Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 137)

IM 11M13A01-04E 10-19
10. Other Functions
10.5.1 Standard Gas Unit Component Identification
Applies the power to operate the
pump to supply the span gas.
Carrying case
Flow checker
Span gas valve
Checks the zero- and
span-gas flow.
Controls the span-gas (air) flow.
Zero gas valve regulator
Tube connection
Cover screws (six pcs.)
Pump
Supplies span gas (air)
Gas cylinder
Contains the zero gas. A gas
of 7 Nl is charged to 700 kPa
Clamp
Clamps the gas cylinder.
Zero gas valve
Attaches to the gas
cylinder for use.
Power cord
F10.14E.EPS
Figure 10.4 Standard Gas Unit Component Identification
10.5.2 Installing Gas Cylinders
Each ZO21S Standard Gas Unit comes with six zero-gas cylinders including a spare.
Each gas cylinder contains 7-liters of gas with a 0.95 to 1.0 vol% O
2
(concentration
varies with each cylinder) and nitrogen, at a pressure of 700 kgPaG (at 35˚C).
The operating details and handling precautions are also printed on the product. Please
read them beforehand.
To install the gas cylinder, follow these steps: