14
High alarm Low alarm
Figure 5.1 HLFS/LLFS
5.3 Time delay setting
The time delay adjustment is a potentiometer located on the top of the unit
“
TIME DELAY
”
. It could adjust
the reset time of the relay when an alarm condition ceases to exist. Clockwise the adjustment could increasing
the time delay.
If the unit without
“
TIMA DELAY
”
adjustment, then no time delay option available.
5.4 Range setting
Range setting normally be adjust at span 2 ( i.e. the second place is at
“
ON
”
, following is same),factory
setting always also at that position.
Range setting at on the top of the unit --
”
RANGE
”
, change the switch No.2
、
3
、
4position,could measure
different process material through different sensing element IL. While one position at
“
ON
”
, the other twos
should at
“
off
”
position.
Relationship between material conductivity and span position:
Span 2:Sensing element length less than 300mm or high insulating material such as: plastic
powder/granular or foam;
Span 3:Sensing element length less than 3000mm or general insulating/conductive material;
Span 4:Sensing element length over 3000mm or semi-conductive/conductive material.
