Rae QRAE 3 User Manual

Also see for QRAE 3: Quick start guide

Rae QRAE 3 User Manual Manual pdf 22 page image

198.3.2. CalibrationUse this menu to perform zero or span calibration for one or more sensors, and change the gasconcentration value assumed to be used in span calibration, as well as zero calibration and calibrationreference gas.8.3.2.1. Multi BumpDepending on the configuration of your QRAE 3 and the span gas you have, you can perform abump test simultaneously on multiple sensors.The selected sensors and their values are shown on the screen. With calibration gas connected tothe instrument, start a multiple bump test by pressing [Y/+]. If you do not want to perform amultiple bump test, press [MODE].Note: You can abort a multiple bump test by pressing [MODE] once testing has started.When the Multi Bump test is done, a screen is shown, with the sensor names and either “Pass” or“Fail” shown next to them.8.3.2.2. Multi ZeroYou can perform a zero calibration simultaneously on multiple sensors. This proceduredetermines the zero point of the sensor calibration curve for all the sensors that require a zerocalibration. The instrument should be zero calibrated in clean ambient air with 20.9% oxygen. Azero calibration should precede a span calibration.The selected sensors are shown on the screen. Start a multiple zero test by pressing [Y/+]. If youdo not want to perform a test, press [MODE].Note: You can abort a multiple zero test by pressing [MODE] once testing has started.When the Multi Zero test is done, a screen labeled Calibration Results is shown, with the sensornames and either “Pass” or “Fail” shown next to them.8.3.2.3. Multi SpanDepending on the configuration of your QRAE 3 and the span gas you have, you can perform aspan calibration simultaneously on multiple sensors.The selected sensors and their values are shown on the screen. With calibration gas connected tothe instrument and turned on, start a multiple span calibration by pressing [Y/+]. If you do notwant to perform a multiple span calibration, press [MODE].Note: You can abort a multiple span calibration by pressing [MODE] once testing has started.When the Multi Span calibration is done, a screen labeled Calibration Results is shown, with thesensor names and either “Pass” or “Fail” shown next to them.8.3.2.4. Single BumpYou can perform a separate bump test on each individual sensor.The active sensors’ names are shown in a list. Press [MODE] to highlight the sensor you want tobump test, and then press [Y/+] to select it.