MESTEK CM85C

MESTEK CM85C Digital Clamp Instruktionsmanual til måleren

Model: CM85C

1. Vigtige sikkerhedsoplysninger

Please read and understand all safety information and operating instructions before using this MESTEK CM85C Digital Clamp Måler. Manglende overholdelse af disse instruktioner kan resultere i elektrisk stød, brand eller alvorlig personskade.

  • This device complies with IEC 61010-1, CAT III 600V safety standards. Always adhere to these safety ratings.
  • All measurement ranges are equipped with overload protection. However, do not exceed the maximum input values specified for each function.
  • Before each use, inspect the test leads for any damage. Do not use if insulation is cracked or if the connectors are exposed.
  • Påfør ikke mere end den nominelle voltage, som markeret på måleren, mellem terminalerne eller mellem en hvilken som helst terminal og jord.
  • Vær forsigtig, når du arbejder med voltagover 30V AC RMS, 42V peak eller 60V DC. Disse voluminertages udgør en stødfare.
  • Sørg altid for, at måleren er indstillet til den korrekte funktion og det korrekte område, før du foretager en måling.
  • Ved strømmåling med clamp, ensure only one conductor is enclosed within the clamp kæber.
  • The Non-Contact Voltage (NCV) test can detect voltage without direct contact, reducing the risk of electric shock.
  • Udskift batterierne med det samme, når indikatoren for lavt batteri vises, for at sikre nøjagtige aflæsninger.

2. Produktet er slutview

The MESTEK CM85C is a compact, auto-ranging digital clamp meter designed for precise electrical measurements in various applications, including automotive and household electrical maintenance. It features True-RMS measurement for accurate readings on non-sinusoidal waveforms.

Nøglefunktioner:

  • Mål AC/DC Voltage op til 600V.
  • Measures AC/DC Current up to 100A via clamp.
  • Resistance, Capacitance, Frequency, Diode, and Continuity tests.
  • Temperature measurement with included thermocouple (in Celsius and Fahrenheit).
  • Non-Contact Voltage (NCV) detektion for øget sikkerhed.
  • True-RMS 1999 count display for accurate measurements.
  • Automatisk områdeindstilling for forenklet betjening.
  • Data Hold-funktion til at fryse aflæsninger.
  • DC current zeroing function (Z key).
  • Baggrundsbelysning for synlighed under svagt lys.
  • Automatic power-off after 10 minutes of inactivity to conserve battery.
  • Indikator for lavt batteri.
MESTEK CM85C Digital Clamp Meter with labeled parts and dimensions

Figure 2.1: MESTEK CM85C Clamp Meter with labeled components and dimensions (165mm height, 56mm width, 31mm depth). Key parts include NCV Induction Probe, AC/DC current sensing jaws, Feature selection dial, HD display, ZERO button, Backlight/HOLD button, and Function selection button.

3. Hvad er der i æsken

Når du åbner pakken, skal du kontrollere, at alle følgende varer er inkluderet:

  • MESTEK CM85C Digital Clamp Måler
  • AAA batterier (x2)
  • Test Leads (red and black)
  • K-type termoelement temperaturføler
  • Stof bæretaske
  • Brugermanual
Contents of the MESTEK CM85C package including the clamp meter, test leads, temperature probe, batteries, and user manual.

Figure 3.1: Included components of the MESTEK CM85C Clamp Meter kit.

4. Opsætning

4.1 Batteriinstallation

  1. Find batteridækslet på bagsiden af ​​måleren.
  2. Brug en skruetrækker til at åbne batterirummet.
  3. Insert two AAA batteries, observing the correct polarity (+ and -).
  4. Sæt batterirummets dæksel på igen og fastgør det med skruen.

4.2 Tilslutning af testledninger

For de fleste volumenertage, resistance, capacitance, diode, continuity, frequency, and temperature measurements, test leads are required.

  • Indsæt den sorte testledning i KOM (Fælles) indgangsstik.
  • Indsæt den røde testledning i INPUT stik.

5. Betjening

The MESTEK CM85C features a rotary dial for function selection and dedicated buttons for additional features.

