Analogue Output State - Prosense Safevader Series User Manual

Analogue Output State:

Analogue output of equipment provides state information to external devices via current level.
The output provides signal between 0- 22mA:
• Equipment provides meaningful measurment level between 4-20mA current level. The
external device must evaluate 4-20mA current level as measurement level information. The
evaluation of measuement level regarding a dangerous gas concentration must be performed
by an external device.
Equipment provides 0-2mA current level when it detects any internal error. The external
•
device must evaluate 0-2mA current level as fault condition.
Equipment provides 20-22mA current level as overrange state indication. The external
•
device must evaluate 20-22mA current level as overrange condition which is a dangerous gas
concentration.
State details and indications are given in below tables:
SAFEVADER Analogue output states and indications
Signal
Warm-up Device is working and waiting for
sensor stabilization after power-
on. Actual measurement level is
not used to provide measurement
result or alarm generation.
Fault Device is in fault condition, not
performing measurement
Calibration Device is working and performing
calibration for sensor. Actual
measurement level is not used to
provide measurement result or
alarm generation.
Normal Device is performing
Alarm Measured gas level is higher than
defined alarm level
Overrange Measured gas level is higher than
measurement range
Underrange Measured gas level is deviated
tha minimum allowed level
PRS-UM-SV-EN-Rev1.0-16.12.2022
Meaning
measurement
Table 5: SAFEVADER Analogue output states and indications
Output(mA) Power LED
3 blinking
<2 blinking
3 blinking
4-20 blinking
4-20 blinking
20-22 blinking
<2 blinking
Fault LED Alarm Display
LED
blinking off Warm-up
solid off Fault
blinking off Calibration
off off Measurem
ent level
off on Alarm
blinking on Overrange
solid off Fault
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