Mastech MS2125A AC/DC Clamp Meter
Model: MS2125A
SKU: MS2125ACBGLO
Important Safety Precautions ⚠️
Read and understand all safety information before using this instrument. Improper use can lead to electric shock ⚡ or equipment damage.
- Always use test leads, probes, and adapters rated for the measurement category (CAT), voltage, and amperage required. This meter is rated CAT IV 600V and CAT III 1000V.
- Never use the device in environments with explosive gases, vapors, or under high temperature and humidity.
- Keep fingers behind the physical guards when handling test probes and crocodile clips.
- Inspect test leads for any signs of damage or deterioration before each use. Replace damaged leads immediately with proper functional ones.
- When connecting test leads, connect the common (black) lead first, then the live (red) lead. When disconnecting, remove the live lead first, then the common lead.
- Before measuring current, ensure the instrument's fuses are intact and disconnect power to the circuit being tested.
- Remove batteries ? if the device will not be used for an extended period or if stored in temperatures above 45°C (113°F) to prevent battery leakage and damage.
Specifications
| Range (Rango / Intervalle / 量程 / Диапазон) | Resolution (Resolución / Résolution / 解析度 / Разрешение) | Accuracy (Exactitud / Précision / 準確性 / Точность) |
|---|---|---|
| AC Voltage (V~) 60mV/600mV/6V/60V/600V | 0.01mV/0.1mV/0.001V/0.01V/0.1V | ±(0.6%+5) |
| AC Voltage (V~) 750V | 1V | ±(0.8%+4) |
| DC Voltage (V=) 60mV/600mV/6V/60V/600V | 0.01mV/0.1mV/0.001V/0.01V/0.1V | ±(0.5%+5) |
| DC Voltage (V=) 1000V | 1V | ±(0.8%+4) |
| AC/DC Current (A~ / A=) 60A/600A/1000A | 0.01A/0.1A/1A | ±(2.0%+8) |
| AC/DC Current (A~ / A=) 60A/600A/1000A | 0.01A/0.1A/1A | ±(2.0%+5) |
| Resistance (Ω) 600Ω/6kΩ/60kΩ/600kΩ/6MΩ/60MΩ | 0.1Ω/0.001kΩ/0.01kΩ/0.1kΩ/0.001MΩ/0.01MΩ | ±(0.8%+3) / ±(2.0%+5) |
| Capacitance (C) 10nF/100nF/1000nF/10μF, 100μF/1000μF/10mF/100mF | 0.001nF/0.01nF/0.1nF/0.001μF, 0.01μF/0.1μF/0.001mF/0.01mF | ±(3.0%+5) |
| Frequency (Hz) 100Hz/1000Hz | 0.01Hz/0.1Hz/ | ±(1.5%+5) |
| Duty Cycle (Hz%) 0.1%~99.9% | 0.1% | ±(3.0%) |
Basic Operation Guides
DC/AC Voltage Measurement (V= / V~)
- Connect the COM (black) probe to the COM input and the red probe to the VΩmA input on the meter.
- Turn the dial to the desired DC Voltage (V=) or AC Voltage (V~) setting.
- Connect the probes across the component or circuit to be measured (COM to negative, red probe to positive).
- Read the voltage value on the display.
[Diagram Description: Shows meter with COM and INPUT jacks, dial set to V= or V~, probes connected to a circuit with polarity indicated.]
DC/AC Current Measurement (A= / A~)
- Turn the dial to the desired DC Current (A=) or AC Current (A~) setting.
- Press the [FUNC] button to select DCA or ACA mode.
- Open the clamp jaws around one conductor of the circuit. Ensure the conductor is centered within the jaws.
- Read the current value on the display.
[Diagram Description: Shows meter with dial set to A= or A~, [FUNC] button pressed, and clamp jaws around a single wire.]
Resistance (Ω), Continuity (?), and Diode Measurement
- Connect the COM (black) probe to the COM input and the red probe to the VΩmA input.
- Turn the dial to the Resistance (Ω) setting.
- Press the [FUNC] button to cycle through Resistance (Ω), Continuity (?), or Diode mode.
- For Resistance: Connect probes across the component.
- For Continuity: If resistance is below approximately 50Ω, the meter will beep (?).
- For Diode: Connect probes to the diode leads (polarity matters).
[Diagram Description: Shows meter with COM and INPUT jacks, dial set to Ω, [FUNC] button used to select modes, and probes connected to a resistor or component. A separate visual indicates the continuity beep symbol.]
Capacitance (μF) and Frequency (Hz) Measurement
- Connect the COM (black) probe to the COM input and the red probe to the VΩmA input.
- Turn the dial to the Capacitance (μF) or Frequency (Hz) setting.
- Connect the probes to the capacitor or signal source. Observe polarity for capacitors if applicable.
- Read the capacitance or frequency value on the display.
[Diagram Description: Shows meter with COM and INPUT jacks, dial set to Hz or μF, and probes connected to a capacitor or signal source.]
Non-Contact Voltage (NCV) Detection
- Turn the dial to the NCV setting.
- Bring the sensor tip of the clamp meter near an AC voltage source (e.g., power outlet, wire).
- The meter will beep (?) and/or flash if AC voltage is detected.
[Diagram Description: Shows the clamp meter with its sensor tip held near a power outlet, indicating NCV detection with a beep/light symbol.]
Product Information
Brand: Mastech
Model: MS2125A
Type: AC/DC Clamp Meter
SKU: MS2125ACBGLO
Certifications: CAT IV 600V, CAT III 1000V, CE, EAC
Warranty: 1 Year Limited Warranty
Manufacturer/Distributor Information:
- EMEA: MGL EUMAN S.L. (Spain)
- USA: MGL AMERICA, INC. (USA)
- United Kingdom: MGL GROUP U.K. LIMITED (UK)
- Mexico & LATAM: MGL LATAM S.A DE CV (Mexico)
- APAC: MGL APPA Corporation (Taiwan)
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