Beckman RF-221-22 RF Probe 2kHz-200MHz for 22MΩ Meters 85cm Cable

Machine Description

Vintage Beckman RF-221-22 RF Probe, designed for use with compatible 22 MΩ input impedance meters. The RF-221 is a peak-detecting RF probe that extends AC voltage measurement capability into the radio-frequency range. According to Beckman documentation, the probe operates from 2 kHz to 200 MHz and provides a DC output calibrated to correspond to the RMS value of a sine-wave input. This example is marked “MODEL RF-221-22 – FOR 22 MEGΩ IMPEDANCE METERS” and has an approximately 85 cm cable. The probe includes the attached test tip, ground lead/clip and meter connection as pictured. Technical Specifications Specification Value Manufacturer Beckman Instruments Model RF-221-22 Series / Base Model RF-221 Type RF Probe Detection Peak sensing, RMS calibrated Frequency Range 2 kHz–200 MHz Maximum Reading 25 Vrms Input Impedance 1.5 MΩ in parallel with 7 pF Meter Compatibility 22 MΩ impedance meters Accuracy, 2 kHz–10 MHz ±(1% input + 50 mV) Accuracy, 10–100 MHz ±1 dB Accuracy, 100–200 MHz ±6 dB Overvoltage Protection 130 Vrms at 60 Hz or 250 VDC Cable Length Approx. 85 cm Condition Used, fully functional. Compatibility / Application Designed for RF voltage measurements with compatible Beckman and other suitable 22 MΩ input impedance meters. Compatibility with a specific meter should be confirmed by connector type and instrument specifications before use. Package Contents 1 × Beckman RF-221-22 RF Probe with approx. 85 cm cable and attached leads, exactly as pictured. Shopify Tags Beckman, Beckman Instruments, RF-221, RF-221-22, RF probe, radio frequency probe, multimeter probe, 22 megohm, RF measurement, vintage test equipment, electronic test equipment SEO Keywords Beckman RF-221, Beckman RF-221-22, RF probe 200MHz, 22 megohm RF probe, vintage Beckman probe, RF voltage probe, multimeter RF probe Meta Title Beckman RF-221-22 RF Probe 2kHz-200MHz 22MΩ Meta Description Vintage Beckman RF-221-22 peak-detecting RF probe for 22 MΩ meters. Frequency range 2 kHz–200 MHz, maximum reading 25 Vrms, 85 cm cable.