TEGA

Block Diagrams
Manifolds, Valves, and Gas flow
Updated 4/28/08

4/28/08 CWF V9

Pressure
Sensor ( 0-1Bar )

background reduction

^{4/28/08 CWF V9}Evolved Gas Analyzer

Aker1

P30

P1000 Asco 1 V40

P1001

MF1

F1001

Oven MF2

V60 V7.2

Asco 2

V80

Mars Atm P1002 TA Sample Aker

Mass Spec

MF3

4/28/08 CWF V9

ID			Pressure of Interest			Limits			ID	Frit Description	Pore Size				Conductance
P1000			Carrier Gas Pressure			1 -4.48 Bar					Microns				(SCCM/mb)
P30			Manifold pressure			Appr 38 mB			F10	Carrier Tank Frit	0.2				0.0054
									F30	Regulating frit 1	2 x 2.0				0.019
P50			Oven Pressure			Mars amb < 40 mB
									F1001	Cal Tank Frit	0.2				0.0054
P80			Pressure at Mass Spec Sample Inlet		6 to 30 mB				F50	Oven Entrance frit		0.2				0.0054		CF5
									F60	Oven Exit Frit		2				0.0397		CF4
P1002			Mars Atmosphere		6 – 12 mB*				F80	EGA filter		0.2				0.0054
P1001			Cal Gas Pressure		1 -4.48 Bar				F90	EGA exit filter		2x 1.0,				0.003
												2x 0.5						CF3
ID	Volume Description						Value (cm^3)		F110	Bypass Frit			0.2 CF1				0.003
V10	Pre-regulating valve						0.0075
V20	carrier Post regulating valve						0.2090		F20	Aker Flow Coeff			n/a				0.280
V30	Manifold						0.8920		F40	ASCO Flow Coeff			n/a				0.100
V40	Entrance Volume						1.9570
V50 V60	Oven Volume Exit Volume						0.0530 0.2940		ID	Mass Flow			Value
V71		TA exit conduit						0.6530	MF1	Into Oven				Approx 0.04 SCCM
V72		EGA entrance conduit						0.1850	MF2	Oven Leak				< ±10% of oven
V73		Transfer Tube						0.1600						mass flow
V80 V100		EGA Sample manifold Pre-regulating valve cal						1.5200 0.0075	MF3	Sample into Mass Spec				1e-6 SCCM
V110		Bypass Valve Dead						0.0039	MF4	Mars leak back into				< 1% of sample
		Volume								sample manifold
4/28/08 CWF V9				* Depending on Landed Elevation

CF1 Must tweak this to get correct pressure in EGA when all assembled Chuck Fellows, 1/19/2005

CF3 Measured EQM 4/28/08 Chuck Fellows, 5/16/2008

CF4 measured EQM unused #4 female and unmated cell #2 Chuck Fellows, 5/16/2008

CF5 measured 1 unmated male and two mated halves that give solid estimate Chuck Fellows, 5/16/2008