Dual Range Digital Torque Transducers

Model # 79700V Series

MCRT 79700V Dual Range Digital Torque Transducers

The MCRT® 79700V Series of Dual Range Digital Torque Transducers will accurately measure low running and high load torque without the cost and inconvenience of swapping two or more conventional torque sensors. Another important application is measuring torque when the ratio of peak torque to average torque is high. In that situation, a conventional torquemeter must be oversized to avoid damage – a process which greatly reduces accuracy. Conditions that create high peak to average ratios include starting, stopping or reversing inertial loads, torsional oscillations, and diesel and single cylinder engine/compressor drives. Additionally, when peak torques are unknown, an MCRT® 79700V reduces the risk of damage from unexpected or accidental torque spikes.

These Dual Range Torquemeters have a LOW range that is 20% of its' HIGH range. Three simultaneous analog outputs can be individually set to 5 or 10 volts at each range full scale. Overrange is 150% to 300% and mechanical overload is 200% of the HIGH range and 1,000% of the LOW range. Digital output of torque, and speed and power with option Z, is available over the resident RS232 serial port. Included software interfaces with Windows based PC's for data display and collection as well as instrument setup.

Each range is calibrated in our accredited laboratory and documented by a NVLAP approved calibration certificate certifying NIST traceability and documenting our laboratory operation and our quality management system meets ISO/IEC 17025-2005. Temperature compensation and CW and CCW dead weight load calibrations are performed on each range.

General Specifications

  Low Range Performance High Range Performance

Combined Nonlinearity and Hysteresis (end point method, % of Range)



Nonrepeatability(% of Range)



Rotational Effect on Zero (% of Range)



Temperature Effects:


Zero (% of Range/deg. F.)



Span (% of Rdg./deg. F.)



Compensated Range

+75 to +175 deg. F.

Minimum Usable Range

-25 to +185 deg. F

Storage Range

-65 to +225 deg. F.

Analog Outputs:



Clockwise (CW) Torque and Power (Option Z) (Volts)

+10 or +5, user selectable

Counterclockwise (CCW) Torque and Power (Option Z) (Volts)

-10 or -5, user selectable

CW & CCW Speed Output (Option Z) (Volts) +10 or +5, user selectable

Minimum Resistive Load

10 kΩ
Maximum Capacitive Load

0.05 μF

Constant Delay Signal Filters Field selectable from 0.1 to 200 Hz in eleven 1-2-5 steps using furnished software
Overrange³ (% of Range)

150 with ±10 volt outputs, 300 on ±5 volt outputs

System Response Torque is sampled at 2 kHz
Supply Voltage5 (Volts dc) 11 to 24 at 150 mA nominal
Power Supply Effect <0.002% of Range/volt
Remote Computer Control All functions can be controlled and/or selected via remote PC using furnishe d software.