Clamp Meters

A clamp meter is an electrical test tool that combines a basic digital multimeter with a current sensor. Clamps measure current such as AC current, AC and DC voltage, resistance, continuity, and, with some models, DC current, capacitance, temperature, frequency and more. Due to the hinged jaw, this tool allows the user to clamp the jaws around a wire, cable or other conductor at any point in an electrical system, then measure the current without disconnecting it. True RMS measurements, this tester typically measures to the nearest 10th of a unit making them perfect for electrical work such as repairing, installation and maintenance.


Originally created as a single-purpose test tool, modern clampmeters offer more measurement functions, greater accuracy and sometimes specialised measurement features. Today’s clamp meters include most of the basic functions of a digital multimeter, such as the ability to measure voltage, continuity and resistance.


Who uses them?


    Industrial maintenance technicians

    Control technicians

    Electricians – in-house and contractors

    Facilities, building maintenance and HVAC technicians

    Service organisations

What are they used on?


    Industrial equipment

    Industrial controls

    Electrical systems

    Commercial/industrial HVAC

Why are Clamp meters so popular?


    Safety: Clamp meters allow electricians to bypass the old-school method of cutting into a wire and inserting a meter’s test leads into the circuit to take an inline current measurement. The jaws of a clamp meter do not need to touch a conductor during a measurement.

    Convenience: During measurement, it is not necessary to shut off the circuit carrying current—a large boost in efficiency.

They are primarily used for:


    Service: Repair existing systems on an as-needed basis.

    Installation: Troubleshooting installation problems, perform final circuit tests, and supervise apprentice electricians while installing electrical equipment.

    Maintenance: Perform scheduled and preventative maintenance and system troubleshooting.

