Smart Photoionization Detector Module PIDS3
User Manual
PIDS3 - User Manual (en) - 1.03.docx
Analytical Control Instruments GmbH, Volmerstraße 9A, 12489 Berlin, Germany, www.aci-berlin.com
Page 23 of 58
8
Operation
8.1
Using the module
Operation scheme
After POWER ON the module performs initialization and warmup sequence.
If measurement autostart is enabled the module enters LAMP CHECK state otherwise IDLE state. In IDLE
state the module is ready to communicate, the lamp is switched off.
Entering the LAMP CHECK state can be initiated by sending the appropriate commands. Thereby the lamp is
switched off and on and is tested. On successful lamp test the MEASURE state is entered.
When in MEASURE state the gas flow indicator value should be around 100 %. When low flow is detected for
60 seconds the module enters IDLE state by itself and switches off the lamp.
The lamp check may be repeated at any time by sending the appropriate command.
When in ERROR state the lamp and optional internal pump is switched off. The ERROR state can only be left
by switch off or reboot the module by sending the appropriate command.
on failure
INIT
IDLE
LAMP CHECK
Action
‘
stop
’
or on
low flow
on failure
ERROR
POWER ON
on failure
WARMUP
Action
‘
reboot
’
Action
‘
start
’
or autostart
enabled
MEASURE
on failure
WARMUP
Action
‘lamp
check’