Product Description
NUVAIR 3547 HELIUM/OXYGEN ANALYZER - New open packaging
The Nuvair PRO HE is a dedicated instrument designed to accurately monitor the composition of a gas during mixing or cylinder filling operations. A LCD mounted on the front panel of the instrument displays the percentage of helium during the mixing operation.
There are two basic configurations available both of which offer oxygen analysis as an option. The wall-mountable unit is housed in an enclosure equipped with a window for viewing the helium displays. It is powered by a plug-in 6V DC adapter which uses a conventional 120VAC source (100- 240 VAC 50/60 Hz optional).
The portable instrument is housed in a rugged high-impact plastic watertight enclosure. It has a molded-in handle for easily transporting the instrument to the mixing or process area. Both models, the standard wall-mount and the portable instrument, use corrosive-resistant materials where applicable for enhanced durability in salt air or spray environments.
The PRO HE analyzes the helium concentrations in a gas mixture. The gas to be monitored is drawn into the analyzer and passed to the sensor network.
The sample gas is then directed to a thermal conductivity sensor. This sensor provides a signal that is proportional to the difference in conductivities between the components of the gas mixture. A microprocessor compares the sensor output to data contained in an onboard chip and converts the raw data into a linearized signal that is sent to the helium LCD display.
Accuracy is maintained to ± 1% across the entire 0-100% analysis range (He) of the instrument at constant temperature (25°C) at constant pressure (atmospheric)
The following features are included in the PRO HE:
Two independent easy to read LCD display for He
Low power consumption—up to 150 operational hours on 4 C-cell batteries (portable unit)
Convenient front panel ON-OFF power switch with Battery Test Front panel mounted Span and Zero calibration potentiometers Linearized He channel output over the entire analysis range
Accessible 1/8” NPT inlet and outlet gas connections for easy setup (wall mount unit) Microprocessor controlled electronics
Long-life, low temperature solid state thermal conductivity sensor for accurate helium analysis
ABS enclosure for wall-mounting—rugged water resistant plastic housing for portable model
Low pressure power inflator hose sampling adapter
The PRO HE is specifically offered to the diving industry where specific mixtures of Helium in air are required for technical diving. The PRO HE will allow on-site confirmation of gas mixtures prepared for divers. It is also useful in the gas mixing process during cylinder charging where adjustments to the gas composition can be made based on the real-time analysis of the gas mixture.
Other applications include:
Gas purification and air liquefaction process control
