Operation Of 4 To 20 Output And Relays - Hach LANGE si627 P Manuel D'utilisateur

4. Operation
4.6. Operation of 4 to 20 outputs and Relays
Current output 4 to 20 mA depending on the pH
The analogic output offers 3 levels of different currents:
• 4 to 20 mA for measurement signal (pH or mV).
• 21 mA frozen, or the last mA value measured, when the instrument is in Hold state.
• 22 mA frozen, with the message OUT OF RANGE on display during 1 minute or more. Alarm.
si627 P_HACH_LANGE_Ed.0510.indd ANG:15 si627 P_HACH_LANGE_Ed.0510.indd ANG:15
a b
a = Factory default values
b = Example of values user-programmed
15
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