orangjo VC703 Digital Clamp Multimeter User Manual

Digital clamp multimeter
VG703 

VC703 – Universal multimeter

Technical specification

Universal clamp multimeter

• measurements: AC amperage, AC/DC voltage, resis-tance, diode test, circuit continuity test
• 3.5 digit LCD display
• auto ranging
• indicators: polarity, over range, exhausted battery
• buzzer
• HOLD — function remem-bering the last measurement
• auto power off (after 15 min standby)
• overload pro-tection
• power supply: 2 x AAA (included)
• number of readouts: 2 readouts per second
• operating conditions: from 0°C to 40°C, air humidity: < 80%
• storage conditions: from — 10°C to +50°C, air humidity < 75%.

Measurement accuracy for particular gauging values is given for 1 year from calibra-tion date and for an operating temperature of 23°C +/— 5°C and air humidity of 75%. Accuracy: +/—`)/0 of indicated value +/— number of least significant digits.

Safety guidelines

1. Prior to initiation of device’s usage it is recommended to get thoroughly acquaint-ed with operating manual and terms of safe use. This will allow avoiding an electric shock, health damages or loss of life, as well as it may prevent damages to the device.
2. Prior to commencing measurements it is recommended to check for damages on device’s casing or measuring cables. In case any cable or device damages are de-tected device should not be used, as it may pose an electric shock threat.
3. The device should not be used when insulation wrapping the probes and cables is damaged.
4. Only gauging cables delivered with the set may be used for measurements. In case gauging cables are damaged they should be replaced with cables of exact technical parameters.
5. The device can be used only for measurements compliant with the manual and its technical specification. Otherwise, device’s safety provisions may not be sufficient for safe usage.
6. During measurements all metal ends and gauging slots should not be touched. Fin-gers should be kept above insulation sheaths.
7. It is not allowed to make measurements with wet hands or in places with excessive air humidity.
8. It is not recommended to exceed upper limits of electric values given for each gauging range. When the scale of measured electric value is not known selection of the highest range is recommended for gauging.
9. It is not recommended to place any electronic elements into gauging slots during voltage measurements with gauging probes.
10. Prior to transistor test you should make sure that gauging probes have been dis-connected from another gauged circuit.
11. Prior to measurement of resistance, circuit continuity and capacitor’s capacity the capacitances should be discharged and all power supply sources disconnected.
12. Particular caution should be taken by measurements, which exceed DC 60 V or AC 30 V rms.
13. Prior to commencement of measurement the function range switch should be set in an adequate position. Shifting switch during the measurement may cause damage to the device.
14. Gauging probes should be removed from gauging slots prior to every change of measured parameters.
15. The device should not be used, or kept, in high air humidity or temperature condi-tions, in strong electromagnetic field or in an explosive or flammable environment. Such conditions may influence gauging results and create an electric shock haz-ard.
16. The device should not be used when the display indicates exhausted battery. Low battery level may lead to faulty gauging indications.
17. Make sure that the device is switched off before batteries are replaced.
18. In case device is not used for a longer period of time the battery should be removed in order to avoid spilling of electrolyte.
19. Device should be used and stored in a place inaccessible for children.
20. Device is designed to be used indoors, in room temperature.
21. Device should not be used directly after it is relocated from a room with high air humidity, excessively low or high temperature conditions.

Safety category

CAT I — gauging category CAT I defines safety requirements for measurements in devices which are not connected directly to a low voltage network, such as batteries, accumulators, flashlights.
CAT II — gauging category CAT II defines safety requirements for measurements carried out in devices directly connected to a low voltage network, such as home appliances, office equipment or workshop equipment.
Multimeter should not be used for measurements of devices defined by CAT III and CAT IV.

