DFS-Digital Force Gauge Instruction Manual Contents Congratulations on your purchase of a Shimpo DFS (Digital Force Gauge). We trust you will enjoy many years of professional results from your DFS for force measurement applications. Please read the entire instruction manual thoroughly before initial set-up and operation; the information contained herein will aid you in operating your Shimpo DFS safely and with excellent results.
Inspection/Standard Accessories If any damage is apparent, do not unpack the DFS. Notify the shipping carrier immediately for damage claim instructions. Refer to the nameplate to confirm model number ordered and record serial number for future reference. Items included with the DFS are: • AC adapter • (4) AA batteries • DFS output connector • Overload protection cable Important Safety Instructions Always wear eye protection when testing materials.
Set-Up Power Every DFS unit is shipped from the factory without the batteries (provided) installed. To install the batteries: 1. Remove the battery plate located at the bottom of the handle using a coin or appropriate screwdriver. 2. Install the (4) AA batteries, observing the proper polarity. 3. Reinsert the battery plate cover, making sure the lip engages properly before tightening. NOTE: If AC adapter operation is preferred, refer to the “Display & Keypad” section of this manual for AC outlet location.
Display & Keypad 1. Sensor Shaft 2. Low Battery Indicator 3. Peak Indicator (NOTE: Refer to “Changing the Measuring Mode” section for explanation) 4. Main Display 5. Small Display 6. Maximum Reading Indicator 7. Minimum Reading Indicator 8. AC Adapter Port 9. > Button 10. HI-LO Button 11. Unit Button 12. Peak Button (NOTE: Refer to “Changing the Measuring Mode” section for explanation) 13. Recall Button 14. Memo Set Button 15. Reset Button 16. On Button 17. Off Button 18. Overload Output Port 19.
Factory Settings Each time the power is turned OFF and ON there are some parameters that the DFS will default to. Consult the section on “Parameter Settings” to customize these default settings. The following chart reflects the default settings as programmed by the factory: PARAMETER Display Update DEFAULT FACTORY SETTING 0.
Operation (continued) 4. Press MEMO SET button to store the measuring mode and exit. NOTE: By keeping the true peak mode “ON”, the DFS will always display the peak samples and not a maximum average. Changing Units of Measure By pressing the UNIT button, the DFS will scroll between English, Metric, and Newton units; once the DFS is turned OFF the unit will default to the factory setting. Instructions to change the default unit of measure setting are as follows: 1.
Operation (continued) Changing Display Update Time The display update time works with the sampling rate (1000 hz) to provide an average reading. All samples taken within the selected update time are averaged (based on 1000 samples/sec) and displayed. To change display update time: 1. Press the PEAK button while holding down the ON button. The small display will exhibit “dSP” and the main display will reflect the current setting. 2. Each time the > button is pressed, the main display will scroll through “0.
Operation (continued) Deleting Data (Single and Continuous Memory Mode) While recalling data (see above) it is possible to delete one data reading at a time or delete the entire memory. To cancel one reading at a time: Press the RECALL button to scroll through the data in memory until the undesired reading is appears on the display. Push the > button to delete that data reading. All higher memory positions will decrement one to fill the deleted position.
Communication with External Devices When operated with the proper cable, the DFS offers a variety of output and input abilities for bi-directional communication with external devices such as computers and data loggers.
Communication With External Devices (continued) RS232 Depending upon the type of data collection device that is being used with the DFS, it may be necessary to adjust the factory settings mentioned at the beginning of this manual. To adjust the RS232 output characteristics: 1. Select the RS232 output (following the above instructions) but do NOT press the MEMO SET button. 2. To set the baud rate, press the HI-LO button.
Communication With External Devices (continued) External Control Commands The chart below lists the ASCII Capital Characters and their functions for controlling the DFS from a computer or other external device: COMMAND FUNCTION DATA External Control Command Descriptions ASCII capital characters ! UNTG, UNTN, UNTL - Change UNITS to Kg, N, lb UNTG CR... Kg(g) UNTN CR... N UNTL CR...
Communication With External Devices (continued) External Control Command Descriptions (continued) ! APF ____________________ Auto-Power-Off APF # CR # = 0: none 3: 3 minutes ! EXS ________________________External Input Setting EXS # CR # = Z: TARE H: HOLD N: NONE ! HLD _________________ HOLD Trigger Mode HLD # CR # = E: EDGE L: LEVEL O: Open Contact C: Closed Contact ! LoG __________________ Memory Mode Setting LoG # CR # =S: Continuous N: Standard ! PKF __________________ PEAK Fast Mode PKF # CR #
Communication With External Devices (continued) Digimatic Digimatic output is used for Mitutoyo data collectors and printers (refer to RS232 memory data output instructions). Analog Analog output is very linear and can have a high response time (1mS). This voltage is directly related to the unit of measurement.
Communication With External Devices (continued) External Control Input NOTE: To activate the comparator cable, either “RS232” or “nonE” needs to be selected under outputs. Using external control input makes it possible to remotely tare or hold the display. The following diagram indicates the pin outs of the DFS: Input: 5VDC, 0.3mA Pulse width: >25ms To select external input: 1. Press the PEAK button while holding down the ON button. The small display will indicate “dSP”. 2.
Communication With External Devices (continued) External Tare To tare, short pins 5 and 10 for at least 25mS. External Hold Choose edge or level trigger and also OPEN or CLOSED condition. Level trigger: OPEN Display holds present value when switch opens. Level trigger: CLOSED Display holds present value when switch closes. Edge trigger: OPEN Display holds present value after switch opens until it is reset. Edge trigger: CLOSED Display holds present value after switch closes unitl it is reset.
Communication With External Devices (continued) Overload Output The DFS possesses an overload output feature (DFS-CTRLCABLE) to protect the load cell or torque sensor. When the load exceeds 150% of its capacity, an open collector transistor turns ON (there are two OC NPN transistors, one for tension and one for compression). The output of these transistors can be used as an alarm or to stop a process, thus protecting the remote sensor or the sample under test.
Parameter Settings The DFS will default to certain parameters when power is turned OFF and ON. To access the parameter settings: 1. Press the PEAK button while holding down the ON button; the small display will indicate “dSP”. 2. Each time the PEAK button is pressed, the DFS will scroll through each of the parameters. 3. Press the RESET button to exit. See the chart below for the location of descriptions of the options within each parameter.
Low Battery Indication The batteries should be changed when “LO BAT” appears on the display. NOTE: Parameters and data in memory can be saved if the AC adapter is plugged in and the DFS is left ON before removing the batteries. Auto Power Off The DFS incorporates a selectable auto power off feature to protect the life of the batteries. If no buttons are pressed or the display has not changed for a period of three minutes, the DFS will automatically shut off.
Calibration (continued) MODEL DFS-0.5 (R) SELECT NUMBER 00 DISPLAY 0.2 CALIBRATION WEIGHT 200g DFS-1 (R) 01 0.5 500g DFS-2 (R) 02 1.0 1000g DFS-5 (R) 03 2.0 2.0kg DFS-10 (R) 04 5.0 5.0kg DFS-20 (R) DFS-50 (R) 05 06 10.0 20.0 10.0kg 20.0kg DFS-100 (R) 07 50.0 50.0kg Please call Shimpo for information on additional sensors.
Dimensions and Specifications MODELS CAPACITY RESOLUTION DFS-0.5 DFS-0.5R 8 oz 200 g 2N DFS-1 DFS-1R 16 oz 500 g 5N DFS-2 DFS-2R 2 lb 1000 g 10 N 0.01 oz 0.1 g DFS-5 DFS-5R 5 lb 2 Kg 20 N 0.
