MCRT^® 86000V Bearingless Digital Torque Transducers (Torque Flanges)

MCRT®86000V Torque Transducers output shaft torque with 0.01% resolution. Digital, Analog and FM formats are simultaneously available. Industries highest overload and overrange ratings assure safety and accuracy even when the driveline has high peak to average torque ratios. Important features include non-critical installation, temperature data, max/min capture and absence of manual adjustments.

Range, scaling, calibration and null data are stored in rotor nonvolatile memory and transferred to the stator during startup. That assures accuracy, without re-calibration, if rotors and stators are replaced or intermixed. Bi-polar, rotor shunt cal can be enabled with stator switches, logic I/O or, via the Com Port. Choose from ten units of measure without re-calibrating. When you re-calibrate, earlier calibrations are archived. Eleven selectable Bessel data filters avoid overshoot errors and delay distortion.

Multiple bridges sense torque and provide immunity to extraneous loads. The radial torque path yields short length, unsurpassed torsional stiffness and deflection resulting in the highest installed system response. The torquemeter attaches to your drive without an additional coupling. The result is low overhung moment, short length and minimal installed space. Himmelstein has made similar, radial path sensors for decades including automotive torque wheels, pulley torquemeters and chassis roll torque sensors.

The sensors’ output is digitized on the rotor and then sent to the stator where analog, frequency and Com Port outputs are created. Choose RS232, RS422, or RS485 communications. Included software interfaces with your Windows-based PC. It displays real time data, does time plots and stores test results. Password protection may be invoked.

Exceptional Immunity To Noise And Interference From ISM Transmitters

To achieve short length, high stiffness and wide signal bandwidth, bearingless sensors use unshielded antennae. As a result, any device (including a like torquemeter) operating at or near its carrier frequency, can cause interference and data errors.

Of special concern are Industrial, Scientific and Medical (ISM) devices. Under FCC rules, they can generate unlimited energy and field strength. High power ISM devices are commonplace in industrial environments. Furthermore, billions of RFID tags also operate at ISM frequencies. These ubiquitous products are used for inventory control, parts tracking, controlling personnel access, etc.

Most Bearingless Torque Flanges use a single ISM frequency for power and data; usually 6.78 or 13.56 MHz. As a result, they are susceptible to interference from ISM Transmitters. Furthermore, FCC rules permit high power/fields only within a narrow band; ±7 kHz for a 13.56 MHz device. For unlicensed use outside that band, field strength must be low; # 25 μV/m at 300 meters for
a 13.56 MHz carrier. Because real-time data transmissions are several MHz wide, these devices risk violation of FCC regulations.

Himmelstein Bearingless Torque Transducers tolerate ISM devices and other noise sources. They use separate non-ISM frequencies for power and data, have field strengths within FCC rules, powerful 12 pole signal filters and near field (not radiated field) signal transfer. Should a proprietary algorithm detect noise or interference, the system automatically shifts to a clear channel. An important benefit of this feature is the ability to install torquemeters close to each other without interference. That can make possible otherwise impractical installations and can yield significant space and cost savings.

General Specifications