Go Direct Gas Pressure is used to monitor pressure changes in gas-law experiments in chemistry, biology, and physics.
Note: Vernier products are designed for educational use. Our products are not designed nor are they recommended for any industrial, medical, or commercial process such as life support, patient diagnosis, control of a manufacturing process, or industrial testing of any kind.
Calibrating the Sensor
You do not have to perform a new calibration when using Go Direct Gas Pressure. The sensor is calibrated prior to shipping.
If you do choose to calibrate, a one-point calibration at atmospheric pressure is adequate for most applications. Go Direct Gas Pressure has been calibrated to read station pressure. Station pressure is the true atmospheric pressure at your location, or station. If you prefer it to read sea-level pressure for conducting weather studies, you can perform a one-point calibration to correct for elevation, using the sea-level corrected pressure value for your location obtained from a reputable source (e.g., NOAA, Weather Underground, etc.). Sea-level pressure is the pressure after the station pressure has been adjusted to its equivalent pressure at sea level. This is commonly done to normalize pressures at various altitudes for weather forecasts.
To calibrate the sensor in Graphical Analysis, complete the following steps.
- Click or tap the sensor meter to view sensor options.
- Select Calibrate and follow the applicable prompts on the Calibrate Sensor screen.
Once you have calibrated a Go Direct sensor, the calibration is automatically stored to the sensor and will be used each time you connect to your device. You can always choose to restore factory defaults if you feel the custom calibration is invalid.
Care and Maintenance
Go Direct Gas Pressure contains a small lithium-ion battery. The system is designed to consume very little power and not put heavy demands on the battery. Although the battery is warranted for one year, the expected battery life should be several years. Replacement batteries are available from Vernier (order code: GDX-BAT-300).
Storage and Maintenance
To store Go Direct Gas Pressure for extended periods of time, put the device in sleep mode by holding the Power button down for at least three seconds. The red LED will stop flashing to show that the unit is in sleep mode. Over several months, the battery will discharge but will not be damaged. After such storage, charge the device for a few hours, and the unit will be ready to go.
Exposing the battery to temperatures over 35°C (95°F) will reduce its lifespan. If possible, store the device in an area that is not exposed to temperature extremes.
Go Direct Gas Pressure is not water resistant and should never be immersed in water.
If water gets into the device, immediately power the unit down (press and hold the power button for more than three seconds). Disconnect the sensor and charging cable, and remove the battery. Allow the device to dry thoroughly before attempting to use the device again. Do not attempt to dry using an external heat source.