Galvanic Applied Sciences 962-AGX, Operation Manual

Page: 9 / 100

Revision 1 9 9/10/2019
During normal operation, toxic gases, (e.g. H
2
S, and CO
2
) are present in the tubing,
measurement cell, and all other system components through which the gas sample flows. They
should not be opened before the complete system is purged with zero gas (an inert gas such as
nitrogen), and the system is blocked using the two valves identified as Sample Flow and Vent
Flow on/off valves.
Purging of the system should be performed with both valves in the open position and maintained
for approximately five (5) minutes. Once purging is complete, and with the purge gas still flowing,
the two valves should be switched to the ‘Off’ position. The purge gas can now be shut off and
the tubing or associated apparatus opened.
The sampling system will be under positive pressure. Loosen a fitting and allow the pressure to
be released before completely disconnecting the tubing.
The measurement cell assembly is enclosed in an oven cabinet that is heated and maintained at
approximately 50ºC/120ºF to prevent the condensation of water. Maintenance performed before
the cooling of the oven and hardware should be done while wearing suitable protective clothing,
eye wear, and gloves to prevent burns to the hands and arms.
Due to the thermal mass of the hardware, cooling of the internal components of
the system takes substantial time.
The system includes an ultraviolet spectrometer which employs a source that generates intense
UV radiation that is transmitted to the measurement cell and spectrometer through fibre optic
cables.
This radiation is extremely harmful to the naked eye and skin, even in short duration exposures.
Always extinguish the UV radiation source (lamp) before removing a fibre optic cable or the lamp
power supply cover by turning the AC power to the lamp power supply ‘Off’. Should the lamp be
turned on for any reason while the cover is off, ensure that certified eye protection is worn and
that the exposure is limited to the bare minimum.
Although the UV radiation is transmitted through a narrow diameter fibre, it should never be
viewed directly. The beam is extremely intense and will cause permanent eye damage. Should
visual inspection of the beam be required, point the end of the fibre at an inanimate object and
view the illumination reflection. Never expose human skin to the radiation from the optical fibres.
The system is powered by AC Mains (120 or 240 volt) electrical power. Higher level voltages may
be present in several system modules where transformers are present (i.e., the UV lamp power
supply). Follow user company procedures regarding best practices and safety recommendations
for any electrical work, repair, and maintenance.
The 962-AGX analyzer is designed to be safely operated in a Class I, Division 2, Groups C & D,
T3 (NEC and CEC) area by means of a Type Z purge system installed on the analyzer control
cabinet. Follow the user company’s published practice and/or regulatory agency’s procedures for
initial start-up, operation and shut down of this type of purged system.