RKI Instruments SD-1GH, Operating Manual, Page: 31 / 60

- 31 - SD-1GH
CAUTION
• The 4 - 20 mA output is already adjusted. In case of over scale, an output will not exceed 22 mA.
•
Output during INHIBIT or initial clear is based on 4 - 20 mA output setting in Maintenance Mode.
In particular, when the detector is started or the specification is changed, be careful about 4-20
mA output setting. Understand how the detector functions, and take actions, if necessary, so that
the signal receiver side can prepare to avoid false alarms.
7 INHIBIT Depending on the setting of section 4.
2.5 mA setting: 2.5 mA
4 mA, HOLD, 4 - 20 mA setting: 4 mA
8 Power Off 0 mA
Example of Gas Concentration and External Output
4 - 20 mA specification
(Maintenance output: 2.5 mA setting)
2.5 mA
4 mA
20 mA
22 mA
Full scale
Gas concentration
External output
0
Zero
suppression
Detection Mode
Maintenance Mode