1. Uvod
The PEAKMETER PM8250 is a professional handheld digital multimeter designed for accurate and reliable electrical measurements, particularly in photovoltaic (PV) systems. It features a high DC voltage measurement capability up to 1700V, auto and manual ranging, and various functions including AC/DC voltage, current, resistance, capacitance, frequency, temperature, and specialized functions like LPF, MAX/MIN/PEAK, Continuity, Diode, and NCV detection. This manual provides essential information for the safe and effective operation of your PM8250 multimeter.

Slika 1: Prednja strana view of the PEAKMETER PM8250 Multimeter, showing the display, rotary switch, and function buttons.
2. Sigurnosne informacije
To ensure safe operation and service of the multimeter, follow these safety precautions:
- Uvijek se pridržavajte lokalnih i nacionalnih sigurnosnih propisa.
- Ne koristite mjerač ako izgleda oštećeno ili ako je kućište otvoreno.
- Verify the meter's operation by measuring a known voltage or current before use.
- Observe the input limits for each measurement range. The maximum DC voltage je 1700V.
- Budite oprezni kada radite sa voltagiznad 60V DC ili 30V AC RMS, jer predstavljaju opasnost od strujnog udara.
- Provjerite jesu li mjerni kabeli u dobrom stanju i pravilno spojeni.
- Zamijenite baterije čim se pojavi indikator slabe baterije kako biste izbjegli netačna očitavanja.
- The device complies with safety ratings EN61010-1, EN61010-2-030, EN61326, and CAT III 1000V.
3. Značajke proizvoda
The PM8250 multimeter offers a range of features for versatile measurement:
- Prikaz: Digitalni displej sa 6000 brojeva.
- Rasponu: Automatic and Manual range selection.
- Visok voltage DC: Mere DC voltage up to 1700V, suitable for photovoltaic panels.
- Relativno mjerenje: Mjeri razliku između pohranjene vrijednosti i trenutnog očitavanja.
- MAX/MIN/PEAK: Records maximum, minimum, and peak values during a measurement session.
- LPF (niskopropusni filter): Filters out high-frequency interference for accurate AC voltage measurements in variable frequency drive (VFD) environments.
- Test kontinuiteta: Zvučna indikacija za kontinuitet strujnog kola.
- Diodni test: Checks diode functionality.
- NCV (Non-Contact Voltage) Detekcija: Otkriva AC voltage bez direktnog kontakta.
- Mjerenje temperature: Measures temperature using a K-type probe.
- Automatsko isključivanje: Automatically powers off after approximately 10 minutes of inactivity to conserve battery life.
- Pozadinsko osvjetljenje: Osvjetljava ekran za upotrebu u uslovima slabog osvjetljenja.
- Zadržavanje podataka: Zamrzava trenutno očitavanje na ekranu.
4. Podešavanje
4.1 Instalacija baterije
The PM8250 requires four 1.5V AA batteries for operation. To install or replace batteries:
- Provjerite je li multimetar isključen iz napajanja i da li su mjerni kablovi odvojene.
- Pronađite poklopac odjeljka za baterije na stražnjoj strani mjerača.
- Odvrnite vijak(e) za pričvršćivanje i skinite poklopac.
- Insert four 1.5V AA batteries, observing the correct polarity (+/-) as indicated inside the compartment.
- Vratite poklopac odjeljka za baterije i pričvrstite ga vijkom (vijcima).
4.2 Spajanje mjernih kabela
Connect the test leads to the appropriate input jacks for your desired measurement:
- Umetnite crni test kabl u COM (Obični) priključak.
- Za voltage, resistance, capacitance, frequency, diode, continuity, and temperature measurements, insert the red test lead into the VΩHzTemp Jack.
- Za mjerenja struje do 600mA, umetnite crveni mjerni kabel u mA Jack.
- Za mjerenja struje do 10A, umetnite crveni mjerni kabel u 10A jack (if applicable, refer to meter markings).

Slika 2: Natrag view of the multimeter showing the battery compartment and test lead connections.
5. Uputstvo za upotrebu
To operate the multimeter, turn the rotary switch to the desired function. The meter will typically default to auto-ranging. Press the 'RANGE' button to switch between auto and manual ranging if needed.
5.1 DC VoltagMjerenje (V–)
Za mjerenje DC voltage, including high voltage PV systems:
- Okretni prekidač postavite na V– position (1700V range).
- Spojite mjerne kabele paralelno s krugom ili komponentom koja se testira.
- Pročitajte voltage vrijednost na ekranu.

Slika 3: Mjerenje DC voltažetage of a battery using the multimeter.
5.2 AC VoltagMjerenje e (V∼)
Za mjerenje AC voltage:
- Okretni prekidač postavite na V∼ pozicija.
- Connect the test leads in parallel to the AC source.
- Pročitajte voltage vrijednost na ekranu.
- Pritisnite LPF button to activate the Low Pass Filter for measurements in noisy environments (e.g., VFD outputs).
5.3 Mjerenje otpora (Ω)
Za mjerenje otpora:
- Okretni prekidač postavite na Ω pozicija.
- Ensure the circuit is de-energized before connecting the test leads across the component.
- Očitajte vrijednost otpora na zaslonu.

