Product Highlights
Designed with performance and portability in mind, the RX-20, RX-21, & RX-23 deliver lab-quality accuracy in a field-ready form factor.
They’re the perfect fit for mobile professionals and compact workstations, offering precise, repeatable results in a durable and easy-to-deploy unit.
When paired with RADIAN’s Meter Test Boards or software, the RX-20, RX-21, and RX-23 become powerful tools for streamlined energy measurement and calibration.
Precision Perfected with RADIAN
RADIAN RX-20
The RX-20 provides ±0.04% (400 ppm) energy accuracy at 0.5 power factor and serves as a dependable single-phase reference standard for meter testing, calibration activities, and precision measurement applications. It offers consistent measurement performance for single-phase voltage, current, power, and energy while maintaining predictable behavior over time.
Voltage accuracy is 0.02% (200 ppm) and direct AC current accuracy is 0.028% (280 ppm) at TCAL. Power accuracy aligns with the energy class at 0.04% (400 ppm). Long-term drift is managed through a stability specification of 8 ppm × √month, providing stable long-term operation. For energy, the temperature coefficient is 5 ppm/°C, ensuring reliable results as environmental conditions vary.
Performance Highlights
• Power and Energy accuracy: ±0.04% (400 ppm) 0.02% / 200 ppm at PF=1)
• Voltage accuracy: 0.02% (200 ppm)
• Current accuracy: 0.028% (280 ppm)
• Stability: 8 ppm × √month
• Energy temperature coefficient: 5 ppm/°C
• Single-phase reference standard
RADIAN RX-21
The RX-21 delivers ±0.02% (200 ppm) energy accuracy at 0.5 power factor, offering a reduced uncertainty class compared with the RX-20 while maintaining the same single-phase capability. This performance applies to both energy and power, enabling improved traceability and tighter measurement budgets for customers requiring more controlled uncertainty.
Voltage accuracy is 0.01% (100 ppm) and direct AC current accuracy is 0.014% (140 ppm) at TCAL. Long-term drift is minimized with a stability specification of 4 ppm × √month, supporting more consistent measurements over extended periods. For energy, the temperature coefficient is 5 ppm/°C, maintaining reliable performance as temperature conditions shift.
Performance Highlights
• Power and Energy accuracy: ±0.02% (200 ppm) (0.01% / 100 ppm at PF=1)
• Voltage accuracy: 0.01% (100 ppm)
• Current accuracy: 0.014% (140 ppm)
• Stability: 4 ppm × √month
• Energy temperature coefficient: 5 ppm/°C
• Single-phase reference standard
RADIAN RX-23
The RX-23 provides ±0.01% (100 ppm) energy accuracy at 0.5 power factor, representing the tightest energy accuracy class within the single-phase RX-20 series. This accuracy level also applies to power, supporting advanced calibration laboratories and measurement environments that require minimized uncertainty and improved long-term stability.
Voltage accuracy is 0.005% (50 ppm) and direct AC current accuracy is 0.007% (70 ppm) at TCAL. Power accuracy improves to 0.005% (50 ppm) when measured at unity power factor. Long-term drift is controlled through a stability specification of 4 ppm × √month. For energy measurements, the temperature coefficient is 5 ppm/°C, ensuring performance remains consistent across environmental changes.
Performance Highlights
• Power and Energy accuracy: ±0.01% (100 ppm) (0.005% / 50 ppm at PF=1)
• Voltage accuracy: 0.005% (50 ppm)
• Current accuracy: 0.007% (70 ppm)
• Stability: 4 ppm × √month
• Energy temperature coefficient: 5 ppm/°C
• Single-phase reference standard
Features
- ±0.04%, ±0.02%, or ±0.01% Accuracy Class – Provides high-precision, NIST-traceable energy measurement.
- Compact, Portable Design – Lightweight and ideal for field deployment or tight workspace installations.
- Wide Measurement Range – Accurately measures voltage, current, power, energy, and phase angle.
- Versatile Integration – Seamlessly connects with RADIAN and WECO test equipment and software platforms.
- Long-Term Stability – Engineered for consistent performance and minimal drift over time.
- Durable Build – Designed for regular transport and demanding test environments.
- Backed by 17025 accreditation for industry-leading measurement uncertainties and unmatched customer trust over 35+ years.
Dependable Field and Laboratory Meter Testing
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