Teledyne gfc 7000ta Range Units, To change the concentration units, Exit returns To the main menu

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer

6.8.6. Range Units

The GFC 7000TA can display concentrations in parts per billion (109 mols per mol, PPB), parts per million (106 mols per mol, PPM), micrograms per cubic meter (µg/m3, UG), milligrams per cubic meter (mg/m3, MG) or percent (volume CO2/volume sample gas, %). Changing units affects all of the display, analog outputs, COM port and DAS values for all reporting ranges regardless of the analyzer’s range mode.

NOTE

Concentrations displayed in mg/m3 and ug/m3 use 0°C, 760 mmHg for Standard

Temperature and Pressure (STP). Consult your local regulations for the STP used

by your agency.

Conversion factors from volumetric to mass units are:

CO2: ppb x 1.96 = µg/m3; ppm x 1.96 = mg/m3

To change the concentration units:

Select the preferred concentration unit.

SAMPLE	RANGE = 500.00 PPB	CO2=X.XXX
< TST TST > CAL		SETUP
SETUP X.X	PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE		EXIT
SETUP X.X	RANGE CONTROL MENU
MODE SET UNIT		EXIT
SETUP X.X	CONC UNITS: PPM
PPM PPB	UGM MGM %	ENTER EXIT

EXIT returns

to the main menu.

ENTR accepts

SETUP X.X CONC UNITS: %

PPM PPB UGM MGM % ENTER EXIT

the new unit, EXIT returns to the SETUP menu.

NOTE

Once the units of measurement have been changed the unit MUST be recalibrated, as the “expected span values” previously in effect will no longer be valid. Simply entering new expected span values without running the entire calibration routine is not sufficient.

Teledyne Analytical Instruments 95