Air Liquide Taema OPTI-NO, User Manual

Page: 60 / 64

Taema OPTI-NO
Version 1.0 10/98.
code YL019000 A - 2
GB
This specification define the characteristics of the OPTI-NO gas supply device in the case of the Taema
CL310001 pressure regulator not being used.
The OPTI-NO unit and the gas supply device are designed to be used with NO/N
2
mixtures with an NO content
≤
1000 ppm.
The material of the components in contact with the gas must be NO compatible, in order to avoid it decomposing
and NO
x
forming.
Cylinder connection: if there are no specific connectors for this mixture (see national standards) a Nitrogen type
connector should preferably be used.
The
OPTI-NO unit must be supplied at a pressure which can be adjusted between 0 and 8 relative bar.
It must be protected against any possible excess pressures from 9 relative bar upwards.
It must also be protected against impurities or particles entering by means of a grade 40 sintered stainless steel
filter (stops 99.9% of particles of diameter
3
/
4
20
µ
m).
A GYROLOK
®
‚ type stainless steel «double bush» system for 6 mm tubes must be used for the connection to
the unit.
The pressure regulation device must have the following characteristics:
- operating temperature -20
°
C to +50
°
C
- pressure increase coefficient when closed R
1
/
4
0.1 (test in accordance with ISO 2503)
- irregularity coefficient I
1
/
4
0.1 (test in accordance with ISO 2503)
- fidelity coefficient f
1
/
4
0.5% .
P’ - P"
f = ————
P
where P is the outlet pressure setting and P’ and P" are extreme values of this pressure in continuous or
intermittent operation. This coefficient is expressed in % of the pressure P, for a same flow rate.
- internal/external leak rate
1
/
4
3x10
-7
atm.cm
3
/s of helium.
The materials used must be checked to ensure they are bio-compatible.
The use of any other device than the pressure regulator code CL310001 must be validated by a check of the
accuracy of the concentrations of NO:
±
0.5 ppm from 1 to 5 ppm
±
1 ppm from 6 to 10 ppm
±
2 ppm from 11 to 20 ppm
TECHNICAL SPECIFICATIONS FOR THE REGULATOR