...
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Description Price Absolute Maximum AC Current Measurement Absolute Maximum DC Current Measurement Absolute Maximum AC Voltage Measurement Absolute Maximum DC Voltage Measurement Absolute Maximum Resistance Measurement Connectivity Model Number AC Current Measurement Resolution DC Current Measurement Resolution Best DC Current Accuracy Clamp Meter Type Best AC Current Accuracy Best AC Voltage Accuracy Best DC Voltage Accuracy
RS Stock No. 765-3658
Mfr. Part No.FLUKE 323
BrandFluke
HK$1,367.56
Each
units
400A ac - 600V ac 600V dc 400Ω - 323 100mA - - Multifunction Clamp ±2% +5 digits ±1% + 5 Digits ±(1% rdg + 5dgts)
RS Stock No. 765-3667
Mfr. Part No.FLUKE 324
BrandFluke
HK$1,620.70
Each
units
400A ac - 600V ac 600V dc 400Ω - 324 10mA - - Multifunction Clamp ±(1.5% rdg + 5dgts) ±(1.5% rdg + 5dgts) ±(1% rdg + 5dgts)
RS Stock No. 765-3660
Mfr. Part No.FLUKE 325
BrandFluke
HK$3,107.58
Each
units
400A ac 400A dc 600V ac 600V dc 40kΩ - 325 10mA 10mA ±(2% rdg + 5dgts) Multifunction Clamp ±(2% rdg + 5dgts) ±(1.5% rdg + 5dgts) ±(1% rdg + 5dgts)
RS Stock No. 914-5424
Mfr. Part No.Fluke 376
BrandFluke
HK$5,528.81
Each
units
999.9A ac 999.9A dc 1000V ac 1000V dc 60kΩ - 376 0.1A 0.1A 2 % AC/DC Clamp Meter 2.5 % 1.5 % 1 %
RS Stock No. 914-5436
Mfr. Part No.3790599
BrandFluke
HK$3,988.56
Each
units
600A ac 600A dc 600V ac 600V dc 6kΩ - 374 0.1A 0.1A 2 % AC/DC Clamp Meter 2 % 1.5 % 1 %
RS Stock No. 760-9112
Mfr. Part No.Fluke 302+
BrandFluke
HK$608.00
Each
units
400A ac - 600V ac 600V dc 4kΩ - 302+ - - - Current, Resistance, Voltage ±1.8 % ±1.5 % ±1.5 %
RS Stock No. 287-642
Mfr. Part No.FLUKE 771
BrandFluke
HK$6,676.56
Each
units
-, - A ac 99.9mA dc - - - - 771 - 10uA ±1% + 5 Digits Milliamp Process Clamp - - -
RS Stock No. 669-3493
Mfr. Part No.Fluke 773
BrandFluke
HK$12,774.97
Each
units
-, - A ac 99.9mA dc - 30V dc - - 773 - 10uA ±1% + 5 Digits Milliamp Process Clamp - - 0.2% + 2 Digits
RS Stock No. 247-0142
Mfr. Part No.6111-284
BrandMegger
HK$5,505.28
Each
units
300A ac - - - - - DCM300E 10µA - - Leakage Current Clamp ±5% +5 digits - -
RS Stock No. 669-3490
Mfr. Part No.Fluke 772
BrandFluke
HK$8,724.17
Each
units
-, - A ac 99.9mA dc - - - - 772 - 10uA ±1% + 5 Digits Milliamp Process Clamp - - -
RS Stock No. 705-1948
Mfr. Part No.Fluke 373
BrandFluke
HK$2,655.21
Each
units
600A ac - 600V ac 600V dc 6kΩ - 373 100mA - - Multifunction Clamp ±2% +5 digits ±1% + 5 Digits ±1% + 5 Digits
RS Stock No. 520-2532
Mfr. Part No.Fluke i400
BrandFluke
HK$1,655.18
Each
units
400A ac - - - - - I400 - - - Current ±2% +0.15 A - -
RS Stock No. 420-0743
Mfr. Part No.2003A
BrandKyoritsu
HK$2,517.00
Each
units
2kA ac 2kA dc 750V ac 1000V dc 4kΩ - - 100mA ac 100mA dc ±1.5% + 2 Digits Continuity, Current, Resistance, Voltage ±3% +2 digits ±1.5% + 4 Digits ±1% + 2 Digits
RS Stock No. 705-1923
Mfr. Part No.FLUKE 381
BrandFluke
HK$6,597.73
Each
units
1kA ac 1kA dc 1000V ac 1000V dc 60kΩ - 381 100mA 100mA ±2% + 5 Digits Multifunction Clamp ±2% +5 digits ±1.5% + 5 Digits ±1% + 5 Digits
RS Stock No. 760-9121
Mfr. Part No.Fluke 303
BrandFluke
HK$742.00
Each
units
600A ac - 600V ac 600V dc 4kΩ - 303 - - - Current, Resistance, Voltage ±1.8 % ±1.5 % ±1.5 %
RS Stock No. 346-7406
Mfr. Part No.MX0355Z
BrandMetrix
HK$2,385.24
Each
units
400A ac 400A dc 600V ac 600V dc 399.9Ω - MX0355-Z 10mA 10mA ±(2.5% rdg + 10dgts) Multifunction Clamp ±(2% rdg + 10dgts) ±(1.5% rdg + 5dgts) ±(1% rdg + 2dgts)
RS Stock No. 794-3077
Mfr. Part No.ACD-10 PLUS
BrandAmprobe
HK$835.12
Each
units
600A ac - 600V ac 600V dc 40MΩ - ACD-10 PLUS - - - Multifunction Clamp ±(1.5% rdg + 8dgts) ±(1.5% rdg + 5dgts) ±(0.3% rdg + 4dgts)
RS Stock No. 794-3086
Mfr. Part No.LH41A
BrandAmprobe
HK$4,379.33
Each
units
40A ac 40A dc - - - - LH41A 1mA 1mA ±(1.3% rdg + 5dgts) Current Clamp ±(1.3% rdg + 5dgts) - -
RS Stock No. 252-214
Mfr. Part No.Fluke 345
BrandFluke
HK$26,263.92
Each
units
1.4kA ac 2kA dc 825V ac 825V dc - USB 345 10mA 10mA ±1.5% + 5 Digits Power Quality Clamp ±1.5% +5 digits ±1.5% + 5 Digits ±1.5% + 5 Digits
RS Stock No. 848-1340
Mfr. Part No.CM78
BrandFLIR
HK$3,804.43
Each
units
1kA ac 1kA dc 1000V ac 1000V dc 40MΩ Bluetooth CM78 - - ±2.5 % Multifunction Clamp ±2.5 % ±1.5 % ±1.5 %
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