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Dual-Range Force Sensor Troubleshooting and FAQs

Dual-Range Force Sensor, order code DFS-BTA, $109
Specifications and User Guide

-Primary Test: Does the sensor read near zero when no force is applied? Does the sensor read a positive value when pulling, and a negative value when pushing?
-Secondary Test: Point the hook downward. With nothing attached, note the reading. Then hang a 500 g mass from the hook and note the new reading. Is the difference approximately 4.9 N?

-Confirm that the switch setting on the sensor is appropriate for the experiment. In general, you should use the +/-10 N range if you can. If the forces exceed 10 newtons, use the +/-50 N range.
-Was the sensor properly zeroed? If you plan to use the Dual-Range Force Sensor in a different orientation (horizontal vs. vertical) than it was calibrated, zero the force sensor in the orientation in which you want to use it. This additional step makes the sensor read exactly zero when no force is applied.

-TIL 1882: How do I put the Vernier Dynamics System mass and the dual range force sensor on the green metal dynamics cart at the same time?
-TIL 757: What is the best way to arrange the Dual-Range Force Sensor and PASCO masses on the same dynamics cart?
-TIL 589: How can I change the sign of the force reading? (Make either push or pull positive or negative)
-TIL 1915: Dual Range Force Sensor does not measure a push, but does work with a pull.
-TIL 1262: Can your force sensors be used in a test section of a wind tunnel for educational demonstrations?
-TIL 681: What is the difference between the Dual Range Force Sensor and the Student Force Sensor?
-TIL 1909: My Dual-Range Force Sensor is noisy when used with a motion detector and LabPro.
-TIL 2698: Why does my data table have holes (empty cells) in it?
-TIL 2149: Problems with force sensor giving bad readings because hex barrel has been removed and improperly reinstalled.
-TIL 2581: What replacement parts available for the Dual Range Force Sensor (DFS-BTA)?
-TIL 3658: Which version Dual-Range Force Sensor do I have?

-TIL 1862: What is the threading on the bumpers and hooks for the Dual Range Force Sensor?
-TIL 2620: What nut size will work the the accessory rod that comes with the Photogate and Dual-Range Force Probe?

-Calibrate? No. The sensor is set to the stored calibration before shipping.
-If you wish to calibrate the sensor, you will conduct a two-point calibration.
First point: Remove all force from the sensor. Enter 0 as the first known force.
Second point: Apply a known force to the sensor by hanging a mass from the hook on the end of the sensor. Enter the weight of the mass (Note: 1 kg applies a force of 9.8 newtons). For calibration using the +/-10 N range, use 300 grams of mass (2.94 newtons). For calibration using the +/-50 N range, use a one kilogram mass (9.8 newtons). Do not exceed the selected range setting during calibration.

-If you wish to store a calibration to the sensor, see TIL 2342: How do I store the calibration for my sensor using Logger Pro?

-Mass for Dynamics Cart, order code MASS, $12
-Air Track Adapter, order code ATA-DFS, $65
-Force Table Adapter, order code FTA-DFS, $35
-Rod for Photogate or Dual-Range Force Sensor, order code ACC-ROD, $4
-Dual-Range Force Sensor Replacement Parts Kit, order code DFS-RPK, $20

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