The Extech MA1500 is a 1500Amp True RMS AC/DC Clamp Meter designed for heavy-duty use, offering a comprehensive range of measurement capabilities.
Function Description:
This clamp meter measures AC Current, DC Current, AC/DC Voltage, Resistance, Capacitance, Frequency, Diode Test, Duty Cycle, and Continuity. It features a non-contact voltage detector for safety and an inrush current measurement function to capture transient conditions during motor start-up. The meter also includes MAX/MIN recording mode to display maximum and minimum measured values, and a Peak Hold function to capture waveform peaks. Temperature measurements are supported via a Type K thermocouple.
Important Technical Specifications:
- Current Measurement:
- DC Current: 400.00 ADC (±2.0% +30 digits), 1500.0 ADC (±2.5% +30 digits)
- AC Current (True RMS, 50Hz to 60Hz): 400.00 AAC (±2.8% +30 digits), 1500.0 AAC (±2.8% +30 digits). All AC current ranges are specified from 5% to 100% of range.
- Voltage Measurement:
- DC Voltage: 400.00 mVDC (±0.1% + 5 digits), 4.0000 VDC, 40.000 VDC, 400.00 VDC (all ±0.1% + 4 digits), 1000.0 VDC (±0.5% + 4 digits)
- AC Voltage (True RMS, 50Hz to 1000Hz): 400.00 mVAC, 4.0000 VAC, 40.000 VAC (all ±0.8% + 40 digits (50/60Hz)), 400.00 VAC, 750.0 VAC (all ±1.0% + 30 digits). All AC voltage ranges are specified from 5% to 100% of range.
- Resistance: 400.00 Ω (±0.5% + 9 digits), 4.0000 KΩ, 40.000 KΩ (all ±1.0% + 4 digits), 400.00 KΩ, 4.0000 MΩ (±2.0% + 10 digits), 40.000 MΩ (±3.0% + 10 digits)
- Capacitance: 400.00 nF, 4000.0 nF (all ±(3.5% reading + 40 digits)), 40.00 µF, 400.0 µF (all ±(3.5% reading + 10 digits)), 4.000 mF, 20.00 mF (all ±(5% reading + 10 digits)), 40.00 mF (Not specified)
- Frequency: 40.000 Hz, 400.00 Hz, 4.0000 kHz, 40.000 kHz, 400.00 kHz, 4.0000 MHz, 40.000 MHz (all ±(0.3% reading + 2 digits)). Sensitivity: 0.8V rms min. @ 20% to 80% duty cycle and <100kHz; 5Vrms min @ 20% to 80% duty cycle and > 100kHz.
- Duty Cycle: 10.0 to 95.0% (±(1.0% reading + 2 digits)). Pulse width: 100µs - 100ms, Frequency: 10Hz to 100kHz.
- Temperature (Type-K): -100.0 to 1000.0°C (±(1.0% reading + 2.5 °C)), -148.0 to 1832.0°F (±(1.0% reading + 4.5°F)). (Probe accuracy not included).
- General Specifications:
- Clamp jaw opening: 52mm (2.0") approx.
- Display: Dual 40,000/4,000 count backlit LCD
- Continuity check: Threshold 25 to 60Ω; Test current < 0.5mA
- Diode test: Test current of 0.3mA typical; Open circuit voltage 2.8VDC typical
- Low Battery indication: Battery symbol is displayed
- Over-range indication: 'OL' display
- Measurement rate: 2 readings per second, nominal
- Peak detector: >1ms
- Thermocouple sensor: Type K thermocouple required
- Input Impedance: 10MΩ (VDC and VAC)
- AC bandwidth: 50 to 400Hz (AAC and VAC)
- AC response: True rms (AAC and VAC)
- Crest Factor: 3.0 in 400A range, 1.4 in 1000A range (50/60Hz and 5% to 100% of range)
- Operating Temperature: 5°C to 40°C (41°F to 104°F)
- Storage Temperature: -20°C to 60°C (-4°F to 140°F)
- Operating Humidity: Max 80% up to 31°C (87°F) decreasing linearly to 50% at 40°C (104°F)
- Storage Humidity: <80%
- Operating Altitude: 2000 meters (7000ft.) maximum.
- Battery: One (1) 9V Battery (NEDA 1604)
- Auto power OFF: After approx. 30 minutes
- Dimensions & Weight: 294x105x47mm (11.57x4.13x1.85"); 536g (18.9 oz)
- Safety: For indoor use and in accordance with the requirements for double insulation to IEC1010-1 (2001): EN61010-1 (2001) Overvoltage Category IV 600V and Category III 1000V, Pollution Degree 2.
- Approvals: CE
Usage Features:
- Non-Contact Voltage Detector: Allows for quick and safe detection of AC voltage without direct contact.
- AC/DC Current Measurements: Measures current by clamping around a single conductor. Includes a DCA Zero feature to remove offset values and improve accuracy for DC current measurements.
- AC/DC Voltage Measurements: Utilizes test leads for voltage measurements.
- Resistance Measurements: Measures resistance, requiring power to be removed from the device under test.
- Continuity Test: Provides an audible tone when resistance is below a certain threshold.
- Diode Test: Checks the functionality of diodes and semiconductor junctions.
- Capacitance Measurements: Measures capacitance, with a ZERO feature to remove stray test lead capacitance for improved accuracy.
- Frequency and Duty Ratio Measurements: Displays frequency and duty ratio for selected AC measurements.
- Type K Temperature Measurements: Measures temperature using a Type K thermocouple probe.
- Data Hold: Freezes the LCD reading for convenient viewing.
- Max/Min Recording: Records and displays maximum and minimum values during a measurement session.
- Peak Hold: Captures and displays the maximum and minimum peaks of a waveform.
- Inrush Current: Captures transient current conditions, typically during motor start-up.
- Range Selection: Features autoranging, but also allows for manual range selection for specific measurement situations.
- LCD Backlight: Provides illumination for easier viewing in dimly lit areas.
- Automatic Power OFF (APO): Automatically turns off after approximately 30 minutes to conserve battery life. This feature can be disabled.
- Low Battery Indication: An icon appears on the display to indicate when the battery needs replacement.
Maintenance Features:
- Cleaning: The case can be periodically wiped with a damp cloth and mild detergent. Abrasives or solvents should not be used.
- Storage: If the meter is to be stored for more than 60 days, the battery should be removed.
- Battery Replacement: The 9V battery can be easily replaced by removing a Phillips head screw to access the battery compartment.
- Safety Precautions: Emphasizes disconnecting the meter from any circuit, removing test leads, and turning off the meter before opening the case to avoid electrical shock. The meter should not be operated with an open case.
- Disposal: Instructions for proper disposal of used batteries and the instrument itself are provided, adhering to environmental regulations.
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