Hioki CT7731 AC/DC Auto-Zero Current Sensor
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- AC/DC Auto-Zero Current Sensor
- DC to 5kHz (-3dB)
- 100A AC/DC
- +/-1.8 deg. phase accuracy
- 33 mm core diameter
- 2.5m cord lenght
- PL14 terminal
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Description
Hioki CT7731 AC/DC Auto-Zero Current Sensor
Hioki clamp on meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology. The CT7731 is a 100 A AC/DC Current Sensor that pairs with the detachable Display Unit CM7290 or CM7291 for convenient field testing, while delivering an extended temperature range and auto-zero adjustment to minimize drift due to wide temperature changes that occur during long-term testing.
Further extend the functionality of this system by connecting the Display Unit with a Hioki memory recorder or logger.
CAT IV 600 V
Key Features
- Accurately measure and record even when the temperature changes
- Ideal for site inspections by using detachable Display Unit
- Four output formats to output data to loggers or other devices (via Display Unit): WAVE, RMS, PEAK, Hz
Basic specifications
Accuracy guaranteed: 3 years
| Rated measurement current | 100 A AC/DC | |||||
|---|---|---|---|---|---|---|
| Max. measurement current | 100 A (requires derating at frequency) | |||||
| Max. allowable peak input | 150 A peak | |||||
| Bandwidth | DC to 5 kHz (-3dB) (When used in combination with CM7290 or CM7291: DC 3 Hz to 1 kHz) | |||||
| Typical phase accuracy | ±1.8 deg. (DC < f ≤ 66 Hz) | |||||
| Output rate | 1 mV/A | |||||
| Max. rated voltage to earth | AC/DC 600 V (CAT IV) | |||||
| Core diameter | φ 33 mm (1.30 in) or less | |||||
| Output connectors | HIOKI PL 14 | |||||
| Operating temperature range | -25 °C to 65 °C (-13 °F to 149 °F) | |||||
| Dimensions and mass | 58 mm (2.28 in)W × 132 mm (5.20 in)H × 18mm (0.71 in)D, 250 g (8.8 oz), Cable length 2.5 m (8.20 ft) | |||||
| Included accessories | None | |||||
Connect to Recorders, Data loggers, and Oscilloscopes
Must be paired with the Display Unit CM7290 or CM7291 to operate as a standalone unit. Add an output cord to deliver signals to a data logger or Memory HiCorder for the following types of output:
- A DC or AC (up to 5 kHz/10 kHz) current waveform as-is (using WAVE mode for waveform output)
- An analog signal generated by converting the input waveform to a series of RMS values (using RMS mode for RMS output)
- An analog signal generated by detecting the current waveform’s peak value (using PEAK mode for peak output
- An analog waveform generated by detecting the frequency of the current waveform (using FREQ mode for frequency output)
Broad temperature range
A wide operating temperature range of -25°C to 65°C (-13°F to 149°F)lets you use the sensor even in sub-freezing temperatures and on hot summer days. 
Take measurements without shifts in the zero-point, even during extended recording with temperature variations
Because temperature variations cause the zero-point to shift when using a conventional DC current sensor to measure DC current, it is necessary to perform zero-adjustment periodically when recording data over an extended period of time with such a sensor. This shortcoming is caused by the effects of the Hall element that conventional DC current sensors use to to detect current. Hioki’s new auto-zero current sensors incorporate a new switching-based offset cancellation circuit developed to address this problem. The new design minimizes zero-point shift, making it possible to record DC current values over an extended period of time without the need for periodic zero-adjustment. 
Transfer data wirelessly using Bluetooth(R) to GENNECT Cross mobile app
Pair with the CM7291 Display Unit to send measurement data to a smartphone or tablet using Bluetooth® wireless technology. Use the GENNECT Cross dedicated app to display and review measured values and waveforms in real time. 
For more information: Hioki
Documents
Hioki CT7731 Current Sensor
Hioki CT7731 DatasheetOptions
Video
Hioki CT7731 AC/DC Auto-Zero Current Sensor
Hioki clamp on meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology. The CT7731 is a 100 A AC/DC Current Sensor that pairs with the detachable Display Unit CM7290 or CM7291 for convenient field testing, while delivering an extended temperature range and auto-zero adjustment to minimize drift due to wide temperature changes that occur during long-term testing.
Further extend the functionality of this system by connecting the Display Unit with a Hioki memory recorder or logger.
CAT IV 600 V
Key Features
- Accurately measure and record even when the temperature changes
- Ideal for site inspections by using detachable Display Unit
- Four output formats to output data to loggers or other devices (via Display Unit): WAVE, RMS, PEAK, Hz
Basic specifications
Accuracy guaranteed: 3 years
| Rated measurement current | 100 A AC/DC | |||||
|---|---|---|---|---|---|---|
| Max. measurement current | 100 A (requires derating at frequency) | |||||
| Max. allowable peak input | 150 A peak | |||||
| Bandwidth | DC to 5 kHz (-3dB) (When used in combination with CM7290 or CM7291: DC 3 Hz to 1 kHz) | |||||
| Typical phase accuracy | ±1.8 deg. (DC < f ≤ 66 Hz) | |||||
| Output rate | 1 mV/A | |||||
| Max. rated voltage to earth | AC/DC 600 V (CAT IV) | |||||
| Core diameter | φ 33 mm (1.30 in) or less | |||||
| Output connectors | HIOKI PL 14 | |||||
| Operating temperature range | -25 °C to 65 °C (-13 °F to 149 °F) | |||||
| Dimensions and mass | 58 mm (2.28 in)W × 132 mm (5.20 in)H × 18mm (0.71 in)D, 250 g (8.8 oz), Cable length 2.5 m (8.20 ft) | |||||
| Included accessories | None | |||||
Connect to Recorders, Data loggers, and Oscilloscopes
Must be paired with the Display Unit CM7290 or CM7291 to operate as a standalone unit. Add an output cord to deliver signals to a data logger or Memory HiCorder for the following types of output:
- A DC or AC (up to 5 kHz/10 kHz) current waveform as-is (using WAVE mode for waveform output)
- An analog signal generated by converting the input waveform to a series of RMS values (using RMS mode for RMS output)
- An analog signal generated by detecting the current waveform’s peak value (using PEAK mode for peak output
- An analog waveform generated by detecting the frequency of the current waveform (using FREQ mode for frequency output)
Broad temperature range
A wide operating temperature range of -25°C to 65°C (-13°F to 149°F)lets you use the sensor even in sub-freezing temperatures and on hot summer days.
Take measurements without shifts in the zero-point, even during extended recording with temperature variations
Because temperature variations cause the zero-point to shift when using a conventional DC current sensor to measure DC current, it is necessary to perform zero-adjustment periodically when recording data over an extended period of time with such a sensor. This shortcoming is caused by the effects of the Hall element that conventional DC current sensors use to to detect current. Hioki’s new auto-zero current sensors incorporate a new switching-based offset cancellation circuit developed to address this problem. The new design minimizes zero-point shift, making it possible to record DC current values over an extended period of time without the need for periodic zero-adjustment.
Transfer data wirelessly using Bluetooth(R) to GENNECT Cross mobile app
Pair with the CM7291 Display Unit to send measurement data to a smartphone or tablet using Bluetooth® wireless technology. Use the GENNECT Cross dedicated app to display and review measured values and waveforms in real time.
For more information: Hioki