81773 - Multimeter VOREL - Free user manual and instructions
Find the device manual for free 81773 VOREL in PDF.
| Product type | Digital multimeter |
| Brand | VOREL |
| Model | 81773 |
| Display | LCD 3 1/2 digits, max 1999 |
| Sampling frequency | Approximately 2 to 3 times per second |
| Power supply | 9 V battery type 6F22 |
| Fuse | F0.5 A / 250 V |
| Dimensions | 145 x 75 x 35 mm |
| Weight (without batteries) | 177 g |
| Operating temperature | 0 to 40 °C, relative humidity < 75% |
| Storage temperature | -10 to 50 °C, relative humidity < 85% |
| Measurement functions | DC voltage (200 mV to 600 V), AC voltage (200 V, 600 V), DC current (200 µA to 10 A), resistance (200 Ω to 2 MΩ), diode test, audible continuity test, transistor hFE test |
| Special functions | Measurement hold (HOLD), display backlight |
| Overload indication | Symbol "1." displayed |
| Polarity indication | Minus sign "-" for reverse polarity |
| Input protection | Fuse 250 mA/250 V on VΩmA terminals (except 10 A unfused) |
| Maintenance and cleaning | Soft cloth, isopropyl alcohol for contacts |
| Safety instructions | Do not use in humid, explosive atmospheres or in the presence of toxic vapors; do not exceed maximum ranges; disconnect cables before opening the housing |
| Warranty and repairability | Spare parts: fuse and batteries; no information on repairability |
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USER MANUAL 81773 VOREL
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Abstract geometric logo design with interlocking white lines forming a stylized 'Z' shape (no text or symbols)VOREL
BY TOYA
PL CYFROWY MIERNIK UNIWERSALNY
81773
EN DIGITAL UNIVERSAL MULTIMETER
DE UNIVERSELL DIGITAL MESSGERAT
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Two identical cylindrical electronic test probes with labeled pins, shown from different angles (no text or symbols on the devices themselves)PL
- LCD screen
- measurement switch
- measurement jack
- control buttons
- test leads
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This symbol indicates that waste electrical and electronic equipment (including batteries and storage cells) cannot be disposed of with other types of waste. Waste equipment should be collected and handed over separately to a collection point for recycling and recovery, in order to reduce the amount of waste and the use of natural resources. Uncontrolled release of hazardous components contained in electrical and electronic equipment may pose a risk to human health and have adverse effects for the environment. The household plays an important role in contributing to reuse and recovery, including recycling of waste equipment. For more information about the appropriate recycling methods, contact your local authority or retailer.
A multifunction meter is a digital measuring instrument designed to measure various electrical or physical quantities. The meter has a plastic casing, liquid crystal display, and a range/measured quantity switch. The casing has measurement jacks fitted. The meter comes with test leads terminated with plugs. The meter is sold without a battery.
Before using the meter, read the instruction manual in its entirety and keep it for later use.
CAUTION! This meter is not a measuring instrument within the meaning of the Metrological Act.
TECHNICAL DATA
Display: 3 1/2 digits LCD – greatest displayed result: 1999
Sampling frequency: approx. 2–3 samples per second Overload marking: "1" sign displayed
Polarity marking: “−” sign displayed before the result Battery: 6F22, 9 V
Fuse: F 0.5 A/250 V
Working temperature range: 0 to 40°C at relative air humidity <75%
Storage temperature: -10 to +50 °C at relative air humidity <85%
Outer dimensions: 145 x 75 x 35 mm
Weight (without batteries): 177 g
CAUTION! It is forbidden to measure electrical values exceeding the maximum measuring range of the meter.
