Electronic level sensor
LR8009
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9.5 Configuring the display
u
Select [SELd] and set type of indication:
• [L] = The level is indicated in cm.
• [L%] = The level is indicated in percent of the final value of the measuring range.
• [OFF] = The display is switched off in the operating mode. Touching one of the buttons indicates
the current measured value for 30 s. The LEDs remain active even if the display is deactivated.
[SELd]
9.6 Offset setting
u
Select [OFS] and enter the distance between bottom of the tank and lower edge of the probe.
w
Afterwards, display and switch points refer to the real level. Factory setting: [OFS] = 0.
[OFS]
Set [OFS] before setting the switching limits (SP1/FH1, rP1/FL1). Otherwise, the switching limits
shift by the value of the set offset.
9.7 Setting the output signals
9.7.1 Setting the output function
u
Select [OU1]…[OU4] and set the switching function:
• [Hno] = hysteresis function/normally open
• [Hnc] = hysteresis function/normally closed
• [Fno] = window function/normally open
• [Fnc] = window function/normally closed
Note: if the switch point is used as an overflow prevention, the setting OUx = Hnc (NC function) is rec-
ommended. The principle of normally closed operation ensures that wire break or cable break is also
detected.
[OU1]
…
[OU4]
9.7.2 Setting the switching limits (hysteresis function)
u
Make sure that for the corresponding output [OUx] the function [Hno] or [Hnc] is set.
u
Select [SP1]…[SP4] and set the value at which the output switches.
[SP1]
…
[SP4]
u
Select [rP1]…[rP4] and set the value at which the output is reset.
rPx is always smaller than SPx. The device only accepts values which are lower than the value for
SPx.
[rP1]
…
[rP4]
9.7.3 Setting the switching limits (window function)
u
Make sure that for the corresponding output [OUx] the function [Fno] or [Fnc] is set.
u
Select [FH1]…[FH4] and set the upper limit of the acceptable range.
[FH1]
…
[FH4]
u
Select [FL1]…[FL4] and set the lower limit of the acceptable range.
FLx is always lower than FHx. The device only accepts values which are lower than the value for FHx.
[FL1]
…
[FL4]
