Hach 3654 Portable H2/N2 Analyzer manual Calibrations, Accessories and Attachments

2 of 66Table of Contents - 3654 Portable H2/N2 Analyzer

		3.4.2	Measurement Units	30
		3.4.3	Membrane Selection	31
		3.4.4	Automatic Data Acquisition - Setting Sampling Intervals .....31
		3.4.5	Calibration Medium	32
		3.4.6 Locking Out the Instrument’s CAL Button		32
		3.4.7	Rolling Average	32
		3.4.8	Automatic Shutdown	33
		3.4.9	Measurement Mode	33
4	Calibrations
	4.1	Barometric Pressure Sensor Calibration		35
	4.2	Sensor Calibration		36
		4.2.1	Calibration Setup	37
		4.2.2 Calibration In H2 or N2 at Atmospheric Pressure		38
		4.2.3 Calibration In H2 or N2 at Elevated Pressure		39
		4.2.4 Calibrating In a Liquid H2 or N2 Solution		40
5	Accessories and Attachments
	5.1	Model 32311 Flow Meter		41
	5.2	Model 32939 External Power Supply		42
6	Maintenance and Troubleshooting
	6.1	Power Supply		43
	6.2	Sensor Maintenance		43
		6.2.1	Maintenance Schedule	43
		6.2.2 Testing the Sensor Condition		43
		6.2.3	Mounting Dual Membranes	44
	6.3	Membrane Replacement		44
		6.3.1	Removing the Membrane	44
		6.3.2	Installing the Membrane	45
	6.4	Purge Gas Cylinder Refill		48
		6.4.1	N2 Purge Gas	48
		6.4.2	CO2 Purge Gas	49
		6.4.3 Filling the Purge Gas Cylinder		49
	6.5	Troubleshooting - Instrument		50
		6.5.1	Serial Test	50
		6.5.2	Keyboard Test	50
		6.5.3	Display Test	51
		6.5.4	Clock Settings	51
		6.5.5	Analog Voltages View	52
		6.5.6	Measurements View	52
	6.6	Troubleshooting - Operation		53
		6.6.1	Program Identification	53
		6.6.2	Diagnostics Messages	53
		6.6.3	Continuous Purge	53
		6.6.4	Troubleshooting Table	54
ORBISPHERE				Operator Manual