| Parameter DC voltage | |||
| Ref. no. Range Resolution Accuracy | |||
| 81773 | 200 mV 1 | 00 μV ±(0.5% | +3) |
| 2 V 1 mV | ±(0.8% +5)20 V | ||
| 200 V 10 | 0 mV | ||
| 600 V 1 V | ±(1.0% +5) | ||
| Notes | Overload protection: ranges 200 mV and 600 V DC: 220 V AC RMS; other ranges: 600 V DC or 600 V AC RMS | ||
| AC voltage | ||
| Range | Resolution | Accuracy |
| 200 V | 100 mV | ±(2% +10) |
| 600 V | 1 V | ±(2% +10) |
| Overload protection: 600 V DC or 600 V AC RMS | ||
| Direct current | ||
| Range | Resolution | Accuracy |
| 200 μA | 1 μA | ±(1.8% +2) |
| 2 mA | 1 μA | |
| 20 mA | 10 μA | |
| 200 mA | 100 μA | ±(2.0% +2) |
| 10 A | 10 mA | ±(2.0% +10) |
| Overload protection: fuse 250 mA/250 V; range 10 A, unfused | ||
| Resistance | ||
| Range | Resolution | Accuracy |
| 200 Ω | 0.1 Ω | ±(1.0% +10) |
| 2 kΩ | 1 Ω | ±(1.0% +4) |
| 20 kΩ | 10 Ω | |
| 200 kΩ | 100 Ω | |
| 2 MΩ | 1 kΩ | |
| Open circuit voltage approx. 3 V;Overload protection: 15 sec, max. 220 V AC RMS | ||
| Transistor test | Diode test | ||
| Range | hFE | Measurement conditions | |
| hFE | 0 ~1000 I | _F = 1 mA U | _R = 1.5 V |
| Measurement conditions: I_B = 2 μA; U_CE = 1 V | |||
10 my Accuracy: ±(% of indication + weight of the least signifi cant digit)
OPERATION
CAUTION! To avoid the risk of electric shock, disconnect the test leads and switch off the meter before opening the casing.
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Safety instructions
Do not operate the meter in an atmosphere with excessive humidity or in the presence of toxic or fl ammable vapours, or in an explosive atmosphere. Before each use, check the condition of the meter and the test leads. If you notice any faults, do not start its operation. Replace damaged cables with new ones, devoid of defects. In the case of any doubts, you should contact the manufacturer. During measurement the test leads should be held by the insulated parts. Do not touch the measurement points or unused measuring jacks of the meter. Disconnect the test leads before changing the measured quantity. Never carry out maintenance work without ensuring that the test leads have been disconnected from the meter and that the meter itself has been switched off.
Replacing the battery
The multimeter requires batteries, the number and type of which are specified in the technical specifications. It is recommended to use alkaline batteries. To install a battery, open the instrument casing or the battery compartment cover on the underside of the meter. Before accessing the battery compartment it may be necessary to slide off the cover of the meter casing. Connect the battery according to its terminal marking, close the casing or battery compartment cover. If a battery symbol appears on the screen, the battery must be replaced. For the sake of measurement accuracy, it is recommended to replace the battery as soon as possible after the battery symbol appears.
Fuse replacement
The instrument uses a fast-acting safety fuse. In case of damage, replace the fuse with a new one with identical electrical parameters. To do so, open the meter's casing, following the same procedure as in the case of battery replacement and following the safety rules, replace the fuse with a new one.
S witching the meter on and off
Setting the measurement switch to the OFF position will turn off the meter. The remaining switch positions activate the meter and permit selection of the measured quantity and its range. The meter does not have an auto power-off function after a period of the user's inactivity, therefore you need to remember to switch it off each time after the measurement is finished. This will reduce battery consumption.
HOLD button
The button is used to retain the measured value on the display. When pressed, the button will ensure that the currently displayed value remains on the display, even after the measurement is over. Press the button again to go back to the measurement mode. The operation of this function is indicated on the display with the "H" character.
\* button
The button is used to light up the display of the meter. To switch on the backlight, press the button. The backlight goes off automatically after several seconds.
Connecting test leads
If the test lead plugs are capped, the caps must be removed before plugging the leads into the jacks. Connect the leads in accordance with the instructions in the manual. Now remove the covers (if any) of the measuring parts and proceed with the measurements.
MEASUREMENT PROCEDURE
Depending on the current position of the range switch, the display will show three digits. If the battery needs to be replaced, the multimeter indicates this by showing the battery symbol on the display. If the sign “−” appears on the display before the measured value, it means that it has a reversed polarity relative to the meter's connection. If an overload symbol appears on the display, it means that the measuring range has been exceeded and the measuring range must be changed to a higher one.
If the scale of the measured value is not known, set the highest measurement range and reduce it after reading the measured value. The measurement of small quantities with a high measuring range involves the greatest measurement error. If you select the highest voltage measuring range, the display will show "HV" or a lightning symbol. Special care should be taken when measuring quantities within the highest voltage range to avoid electric shock.
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CAUTION! Never allow the measuring range of the meter to be smaller than the measured value. This can damage the meter and cause electric shock.
The correct connection of the leads is:
The red lead goes in the jack marked "VΩmA" or "10ADC".
