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Omega Engineering DFG35 Series User Manual

Digital force gauges
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DFG35
Digital Force Gauges

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Summary of Contents for Omega Engineering DFG35 Series

  • Page 1 DFG35 Digital Force Gauges...
  • Page 2 DFG35 Digital Force Gauges User’s Guide...

  • Page 3: Table Of Contents

    DFG35 Digital Force Gauges User’s Guide Thank you… Thank you for purchasing a Omega DFG35 digital force gauge, designed for tension and compression force testing applications from 0.12 lb to 500 lb (0.5 N to 2,500 N) full scale. The DFG35 is an essential component of a force testing system, typically also comprising a test stand, grips, and data collection software.

  • Page 4: Overview

    DFG35 Digital Force Gauges User’s Guide 1 OVERVIEW 1.1 List of included items Part No. DFG35-0.12 – DFG35-50 – DFG35-200 – Qty. DFG35-20 DFG35-100 DFG35-500 Description 12-1049 12-1049 12-1049 Carrying Case 08-1022 08-1022 08-1022 AC adapter body with US, EU, or UK prong 08-1026 08-1026 08-1026...

  • Page 5: Power

    DFG35 Digital Force Gauges User’s Guide 6. In certain applications, such as the testing of brittle samples that can shatter, or other applications that could lead to a hazardous situation, it is strongly recommended that a machine guarding system be employed to protect the operator and others in the vicinity from shards or debris. 7.

  • Page 6: Mechanical Setup

    DFG35 Digital Force Gauges User’s Guide 3 SETUP 3.1 Mechanical setup 3.1.1 Loading shaft orientation In order to accommodate a variety of testing requirements, the orientation of the loading shaft may be set up in either of the two positions shown below. In order to change the loading shaft orientation, loosen the two captive screws on the back side of the housing, separate the two housing halves, rotate one half 180 degrees, and reassemble.

  • Page 7: Home Screen And Controls

    DFG35 Digital Force Gauges User’s Guide operator and others in the vicinity. If using a grip or fixture from a supplier other than Omega, ensure that it is constructed of suitably rugged materials and components. Do not use jam nuts or tools to tighten grips or attachments onto the shaft. Finger-tighten only. Anti- rotation mounting adapters are available.
  • Page 8 DFG35 Digital Force Gauges User’s Guide Load bar Analog indicator to help identify when an overload condition is imminent. The bar increases either to the right or to the left from the midpoint of the graph. Increasing to the right indicates compression load, increasing to the left indicates tension load.

  • Page 9: Operating Modes

    DFG35 Digital Force Gauges User’s Guide 4.3 Menu navigation basics Most of the gauge’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 10: Digital Filters

    DFG35 Digital Force Gauges User’s Guide The gauge will always power on with the unit selected. 7 DIGITAL FILTERS Digital filters are provided to help smooth out the readings in situations where there is mechanical interference in the work area or test sample. These filters utilize the moving average technique in which consecutive readings are pushed through a buffer and the displayed reading is the average of the buffer contents.

  • Page 11: Communications And Outputs

    DFG35 Digital Force Gauges User’s Guide If two set points have been enabled, they are displayed in the upper left corner of the display. If only one set point has been enabled, the word “OFF” will appear in place of the value. If no set points have been enabled, the upper left corner of the display will be blank.

  • Page 12: Calibration

    DFG35 Digital Force Gauges User’s Guide 9.1.2 Data Format Select the desired data format. The screen appears as follows: DATA FORMAT Numeric + Units Numeric Only Invert Polarity Omit Polarity Selection Description Numeric + Units Output format includes the value and unit of measure. Compression values have positive polarity, tension values have negative polarity.
  • Page 13 DFG35 Digital Force Gauges User’s Guide The gauge can be calibrated at up to 10 points in each direction. Enter the number of calibration points for each direction (compression and tension). At least one point must be selected for each direction.
  • Page 14 DFG35 Digital Force Gauges User’s Guide CALIBRATION COMPRESSION Attach necessary weight fixtures, then press ENTER. Attach weight fixtures (brackets, hooks, etc), as required. Do not yet attach any weights or apply any calibration loads. Then press ENTER. 7. The display will appear as follows: CALIBRATION COMPRESSION Optionally exercise...
  • Page 15 DFG35 Digital Force Gauges User’s Guide Use the UP and DOWN keys to adjust the load value as required. The load values default to even increments, as indicated by the previously entered number of data points (even increments are recommended for best results). For example, if a 50 lbF capacity gauge is calibrated, and 5 data points were selected, the load values will default to 10, 20, 30, 40, and 50 lb.
  • Page 16 DFG35 Digital Force Gauges User’s Guide CALIBRATION Units must be kgF. Please try again Press ENTER. Displayed at the start of calibration if a disallowed unit is selected. CALIBRATION Load not stable. Please try again. Ensure that the load is not swinging, oscillating, or vibrating in any manner. Then try again. CALIBRATION COMPRESSION Load too low.

  • Page 17: Other Settings

    DFG35 Digital Force Gauges User’s Guide 11 OTHER SETTINGS 11.1 Automatic Shutoff The gauge may be configured to automatically power off following a period of inactivity while on battery power. Inactivity is defined as the absence of any key presses or load changes of 100 counts or less. To access these settings, select Automatic Shutoff from the menu.
  • Page 18 DFG35 Digital Force Gauges User’s Guide LCD CONTRAST Set Contrast Press ENTER to modify the contrast. Select a value from 0 to 25, 25 producing the most contrast. 11.4 Tones Audible tones can be enabled for all key presses and alerts, such as overload, set point value reached, etc.

  • Page 19: Specifications

    DFG35 Digital Force Gauges User’s Guide 12 SPECIFICATIONS 12.1 General Accuracy: ±0.3% of full scale Sampling rate: 2,000 Hz Power: AC or rechargeable battery. Low battery indicator appears when battery level is low, and gauge powers off automatically when power reaches critical stage. Backlight on: up to 7 hours of continuous use Battery life: Backlight off: up to 24 hours of continuous use...
  • Page 20 DFG35 Digital Force Gauges User’s Guide 12.3 Capacity, Resolution & Load Cell Deflection Load Cell Capacity Resolution Model Deflection in [mm] 0.005 [0.13] 0.12 0.0001 0.05 0.0005 DFG35-0.12 0.010 [0.25] 0.25 0.0002 0.001 DFG35-0.25 0.0005 0.002 DFG35-0.5 0.010 [0.25] 0.002 0.001 0.01 DFG35-2...
  • Page 21 DFG35 Digital Force Gauges User’s Guide...
  • Page 22 DFG35 Digital Force Gauges User’s Guide M-5085/1017...

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