Operation
Threshold
The threshold function defines the level at which pressure recordings begin . For example, if the
THRESHOLD SIGNAL
is set to
>20%, the pressure recording will not begin until the pressure exceeds 20% of the maximum pressure set for that sensor . The
threshold is set using a percentage of the maximum value used to scale 20 mA input in the
SCALE P1
or
SCALE P2
menu item .
With threshold set for example at >10% the recording starts when the pressure transducer is sending 5 .6 mA of current to the
MC4000 display . If scaled for 200 psi, pressure sensor P1 begins recording as soon as the pressure reaches 20 psi .
THRESHOLD
SIGNAL <10 %
Selection
Function
>10%, <10%…>90%,
<90% in steps of 10%
The recording starts as soon as the input signal exceeds the
selected level . Scroll through the options using
UP
and
DOWN
,
when the needed threshold is reached, press
OK
. The screen
will display
DATA STORED
. For records that have to begin at zero
signal level, use <10% .
At the end of a recording cycle, the display automatically shows the graphs corresponding to the stored data from the P1
pressure transducer .
Backlight
BACKLIGHT
LIGHT OFF
Selection
Function
BACKLIGHT OFF
The backlight is off .
BACKLIGHT ON
The display illuminates for 30 seconds each time any of the buttons are
pressed . Press
OK
at this prompt to turn the backlight on . The backlight
set to on reduces battery life .
Date and Time
DATE AND TIME
21:32:45 AM
29/03/13
Selection
Function
HH : MM : SS
DD : MM : YY
This command sets the internal clock with the time and date . In this
prompt, the number that is selected for change will blink . To increase
the number press
UP
, to decrease the number press
DOWN
. Once you
have reached the appropriate number, press
RIGHT
to move to the next
number that needs to be changed . When you are finished press
OK
. The
screen will display
DATA STORED
.
Scaling for Pressure Sensors
SCALE P1
+ 100.000
Selection
Function
+000 .000…+999 .999
This parameter sets the full-scale reading at the point the
pressure sensor P1 and P2 has an output of 20 mA . In this prompt,
the number that is selected for change will blink . To increase the
number press
UP
, to decrease the number press
DOWN
. Once
you have reached the appropriate number, press
RIGHT
to move
to the next number that needs to be changed . When you are
finished press
OK
. The screen will display
DATA STORED
.
SCALE P2
+ 2.00000
+0 .00000…+9 .99999
Page 11
February 2015
TST-UM-00017-EN-03
