Product Highlights
Built on RADIAN’s heritage of metrology excellence, the RX‑10, RX-11, and RX-15 combine Xytronic measurement technology, a familiar user interface, and a rugged cube form for seamless integration into existing test equipment and infrastructure.
Whether you’re verifying meters on‑site, calibrating test benches in the lab, or serving as a master standard, the RX‑10, RX-11, and RX-15 ensure timely, trusted results with over 40 simultaneous metrics and a wide autoranging input range (60‑600 VAC, 20 mA‑225 A).


Features
- Xytronic architecture with high‑speed A/D, hermetic references and advanced algorithms for class‑leading performance.
- Accuracy classes: ±0.04% (RX‑10), ±0.02% (RX‑11), ±0.01% (RX‑15) including stability, uncertainty and system errors.
- Measurement suite: voltage, current, phase angle, active/reactive/apparent power & energy, wideband/fundamental, harmonics/THD, vector VA — over 40 metrics concurrently.
- Autoranging inputs: 60‑600 VAC and 20 mA‑225 A for maximum flexibility.
- Familiar five‑button interface with built‑in comparator and legacy compatibility; Ethernet/SCPI control for automation.
- Compact, rugged cube chassis suitable for field, shop, or lab use.
- Backed by ISO/IEC 17025 accreditation for industry-leading measurement uncertainties and unmatched customer trust for over 40 years.
Model Comparison
RADIAN RX-10
The RX-10 provides ±0.04% (400 ppm) energy accuracy, making it a reliable single-phase reference standard for calibration, meter testing, and precision measurement applications. It delivers consistent performance across voltage, current, power, and energy measurements while supporting broad operating ranges suited for utility, laboratory, and production environments.
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 controlled through a stability specification of 16 ppm × √month, providing dependable performance over extended periods. For energy measurements, the temperature coefficient is 5 ppm/°C, supporting stable results under varying environmental conditions.
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: 16 ppm × √month
• Energy temperature coefficient: 5 ppm/°C
• Single-phase reference standard



RADIAN RX-11
The RX-11 delivers ±0.02% (200 ppm) energy accuracy, offering a reduced uncertainty class compared with the RX-10. Its performance supports customers requiring tighter traceability and greater control of uncertainty within single-phase test environments.
Voltage accuracy is 0.01% (100 ppm) and direct AC current accuracy is 0.014% (140 ppm) at TCAL. Long-term precision is supported through a stability specification of 8 ppm × √month, ensuring consistent results over time. For energy measurements, the temperature coefficient is 5 ppm/°C, maintaining reliable performance as ambient conditions vary.
Performance Highlights
• 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: 8 ppm × √month
• Energy temperature coefficient: 5 ppm/°C
• Single-phase reference standard



RADIAN RX-15
The RX-15 provides ±0.01% (100 ppm) energy accuracy, representing the highest accuracy class within the RX-10 series of single-phase reference standards. This accuracy level enables advanced metrology, high-precision calibration, and demanding production testing.
Voltage accuracy is 0.005% (50 ppm) and direct AC current accuracy is 0.007% (70 ppm) at TCAL. Long-term drift is minimized through a stability specification of 4 ppm × √month, enabling excellent long-term measurement stability. For energy measurements, the temperature coefficient is 5 ppm/°C, ensuring consistency across environmental variations.
Performance Highlights
• 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





Delivering Exceptional Accuracy, Precision and Stability
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