Hioki clamp on meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology. The CM7290 is the display and output unit for the CT7600 and CT7700 AC/DC Current Sensor series, creating a standalone clamp meter for field use or enabling waveform signals to be output to a Hioki memory recorder or logger for further analysis.
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Power supply and signal output for Current Sensor CT7000 series
Simultaneous dual display of the measured values, frequency, and output rate
Four output formats to output data to loggers or other devices (via Display Unit)
Supports AC adapter, AA alkaline batteries, and external power supply
Basic Specifications
Sensor
CT7642, 7742
CT7636, 7736
CT7631, 7731
Measurement parameters
DC, AC, DC+AC, Hz
Crest factor
3 at 5000 count or 2.5 at 6000 count for AC and DC+AC
Output method
WAVE, RMS, PEAK, FREQ
Input connectors
HIOKI PL 14
Output update time
PEAK--- FAST: 0.02 s / NORMAL: 0.2 s / SLOW: 1 s
FREQ--- FAST: FAST: 0.2 s / NORMAL: 0.2 s / SLOW: 3.0 s
(WAVE, RMS: analog output)
PEAK sensing duration
2 ms or greater
(during PEAK MAX/PEAK MIN and PEAK output)
Other functions
Auto range, Zero adjustment at power-up, Analysis display, Filter, Output amplification, Display value hold, Backlight , Auto-power save, Save settings, keypad lock
Typical accuracy
(WAVE output DC)
±2.0% rdg. ±10.8 mV
(60.00 A range)
±2.5% rdg. ±30.8 mV
(60.00 A range)
±1.5% rdg. ±5.8 mV
(60.00 A range)
Typical accuracy
(RMS output AC)
±2.3% rdg. ±10.8 mV
(60.00 A range)
±2.8% rdg. ±30.8 mV
(60.00 A range)
±1.8% rdg. ±5.8 mV
(60.00 A range)
Power supply
LR6 alkaline batteries (AA) ×2, Continuous use: 16 h (backlight OFF and WAVE or RMS output, when used with CT7600s), Rated power 2.5 VA
or AC adapter 9445-02/03 (100 to 240V AC), or 5 to 15 V DC external power supply, Rated power 2.5 VA
Dust and water resistance *
IP54 (with sensor connected and caps fitted to AC adapter and power connector)
Dimensions and mass
52 mm (2.05 in)W × 163 mm (6.42 in)H × 37 mm (1.46 in)D, 220 g (7.8 oz) (including protector and battery)
CM7290, CM7291 cannot be used alone. Use with CT7000 series.When used in combination with the CT7000 sensor series, the frequency band for current display and waveform output is narrower than the sensor band.
