Nephelometer Calibration Form
Nephelometer information before disconnection or calibration:
Site Name:	________		Site ID:	________		Date:	________
Operator:	________				Nephelometer Serial Number:	________________
Nephelometer display value (bs):			________________
Data View value (NEPH):			________________
Percent Difference of (Bs) versus (NEPH):				________________
Psychrometer Temperature at Nephelometer:				________________
Barometric Pressure from DAS (BP):				________________
Nephelometer temp from DAS (NEPHTP):				________________
Nephelometer display values:			P: ______________		T: ______________		Rh:_____________
Nephelometer Zero Calibration data:
Wall Percentage value as found: __________ (If found to be more than 75% call Plano office)
Bscat value as found:		Value 1 __________		Value 2 __________		Value 3 __________
(Bscat number should be 0.00 to + 0.05e-5)
Set Zero parameter number as found: _______________
Bscat value as left:		Value 1 __________		Value 2 __________		Value 3 __________
DAP integer from DAS (NEPH):________________
Set Zero parameter number as left:________________
Nephelometer Span Calibration data:
The ratio should read 2.61e+0 for pure CO2.  Is this value set (Y/N): __________
Bscat value as found:		Value 1 __________		Value 2 __________		Value 3 __________
Gas constant value:		Value 1 __________		Value 2 __________		Value 3 __________
(Bscat number should be as close to Gas number as possible with a +/- .05 tolerance)
Set Span parameter number as found: _______________
Bscat value as left:		Value 1 __________		Value 2 __________		Value 3 __________
Gas constant value:		Value 1 __________		Value 2 __________		Value 3 __________
DAP integer from DAS (NEPH): __________
Set Span parameter number as left: _______________
Nephelometer checks after Calibration:
Nephelometer display value (bs):			________________
Data View value (NEPH):			________________
Percent Difference Bs vs, NEPH: _______________ (Greater than +/-3% requires analog calibration)
Nephelometer display values:			P: ______________		T: ______________		Rh:_____________
Psychrometer Temperature at Nephelometer:				________________
Barometric Pressure DAS (BP):				________________
Nephelometer temp from DAS (NEPHTP):				________________
CO2 bottle pressure remaining (psig):				________________
Wall Percentage value: _______________ (If found to be more than 75% call Plano office)
Flow Check:________________(4-6SLPM)				Leak Check:	________________
Did instrument require cleaning:________________
Signed off by:________________
Date:________________