Hach 3654 Portable H2/N2 Analyzer manual Sensor Type 31 272 H 31 570 N, PFA Etfe Ectfe

3654 Portable H2/N2 Analyzer - Specifications 57 of 66

Table 7-3: Sensor Specifications - Table 2

Sensor Type		31 272 H2		31 570 N2
Membranes	29561A	2952A	2935A	29561A
Thickness	25 µm	25 µm	25 µm	25 µm
Membrane material	PFA	ETFE	ECTFE	PFA
			(Halar)
Recommended	Waste gas and	Waste gas offgas,	Reactor coolant	Beverage
applications	offgas	reactor coolant	and High H2 level
Radiation limits	105 rad	108 rad	108 rad	105 rad
Measurement range at	0-0.075 ppm, or	0-2.5 ppm, or	0-7.5 ppm, or	0-250 ppm, or
	0-8 cc/kg, or	0-30 cc/kg, or	0-90 cc/kg, or	0-200 ml/L, or
25°C
	0-0.5 bar	0-1.5 bar	0-4.5 bar	0-15 bar
	The greater of	The greater of	The greater of	The greater of
Accuracy (sample temp.	±1% of reading	±1% of reading	±1% of reading	±2% of reading
20-50°C within ± 5°C of	or ± 2 ppb,	or ± 8 ppb,	or ± 25 ppb,	or ± 0.5 ppm,
calibration temperature)	or ± 0.03 cc/kg,	or ± 0.1cc/kg,	or ± 0.25 cc/kg,	or ± 0.5 ml/L,
	or ± 2 mbar	or ± 6 mbar	or ± 15 mbar	or ± 30 mbar
	The greater of	The greater of	The greater of	The greater of
Accuracy (sample temp.	±2% of reading or	±2% of reading	±2% of reading	±4% of reading
0-50°C independent of	± 60 ppb or	or ± 250 ppb	or ± 600 ppb	or ± 2 ppm,
calibration temperature)	± 0.7 cc/kg or	or ± 2.5 cc/kg,	or ± 6.0 cc/kg,	or ± 1.6 ml/L,
	± 25 mbar	or ± 80 mbar	or ± 200 mbar	or ± 70 mbar
Measurement cycle		20
(sec.)
Sample flow rate	200 ml/min	100 ml/min	50 ml/min	150 ml/min
(through flow chamber)

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