AC/DC CLAMP METER CM4374 (Bluetooth®)
True RMS 2000 A AC/DC Clamp Meter with Bluetooth Wireless Technology for Advanced Applications and the Toughest Situations
Discontinued
Hioki clamp on meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology. The CM4374 is a 2000A True RMS clamp meter that features stronger jaws, broader -25°C to 65°C operating temperature range and IP54 dustproof and waterproof enclosure to enable professionals to work quickly in tough situations including the development, repair, and maintenance of equipment and devices such as electric vehicles. Additionally, the high-voltage DC measurement capability of up to 1700 V (*1) is ideal for the clamp maintenance inspections of electrical and solar power equipment. Measured values can be sent to a smartphone or tablet using Bluetooth® wireless technology and displayed as waveforms in real time.
CAT IV 600 V, CAT III 1000 V
CM4370 Series Clamp Meters Product Video
Key Features
- Send measured values to a smartphone or tablet using Bluetooth® wireless technology
- Multiple measurement functions
- IP54 dustproof and waterproof enclosure
Jaws (current sensor portion): IP50
- Measure DC voltages of up to 1700 V (*1) for open voltage inspections of solar panels
- Simultaneously measure inrush current in RMS and crest values
- Expanded -25°C to 65°C operating temperature range
- Automatic AC/DC function helps boost work efficiency
- *1:Your instrument can be used to measure voltages in excess of 1000V DC if and only if both of the following conditions are satisfied:
- 1. The circuit under measurement is isolated from the commercial power grid.
- 2. The circuit under measurement is isolated from ground.
- e.g.: When measuring the no-load voltage of an ungrounded PV panel
- Do not use the instrument with circuits whose terminal-to-ground voltage exceeds 1000V. Doing so may result in electric shock.
Data can be downloaded to tablets and smartphones using Hioki’s dedicated free app "GENNECT Cross," available from the Google Play or App Store.
Germany iF Design Award CM4371 series
Instantly create reports by a free app (GENNECT Cross)
GENNECT Cross, a free app designed specifically for use with Hioki measuring instruments, lets you check and manage measurement results and create reports.
The software provides a range of functionality that helps manage data in the field, including photographing measurement sites, placing measurement results on photographs, and saving hand written memos.
Using the Wireless Feature to Display Data on a Mobile Device: How to Use Hioki Clamp Meters
Measured values captured by the Hioki CM4372 and CM4374 AC/DC Clamp Meters can be displayed and saved onto a mobile device wirelessly. The results can also be used to create automatic reports. Simply install the free GENNECT Cross app onto your mobile device and connect to the Hioki clamp meters. Reports created on your mobile device can even be e-mailed to the office to further increase work efficiency.
Current Measurement Function: How to Use the Hioki CM4370 Series Clamp Meters
Learn how to effectively use the current measurement function with this short video.
Auto Hold Function: How to Use the Hioki CM4370 Series Clamp Meters
The Auto Hold feature is perfect in situations where the display is hard to read because the clamped wires are in hard to reach locations. With Auto Hold, measured results automatically freeze on the display until the next measurement starts, making testing and record taking a snap.
Max/Min/AVG/Peak Function: How to Use the Hioki CM4370 Series Clamp Meters
Watch this video to learn how to capture the maximum, minimum, average and peak values of a current signal, available when the AUTO AC/DC mode is not in use.
Simultaneous Display of DC Current and DC Voltage: How to Use the Hioki CM4370 Series Clamp Meters
The CM4370 Series can measure both DC current and DC voltage with a single device at the same time, making it ideal for automotive battery testing and inspection and maintenance of solar panels.
Inrush Measurement Function: How to Use the Hioki CM4370 Series Clamp Meters
Accurately measure the startup or inrush current of motors and equipment. The CM4370 series is engineered to detect the full startup current period and then identify the RMS waveform as well as the highest waveform peak.
Voltage Measurement Function: How to Use the Hioki CM4370 Series Clamp Meters
The DMM function of the AC/DC clamp meter is advanced enough to measure up to 1700V AC/DC. Watch this video to learn more.
Continuity Check Function: How to Use the Hioki CM4370 Series Clamp Meters
The DMM function of the AC/DC clamp meter also provides a continuity check function. Easily detect short-circuits with the clear buzzer and red LED.
