Lutron Electronics DM-9961 Manuale utente
True RMS
AUTO RANGE
MULTIMETE
R
CAT III-1000 V cate
g
ory, Auto ran
g
e, REL, Capacitanc
e
Hz, Duty, ACV, ACA, DCV, DCA, Ohm
s
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 III-1000V.
* Pollution Degree 2.
* Altitude up to 2000 meters.
* Indoor use.
* Relative humidity 80% max.
TABLE OF CONTENTS
1. FEATURES................................................................
.
1
2. SPECIFICATIONS.....................................................
.
2
2-1 General Specifications.......................................... 2
2-2 Electrical Specifications........................................ 3
3. FRONT PANEL DESCRIPTION..................................... 6
4. PRECAUTIONS & PREPARATIONS FOR
MEASUREMENT......................................................... 8
5. MEASURING PROCEDURE..........................................
.
9
5-1 Symbols & Units of Display .................................9
5-2 DC voltage, AC voltage Measurement ................
.
10
5-3 Resistance Measurement.....................................10
5-4 DC current, AC current Measurement .................11
5-5 Continuity Check ...............................................
.
13
5-6 Diode Test ........................................................
.
13
5-7 Capacitance Measurement..................................
.
14
5-8 Frequency, DUTY Measurement...........................15
5-9 Relative Measurement........................................
.
16
5-10 Data Hold Operation.......................................... 16
6. MAINTENANCE..........................................................17
6-1 Replacement of Battery.......................................
.
17
6-2 Cleaning.............................................................
.
17
6-3 Replacement of Fuse...........................................
.
18
7. OPTIONAL ACCESSORIES & ADAPTERS .....................
.
19
8. THE ADDRESS OF AFTER SERVICE CENTER................20
1. FEATURES
* True RMS ACV, ACA measurement
* Meet IEC 1010 CAT III 1000 V safety requirement.
* Large LCD display with measurement unit.
* Multi function measurement. DCV, ACV, DCA, ACA,
Resistance, Capacitance, Frequency, Duty, Diode,
Continuity beeper.
* Data hold.
* Relative measurement.
* Auto range with manual range selection.
* When make the ACV, ACA measurement, it
also can measure the signal frequency, % duty at
the same time.
* 4000 counts A/D, high resolution.
* Both 10 A, mA, uA current are build fuse for safety
consideration.
* 10 M ohm impedance for voltage circuit.
* Operates from one DC 9V battery,
* Built-in overload protection for most ranges.
* Uses durable, long-lasting components, enclosed in
strong, light weight ABS-plastic housing.
* Full line optional adapters : Clamp adapter,
Tachometer adapter, Pressure adapter, Humidity
Adapter, Sound level adapter, Anemometer adapter,
Light adapter, EMF adapter.
1
2. SPECIFICATIONS
2-1 General Specification
s
Display 65 mm x 48 mm large LCD display
with bar graph indicator.
Measurement DCV, ACV, DCA, ACA, Resistance,
Capacitance, Frequency, Duty,
Diode, Continuity beeper.
A/D counts no. 4000 counts.
Range selection Auto range with manual range
selecting.
Special function Relative measurement, Data hold.
Data hold To freeze the display reading on the
LCD display.
Power On/Off Auto power of or manual power off.
management
@ Details please refer page 8
Relative To offset the measurement value.
measurement
Polarity Automatic Switching, " - " indicates
negative polarity.
Zero adjustment Automatic.
Sampling time Approx. 0.5 to 1 second.
Operating 0 to 50 (32 to 122 ),℃℉
Temp. & humidity Max. 80% RH.
Power supply 006 p dc 9V battery.
Power Approx. DC 1.7 mA.
consumption
2
Dimension 185 x 88 x 40 mm
( 7.3 x 3.5 x 1.6 inch )
Weight 350 g/0.77 LB.
Accessories Red and Black Test Leads
Included ( CAT III 1KV Test Leads )...... 1 Set
0.5 Amp Spare Fuse................ 1 PC
Instruction Manual..................
.
1 PC
Optional Full line adapters :
accessories ACA/DCA current adapter,
Tachometer adapter,
Humidity adapter, Pressure adapter,
Light adapter, EMF adapter,
Sound level adapter,
High voltage probe.
2-2 Electrical Specifications (23±5
)
℃
DC Voltage
Range 400.0 mV /4 V/40 V/400 V/1000 V
Resolution 0.1 mV /1 mV /10 mV /100m V/1 V
Accuracy ± (0.5%+2d )
Input impedance 10 M ohm.
Over load ± 500 DCV, 350 ACV - 400 mV range.
protection ± 1000 DCV, 1000 ACV - other ranges.
3
AC Voltage ( True RMS )
Range 4 V/40 V/400 V/1000 V
Resolution 1 mV /10 mV /100m V/1 V
Accuracy ± (1%+2d )
* Spec. are tested under 50/60 Hz.
Input impedance 10 M ohm.
Over load ± 1000 DCV, 1000 ACV - other ranges.
protection
AC Current ( True RMS )
DC Current
Range 10 A/400 mA/40 mA/4000 uA/400 uA
Resolution 10 mA/0.1 mA/0.01 mA/1 uA/0.1 uA
Accuracy 400 mA/40 mA/4000 uA/400 uA :
± (0.5%+2d )
10 A :
± (1.5%+2d )
* ACA spec. are tested under 50/60 Hz.
Over load 10A range : 10A fuse.
protection uA, mA range : 500 mA fuse.
Diode ( Forward voltage, VF )
Range 4 V DC.
Resolution 0.001 V.
Accuracy ± (0.5%+2d )
Capacitance
Range 40 nF/400 nF/4 uF/40 uF
Resolution 10 pF/0.1 nF/1 nF/10 nF
Accuracy < 2 nF : ± (3%+20d )
Others : ± (3%+1d )
4
Frequency
Range 4 Hz/40 Hz/400 Hz/4 KHz/40 KHz/
400 KHz/4 MHz
Resolution 0.001 Hz/0.01 Hz/0.1 Hz/0.001 KHz/0.01 KHz
0.1 KHz/0.001 MHz
Accuracy ± (0.5%+2d )
Sensitivity Min. 1.5 V rms, Max. 5 V rms.
Duty
Range 1 % to 99 %
Resolution 0.1 %
Accuracy ± 1% duty
Measuring signal Function switch set to " Hz " :
and level 2 Vp-p to 5 Vp-p,
square wave 10 KHz max.
Function switch set to "ACV", "ACA" :
50 Hz to 500 Hz
OHMS
Range 400/4 K/40 K/400 K/4 M/40 M ohm
Resolution 0.1/1/10/100/1 K/10 K ohm
Accuracy 400 ohm ± (0.5%+2d )
4K/40K/400K/4 M
40 M ± (2%+5d )
Over load ± 500 DCV, 350 ACV
protection
Continuity Beeper
Beeper will sound if measured resistance less than 20 ohm.
Remark :
* Spec. tested under the environment RF Field Strength less
than 3 V/M & frequency less than the 30 MHz only.
5
3. FRONT PANEL DESCRIPTION
Fig. 1
6
Fig. 1
3-1 Display
3-2 HOLD button
3-3 Hz/DUTY button
3-4 REL button
3-5 DCA/ACA button
3-6 RANGE button
3-7 Ohm/Diode/Buzzer button
3-8 Function rotary switch
3-9 10A input terminal
3-10 mA/uA input terminal
3-11 COM input terminal
3-12 Voltage/Ohm/Cap./Hz input terminal
3-13 Battery compartment/Cover
3-14 Stand
7
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