Torque Metering System Product Evolution
Analog System
Indikon produced over 250 Torque Metering and/or Alignment Systems in the past 30 years. The majority of these were torque only, but we did produce systems for measuring Alignment only and Torque and Alignment. Prior to 1999, these systems were all based upon analog technology. The system needed to be revamped to make it more producible, provide better accuracy, improved features, and utilize new technology.
First Digital System
The first digital Torque Metering Systems were designed and shipped prior to the acquisition of Indikon by Riverhawk in late 1999. A total of twelve (12) systems were produced. Only one such system was shipped after the acquisition, as it had been in process. The new ownership quickly initiated a project to improve the design.
Revised Digital System
The second version of the first digital Torque Metering System followed in 2000. This used the same basic hardware, but included new software and the "Real-Time Alignment" capability. The new software had operational enhancements, significantly simplified calibration, and had a PC application for remote monitoring and automated calibration.
Current Day Torque Only System
Indikon began work on the current day system in 2001, as it became clear that the first digital system hardware design had design limitations. The new system was a complete redesign of electronics with many improvements and it reduced the system from ten printed circuit boards down to three. Overall, this was and is a much simpler and robust design.
Today's systems include a 2 by 40 character vacuum fluorescent display, which replaced the limited seven-segment displays. The system is powered by 24 VDC with an optional internal power supply for AC operation. Three analog outputs are standard (configurable as milliamp or voltage outputs). Selection of units and shaft rotation direction can be done via the keypad or a PC. All configuration and calibration data can be downloaded and saved. Should the monitor fail, the data can be uploaded onto a new monitor and no calibration is needed. Shipments began in 2002.
The current system includes an ESC Module. This is an intermediate box, but its purpose is somewhat different than the I/O Box of the old digital system. The ESC generates the AC to power the in-shaft electronics, conditions signals from the in-shaft electronics, and includes drivers so the monitor can be located up to 2000 feet from the ESC. The ESC also includes adaptive circuitry which eliminates the need for manual adjustments.
Riverhawk's Next Step
Riverhawk is in the process of gaining Torque Meter certifications in the following: ISO 9001, Class 1 Division 1, and Intrinsic Safety.