Go Direct Respiration Belt uses a force sensor and an adjustable nylon strap to measure respiration effort and rate. An LED indicator provides feedback so belt tension can be optimized for best results. Respiration rate is reported within the software, which makes comparison studies betweens subjects or experiments easy to do. The sensor can also be used measure steps and step rate. The following are some activities and experiments that can be performed using the Go Direct Respiration Belt:
- Study how respiration rate changes after exercise or holding of breath.
- Study how respiration effort changes after exercise or holding of breath.
- Compare resting respiration parameters of athletes and non-athletes.
- Use the built-in pedometer to compare step rate while walking and running.
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.
Using the Product
Place the Go Direct Respiration Belt around the chest or abdomen of the subject. The sensor does not need to rest on the skin; it can be worn over clothing. Secure the sensor to the subject using the strap and clips provided. For best results, position the sensor box so it is located just below the sternum of the subject. The tension indicator light is located in the bottom left corner of the sensor label, just below the checkmark. If the light is not on, tighten the strap until the light turns green. Loosen the strap if the light turns red. A red light indicates too much tension.
Connect the sensor following the steps in the Getting Started section of the user manual.
Go Direct Respiration Belt has four measurement channels:
- Respiration Rate
- Step Rate
Force is a default channel that is active when the sensor is connected. The force channel measures respiration effort. This is the force exerted by the chest during respiration. Inhalation will be observed as an increase in force. Exhalation will be observed as a decrease in force.
Respiration Rate is the other default channel that is active when the sensor is connected. This channel detects inhalations and calculates the number of breaths per minute (BPM). The sample window for the calculation is 30 seconds. The advance interval is 10 seconds. The value will update every 10 seconds.
The Steps channel reports the number of steps that are detected by the sensor. You should zero this channel before collecting data.
The Step Rate channel steps per minute (SPM). The sample window for the calculation is 10 seconds. The advance interval is 10 seconds. The value will update every 10 seconds.
Care and Maintenance
The Go Direct Respiration Belt 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 the Go Direct Respiration Belt for extended periods of time, put the device in sleep mode by holding the 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.
The Go Direct Respiration Belt 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.