Yokogawa Low Concentration (ppm) Zirconia Oxygen Analyzer OX400 - Manual (Page 34)

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5. Names and Functions>
5-1
IM 11M10B01-01E
5. Names and Functions
5.1 Front Panel
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Figure 5.1 Description of Front Panel
1 Main Display
The main display digitally displays the oxygen concentration and set value in four digits with a
decimal point. The display flashes at one-second intervals while waiting for key input.
2 Oxygen Concentration Unit LED
The unit of displayed oxygen concentration is displayed by LED. The LED is not on when a non-
oxygen concentration value is displayed. The unit you selected flashes until you confirm it.
3 MODE LED
The LED turns on when you push the MODE switch to enable the maintenance mode. The LED
is off in the measurement mode.
4 ERR/ALM LED
The event of an error causes the LED to turn on. The event of an alarm causes the LED to flash.
If an error and alarm occur at the same time, the error is given priority and the LED turns on. The
LED is off during normal operation.
5 Sub-Display
The sub-display displays the description of the currently displayed item or menu item in four
digits with a decimal point. If an error or alarm occurs, the error or alarm code corresponding to
the content is displayed. “HEAt” is displayed during the warm-up period.
6 Flowmeter
The flowmeter uses a floater to indicate the flow rate of gas flowing into the sensor. Always set
the value to 200 ±25 ml/min (a floater should be between upper and lower bar of the 200 ml/min
bar on flowmeter).
7 MODE Key
Hold down the key for 2 seconds to switch from the measurement mode to the maintenance
mode (or from the maintenance mode to the measurement mode).