AC Voltage Detection Function: How to Use the Hioki CM4370 Series Clamp Meters
The tip of the current sensor of the CM4370 Series can also detect live voltages, eliminating the need for you to use a separate voltage detector. Energized lines are identified with a loud buzzer and red LED on the clamp meter.
Basic specifications
| DC Current range | 600.0 A/2000 A, Basic accuracy: ±1.3% rdg. ±0.3 A (600A range) | |||||
|---|---|---|---|---|---|---|
| AC Current range | 600.0 A/2000 A (10 Hz to 1 kHz, True RMS), Basic accuracy: ±1.3% rdg. ±0.3 A (600A) | |||||
| Crest factor | 600.0 A range: 3 or less, 2000 A range: 2.84 or less | |||||
| DC+AC Current range | 600.0 A/2000 A (10 Hz to 1 kHz, True RMS), Basic accuracy DC, 45-66 Hz: ±1.3% rdg. ±1.3 A (at 600 A) | |||||
| DC Voltage range | 600.0 mV to 1700 V (*1), 5 ranges, Basic accuracy: ±0.5% rdg. ±0.5 mV (at 600 mV) | |||||
| AC Voltage range | 6.000 V to 1000 V, 4 ranges (15 Hz to 1 kHz, True RMS), Basic accuracy 45 - 66 Hz: ±0.9% rdg. ±0.013 V (at 6 V) | |||||
| DC+AC Voltage range | 6.000 V to 1000 V, 4 ranges, Basic accuracy DC, 45 - 66 Hz: ±1.0% rdg. ±0.023 V (at 6 V) | |||||
| Resistance range | 600.0 Ω to 600.0 kΩ, 4 ranges, Basic accuracy: ±0.7% rdg. ±0.5 Ω (at 600 Ω) | |||||
| Capacitance range | 1.000 μF to 1000 μF, 4 ranges, Basic accuracy: ±1.9% rdg. ±0.005 μF (at 1 μF) | |||||
| Frequency range | 9.999 Hz to 999.9 Hz, 3 ranges, Basic accuracy: ±0.1% rdg. ±0.003 Hz (at 9.999 Hz) | |||||
| Temperature (K) | -40.0 to 400.0 ˚C, add temperature probe accuracy to basic accuracy of ±0.5% rdg. ±3.0 ˚C | |||||
| Voltage detection | Hi: 40 V to 600 V AC, Lo: 80 V to 600 V AC, 50/60 Hz | |||||
| Other functions | Automatic AC/DC detection, Plus/Minus judgement function of DC A, DC V, Max/Min/Average/PEAK MAX/ PEAK MIN value display, Filter function, Display value hold, Auto hold, Back light, Auto-power save, Buzzer sounds, Zero-adjustment | |||||
| Dustproof, waterproof | Grip: IP54 (when measuring an insulated conductor only), Jaw (the current sensor portion of the instrument)/ barrier: IP50 *Risk of electric shock from the conductor being measured increases when wet. | |||||
| Interface | Bluetooth® 4.0LE, Supported devices: iOS, Android™ smartphone/tablet GENNECT Cross (free downloadable app) : display measured values and waveforms, Simple logging function, Waveform monitor function, Hold save function |
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| Power supply | LR03 Alkaline battery ×2, Continuous use: 45 hr (Backlight OFF, Bluetooth® OFF), 24 hr (Backlight OFF, Bluetooth® ON) | |||||
| Core jaw diameter | φ55 mm (2.17 in), Jaw dimension: 92 mm (3.62 in) W×18 mm (0.71 in) D | |||||
| Dimensions and mass | 65 mm (2.56 in) W×250 mm (9.84 in) H×35 mm (1.38 in) D mm, 530 g (18.7 oz) | |||||
| Included accessories | TEST LEAD L9207-10, CARRYING CASE C0203, LR03 Alkaline battery ×2, Instruction Manual ×1, Precautions Concerning Use of Equipment that Emits Radio Waves ×1 | |||||
- *1:Your instrument can be used to measure voltages in excess of 1000V DC if and only if both of the following conditions are satisfied:
- 1. The circuit under measurement is isolated from the commercial power grid.
