Yokogawa Integral Oxygen Analyzer ZR202 User Manual

Page 56

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IM 11M13A01-04E

4-6

Piping Diagram

Piping Diagram of Auto Calibration Unit

SPAN IN

REF. IN

ZERO IN

F4.11E.EPS

Calibration gas

Reference gas

ZR202S body

Span-gas
solenoid valve

Span-gas flowmeter

Reference-gas flowmeter

To Air set

To Zero-gas cylinder

Needle valve

Autocalibration unit

Zero-gas flowmeter

Zero-gas
solenoid valve

Check valve

Ensure that the furnace gas does not flow into the probe.

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