Hioki introduces new current probes again
The pace of new product launches by the Japanese company Hioki has been - in the words of a classic - killer lately; one of the recently introduced novelties is the ergonomically completely redesigned CT6833 (200 A AC/DC) and CT6834 (500 A AC/DC) current clamps. Not only the perfectly hand-fitting shape, but above all the high basic accuracy of ±0.07% rdg. with minimal influence on the measured value due to the position of the conductor inside the clamp makes these probes the perfect tool for measurements according to WLTP and SAE J1634 standards.
Hand-in-hand with the claimed accuracy required when measuring to the above standards, this accuracy must be ensured over the widest possible temperature range of measurement - just as the cars being tested must be serviceable from the equator to beyond the Arctic Circle. Hioki probes are therefore guaranteed to be accurate over the -40 °C to 85 °C range, and Hioki goes much further than the accuracy required by the WLTP standards:
The main problem with long-term current measurements is the temperature drift of the signal. While Hioki's older probes with fluxgate-based measurements also exhibit exceptionally low drift, these new clamps go one step further - the drift is reduced to almost unmeasurable values. Even in extreme conditions such as under the hood, where temperatures can rise dramatically during testing, the probes maintain a stable accuracy of 0.01%. For easier handling and higher reliability of measurements in tight spaces, such as the engine compartment of a car, the calipers are also equipped with an innovative locking mechanism that prevents accidental opening during the measurement and thus invalidation.
Both the CT6833 and CT6834 models are directly compatible with Hioki data loggers via the U8977 plug-in input unit with built-in ME15W connector and also with wattmeters. However, when combined with the CT955x series converters, which allow these current probes to be connected and then the output signal sent via a standard BNC cable to any oscilloscope or datalogger from another manufacturer, these (and not only these) new Hioki probes can be used by virtually anyone with a measuring instrument having a voltage input of adequate sensitivity.
