RMC Cryosystems CB-200 Current Buffer Full Scale 110/220V 150mA 1-Phase 60Hz BNC

RMC Cryosystems CB-200 Current Buffer Full Scale 110/220V 150mA 1-Phase 60Hz BNC

The RMC Cryosystems CB-200 is a benchtop full-scale current buffer designed for use with RMC Cryosystems cryogenic measurement and control systems. It accepts a low-level current signal from a cryogenic temperature sensor or controller and outputs a buffered, scaled current suitable for driving recorders, meters, or data acquisition equipment. The front panel provides a Full Scale selector switch (0.2, 2, 20, and 200 mA positions) and a Multiplier knob for fine adjustment of the output current range.

Specifications & What's Included

• Model: RMC Cryosystems CB-200 Current Buffer
• Input Voltage: 110/220V AC
• Output Current (Full Scale): 150 mA maximum
• Full Scale Range Settings: 0.2, 2, 20, 200 mA
• Phase: Single Phase (1)
• Frequency: 60 Hz
• Output Connectors: BNC (multiple, visible on rear panel)
• AC Inlet: IEC C14 (120VAC labeled on rear)
• Front Panel Controls: Full Scale selector knob, Multiplier knob, Power switch
• Front Panel Indicators: Output Current (mA) label; side panel LED indicators visible
• Internal Cooling: Nidec Beta V TA225DC fan (24VDC, 0.06A)
• Form Factor: Benchtop, dark gray metal enclosure
• Unit only — no additional accessories included

Applications

The CB-200 is a peripheral instrument in the RMC Cryosystems product ecosystem, which produces closed-cycle cryogenic refrigeration systems and cryostats used in low-temperature physics research, materials characterization, and semiconductor measurement. Current buffers like the CB-200 serve as signal-conditioning intermediaries — they take the sensitive, low-current output of a cryogenic temperature sensor or controller and buffer it to a stable, higher-current signal that can drive peripheral measurement and recording devices without loading the source. This type of instrument was standard in cryogenic laboratory setups from the 1980s through the 1990s, when RMC Cryosystems was active in producing closed-cycle helium refrigerators and associated control electronics. The CB-200 is most relevant to researchers and labs operating legacy RMC Cryosystems cryostats or compatible cryogenic temperature measurement equipment, including those maintaining instruments from that era in ongoing low-temperature or condensed-matter physics work.