The black lead goes in the jack marked "COM".
In order to achieve the highest possible measurement accuracy, optimal measurement conditions should be ensured. The ambient working temperature should be in the range from 18 to 28°C and relative air humidity <75%.
Example of accuracy determination
Accuracy: ± (% of indication + weight of the least signifi cant digit)
Measurement of DC voltage: 1.396 V
Accuracy: ±(0.8% +5)
Calculation of error: 1.396 x 0.8% + 5 x 0.001 = 0.011168 + 0.005 = 0.016168
Measurement result: 1.396 V ± 0.016 V
Voltage measurement
Connect the test leads to the jacks marked "VΩmA" and "COM". Set the range switch to the DC or AC voltage measurement position. Connect the test leads in parallel to an electrical circuit and read the resultant voltage. Never measure a voltage which is higher than the maximum measuring range. This can damage the meter and cause electric shock.
Current measurement
Depending on the expected value of the measured current, connect the test leads to the VΩmA and COM jacks or to the 10A DC and COM jack. Select the appropriate measuring range using the knob. The maximum current measured in the VΩmA jack can be 200 mA. If the current measurement is higher than 200 mA, connect the lead to the 10 ADC jack. The maximum current measured in the 10ADC socket can be 10 A and is not protected by any fuse. Therefore, the measurement time of currents higher than 2 A must not exceed 15 seconds, after which a break of at least 15 minutes must be taken before the next measurement. The VΩmA jack can be loaded with a maximum current of 200 mA. It is forbidden to exceed the maximum values of currents and voltages for a given jack. Test leads must be connected in series to the tested electrical circuit, select the range and type of measured current by means of a switch and read the measurement result. Start by selecting the maximum measuring range. The measuring range can be changed in order to obtain more accurate measurement results.
Resistance measurement
Connect the test leads to the jacks marked "VΩmA" and "COM", set the range switch to the resistance measurement position. Touch the probes to the terminals of the measured element and read the measurement result. In order to obtain more accurate measurement results, change the measuring range if necessary. It is absolutely forbidden to measure the resistance of elements through which electric current is flowing. For measurements greater than 1 MΩ, the measurement may take a few seconds before the readout becomes stable, which is the normal response for high resistance measurements.
Before touching the probes to the workpiece, an overload symbol is shown on the display.
Diode test
Connect the test leads to the jacks marked "VΩmA" and "COM" and set the selector to the diode symbol. The probes are now touched to the diode terminals: once in the forward and then in the reverse direction. If the diode is working, it will show a voltage drop in its forward direction expressed in mV. If connected in the reverse direction, the display will show the overload symbol. Working diodes are characterized by a low resistance in the forward direction and a high resistance in the reverse direction. It is absolutely forbidden to test diodes through which electric current is flowing.
Conduction test
Connect the test leads to the jacks marked "VΩmA" and "COM". Set the selector to the buzzer symbol. If the meter is used to measure conduction, the built-in buzzer will sound whenever the measured resistance drops below 30 Ω. The buzzer can also
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be heard in the range from 30 Ω to 100 Ω. It is absolutely forbidden to test conductivity in circuits through which electric current is flowing.
Transistor test
Set the measuring range switch to the position marked with the "hFE" symbol (transistor gain factor measurement). Depending on the type of transistor you have, choose either the PNP or the NPN socket, taking care to insert the transistor's terminals in holes marked with the letters E – emitter, B – base, C – collector. If the transistor is working and the connection is correct, the result of the gain measurement will be shown on the display. It is absolutely forbidden to test transistors through which electric current is flowing.
MAINTENANCE AND STORAGE
Wipe the meter with a soft cloth. Larger amounts of dirt should be removed with a slightly damp cloth. Do not immerse the product in water or any other liquid. Do not use solvents, corrosive or abrasive agents for cleaning. Care should be taken to keep the contacts of the meter and the test leads clean. Clean the contacts of the test leads with a cloth slightly soaked in isopropyl alcohol. In order to clean the contacts of the meter, turn off the meter and remove the battery. Turn the meter over and shake it gently so that larger pieces of dirt fall out of the meter connectors. Lightly soak a cotton stick with isopropyl alcohol and clean each contact. Wait until the alcohol evaporates, then install the battery. The meter should be stored in a dry room in the supplied unit packaging.
MERKMALE DES GERÄTES
Fusibile: F0,5A/250V
