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Hydrazine Analyzer Start-up Guide

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AQUALYZER® 9001 SERIES

Hydrazine Analyzer
Aqualyzer® 9071

The Waltron Aqualyzer® 9071 Hydrazine Analyzer is the most advanced hydrazine instrument specifically developed for use in continuous measurement and determination of hydrazine concentration in boiler feedwater.

Common Hydrazine Analyzer application points in a boiler system for online hydrazine measurement include:deaerator, condensate system and boiler feedwater.

The Aqualyzer® 9071 hydrazine analyzer operates automatically and comes complete with true fully automatic calibration.

Download Hydrazine Analyzer 9071 brochure (PDF)

Aqualyzer 9001 Series, Hydrazine Analyzer, Aqualizer 9071

Please contact us
for panel mount version.

FEATURES		BENEFITS




Wide analysis range: 0.01ppb – 1ppm		Low reagent and standard consumption



True fully automatic 1-point calibration		Minimal maintenance required



Low maintenance: autonomous instrument for up to two months		Automatic operation



Grab sample capability



No change of diffusion tubing



Automatic range selection



Process calibration – calibrate to sample



Two 4-20 mA isolated current outputs



Protection of sensor from “Hot Sample”



Automatic temperature compensation



Automatically stores last 10 calibrations and alarm logs



Rechargeable hydrazine cell

Aqualyzer® 9071 Sensor Unit
During operation,the sample flows through the heat exchanger,passes through constant head (used to stabilize minor changes in flow rate)and through the two solenoid valves. A vapor entrainment mechanism adds alkaline buffer vapor to the sample before it enters the hydrazine cell and flows to drain. Calibration and grab sample are controlled automatically by the analyzer. Standard/grab sample liquid is brought into system via the two 3-way solenoid valves. A thermistor is housed in the sensor and is used to detect the temperature of the sample/standard/grab sample.

GENERAL SPECIFICATIONS

Performance



Range		0 - 1000ppb (1ppm)



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



Stability		± 5% of reading or ± 2ppb 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		Manual and fully automatic calibration. Automatic with programmable frequency in days. Manual initiated by operator.No manual changes of standard during calibration.



Current Outputs		Three isolated 4-20mA current (analog) outputs



Digital Outputs		Communication interface via RS-232 & RS-485 using MODBUS RTU protocol



Alarms		Three voltage-free contacts,alarm points set from transmitter rated at 2A, 250VAC (non-inductive)



Power		Wide range of input power supply 90VAC – 250VAC



CE Certification (on request)		Meets low voltage and low electromagnetic compatibility directives



Operating Conditions



Sample		Temperature: 41 – 131° F (5 – 55° C); Flow 150 – 400 ml/min



Ambient Temperature		32 – 131° F (0 – 55° C)



Pressure		5–30 psig (0.35 – 2.07 bar)



Composition		Sample should be filtered to 60 microns, free of film forming compounds



Mechanical



Construction		Transmitter – high strength ABS, IP65 (NEMA 4x) Wet section – high strength ABS and sheet metal, all wetted parts stainless steel or PVC, IP55 (NEMA 4)



Dimensions		Height = 31” (78.74 cm) including drain, Width = 22” (55.88 cm), Depth = 8.5” (21.59 cm)



Mounting		Four key-style holes: Height = 0.86” (2.18 cm), Top Width = 0.281” (0.714 cm), Radius = 0.28” (0.711 cm) Horizontal: 14.7” (37.34 cm), Vertical: 11” (27.94 cm)



Weight		40 lbs. (18.14 kg)



Wiring		Eight (8) conduit knockouts



Piping		Sample inlet:1/4"(0.635 cm) OD Swagelokt®, Drain: 3/8" (0.953 cm) OD tube



Distance		Up to 325 feet (100 meters) on request



Finish		Corrosion resistant

Hydrazine Analyzer Aqualyzer® 9071

Hydrazine Analyzer
Aqualyzer® 9071