Beeper will sound if the measuring resistance < 250 ohm

approximately.

3. FRONT PANEL DESCRIPTION

Fig. 1

3-1 Display 3-a Volt/OHM/Diode Input

3-2 Power On/Off Switch 3-b 200 mA Current Input

3-3 Data Hold Switch 3-c 10 A Current Input

3-4 Function Rotary Switch 3-d Transistor hFE Input

3-5 DCV Rotary Switch

3-6 ACV Rotary Switch

3-7 ACA Rotary Switch

3-8 DCA Rotary Switch

3-9 OHM Rotary Switch

3-10 hFE Rotary Switch

3-11 Battery Compartment/Cover

4. MEASURING PROCEDURE

4-1 DCV, ACV, DCA, ACA, OHM,

Continuity beeper, Diode, hF

When operate the MULTIMETER, first push on

the "POWER SW."(3-2, Fig. 1). Then rotate the

"Range Selector" to the right position. & plug in

the test lead to the right "Input Terminal"

according the following instruction & ref. Fig. 1.

Function Ran

e Selector Input Terminal

DCV 3-5 DCV 3-a

ACV 3-6 ACV 3-a

DCA ( < 200 mA) 3-7 DC

3-b

DCA ( 200 mA) 3-7 DC

3-c

ACA ( < 200 mA) 3-8 AC

3-b

ACA ( 200 mA) 3-8 AC

3-c

OHM 3-9 ohm 3-a

Continuity beeper 3-9 ohm(beeper) 3-a

Diode 3-9 ohm(Diode) 3-a

hFE 3-10 hFE 3-d

4-2 Data hold

When make any measurement, if select the "Hold Switch"

(3-3, Fig.1) to the "Hold" position will keep the data

on the display. It will release the data hold function if select

the "Hold Switch" to the "Off" position(left side) again.

5. MEASURING CONSIDERATIONS

Caution :

* Do not apply the overload

voltage, current to the input

terminal !

(1) Ensure that the battery(006 P DC 9V) is connected to

its snap terminal correctly and placed in the battery

compartment.

(2) Before operating this instrument, familiarize yourself

with all instructions that mentioned in this manual.

(3) Always check to make sure that the function switch is

set to the proper position.

(4) Place the RED Test Lead into the proper input terminal

before making measurements.

(5) Remove either of the test leads from the circuit under

test when changing the measurement range.

(6) Do not exceed the maximum rated signal of each range

to the input terminal.

(7) The "Power On/Off Switch" always to the "OFF" position

when the instrument does not use. Remove the battery if

the instrument is not to be used for a long period of

time.

(8) Be sure to slide the "Data Hold Switch" to the off position

(left side) if the data function is not be executed.

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