Oil Leak Detector NAR 300 system
Endress+Hauser 29
7 Adjustment
7.1 Transmitter adjustment
7.1.1 Alarm output relay
The delay time (ON delay) is set by time setting trimmer. In the delay performance,
when continuous alarm condition continues for a certain period of time, it is judged as the alarm
output. When operating within the set time, it is not judged as the alarm output. This function is
used to prevent the false alarm.
Note!
Response delay time of approx. 6 sec. is always added to the detection circuit except for delay time
by the trimmer.
Caution!
In the NRR 261, please open the body cover only after power has been off for10 minutes.
Transmitter NRR 261
The trimmer is visible by opening the body cover.
Fig. 13 Trimmer of Transmitter NRR 261
Transmitter NRR 262
There is a trimmer on the surface of case and it is available to set up necessary delay time. The set-
table delay time value is 1 to 30 sec. (internally approx. 6 sec. of the delay time are added to this
time).
Fig. 14 Trimmer of Transmitter NRR 262
Trimmer for delay time adjustment
Trimmer for delay time adjustment
7 Adjustment
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