Operating instructions
METTLER TOLEDO DE40/50/51 Density Meter 49
We recommend to use our certified density standards for a periodic instrument check:
ME-51338002 Water 0.99... g/cm
3
+/- 0.00001
ME-51338003 Beverage syrup 1.04... g/cm
3
+/- 0.00010
ME-51338004 Dichlorotoluene 1.26... g/cm
3
+/- 0.00002
ME-51338005 Fluorocarbon 1.95... g/cm
3
+/- 0.00002
10.7 Periodic (Function 6)
This function is used to set the intervals of the periodic adjustment (calibration) as well as the
periodic check. This function is also used to display and print the last adjustment data and
check data stored in the instrument.
10.7.1 Periodic Check
Select function 6 "Periodic" and confirm with <ENTER>.
The display will show the due date
for the next periodic check. This due
date is calculated automatically by
the instrument according to following
settings. Confirm with <ENTER>.
Select the periodic check (Check
Alarm) to be "On" or "Off", and
confirm with <ENTER>.
If "On" is selected, the instrument will give one of the following messages when it is turned
on: "X Days To Check" as a remainder, "Check Day" on the due date, and "Check Day Over!"
on the following days. Each of these displays will return to the "Ready" display after a while.
If "Off" is selected, the periodic check is not active i.e. whenever you press check, a daily
check is performed.
While running the instrument will not display a message, but pressing the Check key will start
a periodic check.
Enter the check interval (in days)
and confirm with <ENTER>
Note: Enter 0 Day to force a periodic
check on today's date. This will
especially be required if the periodic
check has failed, in order to perform
it again.
Functions
< Periodic>
Periodic :Check Calib.
Next Check Date :19/07)1998
Check Alarm :Off On
Check Interval :[ 7]day
Show Check List :[Execute]
Exit :[Execute]
< Periodic>
Periodic :Check Calib.
Next Check Date :19/07)1998
Check Alarm :Off On
Check Interval :[ 7]day
Show Check List :[Execute]
Exit :[Execute]
< Periodic>
Periodic :Check Calib.
Next Check Date :19/07)1998
Check Alarm :Off On
Check Interval :[ 7]day
Show Check List :[Execute]
Exit :[Execute]