Gould 13-4615-105141 DC Amplifier Plug-In 25mV to 5V Full Scale X100 Recorder

Gould 13-4615-105141 DC Amplifier Plug-In 25mV to 5V Full Scale X100 Recorder

The Gould 13-4615-105141 is a DC amplifier plug-in module made by Gould Inc. Instruments Division of Cleveland, Ohio, designed to slot into compatible Gould chart recorder mainframes. It conditions and scales DC input signals across a selectable full-scale voltage range, allowing the recorder to accurately trace low-level signals from sensors, transducers, and other DC sources.

Specifications & What's Included

• Part Number: 13-4615-105141
• Manufacturer: Gould Inc. Instruments Division, Cleveland, Ohio, U.S.A.
• Type: DC Amplifier Plug-In Module
• Full-Scale Voltage Range: 25 mV, 50 mV, 0.1 V, 1 V, 2.5 V, 5 V (selectable via front-panel rotary knob)
• Multiplier Switch: x1 / x100
• Zero Suppression: Vernier control with volts+ / off / volts− positions
• Filter: 1 Hz low-pass filter switch (off / 1 / 5 positions)
• Balance (bal) adjustment: front-panel trimmer
• Rear Connector: Multi-pin circular connector plus card-edge connector for mainframe interface
• Form Factor: Plug-in module (slides into recorder mainframe slot)
• Country of Manufacture: United States
• Included: Plug-in module only — no mainframe, cables, or accessories included

Applications

Gould's plug-in DC amplifier modules were standard signal-conditioning components for the company's line of direct-writing chart recorders and oscillographic recorder systems, which were widely used from the 1960s through the 1980s in industrial, defense, and research settings. These plug-ins allowed a single recorder mainframe to handle a wide variety of signal types and ranges simply by swapping or configuring modules — a practical approach common to Gould, Brush, Clevite, and similar recorder platforms of the era. The x1/x100 multiplier and zero suppression vernier gave technicians fine control over signal scaling, making the amplifier useful for recording outputs from strain gauges, thermocouples (with appropriate conditioning), pressure transducers, and other low-level DC sources. Today these modules are sought by operators maintaining vintage Gould recorder systems in legacy test facilities, military depots, and research institutions that still run period-correct equipment.