Being phase-sensitive carrier-demodulator instruments (rather than fully DC), these models are intended for applications involving transformer coupling to the transducer bridge (as with rotary-transformer torque sensors) and for applications requiring high sensitivity with optimum signal-to-noise characteristics—as, for example, where the electrical environment is especially noisy and there is a need for high amplification of low signal levels.

The Model 3178 Strain Gage Conditioner is the basic "Form 1" instrument.

Being phase-sensitive carrier-demodulator instruments (rather than fully DC), these models are intended for applications involving transformer coupling to the transducer bridge (as with rotary-transformer torque sensors) and for applications requiring high sensitivity with optimum signal-to-noise characteristics—as, for example, where the electrical environment is especially noisy and there is a need for high amplification of low signal levels.

The Model 3178 Strain Gage Conditioner is the basic "Form 1" instrument.

Being phase-sensitive carrier-demodulator instruments (rather than fully DC), these models are intended for applications involving transformer coupling to the transducer bridge (as with rotary-transformer torque sensors) and for applications requiring high sensitivity with optimum signal-to-noise characteristics—as, for example, where the electrical environment is especially noisy and there is a need for high amplification of low signal levels.

The Model 3178 Strain Gage Conditioner is the basic "Form 1" instrument.

These instruments accept any type of AC or pulse input signal, single-ended or differential, irrespective of waveform.  Each instrument produces one standard 5 VDC output, each precisely proportional to the frequency of the source. 

These conditioners are useful for measuring rpm, flow, and other phenomena that can be sensed by frequency-generating devices like magnetic pickups or turbine flowmeters (see the applications listed below).

The Model 3140A Frequency Conditioner is the basic "Form 1" instrument.

These instruments accept any type of AC or pulse input signal, single-ended or differential, irrespective of waveform.  Each instrument produces one standard 5 VDC output, each precisely proportional to the frequency of the source.

These conditioners are useful for measuring rpm, flow, and other phenomena that can be sensed by frequency-generating devices like magnetic pickups or turbine flowmeters (see the applications listed below).

The Model 3140A Frequency Conditioner is the basic "Form 1" instrument.

These instruments accept any type of AC or pulse input signal, single-ended or differential, irrespective of waveform.  Each instrument produces one standard 5 VDC output, each precisely proportional to the frequency of the source.

These conditioners are useful for measuring rpm, flow, and other phenomena that can be sensed by frequency-generating devices like magnetic pickups or turbine flowmeters (see the applications listed below).

The Model 3140A Frequency Conditioner is the basic "Form 1" instrument.

Based on both the Model 4040 Frequency Instrument and the Model 4078 AC Strain Gage Instrument, the Model 4K/HP is a two-channel instrument for accurate measurement of TORQUE, RPM, and HORSEPOWER.

Like the analog input of the 4078, the 4K/HP's torque input channel is of phase-sensitive carrier-amplifier design, and accepts a force-measurement signal from a conventional strain gage transducer with a 4-arm bridge of nominal 350 Ω or higher, and a full-scale range of 0.75, 1.50, or 3.00 mV/V.

Being a phase-sensitive carrier-demodulator instrument (rather than fully DC), the single-channel Model 4078 is intended for applications involving transformer coupling to the transducer bridge (as with rotary-transformer torque sensors) and for applications requiring high sensitivity with optimum signal-to-noise characteristics—as, for example, where the electrical environment is especially noisy and there is a need for high amplification of low signal levels.

The single-channel Model 4040 is used for measurement of flow, rpm, and other phenomena that can be sensed by pulse transformer transducers with two-wire isolated windings (tachometer pickups, turbine flowmeters, etc.), transistor or logic-circuit drivers, "zero-velocity" (true digital output) sensors, and similar frequency-generating transducers.

Being a phase-sensitive carrier-demodulator instrument (rather than fully DC), the Model 3578 is intended for applications involving transformer coupling to the transducer bridge (as with rotary-transformer torque sensors) and for applications requiring high sensitivity with optimum signal-to-noise characteristics—as, for example, where the electrical environment is especially noisy and there is a need for high amplification of low signal levels.