11. Other functions
11.c- Purge mode
The purge mode enables to freeze the measurement when being displayed, enables to lock the analogue outputs,
and to activate the relay 1, in order to actuate a de-dust system of an air movement conditions system and to activate
the relay 2 in order to isolate the transmitter.
Page 27
Class 200 transmitter configuration via keypad
!
This function is only available on CP 200 pressure transmitters.
Here is the detailed process of purge mode :
1 - Measurement is frozen.
2 - Wait for one second.
3 - Activation of relay 2 (isolation of the transmitter)
4 - Wait for time-delay.
5 (sending compressed air
into the network to clean the installation)
6 - Purge duration
- Activation of relay 1
7 - Deactivation of relay 1 (stop sending
compressed air).
8 - Wait for time-delay.
9 - Deactivation of relay 2
10 - Wait for one second.
11 - Recovery of measurement
Frozen measurement
1 second time delay
Protection duration of
the transmitter
Time-delay of advance of triggering of
t he r el a y 2 c or r e s po n d i ng :
Temporisation
Time-delay of triggering of the relay 2
corresponding : Temporisation
Purge time
Relay 1 : Command of
purge electro-valve
Relay 2 : Command of
isolation electro-valve
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