- 2. The circuit under measurement is isolated from ground.
- e.g.: When measuring the no-load voltage of an ungrounded PV panel
- Do not use the instrument with circuits whose terminal-to-ground voltage exceeds 1000V. Doing so may result in electric shock.
Countries and regions where wireless operation is currently supported (CM4374)
| Countries and regions where wireless operation is currently supported | Australia, Austria, Bangladesh, Belgium, Bulgaria, Canada, Chile, Colombia, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Georgia, Germany, Greece, Hong Kong, Hungary, Iceland, Ireland, Italy, Japan, Kenya, Latvia, Liechtenstein, Lithuania, Luxembourg, Macao, Malta, Myanmar, Netherlands, New Zealand, Norway, Peru, Philippines, Poland, Portugal, Romania, Saudi Arabia, Singapore, Slovakia, Slovenia, Spain, Sweden, Switzerland, Thailand, Turkey, United Kingdom, United States, Viet Nam | |||||
|---|---|---|---|---|---|---|
| Note | Use of devices that emit radio radiation requires approval in the country of use. Thus, use of the instrument in a country or region where they have not been approved may be subject to penalty as a violation of law. | |||||
Test leads (2)
L9207-10 is a bundled accessory
Cable length: 90 cm (2.95 ft.)
Cable length 95 cm (37.4 in.), Integrated cap and protective finger guard
Options for Test leads (for the L9207-10, L9300) (2)
Attach L9207-10 with the cap removed.
Slide the guard of L9300 and attach as measurement category II.
Attaches to the tip of the Test Lead L9207-10/DT4911, L9206, 60V DC/ 30V AC
Attaches to the tip of the L4932, L9207-10/DT4911, L9206, CAT III 300 V, CAT II 600 V
Options for Test leads (for the L4930) (10)
Test Pin Set L4932 is required when using the Small Alligator Clip Set L4934
1.2 m (3.94 ft) length, CAT IV 600 V, CAT III 1000 V
Expands the length of L4930/4940, 1.5 m (4.92 ft) length
Attaches to the tip of the L4930/4940, CAT IV 600 V, CAT III 1000 V
Attaches to the tip of the L4932, L9207-10/DT4911, L9206, CAT III 300 V, CAT II 600 V
Attaches to the tip of the L4930/4940, CAT IV 600 V, CAT III 1000 V
Attaches to the tip of the L4930/4940, CAT III 600 V
Attaches to the tip of the L4930/4940, CAT III 1000 V
Attaches to the tip of the L4930/4940, CAT III 600 V
Attaches to the tip of the L4930/4940, CAT III 600 V
Attaches to the tip of the banana plug cable, Red/Black: 1 each, 185 mm (7.28 in.) length, CAT II 1000 V
Temperature measurement (1)
K type, tip exposed, 0.5 mm (0.02 inch) diameter, 80 cm (2.62 ft) length, -40°C to 260°C (-40°F to 500°F), tolerance ±2.5 °C
Other options (1)
Bundled accessory
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AC/DC CLAMP METER CM4373, CM4373-20, CM4373-21, CM4373-30, CM4373-40, CM4374, CM4374-20, CM4374-21, CM4374-30, CM4374-40
Test Report
Japanese
English Ver.00 -
AC CLAMP METER CM4141,CM4142 AC/DC CLAMP METER CM4371,CM4372,CM4373,CM4374,CM4375,CM4376 DIGITAL MULTIMETER DT4254
Operating Precautions
Japanese
English Ver.00 -
AC/DC CLAMP METER CM4372,CM4374
Precautions Concerning Use of Equipment that Emits Radio Waves
Japanese
English Ver.09 -
AC/DC CLAMP METER CM4371,CM4372,CM4373,CM4374
Instruction Manual
English
Spanish
German
French Ver.00 -
AC/DC CLAMP METER CM4371,CM4372,CM4373,CM4374
Instruction Manual
Simplified Chinese
Ver.00
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AC/DC CLAMP METER CM4371,CM4372,CM4373,CM4374
Instruction Manual
English
Ver.00
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AC/DC CLAMP METER CM4371,CM4372,CM4373,CM4374
Instruction Manual
Korean
Ver.00