Choosing Zero from the Experiment menu or clicking the Zero button sets the current reading of a sensor to zero. The calibration is not otherwise changed. This is especially useful for Force Sensors and Rotary Motion Sensors.
Note: If more than one sensor is attached, a dialog for choosing the sensor(s) you want zeroed appears. If you have more than two sensors, but only one can be set to zero, you get no message. The sensor that can be set to zero will be zeroed.
You can set the Zero button on the Toolbar. Choose Settings for File from the File menu and check Show Zero Button on Toolbar.
Some sensors should always be zeroed. When the following sensors are used, the Zero button will be automatically placed on the toolbar:
3-Axis Accelerometer
25-g Accelerometer
Low-g Accelerometer
Dual-Force Sensor
Force Plate
Magnetic Field sensor
Student Force Sensor
Current Probe
Rotary Motion Sensor
Hand Dynamometer
Spirometer
The following sensors cannot be zeroed:
Exercise Heart Rate Monitor
Heart Rate Monitor (ear clip)
Hand Grip Heart rate
Radiation Monitor
Student Radiation Monitor
Photogate
Digital Control Unit
Heat Pulser
Drop Counter
Charge
O2
All ISEs
Salinity
All Temperature Probes
You can also zero an individual sensor by choosing Set Up Sensors from the Experiment menu. Click the icon of the sensor you wish to zero, then select Zero from the drop-down menu to zero the target sensor. Note: Make sure that the sensor is in the desired position before selecting Zero.