Description

1. Transformer jaws
2. Trigger for opening the jaws
3. SELECT: function selection
4. LCD DISPLAY: 3,5 digits
5. COM SOCKET: gauging socket, to be connected with the black “-” cable
6. FUNCTION RANGE SWITCH: the switch is used to choose voltage, current, resis-tance, diode test and continuity test function
7. HOLD: last measurement memory function
8. MAX: maximum measurement in selected range display, it is reseted after chan-ging measurement function
9. VS2 SOCKET: gauging socket, to be connected with the red “+” cable

AC/DC voltage measurement (auto ranging)

1. Set function range switch 6 in position V — or V -.
2. Connect the red testing cable to VΩmA socket 9 and the black cable to COM socket 5.
3. Attach gauging cables to measured circuit or device.
4. Read voltage value on the display 4 .
   AC/DC range| Resolution| Accuracy| Overload protection
   ---|---|---|---
   DC 200 mV| 0,1 mV| ±1.2%+5 digits| 600 V DC/AC rms
   DC 2 V| 1 mV| ±1.2%+3 digits
   DC 20 V| 10 mV| ±1.2%+8 digits
   DC 200 V| 100 mV
   DC 600 V| 1 V| ±0.8%+5 digits
   AC 200 mV| 0,1 mV| ±0.5%+2 digits
   AC 2 V| 1 V
   AC 20 V| 10 mV
   AC 200 V| 100 mV| ±1.0%+5 digits

Input impedance: 10 MSΩ Frequency: 40-200 Hz

Never perform the measurement of current if open circuit voltage to earth exceeds DC 600 V.
AC amperage measurement (autoranging)

1. Set range switch 6 to position 200/400 Am When the display shows “0” the function range switch 6 should be set to position 2/20 A- to obtain adequate resolution.
2. Push trigger 2, open jaws 1 and clamp one connector between the jaws.
3. Read the amperage value from the display 2 .

AC range| Resolution| Accuracy| Overload

protection

---|---|---|---
2 A| 1 mA| ±2.5°/01-10 digits| voltage drop 200 mV frequency: 40-200 Hz
20 A| 10 mA| ±2.0%+5 digits
200 A| 100 mA
400 A| 1 A

Amperage measurement is possible only with transformer jaws. Do not use the testing cables. The measurement is possible only with one connector at a time.
Resitance measurement

1. Set range switch 6 to chosen Ω position.
2. Connect red testing cable to VΩ mA socket 9 and the black cable to COM socket 5.
3. Attach gauging cables to resistor that will be measured.
4. Read current’s amperage from the display 4 .

maximal open circuit

voltage: 0.25 V

2 kΩ| 1Ω
20 kΩ| 10 Ω
200 kΩ| 100 Ω
2 MΩ| 1 kΩ
20 MΩ| 10 Ω

Capacitance measurement

1. Set range switch 6 to position.
2. Connect red testing cable to VΩ mA socket 9 and the black cable to COM socket 5.
3. Attach gauging cables to capacitor paying attention to polarization
4. Read capacity on display 4.

The tested capacitor should be discharged before the testing procedure.
Diode test

1. Set range switch 6 to position .
2. Connect red testing cable to VS2mA socket 9 and the black cable to COM socket 5.
3. Press SELECT button 3 until symbol will appear on the display .
4. Attach the red gauging cable to anode and black cable to cathode of gauged diode.
5. Read diode’s conducting voltage on display 4. By reversed cables “DL’ will be displayed.

 Test voltage: 1,5 V. Overload protection: 250 V DC/AC.

Circuit continuity test

1. Set range switch 6 to position .
2. Connect red testing cable to VS2mA socket 9 and the black cable to CON’ socket 5.
3. Press SELECT button 3 until symbol will appear on the display .
4. Attach gauging cables to measured circuit.
5. Continuity of the circuit shall be flagged with an audio signal when resistance is lower than < 30 Ω.

If the circuit resistance is in the range 30-100 Q an audio signal (buzzer) could appear. In case of resistance > 100 Ω an audio signal (buzzer) won’t appear. Test voltage: 0,5 V. Overload protection: 250 V DC/AC.

Replacement of battery

Battery should be replaced when LCD display shows an exhausted battery icon

1. Remove back cover of the multimeter.
2. Place new 2 x MA batteries paying attention to proper polarization.

Disconnect all gauging cables from the multimeter and the gauged circuit prior to removing the back cover.

Electromalt limited
15, Level 1, Suite 4, Naxxar Road, Birkirkara, BKR9049 • Malta
tel. 00356 77028874 • www.electromalt.com • office@electromalt.com

Please refer to the local collection and segregation rules for electrical and electronic equipment. Observe the regulations and do not dispose electrical and electronic equipment with cosumer waste. Proper disposal of used products helps to reduce their harmful effects on the environment and human health.

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