Riken Keiki GD-84D-EX Series, Руководство по эксплуатации

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6. Alarm Activation 6-3 External output operations
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<Analog transmission (4 - 20 mA)>
<Example of gas concentration and external output>
Maintenance output : 2.5 mA setting
Fault output
: 0.5 mA setting
NOTE
 If the fault output is 21.5 mA, the upper limit will be 20.5 mA. In the option setting, the upper limit is
22 mA as is the case of 2.5 mA.
CAUTION

4 - 20 mA output setting has already been adjusted. Output will not exceed approximately 22 mA if
an over scale occurs.

If the INHIBIT function is enabled/active or during initialization, the output will be based on the 4 - 20
mA output setting (as in maintenance mode).
Be particularly careful while the product is starting and when changing the specifications.

Make sure you have a good understanding of this behavior. If necessary, take the necessary steps
on the receiver (e.g., put into skip state.) so that no false alarms occur.

Outputs dependent on sensor settings will be updated after replacement of the sensor.
The following cases in particular require special care:
・ Replacement when [C-02] is displayed : When replacing a sensor whose detection target
gas is O
2
with a sensor for a gas other than O
2
・ Replacement when [C-02] is displayed : When replacing a sensor whose detection target
gas is other than O
2
with a sensor for O
2
・ Replacement when changing the alarm type : Replacing L-LL type and L-H type sensors with H-
HH type sensors
2.5 mA
4 mA
20 mA
22 mA
Full scale
Gas concentration
External output
0
Zero suppression
Detection mode
Maintenance mode