PEAK
Scientific Instruments Ltd
High Purity Nitrogen Generator
Instructions for use Manual
20
th
September 2007
NM20ZL User Guide Issue 2
6
4
Air Connection
The Nitrogen Generator should be connected to a
clean, dry, OIL - FREE
source of compressed air. A
regulated minimum pressure of 120 psig is required. Any doubts as to the suitability of your compressed
air supply should be referred to the factory for advice.
The generator has a
Breathing Air Filter
with ¼” BSPT connection to the left side of the unit. The
Compressed Air supply should be connected here. This filter will drain moisture and is equipped with an
automatic drain. The drain should be led to a convenient place. There are 3-off ¼” BSPT Female
bulkhead connections to the right of the unit. Fittings are provided to connect these ports to the gas
connections of the Mass Spectrometer.
A kit of fittings for connecting to the Mass Spectrometer is provided with this User Guide.
LC/MS with 3-off Connections (e.g. Api2000)
Connect the 3-off gas ports at the right side of the generator to their respective ports on the Mass
Spectrometer using the 3-off ¼” BSPT x ¼” Swagelok fittings provided. Use ¼” tubing throughout.
LC/MS with 4-off Connections (e.g. Api3000)
Connect
Curtain Gas
and
Exhaust
to their respective ports using ¼” tubing as per above. The
Source
Gas
will have to be split into
Gases 1 & 2
at the Mass Spectrometer. Connect
Gases1 & 2
with 1/8”
tubing to the ¼” Tee Piece supplied with the 2-off ¼” BSPT x 1/8” Swagelok fittings. Connect the inlet
branch of the tee to the
Source Gas
connection at the rear of the generator using ¼” tubing as above.
NB: - to minimize pressure losses position the Tee as close to the Mass Spectrometer as possible.
