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• To change the speed of response, obtain the `SP' display.
• Scroll forward through the options (1-2-3) by pressing the "20" key. Scroll backward through the
options (3-2-1) by pressing the "4" key.
• When the desired option is displayed, stop pressing the key. The display will automatically return
to the Run mode (6 sec).
Alarm
The alarm adjustment assigns one of the following
functions to the relay.
O =
loss of echo / fault alarm (factory setting)
The relay is energized with the contacts open during
normal operation (see Fail-safe on page).
Ø =
process alarm
The non zero value entered becomes the alarm setpoint,
referenced to The Probe's sensor face. The relay de-
energizes and the contacts close when the material is
within the alarm zone. There is a hysterisis equivalent to
5% of the empty calibration distance.
• To change the alarm function or setpoint, obtain the `AL' display.
• Press the "20" key to increase or the "4" key to decrease the setpoint.
• When the display has scrolled to the desired value, stop pressing the key. The display
automatically returns to the Run mode (6 sec).
Fail-Safe
In the event a loss of echo or fault condition exceeds the `Waiting' period (see Speed of Response
on page 6 or Fail-safe Timer below), the ` ? ' icon appears and one of the following fail-safe defaults
is immediately effected.
FLS
1
2
3*
p = proportional span
7ML19981GD61
speed of response
3 sec
current option i.e. 1 m/min
press "20" for option 2 i.e. 5 m/min
option 2 selected
6 sec
alarm
3 sec
stored function i.e. LOE / fault
Press "20" to adjust setpoint i.e. 1.36 m
Press "4" to decrease to desired setpoint
i.e. 1.35 m
new alarm value
6 sec
default
full
empty
hold
i = inversely proportional span
The Probe – INSTRUCTION MANUAL
The Probe
alarm
setpoint
hysterisis
Note:
key depressed during the setpoint
adjustment and release when the
desired value is obtained.
p
i
mA
mA
22
4
4
22
hold
hold
* = factory default
blanking
alarm zone
For faster scrolling, hold the
reading
hold
hold
hold
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