Figure 4: Measuring resistance using the multimeter.
5.4 Current Measurement (mA/A)
To measure DC or AC current:
- Okretni prekidač postavite na mA or A pozicija. Koristiti FUNC button to select AC or DC current.
- Connect the test leads in series with the circuit. Ensure the correct input jack (mA or 10A) is used.
- Očitajte trenutnu vrijednost na displeju.
- Oprez: Never connect the meter in parallel when measuring current, as this can blow the fuse or damage the meter.
5.5 Temperature Measurement (Temp)
Za mjerenje temperature:
- Okretni prekidač postavite na Temp pozicija.
- Insert the K-type thermocouple probe into the VΩHzTemp i COM utičnice.
- Place the thermocouple tip on the object to be measured.
- Press the ℃/℉ button to switch between Celsius and Fahrenheit units.
5.6 Ostale funkcije
- Continuity/Diode: Set the rotary switch to the continuity/diode position. Use the FUNC button to toggle between modes.
- NCV: Okretni prekidač postavite na NCV position. Bring the top of the meter near an AC voltage source to detect its presence.
- MAX/MIN/PEAK: Pritisnite MAX/MIN/PEAK button to cycle through maximum, minimum, and peak hold readings.
- Relativno: Pritisnite REL button to store the current reading as a reference and display subsequent measurements relative to it.
- Zadržavanje podataka: Pritisnite HOLD button to freeze the current display reading. Press again to release.
- Pozadinsko osvjetljenje: Press the backlight button (often combined with another function) to turn the display backlight on/off.
6. Održavanje
6.1 Čišćenje
Obrišite kućište oglasomamp krpu i blagi deterdžent. Ne koristite abrazivna sredstva ili rastvarače. Prije upotrebe provjerite je li mjerač suh.
6.2 Zamjena baterije
Zamijenite baterije kada se na ekranu pojavi indikator slabe baterije. Za upute pogledajte Odjeljak 4.1.
6.3 Zamjena osigurača
If the current measurement function fails, the fuse may need replacement. The meter uses a 600mA FUSED input for mA ranges and a 10A MAX input for higher current ranges. Fuse replacement should only be performed by qualified personnel. Use only fuses of the specified type and rating.
6.4 Skladištenje
If the meter is not used for an extended period, remove the batteries to prevent leakage and damage.
7. Otkrivanje problema
- Bez prikaza: Provjerite ugradnju baterija i napunite ih. Zamijenite baterije ako je potrebno.
- Netačna očitanja: Ensure test leads are properly connected and not damaged. Verify the correct function and range are selected. Check for blown fuses in current modes.
- Automatsko isključivanje: This is a normal function. Press any button or turn the rotary switch to reactivate the meter.
8. Specifikacije
| Measurement | Domet | Preciznost |
|---|---|---|
| DC Voltage | 600mV/6V/60V/600V/1700V | ±(0.8%+3) |
| AC Voltage | 600mV/6V/60V/600V/1000V | ±(1.0%+3) |
| DC Current | 60mA / 600mA | ±(1.2%+3) |
| AC struja | 60mA / 600mA | ±(1.5%+3) |
| Otpor | 600Ω/6kΩ/60kΩ/600kΩ/6MΩ | ±(1.2%+5) |
| 60MΩ | ±(2.0%+5) | |
| Kapacitet | 10nF/100nF/1µF/10µF/100µF | ±(3.0%+5) |
| 1mF/10mF | ±(4.0%+5) | |
| 100mF | ±(5.0%+5) | |
| Frekvencija | 10Hz do 10MHz | ±(1.0%+5) |
| Duty Cycle | 5%~95% | ±(3.0%+5) |
| Temperatura | -20℃~1000℃ (-4℉~1832℉) | ±(2.0%+2) |
Opće specifikacije:
- Prikaz: 6000 counts
- Napajanje: 4 x 1.5 V AA baterije
- Veličina: 204 mm x 94 mm x 57 mm
- Težina: Pribl. 410g
- Sigurnosna ocjena: EN61010-1, EN61010-2-030, EN61326, CAT III 1000V
- Automatsko isključivanje: After about 10 minutes of no operation
- Maksimalna radna zapreminatage: 1700 volti (DC)
- Gornja temperaturna ocjena: 60 stepeni Celzijusa

Figure 5: Detailed specifications table for the PM8250 multimeter.
9. Garancija i podrška
The PEAKMETER PM8250 multimeter comes with an EU Spare Part Availability Duration of 1 year. For warranty claims, technical support, or service inquiries, please contact your original point of purchase or the manufacturer directly. Keep your purchase receipt as proof of purchase.