Honeytek HK688D TRMS Clamp Meter
The Honeytek HK688D builds upon the excellent foundation of the HK688A by adding a critical function for comprehensive electrical diagnostics: DC Current measurement. This feature makes the HK688D an essential tool for automotive technicians, renewable energy specialists, and anyone working with DC circuits and batteries. It retains all the advanced features of the HK688A—including True RMS, LPF filtering, NCV, and the high CAT safety rating—while providing the ability to accurately measure DC current up to 600A. This versatility makes it the ideal single tool for diagnosing both AC and DC systems in automotive shops, solar installations, and industrial control panels.
Key Highlights:
DC Current Measurement: Measures DC current up to 600A, essential for automotive and solar applications.
True RMS & LPF: Ensures accurate readings on both distorted AC waveforms and noisy DC signals.
High Safety Rating: Certified CAT III 1000V / CAT IV 600V for safe use in a variety of environments.
Complete Diagnostic Suite: Includes Inrush Current test to capture starting current of motors and transformers.
Robust Design: Double-molded body for maximum durability on the job site.
Applications:
All applications of the HK688A, plus:
Automotive electrical system diagnosis (starter current, alternator output)
Solar panel and charge controller troubleshooting
Industrial DC motor and control circuit analysis
Battery performance and charging system testing
Full Product Specifications Table: Honeytek HK688D
| Function | Range | Accuracy |
|---|---|---|
| DC Voltage (V) | 600mV, 6V, 60V, 600V, 1000V | ±(0.5%+3d) for 600mV ±(0.5%+2d) for 6/60/600V ±(0.8%+5d) for 1000V |
| AC Voltage (V) | 6V, 60V, 600V, 1000V | ±(0.9%+5d) for 6V/60V ±(0.8%+5d) for 600V ±(0.9%+5d) for 1000V |
| AC Current (A) | 60A, 600A | ±(2.5%+5d) |
| DC Current (A) | 60A, 600A | ±(2.5%+5d) |
| Resistance (Ω) | 600Ω, 6kΩ, 60kΩ, 600kΩ, 6MΩ, 60MΩ | ±(1.0%+2d) for 600Ω ±(0.8%+2d) for 6k-6MΩ ±(2.5%+5d) for 60MΩ |
| Capacitance (F) | 6nF, 60nF, 600nF, 6µF, 60µF, 600µF, 6mF, 10mF | ±(3.0%+5d) for 6nF-600µF ±(10%+5d) for 6mF-10mF |
| Frequency (Hz) | 10Hz, 100Hz, 1kHz, 10kHz, 100kHz, 1MHz, 10MHz | ±(0.1%+4d) |
| Temperature (°C/°F) | -40°C to 1000°C / -40°F to 1832°F | ±(2.0%-5.0% + 3-5d) |
| Duty Cycle | 0.1% to 99.9% |
| General Feature | Specification |
|---|---|
| Display | 5999 Counts, LCD with Backlight & Analog Bar Graph |
| Safety Rating | CAT III 1000V / CAT IV 600V |
| Special Functions | True RMS, Diode Test, Continuity Buzzer, NCV, Live Wire, Flashlight, LPF Filter, Inrush Current, Data Hold, Peak Hold, MAX/MIN, Relative Mode, Auto Power Off |
| Jaw Size | Φ30.4×44.5mm |
| Power Supply | 3 x 1.5V AAA Batteries |
| Product Dimensions | 225 x 75 x 35 mm |
| Product Weight | 250g |
Product Comparison: HK688A vs. HK688D
The Honeytek HK688 series represents a robust and feature-rich line of professional diagnostic tools. The primary difference between the models is the type of current they can measure.
Honeytek HK688A: This model is a sophisticated AC-only clamp meter. Its strengths are its high accuracy (6000 counts), advanced features like LPF and NCV, and a very high CAT III 1000V / CAT IV 600V safety rating. It is the perfect choice for electricians and technicians whose work is exclusively focused on AC power systems, including commercial buildings, industrial plants, and facilities with VFDs.
Honeytek HK688D: This model is the versatile all-rounder. It includes every feature of the HK688A but adds the crucial ability to measure DC current up to 600A. This single addition transforms it into the essential tool for:
Automotive technicians diagnosing starting and charging systems.
Solar energy technicians installing and maintaining PV systems.
Industrial mechanics working on DC motors and controls.
