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Gas Supply Requirements
The workstation gas supplies are located at the rear of the unit as shown in Figure 1.
For standard physiological environment operation of the workstation the gas
requirements are:
Gas
Symbol
Specification
Regulator Output
Pressure
Nitrogen
N
2
Oxygen Free
(Industrial or medical)
58 to 72.5psi
(4 to 5 bar)
Carbon Dioxide
CO
2
100%
(Industrial or medical)
42 to 49psi
(3 to 3.5 bar)
Air
N/A
Compressed
(Industrial or medical)
42 to 49psi
(3 to 3.5 bar)
Table 4: Standard Gases
Additional operational modes are available which will require the following gas
connections:
Gas
Symbol
Specification
Replaces Use
Regulator
Output
Pressure
5%
Hydrogen in
Nitrogen*
H
2
/N
2
Maximum of 5.5%
Hydrogen in Nitrogen
(Industrial or medical)
N/A
For anoxic
mode
42 to 49psi
(3 to 3.5 bar)
25% Oxygen
in Nitrogen
O
2
/N
2
Maximum of 25%
Oxygen in Nitrogen
(Industrial or medical)
Air
For oxygen
levels between
17% and 23%
42 to 49psi
(3 to 3.5 bar)
Table 5: Additional gases for specific operating modes
Figure 2: Gas Connection Graphic
For the gas supply we recommend direct connections of the gas bottle regulator to ensure
minimal pressure drops and flow rate restrictions.
The gas regulator should provide a minimum supply pressure of 3 bar gauge. The
maximum supply pressure permissible is 5 bar gauge. A supply pressure greater than this
will damage internal components of the InvivO
2
1000 Dual Workstation and will invalidate
the warranty.
Only the above stated gases are to be used with the workstation. Failure to comply with
this may cause the product to become hazardous.
* - Recommended Hydrogen concentrations are compliant to BS EN ISO 10165:2010
(Classification of Flammable Gasses). The use of Hydrogen concentrations up to a
