3
Specifications
Pressure
Type: Differential
Range: ±500 Pa
Accuracy: ±1 Pa or 3% of reading
Resolution: 0.02 Pa
Flow rate range
±10 L/s
Flow head
Volume: 41 mL
Dimensions: 29.5 mm (diameter) × 82 mm
(length)
Mass: 69 g
Construction: ABS plastic
Adjusted volume calculation
Returns volume to zero after each ventilation
cycle
Cycle volume calculation
Reports the peak volume for each ventilation
cycle
Respiration rate calculation
Sample Window: 30 s
Advance Window: 10 s
Wireless specification
Bluetooth 4.2
Maximum wireless range
30 m
Battery
650 mA Li-Poly
Battery life (single full
charge)
~24 hours
Battery life (long term)
~500 full charge cycles (several years
depending on usage)
Normal operating
temperature range
20ºC to 40ºC
Operating humidity range
5–95% (non-condensing)
Care and Maintenance
Every person must use their own bacterial filter and mouthpiece—do not share
these.
The flow head is not designed to be removed or sterilized by the user. The flow
head can be replaced to extend the life of the product. For more information,
contact Vernier Technical Support at [email protected] or call 888-837-
6437.
Differential Pressure
This channel measures the pressure differential (Pa) across the screen inside the
flow head. This channel is not active by default when the sensor is connected.
Respiration Rate
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. Use this channel
for long experiments. This channel is not active by default when the sensor is
connected.
Calibrating the Sensor
Go Direct Spirometer is factory calibrated and should not require calibration by
the user.
For the most accurate measurements, we recommend adjusting the volume
channel using a 2 L syringe (not included). This is a simple process that takes
only a few minutes.
For further calibration information, see
