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Omega DFG-RS3 User Manual

Digital force/torque indicator
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Model DFG-RS3
Digital Force / Torque Indicator

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Summary of Contents for Omega DFG-RS3

  • Page 1 Model DFG-RS3 Digital Force / Torque Indicator...
  • Page 2 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide...

  • Page 3: Table Of Contents

    For additional information or answers to your questions, please do not hesitate to contact us. Our technical support and engineering teams are eager to assist you. Before use, each person who is to use a Model DFG-RS3 indicator should be fully trained in appropriate operation and safety procedures.

  • Page 4: Overview

    1.2 General Overview The DFG-RS3 is a universal indicator designed for displaying measurements from interchangeable Omega Series RLC and RTQ sensors. These sensors can be handheld or mounted to a fixture or test stand for more sophisticated testing requirements. These sensors may be used with the DFG-RS3 or DFG-RS5 indicators. They may be disconnected from one indicator and connected to another without the need for re-calibration or re-configuration.
  • Page 5 The resolution may be different for some sensors depending on whether the DFG-RS5 or DFG-RS3 indicator is used. For example, a Series RLC01 force sensor will display finer resolution when connected to a DFG-RS5 indicator than when connected to a DFG-RS3 indicator. Resolution information is shown in the sensors’ user’s guide.

  • Page 6: Power

    2 POWER The DFG-RS3 is powered either by an 8.4V NiMH rechargeable battery or by an AC adapter. Since these batteries are subject to self discharge, it may be necessary to recharge the unit after a prolonged period of storage.

  • Page 7: Mechanical Setup

    3.2 Mounting to a plate The DFG-RS3 can be mounted to a plate with four thumb screws fastened into the appropriate holes in the rear half of the housing. Refer to the Dimensions section for detailed hole information and locations.

  • Page 8: Home Screen And Controls

    Model DFG-RS3 Digital Force/Torque Indicator User’s Guide Further instructions for configuring and using the indicator’s outputs are provided in the Communications and Outputs section. 4 HOME SCREEN AND CONTROLS 4.1 Home Screen Name Description Measurement – indicates compression direction (for force sensors) direction –...
  • Page 9 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide gF – Gram-force N – Newton kN – Kilonewton Torque units: lbFin – Pound-inch ozFin – Ounce-inch kgFm – Kilogram-meter kgFmm – Kilogram-millimeter Nm – Newton-meter Ncm – Newton-centimeter Note: not all sensor models display all the above units. Refer to the capacity / resolution table for the respective sensor series for details.

  • Page 10: Digital Filters

    Model DFG-RS3 Digital Force/Torque Indicator User’s Guide 4.3 Menu navigation basics Most of the indicator’s various functions and parameters are configured through the main menu. To access the menu press MENU. Use the UP and DOWN keys to scroll through the items. The current selection is denoted with clear text over a dark background.

  • Page 11: Set Point Indicators

    (if beeps are enabled) until the MENU key has been pressed or the load has been reduced to a safe level. Three operating modes are possible with the DFG-RS3 indicator. To cycle between the modes, press MODE while in the home screen.

  • Page 12: Changing The Units

    The indicator will always power on with the unit selected. 9 COMMUNICATIONS AND OUTPUTS Communication with the DFG-RS3 is achieved through the micro USB port located along the left side of the housing, as shown in the illustration in the Power section. Communication is possible only when the indicator is in the main operating screen (i.e.
  • Page 13 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide Data Bits: Stop Bits: Parity: None Other settings are configured as follows: 9.1.1 Baud Rate Select the baud rate as required for the application. It must be set to the same value as the receiving device.

  • Page 14: Calibration

    The sensor can be calibrated at up to 10 points in each direction. Enter the number of calibration points for each direction (compression and tension or clockwise and counter-clockwise). At least one point must be selected for each direction. For single-direction sensors such as Omega’s Series RLC02, only one direction is allowed.
  • Page 15 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide CALIBRATION OFFSET Place sensor horizontally, then press ZERO. 4. Place the force sensor horizontally on a level surface free from vibration, then press ZERO. The indicator will calculate internal offsets, and the display appears as follows:...
  • Page 16 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide CALIBRATION COMPRESSION Gain adjust Apply full scale load 10.000 lbF +/-20%, then press ENTER. Apply a weight equal to the full scale of the instrument, then press ENTER. 8. After displaying “Please wait…” the display appears as follows:...
  • Page 17 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide CALIBRATION COMPLETE Save & exit Exit w/o saving To save the calibration information, select “Save & exit”. To exit without saving the data select “Exit without saving”. 12. Any errors are reported by the following screens: CALIBRATION Units must be gF.

  • Page 18: Other Settings

    Model DFG-RS3 Digital Force/Torque Indicator User’s Guide CALIBRATION TENSION Load too close to previous. Please try again. The entered calibration point is too close to the previous point. 11 OTHER SETTINGS 11.1 Automatic Shutoff The indicator may be configured to automatically power off following a period of inactivity while on battery power.
  • Page 19 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide 11.3 LCD Contrast The contrast of the display may be adjusted. Select LCD Contrast from the menu. The screen appears as follows: LCD CONTRAST Set Contrast Press ENTER to modify the contrast. Select a value from 0 to 25, 25 producing the most contrast.
  • Page 20 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide RESTORE DEFAULT SETTINGS? 11.7 Information / Welcome Screen The following screen is displayed at power up and can be accessed at any time by selecting Information from the menu: Digital Indicator Model DFG-RS3 Ind.

  • Page 21: Specifications

    Model DFG-RS3 Digital Force/Torque Indicator User’s Guide 12 SPECIFICATIONS 12.1 General Accuracy: ±0.2% of full scale + sensor Sampling rate: 2,000 Hz Power: AC or rechargeable battery. Low battery indicator appears when battery level is low, and indicator powers off automatically when power reaches critical stage.
  • Page 22 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide 12.3 Dimensions IN [MM]...
  • Page 23 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide...
  • Page 24 Model DFG-RS3 Digital Force/Torque Indicator User’s Guide M-5250/1017...

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