5.1 Funktionsvalg

Turn the rotary dial to select the desired measurement function. The meter will automatically select the appropriate range (auto-ranging) for most functions.

MESTEK CM85C Clamp Meter performing various measurements: battery voltage, AC voltage, capacitance, and resistance.

Figur 5.1: Eksamples of the CM85C performing battery voltage, AC voltage, capacitance, and resistance measurements.

5.2 AC/DC Voltage Måling (V~)

  1. Indstil drejeknappen til V~ position.
  2. Tilslut testledningerne parallelt til det kredsløb eller den komponent, der testes.
  3. Læs bindtage value on the display. The meter will automatically detect AC or DC voltage.
MESTEK CM85C Clamp Måler, der måler DC voltage på et bilbatteri.

Figur 5.2: Måling af DC-volumentage on a car battery using the test leads.

5.3 AC/DC Current Measurement (A~, A=)

This function uses the clamp jaws to measure current without breaking the circuit.

  1. Indstil drejeknappen til A~ or A= position (for AC or DC current respectively).
  2. Tryk på clamp aftrækkeren for at åbne kæberne.
  3. Vedlæg kun one single conductor within the clamp kæber. Luk ikkeamp around multiple wires, as this will result in an inaccurate reading.
  4. For måling af jævnstrøm skal du trykke på Z (Zero) button before clamping to eliminate any residual magnetic field and ensure accurate readings.
  5. Aflæs den aktuelle værdi på displayet.
MESTEK CM85C Clamp Meter measuring DC current on a car battery cable and AC current on a household electrical wire.

Figure 5.3: Top image shows DC current measurement on a car battery cable. Bottom image shows AC current measurement on a household electrical wire.

MESTEK CM85C Clamp Meter measuring DC current on a red wire, showing the 25mm maximum jaw opening.

Figure 5.4: DC current measurement using the clamp function, highlighting the 25mm maximum jaw opening.

5.4 Modstandsmåling (Ω)

  1. Indstil drejeknappen til Ω position.
  2. Sørg for, at kredsløbet eller komponenten er spændingsfri, før du tilslutter testledningerne.
  3. Tilslut testledningerne på tværs af den komponent, der skal måles.
  4. Læs modstandsværdien på displayet.

5.5 Capacitance Measurement (∔)

  1. Indstil drejeknappen til position.
  2. Sørg for, at kondensatoren er helt afladet, før du tilslutter testledningerne.
  3. Tilslut testledningerne på tværs af kondensatorterminalerne.
  4. Læs kapacitansværdien på displayet.

5.6 Diodetest (→|)

  1. Indstil drejeknappen til →| position.
  2. Tilslut den røde testledning til anoden og den sorte testledning til katoden på dioden.
  3. Læs videre bindtage drop on the display. Reverse the leads to check for open circuit (OL) indication.

5.7 Continuity Test (•)))

  1. Indstil drejeknappen til •))) position.
  2. Sørg for, at kredsløbet eller komponenten er spændingsløs.
  3. Tilslut testledningerne på tværs af kredsløbet eller komponenten.
  4. If the resistance is less than approximately 50Ω, the meter will emit an audible beep, indicating continuity.

5.8 Temperaturmåling (℃/℉)

  1. Indstil drejeknappen til ℃ / ℉ position.
  2. Connect the K-type thermocouple probe to the INPUT and COM jacks, observing polarity.
  3. Place the tip of the thermocouple on or in the object whose temperature is to be measured.
  4. Aflæs temperaturen på displayet. Tryk på SEL -knappen for at skifte mellem Celsius (℃) og Fahrenheit (℉).
MESTEK CM85C Clamp Meter measuring water temperature with a thermocouple probe.

Figure 5.5: Measuring liquid temperature using the K-type thermocouple probe.

5.9 Non-Contact Voltage (NCV) Detektion

NCV-funktionen muliggør sikker detektion af AC-volumentage without direct contact with live conductors.

  1. Indstil drejeknappen til NCV position.
  2. Bring the top part of the meter (NCV sensor) close to the conductor or outlet you suspect has AC voltage.
  3. The meter will emit an audible beep and the NCV indicator light will flash, indicating the presence of AC voltage.
MESTEK CM85C Clamp Måler, der registrerer berøringsfri volumentagi nærheden af ​​en stikkontakt.

