Ultra Flex Clamp Meter (CMF-3200) Double Insulation Coil

Lutron Ultra Flex Clamp Meter (CMF-3200) Double Insulation Coil

Lutron CMF-3200 True RMS Flexible Clamp Meter, 3000A

The Lutron CMF-3200 is a true RMS flexible clamp meter that measures up to 3,000 amps AC through a double insulated flexible coil, letting it reach around bus bars, cable bundles and awkward conductors that a rigid jaw cannot. Alongside current it measures DC and AC voltage, resistance, capacitance, diode and continuity. A smart function reduces the meter to three positions — V, Ω and A — and selects the correct measurement and range automatically within each. The meter uses a 6,000 count A/D converter and meets IEC 1010 CAT III 1000 V.

This instrument is rated CAT III 1000 V and is intended for use by qualified personnel. Always use the supplied CAT III 1000 V test leads, and discharge capacitors before testing them.

• Meets IEC 1010 CAT III 1000 V safety requirements.
• True RMS measurement.
• Double insulated flexible coil.
• 6,000 count A/D converter for high resolution.
• Measures AC current, DC voltage, AC voltage, resistance, capacitance, diode and continuity.
• Smart function with auto ranging, built around three positions: V, Ω and A.
• The V position selects DC or AC voltage automatically, with auto ranging.
• The Ω position selects resistance, diode, continuity beeper or capacitance automatically, with auto ranging.
• The A position selects the 600A or 3000A range automatically.
• Data hold function freezes the display reading.
• 10 MΩ input impedance on the voltage circuit.
• Built-in overload protection on most ranges.
• LSI circuit provides high reliability and durability.
• Durable, long lasting components in a strong, lightweight ABS plastic housing.
• Auto shut off saves battery life.

Specifications

Display	LCD, 33.5 mm x 18.7 mm.
Measurement	DC voltage, AC voltage, AC current, resistance, capacitance, diode, continuity beeper.
A/D counts	6,000 counts.
Smart function	The V position selects AC or DC voltage automatically, with auto ranging.
	The Ω position selects resistance, diode, continuity beeper or capacitance automatically, with auto ranging.
	The A position selects the 600A or 3000A range automatically.
Selection	Smart function or auto function.
Data hold	Freezes the reading on the display.
Polarity	Automatic switching. A minus sign indicates negative polarity.
Sampling time	Approximately 0.5 to 1 second.
Power on/off management	Auto power off or manual power off.
Flexible cable length	300 mm
Flexible cable diameter	8 mm
Operating temperature	0 to 50 °C (32 to 122 °F)
Operating humidity	Max. 80% RH
Power supply	DC 1.5V battery (UM-4, AAA) x 2 pcs.
Power consumption	Approximately DC 16.1 mA.

Electrical Specifications

Specifications apply at 23 ± 5 °C. In the accuracy figures below, "digits" refers to counts of the least significant digit.

AC Current (True RMS)

Measurement range	0.1 A to 3,000 A
Ranges	600 A / 3000 A
Resolution	0.1 A / 1 A
Accuracy	600 A range: ± (1% + 8 digits)
	3000 A range: ± (1% + 10 digits)
Linearity	± 0.2% of reading, from 10% to 100% of range value.
Conductor position sensitivity	± 2% of reading, when the measured conductor is more than 25 mm (1") from the center of the coil.
External field influence	Increases by ± 1.5% of range value maximum. A separation of more than 200 mm between flexible current probes is recommended.

Accuracy is specified with the measured conductor positioned at the center of the flexible current probe. AC current specifications are tested on a 50/60 Hz sine wave.

DC Voltage

Ranges	6 V / 60 V / 600 V / 1000 V
Resolution	0.001 V / 0.01 V / 0.1 V / 1 V
Accuracy	± (0.8% + 5 digits)
Input impedance	10 MΩ
Overload protection	± 1000 V DC, 1000 V AC

AC Voltage (True RMS)

Ranges	6 V / 60 V / 600 V / 1000 V
Resolution	0.001 V / 0.01 V / 0.1 V / 1 V
Accuracy	± (1% + 8 digits), tested at 50/60 Hz.
Input impedance	10 MΩ
Overload protection	± 1000 V DC, 1000 V AC
Smart function threshold	Must be greater than 300 mV AC.

Resistance

Ranges	600 Ω / 6 kΩ / 60 kΩ / 600 kΩ / 6 MΩ / 60 MΩ
Resolution	0.1 Ω / 0.001 kΩ / 0.01 kΩ / 0.1 kΩ / 0.001 MΩ / 0.01 MΩ
Accuracy	600 Ω range: ± (1% + 5 digits)
	6 kΩ through 60 MΩ ranges: ± (1.5% + 5 digits)
Overload protection	± 350 V DC, 350 V AC

60 MΩ measurements must be made in automatic shift mode.

Capacitance

Ranges	6 nF / 60 nF / 600 nF / 6 µF / 60 µF / 600 µF
Resolution	0.001 nF / 0.01 nF / 0.1 nF / 0.001 µF / 0.01 µF / 0.1 µF
Accuracy	± (3% + 10 digits)
Overload protection	± 30 V DC, 30 V AC
Smart function threshold	Must be greater than 0.4 nF.

Discharge capacitors before testing them.

Diode and Continuity

Diode	Short / non-conductance and good / defective test.
Continuity beeper	The beeper sounds when the measured resistance is less than 20 Ω.

Dimensions

Meter	290 x 138.3 x 26.5 mm (11.4 x 5.4 x 1.0")
Flexible cable	300 mm long, 8 mm diameter

Weight

Meter	197 g (0.435 lb), without batteries

Accessories Included

• Operation manual, 1 pc.
• Test leads, CAT III 1000 V, 1 pair.

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