FIELD: oil production industry. SUBSTANCE: device is intended for dynamometer testing of deep-well sucker rod pumps. Device has force sensor which through hole for pump sucker rod is installed on upper cross-member of rope hanger and is compressed to it by limiter which is secured on upper end of pump sucker rod. Sensor is provided with sensitive loadable members made in the form of bars from magnetostriction material with windings. Sensitive members are located between two metal rings over circumference coaxially with each of rings. Additionally sensor is provided with compensating non-loaded system containing similar number of bars manufactured of same material with windings located in similar manner. Windings of loadable and non-loadable bars are connected to different arms of bridge circuit. Application of aforesaid embodiment of device widens its functional potentialities due to ensuring temperature stability of device and enhancing its reliability. EFFECT: higher efficiency. 2 dwg
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