Freestanding Transducer Interface

Freestanding Transducer Amplifiers

Freestanding transducer interface plugs directly into modular oscillograph and gives power to and amplifies signals from the Harvard Apparatus range of transducers (Isotonic, Isometric, Pressure and Potentiometric).

Item# Description
50-7970 Freestanding Transducer Interface, 115 VAC, 60 HZ
50-7996 Freestanding Transducer Interface, 230 VAC, 50 HZ
For local pricing, contact your nearest distributor.

The Freestanding Interface is AC powered. This interface handles six transducer types using a six-position switch. 

  • Extremely versatile
  • Freestanding model is for direct connection to Data Acquisition Systems, Student Oscillograph or other recording devices

Isometric Tranducer
For force of muscle contraction, use with Harvard Apparatus Isometric Force Transducers. Two series of isometric transducers are available in various load forces, see Harvard Apparatus Isometric Transducers and UF1 Series Isometric Transducers.

Isotonic Transducers
For isotonic muscle contractions, use with 50-6360 Harvard Apparatus Isotonic Transducer. Pivoting beam of Isotonic Transducer gives electrical output proportional to angular rotation.

Pressure Transducers
For direct blood pressure, use with a Blood Pressure Transducer.  Blood Pressure Transducer features removable transparent dome, two Luer fittings, minimum volume and displacement and range of ±300 mmHg.

In this mode, the Transducer Interface responds to changing resistance from the potentiometer, as found in the 50-1676 Student Spirometer. Front panel DC level control permits compensation of DC componenent of output signal. 7-pin DIN female input connector is also located on the front panel the Transducer Interface and allows connection of a variety of transducers.


The Freestanding Transducer Interface measures ( H x  W x D): 95 x 165 x 138 mm (3.75 x 6.5 x 5.25 in) and weighs 750 g. (1.7 lb).

Dimensions (H x W x D) English3.75 x 6.5 x 5.25 in3.75 x 6.5 x 5.25 in
Dimensions (H x W x D) Metric95 x 165 x 138 mm95 x 165 x 138 mm
Freestanding Weight (English)1.7 lb1.7 lb
Freestanding Weight (Metric)750 g750 g
Input Connector7-pin binder socket7-pin binder socket
Output ConnectorBNC leadBNC lead