Yokogawa CL Series Clamp-On Testers

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Benefits of the Yokogawa CL Series Handheld Devices in Clampmeter Design

  • Combination of current clamp and measurement instrument with display.
  • Measurement of AC current, AC/DC current, and leakage current.
  • Wide clamp opening for conductors up to 54 mm in diameter.

Yokogawa CL Series Clamp-On Testers

Yokogawa CL series are handy, light weight and compact clamp-on testers. Models are available for AC current measurement, AC/DC current measurement and leakage current measurements, with various current ranges and diameters. Depending on the model they have a mean value or true RMS display. All models have a data old function.

Yokogawa CL Models for AC Current

Model CL120 CL130 CL135 CL150 CL155
Diameter of measurable conductor 24 mm 30 mm 30 mm 54 mm 54 mm
Display 1999 1999 1999 3999 3999
DC current Range - - - - -
Resolution - - - - -
AC current Range 20/200 A 200/600 A 200/600 A 400/2000 A 400/2000 A
Resolution 0.01 A 0.1 A 0.1 A 0.1 A 0.1 A
Frequency characteristics 40 Hz...1 kHz 40 Hz...1 kHz 40 Hz...1 kHz 40 Hz...1 kHz 40 Hz...1 kHz
Method of detection Mean value Mean value True RMS Mean value True RMS
Other measurement AC voltage -
DC voltage - - -
Continuity check -
Frequency - - - - -
Temperature - - - - -
Other functions Recorder output - - -
Waveform monitor output - - - - -
Data hold
Auto hold - - - - -
Peak hold - - -
Maximum value memory - - - - -
Mean value display - - - - -
Filter - - - - -
Range hold (current range) ✓ (current range) ✓ (current range)
Auto ZERO adjust - - - - -
Auto power-off - - ✓ (sleep function/power-down) ✓ (sleep function/power-down)
Safety standards EN61010-1,
EN61010-2-032 (CAT  III 300 V)
EN61010-1,
EN61010-2-031, EN61010-2-032 (CAT III 600 V)
EN61010-1,
EN61010-2-031, EN61010-2-032 (CAT III 600 V)
EN61010-1,
EN61010-2-031, EN61010-2-032 (CAT M 600 V, CAT II 1000 V)
EN61010-1, EN61010-2-031, EN61010-2-032 (CAT HI 600 V, CAT II 1000 V)

Yokogawa CL Models for AC/DC Currents

Model CL220 CL235 Cl250 CL255
Diameter of measurable conductor 24 mm 33 mm 55 mm 55 mm
Display 3999 3999 3999 3999
DC current Range 40/300 A 400/1000 A 400/2000 A 400/2000 A
Resolution 0.01 A 0.1 A 0.1 A 0.1 A
AC current Range 40/300 A 400/600 A 400/2000 A 400/2000 A
Resolution 0.01 A 0.1 A 0.1 A 0.1 A
Frequency characteristics 20 Hz...1 kHz 40 Hz...1 kHz 40 Hz...1 kHz 30 Hz...1 kHz
Method of detection Mean value True RMS Mean value True RMS
Other measurement AC voltage -
DC voltage -
Continuity check -
Frequency - -
Temperature - - - -
Other functions Recorder output - -
Waveform monitor output - - - -
Data hold
Auto hold - - - -
Peak hold - -
Maximum value memory - - -
Mean value display - -
Filter - - - -
Range hold (current range) - - ✓ (current range) -
Auto ZERO adjust
Auto power-off ✓ (sleep function/power-down) ✓ (sleep function/power-down) ✓ (sleep function/power-down) ✓ (sleep function/power-down)
Safety standards EN61010-1, EN61010-2-032 (CAT III 300 V) EN61010-1,EN61010-2-031, EN61010-2-032 (CAT III 600 V) EN61010-1, EN61010-2-031, EN61010-2-032 (CAT III 600 V, CAT II 1000 V) EN61010-1,EN61010-2-031, EN61010-2-032 (CAT III 600 V, CAT II 1000 V)

Yokogawa CL Models for Leakage Current

Model CL320 CL340 CL345 CL360  
Diameter of measurable conductor 24 mm 40 mm 40 mm 68 mm
Display 1999 3999 4200 1999
DC current Range - - - -
Resolution - - - -
AC current Range 20/200 mA, 200 A 40/400 mA, 400 A 40/400 mA, 400 A 200 mA/2/20/200/1000 A
Resolution 0.01 mA 0.01 mA 0.01 mA 0.1 mA
Frequency characteristics 40...400 Hz 20 Hz...1 kHz 20 Hz...1 kHz 40 Hz...1 kHz
Method of detection Mean value Mean value True RMS Mean value
Other measurement AC voltage - - - -
DC voltage - - - -
Continuity check - - - -
Frequency - - - -
Temperature - - - -
Other functions Recorder output - - -
Waveform monitor output - - -
Data hold
Auto hold - - - -
Peak hold -
Maximum value memory - - - -
Mean value display - - - -
Filter
Range hold (current range)
Auto ZERO adjust - - - -
Auto power-off -
Safety standards EN61010-1, EN61010-2-032 (CAT III 300 V) EN61010-1, EN61010-2-032 (CAT III 300 V) EN61010-2-032 (CAT III 300 V) EN 61010-1, EN 61010-2-032 (CAT III 300 V)

Yokogawa CL Process Meter

Model CL420
Diameter of measurable conductor max. 6 mm
DC current Range and resolution [measuring range]: 20.00 mA [0.00 to ±21.49 mA], 100.0 mA [±21.0 to ±126.0 mA]
Measuring accuracy: ±(0.2% rdg + 5 dgt), ±(1.0% rdg + 5 dgt)
DC voltage OUTPUT 20.00 mA [0.0 to ±214.9 mV], 100.0 mA [±210 to ±1260 mV]
(DCA accuracy) + (±0.5 mV), (DCA accuracy) + (±3 mV)
Display 4-digit LCD numeric display
Response time Approx. 1.5 s (2.5 s when across the range)
Range switching Auto range
Operating temperature and humidity -10...+50°C, 80% r. H. or less (no condensation)
Withstanding voltage 2.21 kVAC for 5 s (between the core and the case)
Power supply Four AA-size alkaline batteries (1.5V LR6); battery life approx. 60 h (continuous) backlight off and LED light off
Other functions Data hold, zero adjust function, auto power-off, LED torch light, back light display, illuminant panel
Safety standards EN61010-1, EN61010-2-030, EN61010-2-032
Dimensions (WxHxD, mm) 61 x 111 x 40, approx. 290 g (including batteries)

Note The quality test certificate QIC has to be ordered together with the hardware with the initial purchase. Later orders of the QICs are not possible!