ELCART
ELCART DISTRIBUTION SPA via Michelangelo Buonarroti, 46 - 20093 Cologno Monzese (Milano) ITALY
Tel. +39 02.25117310 Fax +39 02.25117610 sito internet: www.elcart.com e-mail: [email protected]
Manuale di istruzioni/Scheda tecnica
La divulgazione dei dati contenuti in questa scheda è da ritenersi un servizio puramente informativo e non costituisce alcun vincolo da parte della Elcart in merito a prestazioni ed utilizzo del prodotto.
The divulgation of data contained on this technical sheet are exclusively for informational reasons and establish no link on behalf of Elcart regard to thr performances and the usa of the product.
La divulgacion de los datos contenidos en esta ficha son un servicio unicamente informativo y no constituyen ningun vinculo de parte de Elcart respecto a las prestaciones y uso del producto.
ART. 9/7800
PAGINA 3 DI 4
DIGITAL MULTIMETER ART. 9/7800 NI 2100
OPERATION MANUAL
1.
Overview
The multimeter is characterized at slim size, portable, stable performance
and anti-dropping capacity. Using 3½ digits LCD monitor with character
15mm high, they offer clear readings. With overall circuitry design
centering on large-scale IC A/D converters in conjunction and over-load
protection circuit, the meters give excellent performance and exquisite
making as a handy utility instrument.
The meters can be used to measure DC & AC voltage, DC current,
resistance, positive diode voltage fall, hFE parameters for transistor and
Continuity.
2. Panel Layout
LCD Display: 3½ digits, character 15MM high
V
Ω
mA Input Jack
10A Input Jack
COM Input Jack
3. Safety Information
3-1 The meters are designed according to IEC-1010 concerning electronic
measuring instruments with an over-voltage category (CAT II) and pollution
2.
3-2 Follow all safety and operating instructions to ensure that the meter is
used safely and is kept in good operating condition.
3-3 safety symbols:
important safety information, refer to the operating manual.
Dangerous voltage may be presence.
Double insulation (protection Class II)
4. Special Cautions for Operation
4-1 The meters can be safe only according to standard procedures when
used in conjunctions with the supplied test leads. To replace damaged test
leads with only the same model or same electric specifications.
4-2 To avid risk of electric shock, do not use the meters before the cover is
in place.
4-3 The range switch should be right position for the testing.
4-4 To avoid electric shock and damaging the instruments, the input
signals are forbidden to exceed the specified limits.
4-5 When measuring TV set or switched power, attention should be paid
to the possible pulses that may bring destruction to the circuit.
4-6 Range switch position is forbidden to be changed at random during
measurement.
4-7 Take caution against shock in the course ot measuring voltage higher
than DC 60V & AC 30V.
4-8 Protection fuse should be replaced only with same type and same
specification.
5. GENERAL SPECIFICATIONS
5-1 Max Voltage between input terminal and Earth Ground: CAT II 600V
5-2 Over-range Indication: display “1” for the significant digit.
5-3 Automatic display of negative polarity “_” .
5-4 Low Battery Indication: ‘ ’ displayed
5-5 Max LCD display: 1999 (31/2 digits)
5-6 Fuse protection: F-200mA/250V (Ø5x20MM)
5-7 Power Supply: 9V battery, 6F22 or NEDA 1604
5-8 Operating Temp.: 0
℃
to 40
℃
(relative humidity <85%)
5-9 Storage Temp.:-10
℃
to 50
℃
((relative humidity <85%)
5-10 Guaranteed precision Temp.: 23
±
5
℃
(relative humidity <85%)
5-11 Dimension: 69x138x31MM (with holster)
5-12 Weight: approx. 170g (including battery)
6. Testing Specifications
Accuracy is specified for a period of year after calibration and at 18
℃
to 28
℃
(64
℉
to 82
℉
) with relative humidity to 75%.
6-1
DC Voltage
range
resolution
accuracy
200mV
0.1mV
±
(0.5% of rdg +7 digits )
2V
1mV
±
(0.5% of rdg +7 digits)
20V
10mV
±
(0.5% of rdg +7 digits)
200V
100mV
±
(0.8% of rdg + 7 digits)
600V
1V
±
(1.0% of rdg + 7 digits)
-- Input Impendence: 1M
Ω
- Overload protection: 250V for 200mV range, effective DC or AC 600V for
other ranges
6-2 AC Voltage
range
resolution
accuracy
200V
100mV
±
(1.2% of rdg + 10 digits)
600V
1V
±
(1.2% of rdg + 10 digits)
-- Frequency Range: 40 to 400Hz
-- Response: average, calibrated in rms of sine wave
6-3 DC Current
range
Resolution
accuracy
200
μ
A
0.1
μ
A
±
(1.0% of rdg + 2 digits)
2mA
1
μ
A
±
(1.0% of rdg + 2 digits)
20mA
10
μ
A
±
(1.0% of rdg + 2 digits)
200mA
100
μ
A
±
(1.5% of rdg +12 digits)
10A
10mA
±
(3.0% of rdg + 2 digits)
-- Overload protection: F 200mA/250V fuse
Note:
10A range: not fused
6-4 Resistance
range
Resolution
accuracy
200
Ω
0.1
Ω
±
(1.2% of rdg + 8 digits)
2K
Ω
1
Ω
±
(0.8% of rdg + 3 digits)
20K
Ω
10
Ω
±
(0.8% of rdg + 3 digits)
200K
Ω
100
±
(0.8% of rdg + 3 digits)
2M
Ω
1K
Ω
±
(1.2% of rdg + 8digits)
-- over-load protection: 250V effective value
6-5 Transistor hFE Test
range
Test Range
Test Current / voltage
NPN & PNP
0-1000
Ib=10uA / Vce=3V
6-6 Diode Test
range
resolution
Function
1mV
Display: read approximate forward voltage of
diode
-- over-load Protection: 250V effective value
-- forward DC current: approximate 1mA
-- Reversed DC voltage: approximate 3.0V
6-7 Continuity
range
Function
Built-in buzzer will sound if resistance is lover than
50
Ω
-- over-load protection: 250V effective value
-- open circuit voltage: approximate 3.0V
Light Button Switch: Press this button to switch on back light If the dark
circumstance light makes the reading difficulty when measuring, the
light will be automatically turned off in 5 seconds. Press again to switch
it on again. If the battery is in weak power, the light will be dimmed.
Rotary Switch: use this switch to select functions and ranges
Data-hold Switch (HOLD)Back
7-
6-
5-
4-
3-
2-
1-
