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MCRT® 88700V Series Dual Range Bearingless Digital Torque Transducers (Torque Flanges)
MCRT 88700V Bearingless Dual Range Digital Torque Transducer
• Industries Highest Overrange and Overload
• World Class Temperature Performance
• Greatest Immunity to External Noise
 
Available Options Enhanced Performance (code C)
  Optical Speed Pickup (code O)
  Magnetic Speed Pickup (code Z)
Specification Sheet Bulletin 7406H
Compatible Readouts Model 703 or 723
 Model Number   Low Range   High Range   Speed Rating   Outline Drawings 
(lbf-in)
(Nm) (lbf-in)
(Nm) (rpm) CAD pdf
88702V(1-3) 200
22.6 1,000
113 15,000  88702.dwg   88702.pdf 
88704V(2-3) 400 45.2 2,000 226 13,500 88704.dwg 88704.pdf
88704V(5-3) 1,000 113 5,000 565 13,500
88704V(1-4) 2,000 226 10,000 1,130 13,500
88707V(2-4) 4,000 452 20,000 2,260 10,000 88707.dwg 88707.pdf
88707V(5-4) 10,000 1,130 50,000 5,650 10,000
88707V(1-5)  20,000    2,260     100,000    11,300   10,000

The MCRT® 88700V 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® 88700V reduces the risk of damage from unexpected or accidental torque spikes.

These Dual Range Torquemeters have high accuracy in real-world applications, not just in the cal lab. They have the industries highest Overrange ratings, which avoids clipping real-world torque peaks and driveline torsionsals. Without sufficient Overrange, clipped torques will produce large measurement errors.

Each range is calibrated CW and CCW 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. A bi-directional rotor shunt cal berifies the entire CW and CCW data chains. It may be invoked from switches, I/O lines or your computer.

General Specifications

  Standard Code N Performance Enhanced Code C Performance
  High Range Low Range High Range Low Range

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

≤±0.10

≤±0.05

Nonrepeatability(% of Range)

≤±0.05 ≤±0.07

≤±0.020

≤±0.05

Temperature Effects:

   

Zero (% of Range/deg. F.)

≤±0.001 ≤±0.005

≤±0.0006

≤±0.003

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

≤±0.002

≤±0.001

Compensated Range

+75 to +175 deg. F.

Minimum Usable Range

-25 to +185 deg. F

Storage Range -65 to +225 deg. F.

Rotor to Stator Maximum Misalignment (inches)

Axial: ±04, Radial: 0.3, with or without Code O Optical Pickup
If Code Z magnetic pickup is used, radial alignment must be held within ±0.020 and axial alignment within ±0.040.

Analog Torque Output:

 

 

Clockwise (CW)

+10.000 volts or +5.000 volts, user selectable

Counterclockwise (CCW)

-10.000 voltsor -5.000 volts, user selectable

Minimum Load

≥10 kΩ Resistive, ≤0.05 μF capacitive
Frequency Modulated Output

10±5 kHz, 20±10 kHz or 40±20 kHz; software changeable

Constant Delay Signal Filters Field selectable from 1 to 1,000 Hz in ten 1-2-5 steps plus 3 kHz using furnished software
Overrange³

≥ 150% of High Range and &ge% 300% of Low Range except Analog Output is linited to ±15V. 

System Response Torque is sampled at 21 kHz. Analog output bandwidth is 3 kHz, reducible by filtering.
System Resolution High Range: ≥0.01% on all outputs. Internal data resolution is 24bits.
Low Range: ≥0.025% of range (≥0.005% of High Range) on all outputs. 
Supply Voltage5 (Volts dc) 10 to 26 at 6 Watts


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