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µAI 9070 SERIES

Hydrazine Analyzer

THIS PRODUCT IS DISCONTINUED and has been replaced with our NEW Hydrazine Analyzer Aqualyzer® 9071 and the compact version 9071C.

The Waltron µAI Series 9070 Hydrazine Analyzer is a microprocessor-based instrument specifically developed for use in continuous measurement of residual Hydrazine levels in boiler feedwater.

FEATURES

• Automatic Calibration		• Dual Programmable Alarms



• Automatic Sensor Diagnostics		• Dual Isolated Current Outputs



• Automatic pH Compensation		• Remote Range Indication



• Automatic Range Selection

µAI 9070 Sensor Unit
During calibration the 3,way valve is activated, a standard of known hydrazine concentration passesthrough a heat exchanger to equilibriate the solution's temperature to that of the sample. The standard then enters the constant head unit where flow is stabilized. Alkaline buffer vapor is added via a vapor entrainment mechanism before the standard enters the hydrazine cell and flows to drain. During normal operating conditions tile standard solution is replaced by the sample.

hydrazine analyzer flow paths

GENERAL SPECIFICATIONS

Performance



Range		0-100 ppb and 0-1000 ppb with automatic range change and two sets of normally open contacts, one of which closes for remote range indication.



Accuracy		± 5% of reading or ± 2 ppb, whichever is greater for concentrations up to 500 ppb. Less than 10% for concentrations above 500 ppb.



Stability		± 5% of reading or ± 2 ppb per week, whichever is greater.



Response Time		90% of a step change in less than 3 minutes.



Temperature Compensation		Automatic. Reduces sample temperature error to less than 0.5% of reading per degree C.



pH Compensation		Buffer continuously induced into sample flow - Ammonium Hydroxide 0.88 SG (35% WN)



Calibration		Automatic sequence, manually initiated by operator every one to four weeks.



Outputs		Two isolated outputs - switch selectable, 0-10 mA, 0-20 mA or 4-20 mAdc, 1000 ohms maximum.



Alarms		Two voltage-free contacts. Alarm points set transmitter rated at 250V tamp, non-inductive.



Power		120/240VAC (+10%-20%) 50/60 Hz






Operating Conditions



Sample		Temperature: 41-131° F (5-55° C); Flow 25-500 ml/min.



Ambient Temperature		32-131° F (0-55° C).



Pressure		5-100 psig.



Composition		Filter to 60 micron, free of film forming compounds.



Mechanical



Construction		'Two steel cases; flow thru sample cabinet; all wetted parts stainless steel or plastic.



Dimensions		Indicating Transmitter - Width: 11.87", Height: 11.87", Depth: 8.00". Sample Cabinet - Width: 12.13", Height: 16.00", Depth: 8.00".



Mounting		Indicating Transmitter - Four holes: 5/16" diameter, Horizontal: 9.06", Vertical: 9.06". Sample Cabinet - Four holes: 5/16", Horizontal: 9.06", Vertical: 13".



Weight		.Indicating Transmitter- 25 Ibs; Sample Cabinet - 25 Ibs.



Wiring		Six (6) 112" conduit knockouts.



Piping		Sample Inlet: 1/4" OD swagelok. Drain: 3/8" OD tube.



Finish		Corrosion resistant Polyurethane.



Distance		325 feet (100 meters).