GPI LM50DB, Instruction Manual, Page: 6 / 8

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5. CALIBRATION
CALI 5
Note: Provides calibration adjustment up to +/- 5% of
reading. You will need to calculate the percentage
adjustment you require. If the meter is reading over you will
need to enter a minus figure. If the meter is reading under you
will need to enter a plus figure.
51 CALIBRATION = CALI 51 ( adjust calib/- 5%)
b) Press the DISP button 3 times to reach “CALI 5”
c) Press RESET “CALI 51” will appear.
d) Press and hold down RESET for 2 seconds ( program will
appear and the first digit will flash)
e) Press RESET to change number.
Press DISP to change the decimal point position, or go
to the next number.
Press the RESET button to set the negative value.
f) Press and hold down RESET until “program” disappears
to accept setting.
g) Press RESET for five seconds to return the meter to the
operating mode.
6. CONFIGURATION CONF 6
6 CONFIGURATION = CONF 6 (configuration details)
b) Press the DISP button 4 times to reach “CONF 6”
c) Press RESET “MOD” plus model number will appear.
d) Press RESET “REL” plus hardwear release number will
appear.
e) Press RESET the screen will flash between “SOFT” and
the softwear release no’s (at 2 second intervals)
f) Press RESET the screen will flash between “SEr” and the 6
figure serial number (at 2 second intervals)
g) Press RESET “MAN” plus manufacturer number
h) Press RESET the screen will flash between “CONFIG”
and the configuration number (at 2 second intervals).
i) Press RESET for five seconds to return the meter to the
operating mode.
7. DIAGNOSTICS
dIA 7
a) Press and hold down RESET for 5 seconds until “MEtr 1”
appears.
71 DIAGNOSTICS = dIA 7 (diagnostic mode)
b) Press the DISP button 5 times to reach “dIA 7”
c) Press RESET “ dIA 71” will appear.
d) Press and hold down RESET for 2 seconds ( Program will
appear then all the segments should be displayed).
e) Press the DISP button “diSP” ( to check that the display
button is working properly).
f) Press the RESET button “RESEt” ( to check that the reset
button is working properly).
g) Press and hold down RESET for 2 seconds ( Program
will disappear (check the condition of the reed switch).
The condition of the reed switch can only be checked
when there is liquid flowing through the meter. The reed
switch should be reading between 50 - 80.
h) Press RESET for five seconds to return the meter to the
operating mode.
d) Press RESET to select default time (5-20 seconds)
e) Press and hold down RESET until “program” disappears
to accept setting.
f) Press RESET for five seconds to return the meter to the
operating mode.
Step 1. Reset the batch reading to zero.
Step 2. Dispence at least 5 liters, using a constant flow rate,
into a graduated calibrated container.
Step 3. Take the reading from the IM50.
Step 4. Calculate the % error as follows.
% error = (( container volume - IM50 volume) / container volume) * 100
Step 5. Enter the % error into the meter as calculated, if the
value is negative enter a negative number
a) Press and hold down RESET for 5 seconds until “totL2”
appears.
a) Press and hold down RESET for 5 seconds until “totL2”
appears.
c) Press and hold down RESET for 2 seconds ( program will
appear)
b) Press the DISP button 2 times to reach “tiME 43”
a) Press and hold down RESET for 5 seconds until “totL2”
appears.
43 TIME = tiME 43 (time to revert to default display)
Note: The display shows ( Hxx rYY ) when fluid flows through
the meter. YY is the sensitivity of the reed switch.