OWON HPC78+ 6000 Counts Process DC Voltage & Current/Frequency Multimeter
The HPC78+ is a professional handheld process multimeter that combines high-accuracy electrical measurement with advanced DC voltage and active/passive DC current signal output. Designed for industrial maintenance, commissioning, and loop testing, it offers 0.1% measurement accuracy, a built-in 24 V loop power supply, and a high-resolution 6000-count display for clear and reliable readings.
HPC78+ Process Multimeter – Advanced Handheld Process Signal Generator
The HPC78+ Process Multimeter is a professional-grade handheld instrument designed for industrial process calibration, loop testing, and advanced electrical maintenance. Building on the core strengths of the series, the HPC78+ adds extended measurement ranges, higher resolution, and enhanced signal simulation functions, making it an ideal tool for engineers and technicians in automation, instrumentation, and control systems .
High-Resolution, High-Accuracy Measurement
The HPC78+ features a 6000-count display with basic measurement accuracy up to 0.1%, delivering stable, precise, and easy-to-read results in demanding industrial environments. It supports a wide range of measurements including:
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AC/DC voltage (up to 1000 V DC)
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AC/DC current
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Resistance
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Capacitance
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Frequency
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Continuity and diode testing
In addition, VFC (Variable Frequency Control) voltage measurement allows reliable readings in variable-speed drive and inverter environments where standard multimeters struggle.
Rugged, Portable, and Field-Ready
Designed for industrial use, the HPC78+ features an IP65-rated enclosure (dust- and water-resistant), making it suitable for harsh field conditions. It is powered by three standard AA batteries, offering long operating time with easy replacement. Safety compliance up to CAT IV 600 V provides confidence when working on high-energy electrical systems.
Powerful Process Signal Output Capabilities
Beyond measurement, the HPC78+ functions as a true process signal generator. It provides accurate output of:
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DC voltage
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Active and passive DC current
With output accuracy up to 0.2% and a high-resolution output display, the HPC78+ is well suited for loop calibration, I/O testing, and transmitter verification. The built-in 24 V loop power supply enables simultaneous loop powering and current measurement, simplifying field calibration work.
Realistic Process Simulation Functions
To accurately simulate real-world operating conditions, the HPC78+ supports:
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Manual step output (25% / 100%)
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Auto step output
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Auto ramp output
These features allow technicians to quickly verify control system response during commissioning, troubleshooting, and maintenance without external signal sources.
Clear Display and Operator-Friendly Design
The dual-display layout provides clear feedback during current output, showing both mA values and percentage output simultaneously. A bright backlight and integrated flashlight ensure excellent visibility in poorly lit cabinets and field environments. The Data Hold function allows readings to be frozen for easy recording, while auto power-off helps extend battery life.
| Feature | HPC77+ | HPC78+ | HPC79+ |
|---|---|---|---|
| Display Resolution | 5000 counts | 6000 counts | 6000 counts |
| Basic Measurement Accuracy | Up to 0.1% | Up to 0.1% | Up to 0.1% |
| DC Voltage Output | ✔ | ✔ | ✔ |
| DC Current Output | Up to 20 mA | Up to 30 mA | Up to 30 mA |
| 24V Loop Power | ✔ | ✔ | ✔ |
| Frequency Measurement | — | ✔ | ✔ |
| Frequency Output | — | ✔ | — |
| Thermocouple (TC) Measurement/Output | — | ✔ | ✔ |
| RTD Measurement | — | — | ✔ |
| RTD Output | — | — | ✔ |
| IP65 Protection | No (excludes 77+) | Yes | Yes |
| Best For | Basic loop testing & maintenance | Advanced calibration (incl. frequency & TC) | Full process calibration (TC + RTD) |
Typical Applications
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Process loop testing and calibration
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Industrial maintenance and troubleshooting
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Automation and control system commissioning
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Electrical measurements in variable-frequency environments
Key Features at a Glance
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Process multimeter with integrated signal output
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DC voltage and active/passive DC current output
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24 V loop power with simultaneous current measurement
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0.1% measurement accuracy, 0.2% output accuracy
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6000-count high-resolution display
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VFC voltage measurement
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Manual, auto-step, and auto-ramp output modes
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IP65-rated rugged handheld design with backlight and flashlight
The HPC78+ Process Multimeter is a versatile, professional solution for technicians who require precise measurements, advanced process signal simulation, and rugged reliability in a single handheld instrument.
Accessories subject to final delivery:
- Multimeter Leads
- Aligator Clips
- Quick guide