Figure 5.6: NCV detection near an electrical outlet, indicated by flashing lights and an audible alert.

5.10 Datahold (HOLD)

Tryk på H knappen for at fryse den aktuelle aflæsning på displayet. Tryk igen for at deaktivere hold-funktionen.

5.11 Baggrundslys

Press the backlight button (often integrated with the H button, indicated by a light icon) to turn the display backlight on or off. This improves visibility in dimly lit environments.

5.12 Automatisk slukning

The meter will automatically power off after approximately 10 minutes of inactivity to conserve battery life. To reactivate, turn the rotary dial to OFF and then back to the desired function.

5.13 Indikator for lavt batteri

A battery symbol will appear on the display when the battery voltage is low. Replace the batteries promptly to ensure accurate measurements.

6. Vedligeholdelse

6.1 Rengøring

Tør måleren c afasing med annonceamp klud og mildt rengøringsmiddel. Brug ikke slibemidler eller opløsningsmidler. Sørg for, at måleren er helt tør før brug.

6.2 Udskiftning af batteri

When the low battery indicator appears, replace the two AAA batteries as described in Section 4.1. Remove batteries if the meter will not be used for an extended period.

6.3 Opbevaring

Store the meter in its cloth carrying bag in a cool, dry place, away from direct sunlight and extreme temperatures.

7. Fejlfinding

ProblemMulig årsagLøsning
Intet display eller svagt displayLave eller døde batterier; Forkert batteriinstallationUdskift batterier; Kontroller batteripolariteten
Unøjagtige aflæsningerIncorrect function/range selected; Poor test lead connection; External interference; DC current not zeroedVerify rotary dial setting; Ensure firm lead connection; Move away from strong electromagnetic fields; Press Z button for DC current
Ingen kontinuitetsbipCircuit is open; Resistance is too high; Faulty test leadsCheck circuit for breaks; Note that continuity typically triggers below 50Ω; Test leads on a known short circuit
NCV registrerer ikke volumentageVoltage too low; Sensor not close enough; Shielded wireSørg for voltage is present and sufficient; Bring sensor closer; NCV may not detect through heavy shielding

8. Specifikationer

MålefunktionRækkeviddeNøjagtighed
DC bindtage2V/20V/200V/600V±(0.5 %+3)
AC Voltage2V/20V/200V/600V±(1.0 %+3)
DC-strøm (Clamp)2A/20A/100A±(2.5%+6) for 2A; ±(3.0%+6) for 20A/100A
AC-strøm (Clamp)2A/20A/100A±(2.5%+6) for 2A; ±(3.0%+6) for 20A/100A
Modstand200Ω/2kΩ/20kΩ/200kΩ/2MΩ/20MΩ±(0.8 %+3)
Kapacitans200nF/2uF/20uF/200uF/2000uF±(3.5 %+15)
Frekvens40Hz-400HzNot specified (typical for range)
Temperatur-20℃~1000℃ (-4℉~1832℉)±(2.0 %+2)
Kontinuitet BuzzerModstand < 50ΩHørbart bip
  • Vise: 1999 Counts, True-RMS
  • Kæbeåbning: 25 mm (maksimum)
  • Overbelastningsbeskyttelse: Full-scale protection on all ranges
  • Strømkilde: 2 x AAA batterier
  • Automatisk sluk: Cirka 10 minutters inaktivitet
  • Dimensioner: 16.5 x 5.6 x 3.1 cm
  • Vægt: 333 gram
  • Sikkerhedsvurdering: IEC 61010-1, CAT III 600V
  • Certificeringer: CE, EMC, FCC, RoHS

9. Garantioplysninger

This MESTEK CM85C Digital Clamp Måleren leveres med en 2 års garanti fra købsdatoen. Denne garanti dækker fejl i materialer og udførelse ved normal brug.

The warranty does not cover damage caused by misuse, accident, unauthorized modification, neglect, or improper operation. For warranty claims or technical support, please contact MESTEK customer service through your original point of purchase or visit the official MESTEK webwebsted for kontaktoplysninger.

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