Oil Leak Detector NAR 300 system
Endress+Hauser 37
9Operation check
Warning!
Avoid electrostatic charge when handling sensor.
1. Preliminarily, even if the oil leak alarm is output, please take precaution not to affect the alarm
system.
2. Lift float sensor and bring out in the air. The conductivity sensor gets into the non-conducting
(Oil or Air) recognition condition by bringing out in the air.
3. Please put the check tool attached onto the one side of tuning-fork. The tuning-fork sensor gets
into the liquid recognition condition by putting the check tool on. It gets into same conditions
as the oil leak detection by the non-conducting and the liquid. If it is normal, the voltage of
terminal between H+ and H- are 17.5±05V.
Please refer to the below fig.
Sensor I/F Ex box
Transumitter NRR 261
FG
H-
TB1
H+
FEL+ FEL-
TB2
FRAME
GUARD PROBE
Measure the voltage of terminal between H+ and H-
Normal alarm status : 17.5±0.5V
IS terminal
Green Blue2
Blue1
Red
Blue Yellow
Black
White
9 Operation check
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