Ion Science Corvus - Manual (Page 23)

CORVUS MANUAL Ion Science Ltd
Page 23 of 27 Unrivalled Detection. www.ionscience.com
Calibration
Calibration
Note: Please read the entire procedure before beginning the calibration process.
Preparation: For best results Ion Science recommends the following equipment is used to Calibrate
Corvus:-
Zero gas supplied via a 0.3 Litre / min flow regulator
SPAN gas supplied via a 0.3 Litre / min flow regulator
A short length of PTFE lined pipe should be used to connect the Zero and SPAN gas to the Saturation cup
(See photo right).
All pipework should be kept to a minimal length and
should be PTFE lined. Connect the Gas Saturation
Cup (Part number: 871200) to the pipe.
The Corvus cannot be calibrated while it is logging.
To Calibrate a Corvus instrument, connect it to a computer with CorvusPC installed.
Use the USB cable supplied in the accessory pack (Part number: A-877206)
Use the Corvus setting tool to remove the Corvus sensor cover to
reveal the PID sensor.
Set the Corvus to log and leave in the calibration environment for 30
minutes. If calibrating multiple Corvus instruments set them all to data
log via the Master instrument. This will help condition the instrument.
IMPORTANT: When carrying out a calibration keep physical contact to a minimum and avoid breathing on
the instruments as warmth of hands and moisture from breath can affect the temperature and humidity
sensor.
When calibrating multiple instruments, always leave the calibration of the Master to last as it is the Master
that instructs the Slave instruments to remain in log mode.
IMPORTANT: The Corvus cannot be calibrated when logging.
The Group name will temporarily change to ‘CAL’ during the calibration routine. It will revert back when the
calibration is finished.
If calibrating multiple Corvus instruments always calibrate the Master last.
Gas saturation
cup
Flow regulator